mirror of
https://github.com/espressif/esp-idf.git
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1347 lines
41 KiB
C
1347 lines
41 KiB
C
/*
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* SPDX-FileCopyrightText: 2022-2024 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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// The LL layer for UART register operations.
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// Note that most of the register operations in this layer are non-atomic operations.
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#pragma once
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#include "esp_attr.h"
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#include "hal/misc.h"
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#include "hal/uart_types.h"
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#include "soc/uart_reg.h"
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#include "soc/uart_struct.h"
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#include "soc/lp_uart_reg.h"
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#include "soc/pcr_struct.h"
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#include "soc/pcr_reg.h"
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#include "soc/lp_clkrst_struct.h"
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#include "soc/lpperi_struct.h"
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#include "hal/assert.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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// The default fifo depth
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#define UART_LL_FIFO_DEF_LEN (SOC_UART_FIFO_LEN)
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#define LP_UART_LL_FIFO_DEF_LEN (SOC_LP_UART_FIFO_LEN)
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// Get UART hardware instance with giving uart num
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#define UART_LL_GET_HW(num) (((num) == UART_NUM_0) ? (&UART0) : (((num) == UART_NUM_1) ? (&UART1) : (&LP_UART)))
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#define UART_LL_REG_FIELD_BIT_SHIFT(hw) (((hw) == &LP_UART) ? 3 : 0)
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#define UART_LL_MIN_WAKEUP_THRESH (3)
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#define UART_LL_INTR_MASK (0x7ffff) //All interrupt mask
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#define UART_LL_FSM_IDLE (0x0)
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#define UART_LL_FSM_TX_WAIT_SEND (0xf)
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#define UART_LL_PCR_REG_U32_SET(hw, reg_suffix, field_suffix, val) \
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if ((hw) == &UART0) { \
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HAL_FORCE_MODIFY_U32_REG_FIELD(PCR.uart0_##reg_suffix, uart0_##field_suffix, (val)) \
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} else { \
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HAL_FORCE_MODIFY_U32_REG_FIELD(PCR.uart1_##reg_suffix, uart1_##field_suffix, (val)) \
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}
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#define UART_LL_PCR_REG_U32_GET(hw, reg_suffix, field_suffix) \
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(((hw) == &UART0) ? \
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HAL_FORCE_READ_U32_REG_FIELD(PCR.uart0_##reg_suffix, uart0_##field_suffix) : \
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HAL_FORCE_READ_U32_REG_FIELD(PCR.uart1_##reg_suffix, uart1_##field_suffix))
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#define UART_LL_PCR_REG_SET(hw, reg_suffix, field_suffix, val) \
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if ((hw) == &UART0) { \
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PCR.uart0_##reg_suffix.uart0_##field_suffix = (val); \
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} else { \
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PCR.uart1_##reg_suffix.uart1_##field_suffix = (val); \
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}
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#define UART_LL_PCR_REG_GET(hw, reg_suffix, field_suffix) \
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(((hw) == &UART0) ? PCR.uart0_##reg_suffix.uart0_##field_suffix : PCR.uart1_##reg_suffix.uart1_##field_suffix)
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// Define UART interrupts
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typedef enum {
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UART_INTR_RXFIFO_FULL = (0x1 << 0),
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UART_INTR_TXFIFO_EMPTY = (0x1 << 1),
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UART_INTR_PARITY_ERR = (0x1 << 2),
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UART_INTR_FRAM_ERR = (0x1 << 3),
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UART_INTR_RXFIFO_OVF = (0x1 << 4),
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UART_INTR_DSR_CHG = (0x1 << 5),
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UART_INTR_CTS_CHG = (0x1 << 6),
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UART_INTR_BRK_DET = (0x1 << 7),
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UART_INTR_RXFIFO_TOUT = (0x1 << 8),
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UART_INTR_SW_XON = (0x1 << 9),
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UART_INTR_SW_XOFF = (0x1 << 10),
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UART_INTR_GLITCH_DET = (0x1 << 11),
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UART_INTR_TX_BRK_DONE = (0x1 << 12),
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UART_INTR_TX_BRK_IDLE = (0x1 << 13),
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UART_INTR_TX_DONE = (0x1 << 14),
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UART_INTR_RS485_PARITY_ERR = (0x1 << 15),
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UART_INTR_RS485_FRM_ERR = (0x1 << 16),
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UART_INTR_RS485_CLASH = (0x1 << 17),
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UART_INTR_CMD_CHAR_DET = (0x1 << 18),
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UART_INTR_WAKEUP = (0x1 << 19),
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} uart_intr_t;
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/**
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* @brief Sync the update to UART core clock domain
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*
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* @param hw Beginning address of the peripheral registers.
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*
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* @return None.
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*/
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FORCE_INLINE_ATTR void uart_ll_update(uart_dev_t *hw)
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{
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hw->reg_update.reg_update = 1;
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while (hw->reg_update.reg_update);
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}
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/****************************************** LP_UART Specific ********************************************/
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/**
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* @brief Get the LP_UART source clock.
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*
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* @param hw Beginning address of the peripheral registers.
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* @param source_clk Current LP_UART clock source, one in soc_periph_lp_uart_clk_src_t.
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*/
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FORCE_INLINE_ATTR void lp_uart_ll_get_sclk(uart_dev_t *hw, soc_module_clk_t *source_clk)
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{
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(void)hw;
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switch (LP_CLKRST.lpperi.lp_uart_clk_sel) {
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default:
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case 0:
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*source_clk = (soc_module_clk_t)LP_UART_SCLK_LP_FAST;
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break;
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case 1:
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*source_clk = (soc_module_clk_t)LP_UART_SCLK_XTAL_D2;
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break;
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}
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}
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/**
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* @brief Set LP UART source clock
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*
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* @param hw Address offset of the LP UART peripheral registers
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* @param src_clk Source clock for the LP UART peripheral
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*/
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static inline void lp_uart_ll_set_source_clk(uart_dev_t *hw, soc_periph_lp_uart_clk_src_t src_clk)
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{
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(void)hw;
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switch (src_clk) {
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case LP_UART_SCLK_LP_FAST:
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LP_CLKRST.lpperi.lp_uart_clk_sel = 0;
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break;
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case LP_UART_SCLK_XTAL_D2:
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LP_CLKRST.lpperi.lp_uart_clk_sel = 1;
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break;
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default:
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// Invalid LP_UART clock source
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HAL_ASSERT(false);
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}
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}
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/// LP_CLKRST.lpperi is a shared register, so this function must be used in an atomic way
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#define lp_uart_ll_set_source_clk(...) (void)__DECLARE_RCC_ATOMIC_ENV; lp_uart_ll_set_source_clk(__VA_ARGS__)
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/**
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* @brief Configure the lp uart baud-rate.
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*
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* @param hw Beginning address of the peripheral registers.
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* @param baud The baud rate to be set.
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* @param sclk_freq Frequency of the clock source of UART, in Hz.
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*
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* @return None
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*/
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FORCE_INLINE_ATTR void lp_uart_ll_set_baudrate(uart_dev_t *hw, uint32_t baud, uint32_t sclk_freq)
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{
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#define DIV_UP(a, b) (((a) + (b) - 1) / (b))
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const uint32_t max_div = BIT(12) - 1; // UART divider integer part only has 12 bits
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uint32_t sclk_div = DIV_UP(sclk_freq, (uint64_t)max_div * baud);
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if (sclk_div == 0) abort();
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uint32_t clk_div = ((sclk_freq) << 4) / (baud * sclk_div);
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// The baud rate configuration register is divided into
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// an integer part and a fractional part.
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hw->clkdiv_sync.clkdiv_int = clk_div >> 4;
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hw->clkdiv_sync.clkdiv_frag = clk_div & 0xf;
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HAL_FORCE_MODIFY_U32_REG_FIELD(hw->clk_conf, sclk_div_num, sclk_div - 1);
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uart_ll_update(hw);
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}
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/**
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* @brief Enable bus clock for the LP UART module
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*
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* @param hw_id LP UART instance ID
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* @param enable True to enable, False to disable
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*/
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static inline void _lp_uart_ll_enable_bus_clock(int hw_id, bool enable)
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{
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(void)hw_id;
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LPPERI.clk_en.lp_uart_ck_en = enable;
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}
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/// LPPERI.clk_en is a shared register, so this function must be used in an atomic way
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#define lp_uart_ll_enable_bus_clock(...) (void)__DECLARE_RCC_ATOMIC_ENV; _lp_uart_ll_enable_bus_clock(__VA_ARGS__)
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/**
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* @brief Reset LP UART module
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*
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* @param hw_id LP UART instance ID
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*/
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static inline void lp_uart_ll_reset_register(int hw_id)
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{
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(void)hw_id;
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LPPERI.reset_en.lp_uart_reset_en = 1;
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LPPERI.reset_en.lp_uart_reset_en = 0;
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}
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/// LPPERI.reset_en is a shared register, so this function must be used in an atomic way
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#define lp_uart_ll_reset_register(...) (void)__DECLARE_RCC_ATOMIC_ENV; lp_uart_ll_reset_register(__VA_ARGS__)
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/*************************************** General LL functions ******************************************/
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/**
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* @brief Check if UART is enabled or disabled.
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*
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* @param uart_num UART port number, the max port number is (UART_NUM_MAX -1).
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*
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* @return true: enabled; false: disabled
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*/
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FORCE_INLINE_ATTR bool uart_ll_is_enabled(uint32_t uart_num)
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{
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switch (uart_num) {
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case 0:
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return PCR.uart0_conf.uart0_clk_en && !PCR.uart0_conf.uart0_rst_en;
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case 1:
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return PCR.uart1_conf.uart1_clk_en && !PCR.uart1_conf.uart1_rst_en;
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case 2: // LP_UART
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return LPPERI.clk_en.lp_uart_ck_en && !LPPERI.reset_en.lp_uart_reset_en;
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default:
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// Unknown uart port number
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HAL_ASSERT(false);
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return false;
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}
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}
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/**
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* @brief Enable the bus clock for uart
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* @param uart_num UART port number, the max port number is (UART_NUM_MAX -1).
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* @param enable true to enable, false to disable
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*/
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static inline void uart_ll_enable_bus_clock(uart_port_t uart_num, bool enable)
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{
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switch (uart_num) {
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case 0:
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PCR.uart0_conf.uart0_clk_en = enable;
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break;
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case 1:
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PCR.uart1_conf.uart1_clk_en = enable;
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break;
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default:
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// LP_UART
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abort();
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break;
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}
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}
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/**
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* @brief Reset UART module
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* @param uart_num UART port number, the max port number is (UART_NUM_MAX -1).
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*/
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static inline void uart_ll_reset_register(uart_port_t uart_num)
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{
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switch (uart_num) {
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case 0:
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PCR.uart0_conf.uart0_rst_en = 1;
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PCR.uart0_conf.uart0_rst_en = 0;
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break;
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case 1:
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PCR.uart1_conf.uart1_rst_en = 1;
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PCR.uart1_conf.uart1_rst_en = 0;
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break;
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default:
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// LP_UART
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abort();
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break;
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}
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}
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/**
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* @brief Enable the UART clock.
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*
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* @param hw Beginning address of the peripheral registers.
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*
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* @return None.
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*/
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FORCE_INLINE_ATTR void uart_ll_sclk_enable(uart_dev_t *hw)
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{
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if ((hw) != &LP_UART) {
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UART_LL_PCR_REG_SET(hw, sclk_conf, sclk_en, 1);
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} else {
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// LP_UART clk_en shares the same register with other LP peripherals
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// Needs to be protected with a lock, therefore, it has its unique LL function
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abort();
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}
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}
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/**
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* @brief Disable the UART clock.
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*
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* @param hw Beginning address of the peripheral registers.
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*
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* @return None.
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*/
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FORCE_INLINE_ATTR void uart_ll_sclk_disable(uart_dev_t *hw)
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{
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if ((hw) != &LP_UART) {
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UART_LL_PCR_REG_SET(hw, sclk_conf, sclk_en, 0);
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} else {
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// LP_UART clk_en shares the same register with other LP peripherals
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// Needs to be protected with a lock, therefore, it has its unique LL function
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abort();
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}
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}
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/**
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* @brief Set the UART source clock.
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*
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* @param hw Beginning address of the peripheral registers.
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* @param source_clk The UART source clock. The source clock can be PLL_F80M clock, RTC clock or XTAL clock.
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* All clock sources can remain at their original frequencies during DFS.
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*
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* @return None.
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*/
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FORCE_INLINE_ATTR void uart_ll_set_sclk(uart_dev_t *hw, soc_module_clk_t source_clk)
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{
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if ((hw) != &LP_UART) {
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uint32_t sel_value = 0;
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switch (source_clk) {
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case UART_SCLK_PLL_F80M:
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sel_value = 1;
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break;
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case UART_SCLK_RTC:
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sel_value = 2;
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break;
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case UART_SCLK_XTAL:
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sel_value = 3;
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break;
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default:
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// Invalid HP_UART clock source
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abort();
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}
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UART_LL_PCR_REG_SET(hw, sclk_conf, sclk_sel, sel_value);
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} else {
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// LP_UART clk_sel shares the same register with other LP peripherals
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// Needs to be protected with a lock, therefore, it has its unique LL function
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abort();
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}
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}
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/**
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* @brief Get the UART source clock type.
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*
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* @param hw Beginning address of the peripheral registers.
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* @param source_clk The pointer to accept the UART source clock type.
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*
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* @return None.
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*/
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FORCE_INLINE_ATTR void uart_ll_get_sclk(uart_dev_t *hw, soc_module_clk_t *source_clk)
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{
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if ((hw) != &LP_UART) {
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switch (UART_LL_PCR_REG_GET(hw, sclk_conf, sclk_sel)) {
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default:
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case 1:
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*source_clk = (soc_module_clk_t)UART_SCLK_PLL_F80M;
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break;
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case 2:
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*source_clk = (soc_module_clk_t)UART_SCLK_RTC;
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break;
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case 3:
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*source_clk = (soc_module_clk_t)UART_SCLK_XTAL;
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break;
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}
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} else {
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lp_uart_ll_get_sclk(hw, source_clk);
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}
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}
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/**
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* @brief Configure the baud-rate.
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*
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* @param hw Beginning address of the peripheral registers.
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* @param baud The baud rate to be set.
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* @param sclk_freq Frequency of the clock source of UART, in Hz.
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*
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* @return None
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*/
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FORCE_INLINE_ATTR void uart_ll_set_baudrate(uart_dev_t *hw, uint32_t baud, uint32_t sclk_freq)
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{
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#define DIV_UP(a, b) (((a) + (b) - 1) / (b))
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const uint32_t max_div = BIT(12) - 1; // UART divider integer part only has 12 bits
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uint32_t sclk_div = DIV_UP(sclk_freq, (uint64_t)max_div * baud);
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if (sclk_div == 0) abort();
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uint32_t clk_div = ((sclk_freq) << 4) / (baud * sclk_div);
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// The baud rate configuration register is divided into
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// an integer part and a fractional part.
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hw->clkdiv_sync.clkdiv_int = clk_div >> 4;
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hw->clkdiv_sync.clkdiv_frag = clk_div & 0xf;
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if ((hw) == &LP_UART) {
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abort();
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} else {
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UART_LL_PCR_REG_U32_SET(hw, sclk_conf, sclk_div_num, sclk_div - 1);
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}
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#undef DIV_UP
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uart_ll_update(hw);
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}
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/**
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* @brief Get the current baud-rate.
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*
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* @param hw Beginning address of the peripheral registers.
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* @param sclk_freq Frequency of the clock source of UART, in Hz.
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*
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* @return The current baudrate
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*/
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FORCE_INLINE_ATTR uint32_t uart_ll_get_baudrate(uart_dev_t *hw, uint32_t sclk_freq)
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{
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typeof(hw->clkdiv_sync) div_reg;
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div_reg.val = hw->clkdiv_sync.val;
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int sclk_div;
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if ((hw) == &LP_UART) {
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sclk_div = HAL_FORCE_READ_U32_REG_FIELD(hw->clk_conf, sclk_div_num) + 1;
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} else {
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sclk_div = UART_LL_PCR_REG_U32_GET(hw, sclk_conf, sclk_div_num) + 1;
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}
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return ((sclk_freq << 4)) / (((div_reg.clkdiv_int << 4) | div_reg.clkdiv_frag) * sclk_div);
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}
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/**
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* @brief Enable the UART interrupt based on the given mask.
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*
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* @param hw Beginning address of the peripheral registers.
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* @param mask The bitmap of the interrupts need to be enabled.
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*
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* @return None
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*/
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FORCE_INLINE_ATTR void uart_ll_ena_intr_mask(uart_dev_t *hw, uint32_t mask)
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{
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hw->int_ena.val = hw->int_ena.val | mask;
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}
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/**
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* @brief Disable the UART interrupt based on the given mask.
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*
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* @param hw Beginning address of the peripheral registers.
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* @param mask The bitmap of the interrupts need to be disabled.
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*
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* @return None
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*/
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FORCE_INLINE_ATTR void uart_ll_disable_intr_mask(uart_dev_t *hw, uint32_t mask)
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{
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hw->int_ena.val = hw->int_ena.val & (~mask);
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}
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/**
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* @brief Get the UART raw interrupt status.
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*
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* @param hw Beginning address of the peripheral registers.
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*
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* @return The UART interrupt status.
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*/
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FORCE_INLINE_ATTR uint32_t uart_ll_get_intraw_mask(uart_dev_t *hw)
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{
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return hw->int_raw.val;
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}
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/**
|
|
* @brief Get the UART interrupt status.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
*
|
|
* @return The UART interrupt status.
|
|
*/
|
|
FORCE_INLINE_ATTR uint32_t uart_ll_get_intsts_mask(uart_dev_t *hw)
|
|
{
|
|
return hw->int_st.val;
|
|
}
|
|
|
|
/**
|
|
* @brief Clear the UART interrupt status based on the given mask.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param mask The bitmap of the interrupts need to be cleared.
|
|
*
|
|
* @return None
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_clr_intsts_mask(uart_dev_t *hw, uint32_t mask)
|
|
{
|
|
hw->int_clr.val = mask;
|
|
}
|
|
|
|
/**
|
|
* @brief Get status of enabled interrupt.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
*
|
|
* @return interrupt enable value
|
|
*/
|
|
FORCE_INLINE_ATTR uint32_t uart_ll_get_intr_ena_status(uart_dev_t *hw)
|
|
{
|
|
return hw->int_ena.val;
|
|
}
|
|
|
|
/**
|
|
* @brief Read the UART rxfifo.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param buf The data buffer. The buffer size should be large than 128 byts.
|
|
* @param rd_len The data length needs to be read.
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_read_rxfifo(uart_dev_t *hw, uint8_t *buf, uint32_t rd_len)
|
|
{
|
|
for (int i = 0; i < (int)rd_len; i++) {
|
|
buf[i] = hw->fifo.rxfifo_rd_byte;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Write byte to the UART txfifo.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param buf The data buffer.
|
|
* @param wr_len The data length needs to be written.
|
|
*
|
|
* @return None
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_write_txfifo(uart_dev_t *hw, const uint8_t *buf, uint32_t wr_len)
|
|
{
|
|
// Write to the FIFO should make sure only involve write operation, any read operation would cause data lost.
|
|
// Non-32-bit access would lead to a read-modify-write operation to the register, which is undesired.
|
|
// Therefore, use 32-bit access to avoid any potential problem.
|
|
for (int i = 0; i < (int)wr_len; i++) {
|
|
hw->fifo.val = (int)buf[i];
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Reset the UART hw rxfifo.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
*
|
|
* @return None
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_rxfifo_rst(uart_dev_t *hw)
|
|
{
|
|
hw->conf0_sync.rxfifo_rst = 1;
|
|
uart_ll_update(hw);
|
|
hw->conf0_sync.rxfifo_rst = 0;
|
|
uart_ll_update(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Reset the UART hw txfifo.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
*
|
|
* @return None
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_txfifo_rst(uart_dev_t *hw)
|
|
{
|
|
hw->conf0_sync.txfifo_rst = 1;
|
|
uart_ll_update(hw);
|
|
hw->conf0_sync.txfifo_rst = 0;
|
|
uart_ll_update(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Get the length of readable data in UART rxfifo.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
*
|
|
* @return The readable data length in rxfifo.
|
|
*/
|
|
FORCE_INLINE_ATTR uint32_t uart_ll_get_rxfifo_len(uart_dev_t *hw)
|
|
{
|
|
return (hw->status.rxfifo_cnt) >> UART_LL_REG_FIELD_BIT_SHIFT(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Get the writable data length of UART txfifo.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
*
|
|
* @return The data length of txfifo can be written.
|
|
*/
|
|
FORCE_INLINE_ATTR uint32_t uart_ll_get_txfifo_len(uart_dev_t *hw)
|
|
{
|
|
uint32_t total_fifo_len = ((hw) == &LP_UART) ? LP_UART_LL_FIFO_DEF_LEN : UART_LL_FIFO_DEF_LEN;
|
|
uint32_t txfifo_len = (hw->status.txfifo_cnt) >> UART_LL_REG_FIELD_BIT_SHIFT(hw);
|
|
return (total_fifo_len - txfifo_len);
|
|
}
|
|
|
|
/**
|
|
* @brief Configure the UART stop bit.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param stop_bit The stop bit number to be set.
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_set_stop_bits(uart_dev_t *hw, uart_stop_bits_t stop_bit)
|
|
{
|
|
hw->conf0_sync.stop_bit_num = stop_bit;
|
|
uart_ll_update(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Get the configuration of the UART stop bit.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param stop_bit The pointer to accept the stop bit configuration
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_get_stop_bits(uart_dev_t *hw, uart_stop_bits_t *stop_bit)
|
|
{
|
|
*stop_bit = (uart_stop_bits_t)hw->conf0_sync.stop_bit_num;
|
|
}
|
|
|
|
/**
|
|
* @brief Configure the UART parity check mode.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param parity_mode The parity check mode to be set.
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_set_parity(uart_dev_t *hw, uart_parity_t parity_mode)
|
|
{
|
|
if (parity_mode != UART_PARITY_DISABLE) {
|
|
hw->conf0_sync.parity = parity_mode & 0x1;
|
|
}
|
|
hw->conf0_sync.parity_en = (parity_mode >> 1) & 0x1;
|
|
uart_ll_update(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Get the UART parity check mode configuration.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param parity_mode The pointer to accept the parity check mode configuration.
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_get_parity(uart_dev_t *hw, uart_parity_t *parity_mode)
|
|
{
|
|
if (hw->conf0_sync.parity_en) {
|
|
*parity_mode = (uart_parity_t)(0x2 | hw->conf0_sync.parity);
|
|
} else {
|
|
*parity_mode = UART_PARITY_DISABLE;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Set the UART rxfifo full threshold value. When the data in rxfifo is more than the threshold value,
|
|
* it will produce rxfifo_full_int_raw interrupt.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param full_thrhd The full threshold value of the rxfifo. `full_thrhd` should be less than `(LP_)UART_LL_FIFO_DEF_LEN`.
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_set_rxfifo_full_thr(uart_dev_t *hw, uint16_t full_thrhd)
|
|
{
|
|
hw->conf1.rxfifo_full_thrhd = full_thrhd << UART_LL_REG_FIELD_BIT_SHIFT(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Set the txfifo empty threshold. when the data length in txfifo is less than threshold value,
|
|
* it will produce txfifo_empty_int_raw interrupt.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param empty_thrhd The empty threshold of txfifo.
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_set_txfifo_empty_thr(uart_dev_t *hw, uint16_t empty_thrhd)
|
|
{
|
|
hw->conf1.txfifo_empty_thrhd = empty_thrhd << UART_LL_REG_FIELD_BIT_SHIFT(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Set the UART rx-idle threshold value. when receiver takes more time than rx_idle_thrhd to receive a byte data,
|
|
* it will produce frame end signal for uhci to stop receiving data.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param rx_idle_thr The rx-idle threshold to be set.
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_set_rx_idle_thr(uart_dev_t *hw, uint32_t rx_idle_thr)
|
|
{
|
|
hw->idle_conf_sync.rx_idle_thrhd = rx_idle_thr;
|
|
uart_ll_update(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Configure the duration time between transfers.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param idle_num the duration time between transfers.
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_set_tx_idle_num(uart_dev_t *hw, uint32_t idle_num)
|
|
{
|
|
hw->idle_conf_sync.tx_idle_num = idle_num;
|
|
uart_ll_update(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Configure the transmiter to send break chars.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param break_num The number of the break chars need to be send.
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_tx_break(uart_dev_t *hw, uint32_t break_num)
|
|
{
|
|
if (break_num > 0) {
|
|
HAL_FORCE_MODIFY_U32_REG_FIELD(hw->txbrk_conf_sync, tx_brk_num, break_num);
|
|
hw->conf0_sync.txd_brk = 1;
|
|
} else {
|
|
hw->conf0_sync.txd_brk = 0;
|
|
}
|
|
uart_ll_update(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Configure the UART hardware flow control.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param flow_ctrl The hw flow control configuration.
|
|
* @param rx_thrs The rx flow control signal will be active if the data length in rxfifo is more than this value.
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_set_hw_flow_ctrl(uart_dev_t *hw, uart_hw_flowcontrol_t flow_ctrl, uint32_t rx_thrs)
|
|
{
|
|
//only when UART_HW_FLOWCTRL_RTS is set , will the rx_thresh value be set.
|
|
if (flow_ctrl & UART_HW_FLOWCTRL_RTS) {
|
|
hw->hwfc_conf_sync.rx_flow_thrhd = rx_thrs << UART_LL_REG_FIELD_BIT_SHIFT(hw);
|
|
hw->hwfc_conf_sync.rx_flow_en = 1;
|
|
} else {
|
|
hw->hwfc_conf_sync.rx_flow_en = 0;
|
|
}
|
|
if (flow_ctrl & UART_HW_FLOWCTRL_CTS) {
|
|
hw->conf0_sync.tx_flow_en = 1;
|
|
} else {
|
|
hw->conf0_sync.tx_flow_en = 0;
|
|
}
|
|
uart_ll_update(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Configure the hardware flow control.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param flow_ctrl A pointer to accept the hw flow control configuration.
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_get_hw_flow_ctrl(uart_dev_t *hw, uart_hw_flowcontrol_t *flow_ctrl)
|
|
{
|
|
*flow_ctrl = UART_HW_FLOWCTRL_DISABLE;
|
|
if (hw->hwfc_conf_sync.rx_flow_en) {
|
|
*flow_ctrl = (uart_hw_flowcontrol_t)((unsigned int)(*flow_ctrl) | (unsigned int)UART_HW_FLOWCTRL_RTS);
|
|
}
|
|
if (hw->conf0_sync.tx_flow_en) {
|
|
*flow_ctrl = (uart_hw_flowcontrol_t)((unsigned int)(*flow_ctrl) | (unsigned int)UART_HW_FLOWCTRL_CTS);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Configure the software flow control.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param flow_ctrl The UART sofware flow control settings.
|
|
* @param sw_flow_ctrl_en Set true to enable software flow control, otherwise set it false.
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_set_sw_flow_ctrl(uart_dev_t *hw, uart_sw_flowctrl_t *flow_ctrl, bool sw_flow_ctrl_en)
|
|
{
|
|
if (sw_flow_ctrl_en) {
|
|
hw->swfc_conf0_sync.xonoff_del = 1;
|
|
hw->swfc_conf0_sync.sw_flow_con_en = 1;
|
|
hw->swfc_conf1.xon_threshold = (flow_ctrl->xon_thrd) << UART_LL_REG_FIELD_BIT_SHIFT(hw);
|
|
hw->swfc_conf1.xoff_threshold = (flow_ctrl->xoff_thrd) << UART_LL_REG_FIELD_BIT_SHIFT(hw);
|
|
HAL_FORCE_MODIFY_U32_REG_FIELD(hw->swfc_conf0_sync, xon_char, flow_ctrl->xon_char);
|
|
HAL_FORCE_MODIFY_U32_REG_FIELD(hw->swfc_conf0_sync, xoff_char, flow_ctrl->xoff_char);
|
|
} else {
|
|
hw->swfc_conf0_sync.sw_flow_con_en = 0;
|
|
hw->swfc_conf0_sync.xonoff_del = 0;
|
|
}
|
|
uart_ll_update(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Configure the AT cmd char. When the receiver receives a continuous AT cmd char, it will produce at_cmd_char_det interrupt.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param cmd_char The AT cmd char configuration.The configuration member is:
|
|
* - cmd_char The AT cmd character
|
|
* - char_num The number of received AT cmd char must be equal to or greater than this value
|
|
* - gap_tout The interval between each AT cmd char, when the duration is less than this value, it will not take this data as AT cmd char
|
|
* - pre_idle The idle time before the first AT cmd char, when the duration is less than this value, it will not take the previous data as the last AT cmd char
|
|
* - post_idle The idle time after the last AT cmd char, when the duration is less than this value, it will not take this data as the first AT cmd char
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_set_at_cmd_char(uart_dev_t *hw, uart_at_cmd_t *cmd_char)
|
|
{
|
|
HAL_FORCE_MODIFY_U32_REG_FIELD(hw->at_cmd_char_sync, data, cmd_char->cmd_char);
|
|
HAL_FORCE_MODIFY_U32_REG_FIELD(hw->at_cmd_char_sync, char_num, cmd_char->char_num);
|
|
HAL_FORCE_MODIFY_U32_REG_FIELD(hw->at_cmd_postcnt_sync, post_idle_num, cmd_char->post_idle);
|
|
HAL_FORCE_MODIFY_U32_REG_FIELD(hw->at_cmd_precnt_sync, pre_idle_num, cmd_char->pre_idle);
|
|
HAL_FORCE_MODIFY_U32_REG_FIELD(hw->at_cmd_gaptout_sync, rx_gap_tout, cmd_char->gap_tout);
|
|
uart_ll_update(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Set the UART data bit mode.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param data_bit The data bit mode to be set.
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_set_data_bit_num(uart_dev_t *hw, uart_word_length_t data_bit)
|
|
{
|
|
hw->conf0_sync.bit_num = data_bit;
|
|
uart_ll_update(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Set the rts active level.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param level The rts active level, 0 or 1.
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_set_rts_active_level(uart_dev_t *hw, int level)
|
|
{
|
|
hw->conf0_sync.sw_rts = level & 0x1;
|
|
uart_ll_update(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Set the dtr active level.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param level The dtr active level, 0 or 1.
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_set_dtr_active_level(uart_dev_t *hw, int level)
|
|
{
|
|
hw->conf1.sw_dtr = level & 0x1;
|
|
}
|
|
|
|
/**
|
|
* @brief Set the UART wakeup threshold.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param wakeup_thrd The wakeup threshold value to be set. When the input rx edge changes more than this value,
|
|
* the UART will active from light sleeping mode.
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_set_wakeup_thrd(uart_dev_t *hw, uint32_t wakeup_thrd)
|
|
{
|
|
// System would wakeup when the number of positive edges of RxD signal is larger than or equal to (UART_ACTIVE_THRESHOLD+3)
|
|
hw->sleep_conf2.active_threshold = wakeup_thrd - UART_LL_MIN_WAKEUP_THRESH;
|
|
}
|
|
|
|
/**
|
|
* @brief Configure the UART work in normal mode.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_set_mode_normal(uart_dev_t *hw)
|
|
{
|
|
// This function is only for HP_UART use
|
|
// LP_UART can only work in normal mode
|
|
// lp_uart_dev_t has no following fields (reserved), but no harm since we map the LP_UART instance to the uart_dev_t struct
|
|
|
|
hw->rs485_conf_sync.rs485_en = 0;
|
|
hw->rs485_conf_sync.rs485tx_rx_en = 0;
|
|
hw->rs485_conf_sync.rs485rxby_tx_en = 0;
|
|
hw->conf0_sync.irda_en = 0;
|
|
uart_ll_update(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Configure the UART work in rs485_app_ctrl mode.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_set_mode_rs485_app_ctrl(uart_dev_t *hw)
|
|
{
|
|
// This function is only for HP_UART use
|
|
// LP_UART can only work in normal mode
|
|
// lp_uart_dev_t has no following fields (reserved), but no harm since we map the LP_UART instance to the uart_dev_t struct
|
|
|
|
// Application software control, remove echo
|
|
hw->rs485_conf_sync.rs485rxby_tx_en = 1;
|
|
hw->conf0_sync.irda_en = 0;
|
|
hw->conf0_sync.sw_rts = 0;
|
|
hw->conf0_sync.irda_en = 0;
|
|
hw->rs485_conf_sync.dl0_en = 1;
|
|
hw->rs485_conf_sync.dl1_en = 1;
|
|
hw->rs485_conf_sync.rs485_en = 1;
|
|
uart_ll_update(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Configure the UART work in rs485_half_duplex mode.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_set_mode_rs485_half_duplex(uart_dev_t *hw)
|
|
{
|
|
// This function is only for HP_UART use
|
|
// LP_UART can only work in normal mode
|
|
// lp_uart_dev_t has no following fields (reserved), but no harm since we map the LP_UART instance to the uart_dev_t struct
|
|
|
|
// Enable receiver, sw_rts = 1 generates low level on RTS pin
|
|
hw->conf0_sync.sw_rts = 1;
|
|
// Half duplex mode
|
|
hw->rs485_conf_sync.rs485tx_rx_en = 0;
|
|
// Setting this bit will allow data to be transmitted while receiving data(full-duplex mode).
|
|
// But note that this full-duplex mode has no conflict detection function
|
|
hw->rs485_conf_sync.rs485rxby_tx_en = 0;
|
|
hw->conf0_sync.irda_en = 0;
|
|
hw->rs485_conf_sync.dl0_en = 1;
|
|
hw->rs485_conf_sync.dl1_en = 1;
|
|
hw->rs485_conf_sync.rs485_en = 1;
|
|
uart_ll_update(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Configure the UART work in collision_detect mode.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_set_mode_collision_detect(uart_dev_t *hw)
|
|
{
|
|
// This function is only for HP_UART use
|
|
// LP_UART can only work in normal mode
|
|
// lp_uart_dev_t has no following fields (reserved), but no harm since we map the LP_UART instance to the uart_dev_t struct
|
|
|
|
hw->conf0_sync.irda_en = 0;
|
|
// Enable full-duplex mode
|
|
hw->rs485_conf_sync.rs485tx_rx_en = 1;
|
|
// Transmitter should send data when the receiver is busy,
|
|
hw->rs485_conf_sync.rs485rxby_tx_en = 1;
|
|
hw->rs485_conf_sync.dl0_en = 1;
|
|
hw->rs485_conf_sync.dl1_en = 1;
|
|
hw->conf0_sync.sw_rts = 0;
|
|
hw->rs485_conf_sync.rs485_en = 1;
|
|
uart_ll_update(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Configure the UART work in irda mode.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_set_mode_irda(uart_dev_t *hw)
|
|
{
|
|
// This function is only for HP_UART use
|
|
// LP_UART can only work in normal mode
|
|
// lp_uart_dev_t has no following fields (reserved), but no harm since we map the LP_UART instance to the uart_dev_t struct
|
|
|
|
hw->rs485_conf_sync.rs485_en = 0;
|
|
hw->rs485_conf_sync.rs485tx_rx_en = 0;
|
|
hw->rs485_conf_sync.rs485rxby_tx_en = 0;
|
|
hw->conf0_sync.sw_rts = 0;
|
|
hw->conf0_sync.irda_en = 1;
|
|
uart_ll_update(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Set uart mode.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param mode The UART mode to be set.
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_set_mode(uart_dev_t *hw, uart_mode_t mode)
|
|
{
|
|
switch (mode) {
|
|
default:
|
|
case UART_MODE_UART:
|
|
uart_ll_set_mode_normal(hw);
|
|
break;
|
|
case UART_MODE_RS485_COLLISION_DETECT:
|
|
// Only HP_UART support this mode
|
|
uart_ll_set_mode_collision_detect(hw);
|
|
break;
|
|
case UART_MODE_RS485_APP_CTRL:
|
|
// Only HP_UART support this mode
|
|
uart_ll_set_mode_rs485_app_ctrl(hw);
|
|
break;
|
|
case UART_MODE_RS485_HALF_DUPLEX:
|
|
// Only HP_UART support this mode
|
|
uart_ll_set_mode_rs485_half_duplex(hw);
|
|
break;
|
|
case UART_MODE_IRDA:
|
|
// Only HP_UART support this mode
|
|
uart_ll_set_mode_irda(hw);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Get the UART AT cmd char configuration.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param cmd_char The Pointer to accept value of UART AT cmd char.
|
|
* @param char_num Pointer to accept the repeat number of UART AT cmd char.
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_get_at_cmd_char(uart_dev_t *hw, uint8_t *cmd_char, uint8_t *char_num)
|
|
{
|
|
*cmd_char = HAL_FORCE_READ_U32_REG_FIELD(hw->at_cmd_char_sync, data);
|
|
*char_num = HAL_FORCE_READ_U32_REG_FIELD(hw->at_cmd_char_sync, char_num);
|
|
}
|
|
|
|
/**
|
|
* @brief Get the UART wakeup threshold value.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
*
|
|
* @return The UART wakeup threshold value.
|
|
*/
|
|
FORCE_INLINE_ATTR uint32_t uart_ll_get_wakeup_thrd(uart_dev_t *hw)
|
|
{
|
|
return hw->sleep_conf2.active_threshold + UART_LL_MIN_WAKEUP_THRESH;
|
|
}
|
|
|
|
/**
|
|
* @brief Get the UART data bit configuration.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param data_bit The pointer to accept the UART data bit configuration.
|
|
*
|
|
* @return The bit mode.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_get_data_bit_num(uart_dev_t *hw, uart_word_length_t *data_bit)
|
|
{
|
|
*data_bit = (uart_word_length_t)hw->conf0_sync.bit_num;
|
|
}
|
|
|
|
/**
|
|
* @brief Check if the UART sending state machine is in the IDLE state.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
*
|
|
* @return True if the state machine is in the IDLE state, otherwise false is returned.
|
|
*/
|
|
FORCE_INLINE_ATTR bool uart_ll_is_tx_idle(uart_dev_t *hw)
|
|
{
|
|
return ((((hw->status.txfifo_cnt) >> UART_LL_REG_FIELD_BIT_SHIFT(hw)) == 0) && (hw->fsm_status.st_utx_out == 0));
|
|
}
|
|
|
|
/**
|
|
* @brief Check if the UART rts flow control is enabled.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
*
|
|
* @return True if hw rts flow control is enabled, otherwise false is returned.
|
|
*/
|
|
FORCE_INLINE_ATTR bool uart_ll_is_hw_rts_en(uart_dev_t *hw)
|
|
{
|
|
return hw->hwfc_conf_sync.rx_flow_en;
|
|
}
|
|
|
|
/**
|
|
* @brief Check if the UART cts flow control is enabled.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
*
|
|
* @return True if hw cts flow control is enabled, otherwise false is returned.
|
|
*/
|
|
FORCE_INLINE_ATTR bool uart_ll_is_hw_cts_en(uart_dev_t *hw)
|
|
{
|
|
return hw->conf0_sync.tx_flow_en;
|
|
}
|
|
|
|
/**
|
|
* @brief Configure TX signal loop back to RX module, just for the testing purposes
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param loop_back_en Set ture to enable the loop back function, else set it false.
|
|
*
|
|
* @return None
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_set_loop_back(uart_dev_t *hw, bool loop_back_en)
|
|
{
|
|
hw->conf0_sync.loopback = loop_back_en;
|
|
uart_ll_update(hw);
|
|
}
|
|
|
|
FORCE_INLINE_ATTR void uart_ll_xon_force_on(uart_dev_t *hw, bool always_on)
|
|
{
|
|
hw->swfc_conf0_sync.force_xon = 1;
|
|
uart_ll_update(hw);
|
|
if (!always_on) {
|
|
hw->swfc_conf0_sync.force_xon = 0;
|
|
uart_ll_update(hw);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Inverse the UART signal with the given mask.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param inv_mask The UART signal bitmap needs to be inversed.
|
|
* Use the ORred mask of `uart_signal_inv_t`;
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_inverse_signal(uart_dev_t *hw, uint32_t inv_mask)
|
|
{
|
|
// LP_UART does not support UART_SIGNAL_IRDA_TX_INV and UART_SIGNAL_IRDA_RX_INV
|
|
// lp_uart_dev_t has no these fields (reserved), but no harm since we map the LP_UART instance to the uart_dev_t struct
|
|
|
|
typeof(hw->conf0_sync) conf0_reg;
|
|
conf0_reg.val = hw->conf0_sync.val;
|
|
conf0_reg.irda_tx_inv = (inv_mask & UART_SIGNAL_IRDA_TX_INV) ? 1 : 0;
|
|
conf0_reg.irda_rx_inv = (inv_mask & UART_SIGNAL_IRDA_RX_INV) ? 1 : 0;
|
|
conf0_reg.rxd_inv = (inv_mask & UART_SIGNAL_RXD_INV) ? 1 : 0;
|
|
conf0_reg.txd_inv = (inv_mask & UART_SIGNAL_TXD_INV) ? 1 : 0;
|
|
hw->conf0_sync.val = conf0_reg.val;
|
|
|
|
typeof(hw->conf1) conf1_reg;
|
|
conf1_reg.val = hw->conf1.val;
|
|
conf1_reg.rts_inv = (inv_mask & UART_SIGNAL_RTS_INV) ? 1 : 0;
|
|
conf1_reg.dtr_inv = (inv_mask & UART_SIGNAL_DTR_INV) ? 1 : 0;
|
|
conf1_reg.cts_inv = (inv_mask & UART_SIGNAL_CTS_INV) ? 1 : 0;
|
|
conf1_reg.dsr_inv = (inv_mask & UART_SIGNAL_DSR_INV) ? 1 : 0;
|
|
hw->conf1.val = conf1_reg.val;
|
|
uart_ll_update(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Configure the timeout value for receiver receiving a byte, and enable rx timeout function.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param tout_thrd The timeout value as UART bit time. The rx timeout function will be disabled if `tout_thrd == 0`.
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_set_rx_tout(uart_dev_t *hw, uint16_t tout_thrd)
|
|
{
|
|
uint16_t tout_val = tout_thrd;
|
|
if (tout_thrd > 0) {
|
|
hw->tout_conf_sync.rx_tout_thrhd = tout_val;
|
|
hw->tout_conf_sync.rx_tout_en = 1;
|
|
} else {
|
|
hw->tout_conf_sync.rx_tout_en = 0;
|
|
}
|
|
uart_ll_update(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Get the timeout value for receiver receiving a byte.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
*
|
|
* @return tout_thr The timeout threshold value. If timeout feature is disabled returns 0.
|
|
*/
|
|
FORCE_INLINE_ATTR uint16_t uart_ll_get_rx_tout_thr(uart_dev_t *hw)
|
|
{
|
|
uint16_t tout_thrd = 0;
|
|
if (hw->tout_conf_sync.rx_tout_en > 0) {
|
|
tout_thrd = hw->tout_conf_sync.rx_tout_thrhd;
|
|
}
|
|
return tout_thrd;
|
|
}
|
|
|
|
/**
|
|
* @brief Get UART maximum timeout threshold.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
*
|
|
* @return maximum timeout threshold.
|
|
*/
|
|
FORCE_INLINE_ATTR uint16_t uart_ll_max_tout_thrd(uart_dev_t *hw)
|
|
{
|
|
return ((hw) == &LP_UART) ? LP_UART_RX_TOUT_THRHD_V : UART_RX_TOUT_THRHD_V;
|
|
}
|
|
|
|
/**
|
|
* @brief Configure the auto baudrate.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param enable Boolean marking whether the auto baudrate should be enabled or not.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_set_autobaud_en(uart_dev_t *hw, bool enable)
|
|
{
|
|
// LP_UART does not support autobaud
|
|
// lp_uart_dev_t has no following fields (reserved), but no harm since we map the LP_UART instance to the uart_dev_t struct
|
|
|
|
hw->conf0_sync.autobaud_en = enable ? 1 : 0;
|
|
uart_ll_update(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Get the RXD edge count.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
*/
|
|
FORCE_INLINE_ATTR uint32_t uart_ll_get_rxd_edge_cnt(uart_dev_t *hw)
|
|
{
|
|
// LP_UART does not support this feature
|
|
// lp_uart_dev_t has no following fields (reserved), but no harm since we map the LP_UART instance to the uart_dev_t struct
|
|
|
|
return hw->rxd_cnt.rxd_edge_cnt;
|
|
}
|
|
|
|
/**
|
|
* @brief Get the positive pulse minimum count.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
*/
|
|
FORCE_INLINE_ATTR uint32_t uart_ll_get_pos_pulse_cnt(uart_dev_t *hw)
|
|
{
|
|
// LP_UART does not support this feature
|
|
// lp_uart_dev_t has no following fields (reserved), but no harm since we map the LP_UART instance to the uart_dev_t struct
|
|
|
|
return hw->pospulse.posedge_min_cnt;
|
|
}
|
|
|
|
/**
|
|
* @brief Get the negative pulse minimum count.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
*/
|
|
FORCE_INLINE_ATTR uint32_t uart_ll_get_neg_pulse_cnt(uart_dev_t *hw)
|
|
{
|
|
// LP_UART does not support this feature
|
|
// lp_uart_dev_t has no following fields (reserved), but no harm since we map the LP_UART instance to the uart_dev_t struct
|
|
|
|
return hw->negpulse.negedge_min_cnt;
|
|
}
|
|
|
|
/**
|
|
* @brief Get the high pulse minimum count.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
*/
|
|
FORCE_INLINE_ATTR uint32_t uart_ll_get_high_pulse_cnt(uart_dev_t *hw)
|
|
{
|
|
// LP_UART does not support this feature
|
|
// lp_uart_dev_t has no following fields (reserved), but no harm since we map the LP_UART instance to the uart_dev_t struct
|
|
|
|
return hw->highpulse.highpulse_min_cnt;
|
|
}
|
|
|
|
/**
|
|
* @brief Get the low pulse minimum count.
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
*/
|
|
FORCE_INLINE_ATTR uint32_t uart_ll_get_low_pulse_cnt(uart_dev_t *hw)
|
|
{
|
|
// LP_UART does not support this feature
|
|
// lp_uart_dev_t has no following fields (reserved), but no harm since we map the LP_UART instance to the uart_dev_t struct
|
|
|
|
return hw->lowpulse.lowpulse_min_cnt;
|
|
}
|
|
|
|
/**
|
|
* @brief Force UART xoff.
|
|
*
|
|
* @param uart_num UART port number, the max port number is (UART_NUM_MAX -1).
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_force_xoff(uart_port_t uart_num)
|
|
{
|
|
uart_dev_t *hw = UART_LL_GET_HW(uart_num);
|
|
hw->swfc_conf0_sync.force_xon = 0;
|
|
hw->swfc_conf0_sync.sw_flow_con_en = 1;
|
|
hw->swfc_conf0_sync.force_xoff = 1;
|
|
uart_ll_update(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Force UART xon.
|
|
*
|
|
* @param uart_num UART port number, the max port number is (UART_NUM_MAX -1).
|
|
*
|
|
* @return None.
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_force_xon(uart_port_t uart_num)
|
|
{
|
|
uart_dev_t *hw = UART_LL_GET_HW(uart_num);
|
|
hw->swfc_conf0_sync.force_xoff = 0;
|
|
hw->swfc_conf0_sync.force_xon = 1;
|
|
hw->swfc_conf0_sync.sw_flow_con_en = 0;
|
|
hw->swfc_conf0_sync.force_xon = 0;
|
|
uart_ll_update(hw);
|
|
}
|
|
|
|
/**
|
|
* @brief Get UART finite-state machine status.
|
|
*
|
|
* @param uart_num UART port number, the max port number is (UART_NUM_MAX -1).
|
|
*
|
|
* @return UART module FSM status.
|
|
*/
|
|
FORCE_INLINE_ATTR uint32_t uart_ll_get_tx_fsm_status(uart_port_t uart_num)
|
|
{
|
|
uart_dev_t *hw = UART_LL_GET_HW(uart_num);
|
|
return hw->fsm_status.st_utx_out;
|
|
}
|
|
|
|
/**
|
|
* @brief Configure UART whether to discard when receiving wrong data
|
|
*
|
|
* @param hw Beginning address of the peripheral registers.
|
|
* @param discard true: Receiver stops storing data into FIFO when data is wrong
|
|
* false: Receiver continue storing data into FIFO when data is wrong
|
|
*/
|
|
FORCE_INLINE_ATTR void uart_ll_discard_error_data(uart_dev_t *hw, bool discard)
|
|
{
|
|
hw->conf0_sync.err_wr_mask = discard ? 1 : 0;
|
|
uart_ll_update(hw);
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|