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feat(uart): add DTR and DSR signals support for UART

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Song Ruo Jing
2025-07-10 19:33:04 +08:00
parent b59bc28553
commit 6bfdc93593
40 changed files with 1020 additions and 345 deletions
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30
components/soc/esp32c3/include/soc/uart_pins.h
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@@ -1,34 +1,27 @@
// Copyright 2015-2021 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/*
* SPDX-FileCopyrightText: 2015-2025 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
#include "soc/io_mux_reg.h"
/* Specify the number of pins for UART */
#define SOC_UART_PINS_COUNT (4)
/* Specify the GPIO pin number for each UART signal in the IOMUX */
#define U0RXD_GPIO_NUM 20
#define U0TXD_GPIO_NUM 21
#define U0RTS_GPIO_NUM (-1)
#define U0CTS_GPIO_NUM (-1)
#define U0DTR_GPIO_NUM (-1)
#define U0DSR_GPIO_NUM (-1)
#define U1RXD_GPIO_NUM (-1)
#define U1TXD_GPIO_NUM (-1)
#define U1RTS_GPIO_NUM (-1)
#define U1CTS_GPIO_NUM (-1)
#define U1DTR_GPIO_NUM (-1)
#define U1DSR_GPIO_NUM (-1)
/* The following defines are necessary for reconfiguring the UART
* to use IOMUX, at runtime. */
@@ -37,8 +30,13 @@
/* No func for the following pins, they shall not be used */
#define U0RTS_MUX_FUNC (-1)
#define U0CTS_MUX_FUNC (-1)
#define U0DTR_MUX_FUNC (-1)
#define U0DSR_MUX_FUNC (-1)
/* Same goes for UART1 */
#define U1TXD_MUX_FUNC (-1)
#define U1RXD_MUX_FUNC (-1)
#define U1RTS_MUX_FUNC (-1)
#define U1CTS_MUX_FUNC (-1)
#define U1DTR_MUX_FUNC (-1)
#define U1DSR_MUX_FUNC (-1)