kopia lustrzana https://github.com/espressif/esp-idf
53 wiersze
1.6 KiB
C
53 wiersze
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: CC0-1.0
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*/
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#include <stdio.h>
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#include "sdkconfig.h"
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#include "esp_log.h"
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#include "esp_check.h"
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#include "soft_uart.h"
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#define READ_COUNT 16
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const char* EXAMPLE_TAG = "dedicated_gpio_example";
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void app_main(void)
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{
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esp_err_t ret = ESP_OK;
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uint8_t read_buffer[READ_COUNT] = { 0 };
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const uint8_t write_buffer[] = "Hello, world! This is a message.\r\n";
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soft_uart_port_t port = NULL;
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soft_uart_config_t config = {
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.tx_pin = CONFIG_EMULATE_UART_GPIO_TX,
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.rx_pin = CONFIG_EMULATE_UART_GPIO_RX,
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.baudrate = SOFT_UART_115200
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};
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/* Initialize and configure the software UART port */
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ret = soft_uart_new(&config, &port);
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ESP_GOTO_ON_ERROR(ret, error, EXAMPLE_TAG, "Error configuring software UART");
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/* Write few bytes to the UART */
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ret = soft_uart_send(port, write_buffer, sizeof(write_buffer));
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ESP_GOTO_ON_ERROR(ret, error, EXAMPLE_TAG, "Error writing to the software UART");
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/* Read from the UART */
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ret = soft_uart_receive(port, read_buffer, sizeof(read_buffer));
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ESP_GOTO_ON_ERROR(ret, error, EXAMPLE_TAG, "Error reading from the software UART");
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printf("UART transfers succeeded, received bytes: { ");
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for (int i = 0; i < sizeof(read_buffer); i++) {
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printf("0x%02x ", read_buffer[i]);
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}
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printf("}\n");
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error:
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if (port != NULL) {
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soft_uart_del(port);
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}
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if (ret != ESP_OK) {
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ESP_LOGE(EXAMPLE_TAG, "An error occurred while communicating through the UART");
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}
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}
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