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https://github.com/espressif/esp-idf.git
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59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
// Copyright 2010-2020 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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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 "esp_efuse.h"
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#include "sdkconfig.h"
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#include "hal/uart_ll.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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(void)clock_hz;
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uart_ll_set_baudrate(UART_LL_GET_HW(uart_no), baud_rate);
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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 (esp_efuse_get_chip_ver() < 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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