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https://github.com/espressif/esp-idf.git
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60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
/*
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* SPDX-FileCopyrightText: 2010-2022 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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#include <stdint.h>
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#include <stdlib.h>
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#include "esp_attr.h"
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#include "sdkconfig.h"
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#include "hal/uart_ll.h"
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#include "hal/efuse_hal.h"
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#include "esp_rom_caps.h"
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#include "rom/uart.h"
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#if CONFIG_IDF_TARGET_ESP32
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/**
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* The function defined in ROM code has a bug, so we re-implement it here.
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*/
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IRAM_ATTR void esp_rom_uart_tx_wait_idle(uint8_t uart_no)
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{
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while (!uart_ll_is_tx_idle(UART_LL_GET_HW(uart_no))) {};
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}
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#endif
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IRAM_ATTR void esp_rom_uart_set_clock_baudrate(uint8_t uart_no, uint32_t clock_hz, uint32_t baud_rate)
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{
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uart_ll_set_baudrate(UART_LL_GET_HW(uart_no), baud_rate, clock_hz);
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}
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#if CONFIG_IDF_TARGET_ESP32C3
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/**
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* The ESP32-C3 ROM has released two versions, one is the ECO3 version,
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* and the other is the version before ECO3 (include ECO0 ECO1 ECO2).
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* These two versions of the ROM code do not list uart_tx_switch wrap
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* function in the ROM interface, so here use the uart_tx_switch direct
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* address instead.
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*/
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IRAM_ATTR void esp_rom_uart_set_as_console(uint8_t uart_no)
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{
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typedef void (*rom_func_t)(uint8_t);
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rom_func_t uart_tx_switch = NULL;
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if (efuse_hal_chip_revision() < 3) {
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uart_tx_switch = (rom_func_t)0x4004b8ca;
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} else {
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uart_tx_switch = (rom_func_t)0x4004c166;
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}
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uart_tx_switch(uart_no);
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}
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#endif
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#if !ESP_ROM_HAS_UART_BUF_SWITCH
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IRAM_ATTR void esp_rom_uart_switch_buffer(uint8_t uart_no)
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{
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UartDevice *uart = GetUartDevice();
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uart->buff_uart_no = uart_no;
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}
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#endif // !ESP_ROM_HAS_UART_BUF_SWITCH
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