NRF52840 Eval Kit User Manual
Vision: V1.0.1 Date: 2019.01.19
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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"
