串口支持一次性传输多个byte

components/libraries/log/src/nrf_log_backend_uart.c

@@ -45,7 +45,7 @@
 #include "nrf_drv_uart.h"
 #include "app_error.h"
 
-nrf_drv_uart_t m_uart = NRF_DRV_UART_INSTANCE(0);
+nrf_drv_uart_t m_uart = NRF_DRV_UART_INSTANCE(1);
 
 static uint8_t m_string_buff[NRF_LOG_BACKEND_UART_TEMP_BUFFER_SIZE];
 static volatile bool m_xfer_done;

components/libraries/uart/app_uart.c

@@ -43,7 +43,7 @@
 #include "nrf_drv_uart.h"
 #include "nrf_assert.h"
 
-static uint8_t tx_buffer[1];
+static uint8_t tx_buffer[256];
 static uint8_t rx_buffer[1];
 static volatile bool rx_done;
 static app_uart_event_handler_t   m_event_handler;            /**< Event handler function. */
@@ -151,6 +151,9 @@ uint32_t app_uart_put(uint8_t byte)
     }
 }
 
+
+
+
 uint32_t app_uart_flush(void)
 {
     return NRF_SUCCESS;

components/libraries/uart/app_uart.h

@@ -252,6 +252,11 @@ uint32_t app_uart_flush(void);
 uint32_t app_uart_close(void);
 
 
+uint32_t app_uart_put_bytes(
+                           uint8_t const *        p_data,
+                           uint8_t                length);
+
+
 
 #ifdef __cplusplus
 }

components/libraries/uart/app_uart_fifo.c

@@ -243,6 +243,14 @@ uint32_t app_uart_put(uint8_t byte)
     return err_code;
 }
 
+uint32_t app_uart_put_bytes(
+                           uint8_t const *        p_data,
+                           uint8_t                length){
+                return nrf_drv_uart_tx(&app_uart_inst, p_data, length);
+
+}
+
+
 
 uint32_t app_uart_close(void)
 {