while (1) { size_t data_len; if (uart_get_buffered_data_len(uart_num, &data_len) == ESP_OK) { uint8_t buf; int ret = uart_read_bytes(uart_num, &buf, 1, 0); if (ret != 1) ESP32_LOGW("data_len %u but read_bytes %i?", data_len, ret); } } Proposed fix I will...
uart_read_bytes(UART_NUM_1, data, length, 100); uart_write_bytes(UART_NUM_1, (const char*)data, strlen((const char*)data)); } uart_get_buffered_data_len(UART_NUM_2, (size_t*)&length); if(length > 0) { memset(data, 0, BUF_SIZE); uart_read_bytes(UART_NUM_2, data, leng...
const uart_port_t uart_num = UART_NUM_2; uint8_t data[128]; int length = 0; ESP_ERROR_CHECK(uart_get_buffered_data_len(uart_num, (size_t*)&length)); length = uart_read_bytes(uart_num, data, length, 100); 6. 软件流控 如果硬件流控被禁用,您可使用函数 uart_set_rts() 和 ...
1）实验平台：正点原子ESP32S3开发板 2）购买链接：https://detail.tmall.com/item.htm?id=...
当然我们也可以先获取FIFO里面的数据长度[uart_get_buffered_data_len()],然后再读取相应的内容,这样就不会造成不必要的阻塞。 // Read data from UART. const int uart_num = UART2; uint8_t data[128]; int length = 0; ESP_ERROR_CHECK(uart_get_buffered_data_len(uart_num, (size_t*)&length)...
while(bluetooth_notify ==1) {// uart_get_buffered_data_len(ECHO_UART_PORT_NUM, (size_t*)&uart_context_len);pmfbj_uart_context_len = uart_read_bytes(ECHO_UART_PORT_NUM, data, (BUF_SIZE -1),100/ portTICK_PERIOD_MS);// ESP_LOGI("UART TO BLE", "attribute value len = %d ",...
在读取数据之前,您可以调用来检查Rx FIFO缓冲区中可用的字节数uart_get_buffered_data_len(),然后再读取相应的内容,这样就不会造成不必要的阻塞。下面给出了使用这些功能的示例。 // Read data from UART.constintuart_num=UART_NUM_2;uint8_tdata[128];intlength=0;ESP_ERROR_CHECK(uart_get_buffered_data...
int len; char tmp_buf[128] = ""; uart_get_buffered_data_len(CONSOLE_UART_NUM, (size_t*)&len); uart_read_bytes(CONSOLE_UART_NUM, tmp_buf, len, (TickType_t)portMAX_DELAY); printf("s: "); for (int i = 0; i < len; i++) { printf("%c", tmp_buf[i]); } printf("\...
uart_get_buffered_data_len(EX_UART_NUM, &buffered_size); ESP_LOGI(TAG, "[UART DATA]: %d, size: %d", event.size, buffered_size); uart_read_bytes(EX_UART_NUM, dtmp, event.size, portMAX_DELAY); blink_led(led_strip, 1, dtmp); uart_flush_input(EX_UART_NUM); break; GeSHi ©...
16 in this example, we don't process data in event, but read data outside.*/ 17 case UART_DATA: 18 uart_get_buffered_data_len(uart_num, &buffered_size); 19 ESP_LOGI(TAG, "data, len: %d; buffered len: %d", event.size, buffered_size); 20 break; 21 //Event of HW FIFO ...