UART communication on nRF9160DK

[Nobel Kuo]

Hi,

I am trying to use UART interface on a nRF9160DK board to connect a rs-232 to rs-485 module for the purpose to  make nRF9160DK a Gateway.

But I have no idea where to find an example how to perform this task exactly using nRF9160DK.

I take SERRER Embedded Studio for ARM on windows 10 as the tool.

Many thanks if anyone can give me a hand. 

[Jared]

Hi,

You can try this.

#include <zephyr.h>
#include <misc/printk.h>
#include <uart.h>

static u8_t uart_buf[1024];

void uart_cb(struct device *x)
{
	uart_irq_update(x);
	int data_length = 0;

	if (uart_irq_rx_ready(x)) {
		data_length = uart_fifo_read(x, uart_buf, sizeof(uart_buf));
		uart_buf[data_length] = 0;
	}
	printk("%s", uart_buf);
}

void main(void)
{
	struct device *uart = device_get_binding("UART_0");

	uart_irq_callback_set(uart, uart_cb);
	uart_irq_rx_enable(uart);
	printk("UART loopback start!\n");
	while (1) {
		k_cpu_idle();
	}

[Abir]

Hello,

I am beginner with NRF 52 DK. I am trying to change the uart example using NRF 52 with SDK 15.02, so that I would send message after  pressing button to my PC via UART connection. Any help please ?

Thanks.

[Jared]

Hi

This question is unrelated to the original question regarding nRF91. Either use the search function to find similar cases on Devzone or create a new ticket. 

Best regards

Jared