44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
#include <stdio.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "driver/uart.h"
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#include "driver/gpio.h"
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#include "sdkconfig.h"
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#include "esp_log.h"
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#include "app_uart.h"
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static const char *TAG = "UART";
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void init_uart() {
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uart_config_t uart_config = {
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.baud_rate = UART_BAUD_RATE,
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.data_bits = UART_DATA_8_BITS,
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.parity = UART_PARITY_DISABLE,
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.stop_bits = UART_STOP_BITS_1,
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.flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
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.source_clk = UART_SCLK_DEFAULT,
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};
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int intr_alloc_flags = 0;
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#if CONFIG_UART_ISR_IN_IRAM
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intr_alloc_flags = ESP_INTR_FLAG_IRAM;
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#endif
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ESP_ERROR_CHECK(uart_driver_install(UART_PORT_NUM, BUF_SIZE * 2, 0 , 0, NULL, intr_alloc_flags));
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ESP_ERROR_CHECK(uart_param_config(UART_PORT_NUM, &uart_config));
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ESP_ERROR_CHECK(uart_set_pin(UART_PORT_NUM, TXD_PIN, RXD_PIN, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE));
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ESP_LOGI("UART", "UART initialized");
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}
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int uart_send_data(const char *data, uint8_t len) {
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return uart_write_bytes(UART_PORT_NUM, data, len);
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}
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// void uart_receive_data() {
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// uint8_t data[BUF_SIZE];
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// int length = uart_read_bytes(UART_PORT_NUM, data, BUF_SIZE, 20 / portTICK_RATE_MS);
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// if (length > 0) {
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// data[length] = '\0';
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// ESP_LOGI("UART", "Received %d bytes: '%s'", length, (char *)data);
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// }
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// }
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