Waveshare NRF52840 - Chapter 5. UART; Codes

To Next Page

To Previous Page

NRF52840 Eval Kit User Manual

Vision: V1.0.1 Date: 2019.01.19 23 / 72

CHAPTER 5. UART

In this chapter, we describe about how to use UART interface of NRF52840. The

example used herein is 003_UART. With the example, data can be sent from NRF52840

to UART interface, and LED on eval board will turn on/off when receive corresponding

data from UART interface.

CODES

uart.h

#ifndef _UART_H_

#define _UART_H_

#include "nrf.h"

#include "nrf_gpio.h"

#include "app_uart.h"

#include "nrf_uart.h"

#define RX_PIN_NUMBER NRF_GPIO_PIN_MAP(0,8)

#define TX_PIN_NUMBER NRF_GPIO_PIN_MAP(0,6)

#define CTS_PIN_NUMBER NRF_GPIO_PIN_MAP(0,7)

#define RTS_PIN_NUMBER NRF_GPIO_PIN_MAP(0,5)

#define UART_HWFC APP_UART_FLOW_CONTROL_DISABLED

#define MAX_TEST_DATA_BYTES (15U)

#define UART_TX_BUF_SIZE 256

#define UART_RX_BUF_SIZE 256

extern app_uart_comm_params_t comm_params;

void uart_error_handle(app_uart_evt_t * p_event);

#endif

uart.c:

#include "uart.h"