mirror of
https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
5070e51dde
1. Regression introduced when refactoring on clock sources selection (0d07f859).
If channel configuration is called before timer configuration on C6, PWM signal may not be able to output.
2. Missing the improper fade parameter fix inside ledc_set_duty_and_update() function.
505 lines
17 KiB
C
505 lines
17 KiB
C
/*
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* SPDX-FileCopyrightText: 2020-2022 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 LEDC 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 "hal/ledc_types.h"
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#include "soc/ledc_periph.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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#define LEDC_LL_GET_HW() &LEDC
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#define LEDC_LL_DUTY_NUM_MAX (LEDC_DUTY_NUM_CH0_V)
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#define LEDC_LL_DUTY_CYCLE_MAX (LEDC_DUTY_CYCLE_CH0_V)
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#define LEDC_LL_DUTY_SCALE_MAX (LEDC_DUTY_SCALE_CH0_V)
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#define LEDC_LL_HPOINT_VAL_MAX (LEDC_HPOINT_CH0_V)
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#define LEDC_LL_FRACTIONAL_BITS (8)
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#define LEDC_LL_FRACTIONAL_MAX ((1 << LEDC_LL_FRACTIONAL_BITS) - 1)
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#define LEDC_LL_GLOBAL_CLOCKS { \
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LEDC_SLOW_CLK_PLL_DIV, \
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LEDC_SLOW_CLK_XTAL, \
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LEDC_SLOW_CLK_RC_FAST, \
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}
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#define LEDC_LL_GLOBAL_CLK_DEFAULT LEDC_SLOW_CLK_RC_FAST
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/**
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* @brief Set LEDC low speed timer clock
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*
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* @param hw Beginning address of the peripheral registers
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* @param slow_clk_sel LEDC low speed timer clock source
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*
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* @return None
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*/
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static inline void ledc_ll_set_slow_clk_sel(ledc_dev_t *hw, ledc_slow_clk_sel_t slow_clk_sel)
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{
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uint32_t clk_sel_val = 0;
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if (slow_clk_sel == LEDC_SLOW_CLK_PLL_DIV) {
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clk_sel_val = 1;
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} else if (slow_clk_sel == LEDC_SLOW_CLK_RC_FAST) {
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clk_sel_val = 2;
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} else if (slow_clk_sel == LEDC_SLOW_CLK_XTAL) {
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clk_sel_val = 3;
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}
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hw->conf.apb_clk_sel = clk_sel_val;
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}
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/**
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* @brief Get LEDC low speed timer clock
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*
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* @param hw Beginning address of the peripheral registers
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* @param slow_clk_sel LEDC low speed timer clock source
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*
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* @return None
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*/
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static inline void ledc_ll_get_slow_clk_sel(ledc_dev_t *hw, ledc_slow_clk_sel_t *slow_clk_sel)
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{
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uint32_t clk_sel_val = hw->conf.apb_clk_sel;
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if (clk_sel_val == 1) {
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*slow_clk_sel = LEDC_SLOW_CLK_PLL_DIV;
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} else if (clk_sel_val == 2) {
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*slow_clk_sel = LEDC_SLOW_CLK_RC_FAST;
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} else if (clk_sel_val == 3) {
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*slow_clk_sel = LEDC_SLOW_CLK_XTAL;
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} else {
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abort();
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}
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}
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/**
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* @brief Update LEDC low speed timer
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param timer_sel LEDC timer index (0-3), select from ledc_timer_t
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*
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* @return None
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*/
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static inline void ledc_ll_ls_timer_update(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_timer_t timer_sel)
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{
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hw->timer_group[speed_mode].timer[timer_sel].conf.para_up = 1;
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}
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/**
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* @brief Reset LEDC timer
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param timer_sel LEDC timer index (0-3), select from ledc_timer_t
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*
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* @return None
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*/
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static inline void ledc_ll_timer_rst(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_timer_t timer_sel)
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{
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hw->timer_group[speed_mode].timer[timer_sel].conf.rst = 1;
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hw->timer_group[speed_mode].timer[timer_sel].conf.rst = 0;
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}
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/**
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* @brief Pause LEDC timer
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param timer_sel LEDC timer index (0-3), select from ledc_timer_t
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*
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* @return None
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*/
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static inline void ledc_ll_timer_pause(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_timer_t timer_sel)
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{
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hw->timer_group[speed_mode].timer[timer_sel].conf.pause = 1;
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}
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/**
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* @brief Resume LEDC timer
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param timer_sel LEDC timer index (0-3), select from ledc_timer_t
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*
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* @return None
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*/
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static inline void ledc_ll_timer_resume(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_timer_t timer_sel)
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{
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hw->timer_group[speed_mode].timer[timer_sel].conf.pause = 0;
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}
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/**
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* @brief Set LEDC timer clock divider
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param timer_sel LEDC timer index (0-3), select from ledc_timer_t
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* @param clock_divider Timer clock divide value, the timer clock is divided from the selected clock source
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*
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* @return None
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*/
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static inline void ledc_ll_set_clock_divider(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_timer_t timer_sel, uint32_t clock_divider)
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{
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hw->timer_group[speed_mode].timer[timer_sel].conf.clk_div = clock_divider;
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}
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/**
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* @brief Get LEDC timer clock divider
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param timer_sel LEDC timer index (0-3), select from ledc_timer_t
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* @param clock_divider Timer clock divide value, the timer clock is divided from the selected clock source
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*
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* @return None
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*/
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static inline void ledc_ll_get_clock_divider(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_timer_t timer_sel, uint32_t *clock_divider)
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{
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*clock_divider = hw->timer_group[speed_mode].timer[timer_sel].conf.clk_div;
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}
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/**
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* @brief Get LEDC timer clock source
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param timer_sel LEDC timer index (0-3), select from ledc_timer_t
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* @param clk_src Pointer to accept the timer clock source
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*
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* @return None
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*/
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static inline void ledc_ll_get_clock_source(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_timer_t timer_sel, ledc_clk_src_t *clk_src)
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{
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*clk_src = LEDC_SCLK;
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}
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/**
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* @brief Set LEDC duty resolution
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param timer_sel LEDC timer index (0-3), select from ledc_timer_t
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* @param duty_resolution Resolution of duty setting in number of bits. The range of duty values is [0, (2**duty_resolution)]
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*
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* @return None
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*/
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static inline void ledc_ll_set_duty_resolution(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_timer_t timer_sel, uint32_t duty_resolution)
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{
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hw->timer_group[speed_mode].timer[timer_sel].conf.duty_res = duty_resolution;
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}
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/**
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* @brief Get LEDC duty resolution
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param timer_sel LEDC timer index (0-3), select from ledc_timer_t
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* @param duty_resolution Pointer to accept the resolution of duty setting in number of bits.
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*
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* @return None
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*/
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static inline void ledc_ll_get_duty_resolution(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_timer_t timer_sel, uint32_t *duty_resolution)
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{
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*duty_resolution = hw->timer_group[speed_mode].timer[timer_sel].conf.duty_res;
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}
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/**
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* @brief Update channel configure when select low speed mode
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param channel_num LEDC channel index (0-7), select from ledc_channel_t
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*
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* @return None
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*/
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static inline void ledc_ll_ls_channel_update(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_channel_t channel_num)
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{
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hw->channel_group[speed_mode].channel[channel_num].conf0.para_up = 1;
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}
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/**
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* @brief Get LEDC max duty
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param channel_num LEDC channel index (0-7), select from ledc_channel_t
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* @param max_duty Pointer to accept the max duty
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*
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* @return None
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*/
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static inline void ledc_ll_get_max_duty(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_channel_t channel_num, uint32_t *max_duty)
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{
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uint32_t timer_sel = hw->channel_group[speed_mode].channel[channel_num].conf0.timer_sel;
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*max_duty = (1 << (LEDC.timer_group[speed_mode].timer[timer_sel].conf.duty_res));
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}
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/**
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* @brief Set LEDC hpoint value
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param channel_num LEDC channel index (0-7), select from ledc_channel_t
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* @param hpoint_val LEDC hpoint value(max: 0xfffff)
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*
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* @return None
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*/
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static inline void ledc_ll_set_hpoint(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_channel_t channel_num, uint32_t hpoint_val)
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{
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hw->channel_group[speed_mode].channel[channel_num].hpoint.hpoint = hpoint_val;
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}
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/**
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* @brief Get LEDC hpoint value
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param channel_num LEDC channel index (0-7), select from ledc_channel_t
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* @param hpoint_val Pointer to accept the LEDC hpoint value(max: 0xfffff)
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*
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* @return None
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*/
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static inline void ledc_ll_get_hpoint(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_channel_t channel_num, uint32_t *hpoint_val)
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{
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*hpoint_val = hw->channel_group[speed_mode].channel[channel_num].hpoint.hpoint;
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}
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/**
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* @brief Set LEDC the integer part of duty value
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param channel_num LEDC channel index (0-7), select from ledc_channel_t
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* @param duty_val LEDC duty value, the range of duty setting is [0, (2**duty_resolution)]
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*
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* @return None
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*/
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static inline void ledc_ll_set_duty_int_part(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_channel_t channel_num, uint32_t duty_val)
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{
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hw->channel_group[speed_mode].channel[channel_num].duty.duty = duty_val << 4;
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}
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/**
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* @brief Get LEDC duty value
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param channel_num LEDC channel index (0-7), select from ledc_channel_t
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* @param duty_val Pointer to accept the LEDC duty value
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*
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* @return None
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*/
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static inline void ledc_ll_get_duty(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_channel_t channel_num, uint32_t *duty_val)
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{
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*duty_val = (hw->channel_group[speed_mode].channel[channel_num].duty_rd.duty_r >> 4);
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}
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/**
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* @brief Set LEDC duty change direction
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param channel_num LEDC channel index (0-7), select from ledc_channel_t
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* @param duty_direction LEDC duty change direction, increase or decrease
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*
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* @return None
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*/
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static inline void ledc_ll_set_duty_direction(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_channel_t channel_num, ledc_duty_direction_t duty_direction)
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{
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hw->channel_group[speed_mode].channel[channel_num].conf1.duty_inc = duty_direction;
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}
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/**
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* @brief Get LEDC duty change direction
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param channel_num LEDC channel index (0-7), select from ledc_channel_t
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* @param duty_direction Pointer to accept the LEDC duty change direction, increase or decrease
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*
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* @return None
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*/
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static inline void ledc_ll_get_duty_direction(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_channel_t channel_num, ledc_duty_direction_t *duty_direction)
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{
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*duty_direction = hw->channel_group[speed_mode].channel[channel_num].conf1.duty_inc;
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}
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/**
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* @brief Set the number of increased or decreased times
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param channel_num LEDC channel index (0-7), select from ledc_channel_t
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* @param duty_num The number of increased or decreased times
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*
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* @return None
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*/
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static inline void ledc_ll_set_duty_num(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_channel_t channel_num, uint32_t duty_num)
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{
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hw->channel_group[speed_mode].channel[channel_num].conf1.duty_num = duty_num;
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}
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/**
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* @brief Set the duty cycles of increase or decrease
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param channel_num LEDC channel index (0-7), select from ledc_channel_t
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* @param duty_cycle The duty cycles
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*
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* @return None
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*/
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static inline void ledc_ll_set_duty_cycle(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_channel_t channel_num, uint32_t duty_cycle)
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{
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hw->channel_group[speed_mode].channel[channel_num].conf1.duty_cycle = duty_cycle;
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}
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/**
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* @brief Set the step scale of increase or decrease
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param channel_num LEDC channel index (0-7), select from ledc_channel_t
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* @param duty_scale The step scale
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*
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* @return None
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*/
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static inline void ledc_ll_set_duty_scale(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_channel_t channel_num, uint32_t duty_scale)
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{
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hw->channel_group[speed_mode].channel[channel_num].conf1.duty_scale = duty_scale;
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}
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/**
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* @brief Set the output enable
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param channel_num LEDC channel index (0-7), select from ledc_channel_t
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* @param sig_out_en The output enable status
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*
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* @return None
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*/
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static inline void ledc_ll_set_sig_out_en(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_channel_t channel_num, bool sig_out_en)
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{
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hw->channel_group[speed_mode].channel[channel_num].conf0.sig_out_en = sig_out_en;
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}
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/**
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* @brief Set the duty start
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param channel_num LEDC channel index (0-7), select from ledc_channel_t
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* @param duty_start The duty start
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*
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* @return None
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*/
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static inline void ledc_ll_set_duty_start(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_channel_t channel_num, bool duty_start)
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{
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hw->channel_group[speed_mode].channel[channel_num].conf1.duty_start = duty_start;
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}
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/**
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* @brief Set output idle level
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param channel_num LEDC channel index (0-7), select from ledc_channel_t
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* @param idle_level The output idle level
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*
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* @return None
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*/
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static inline void ledc_ll_set_idle_level(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_channel_t channel_num, uint32_t idle_level)
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{
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hw->channel_group[speed_mode].channel[channel_num].conf0.idle_lv = idle_level & 0x1;
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}
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/**
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* @brief Set fade end interrupt enable
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param channel_num LEDC channel index (0-7), select from ledc_channel_t
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* @param fade_end_intr_en The fade end interrupt enable status
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*
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* @return None
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*/
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static inline void ledc_ll_set_fade_end_intr(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_channel_t channel_num, bool fade_end_intr_en)
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{
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uint32_t value = hw->int_ena.val;
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uint32_t int_en_base = LEDC_DUTY_CHNG_END_CH0_INT_ENA_S;
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hw->int_ena.val = fade_end_intr_en ? (value | BIT(int_en_base + channel_num)) : (value & (~(BIT(int_en_base + channel_num))));
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}
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/**
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* @brief Get fade end interrupt status
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param channel_num LEDC channel index (0-7), select from ledc_channel_t
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* @param intr_status The fade end interrupt status
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*
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* @return None
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*/
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static inline void ledc_ll_get_fade_end_intr_status(ledc_dev_t *hw, ledc_mode_t speed_mode, uint32_t *intr_status)
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{
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uint32_t value = hw->int_st.val;
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uint32_t int_en_base = LEDC_DUTY_CHNG_END_CH0_INT_ENA_S;
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*intr_status = (value >> int_en_base) & 0xff;
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}
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/**
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* @brief Clear fade end interrupt status
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param channel_num LEDC channel index (0-7), select from ledc_channel_t
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*
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* @return None
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*/
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static inline void ledc_ll_clear_fade_end_intr_status(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_channel_t channel_num)
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{
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uint32_t int_en_base = LEDC_DUTY_CHNG_END_CH0_INT_ENA_S;
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hw->int_clr.val = BIT(int_en_base + channel_num);
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}
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/**
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* @brief Set timer index of the specified channel
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param channel_num LEDC channel index (0-7), select from ledc_channel_t
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* @param timer_sel LEDC timer index (0-3), select from ledc_timer_t
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*
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* @return None
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*/
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static inline void ledc_ll_bind_channel_timer(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_channel_t channel_num, ledc_timer_t timer_sel)
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{
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hw->channel_group[speed_mode].channel[channel_num].conf0.timer_sel = timer_sel;
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}
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/**
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* @brief Get timer index of the specified channel
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*
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* @param hw Beginning address of the peripheral registers
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* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
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* @param channel_num LEDC channel index (0-7), select from ledc_channel_t
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* @param timer_sel Pointer to accept the LEDC timer index
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*
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* @return None
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*/
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static inline void ledc_ll_get_channel_timer(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_channel_t channel_num, ledc_timer_t *timer_sel)
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{
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*timer_sel = hw->channel_group[speed_mode].channel[channel_num].conf0.timer_sel;
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}
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#ifdef __cplusplus
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}
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#endif
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