Using two UART in nrf51822

Question

I want to use two UARTS ie uart0 and uart1. I read that nrf51822 gpio pins can be set as rx & tx but i couldnt find any example. 
 I am using SDK12.3 
 Please attach some links for same.

Håkon Alseth · Accepted Answer

Please see the example 
RF5_SDK_12.3.0_d7731ad\examples\peripheral\uart. 
 In main.c, there's a uart init function call: 
 ....
 const app_uart_comm_params_t comm_params =
 {
 RX_PIN_NUMBER,
 TX_PIN_NUMBER,
 RTS_PIN_NUMBER,
 CTS_PIN_NUMBER,
 APP_UART_FLOW_CONTROL_ENABLED,
 false,
 UART_BAUDRATE_BAUDRATE_Baud115200
 };

 APP_UART_FIFO_INIT(&comm_params,
 UART_RX_BUF_SIZE,
 UART_TX_BUF_SIZE,
 uart_error_handle,
 APP_IRQ_PRIORITY_LOWEST,
 err_code);
.... 
 
 You can change the define (in pca10028.h directly, or by adding your own board: https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v12.3.0/sdk_for_custom_boards.html?cp=7_5_8_1_5 ) or give the function a pin-number of choice. 
 
 Kind regards, 
 Håkon

Using two UART in nrf51822

Top Replies