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56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
/*
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* SPDX-FileCopyrightText: 2019-2023 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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#pragma once
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#include "soc/soc_caps.h"
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#include "soc/periph_defs.h"
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#include "soc/gpio_sig_map.h"
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#include "soc/io_mux_reg.h"
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#include "soc/uart_pins.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define SOC_UART_TX_PIN_IDX (0)
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#define SOC_UART_RX_PIN_IDX (1)
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#define SOC_UART_RTS_PIN_IDX (2)
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#define SOC_UART_CTS_PIN_IDX (3)
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/**
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* @brief Macro that can be used to retrieve the signal of a certain pin for a
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* certain UART.
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*/
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#define UART_PERIPH_SIGNAL(IDX, PIN) (uart_periph_signal[(IDX)].pins[(PIN)].signal)
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typedef struct {
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/* Default GPIO number for this UART pin in the IOMUX.
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* This value can be -1 if there is no default GPIO for a pin.
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* For example, ESP32-C3 doesn't have any default GPIO for
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* U0CTS and U0RTS. */
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int32_t default_gpio : 15;
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/* Func which should be assigned to the GPIO to be used as UART */
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int32_t iomux_func : 4;
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/* Marks if the current UART pin is input (or not) */
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uint32_t input : 1;
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/* Signal in the GPIO signal map. */
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uint32_t signal : 12;
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} uart_periph_sig_t;
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typedef struct {
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const uart_periph_sig_t pins[SOC_UART_PINS_COUNT];
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const uint8_t irq;
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union {
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const periph_module_t module;
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};
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} uart_signal_conn_t;
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extern const uart_signal_conn_t uart_periph_signal[SOC_UART_NUM];
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#ifdef __cplusplus
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}
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#endif
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