nRF9160 DK send/receive data from UART1

Question

Dear,

I am using nRF9160 DK,

I can re-define pin for UART0 and UART1, from UART0, i can receive data from UART0/UART1.

#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 *uart0 = device_get_binding("UART_0");
        struct device *uart1 = device_get_binding("UART_1");

	uart_irq_callback_set(uart0, uart_cb);
	uart_irq_rx_enable(uart0);
    uart_irq_callback_set(uart1, uart_cb);
	uart_irq_rx_enable(uart1);
	printk("UART loopback start!\n");
	while (1) {
		k_cpu_idle();
                
	}
}

Now, I want to send data to UART1.

Plz help me

Regards,

Thanks

Hoang · Accepted Answer

Hi 
 I just tried: 
 void uart_sendCOM(struct device *x, u8_t *Cont)
{
 
 u16_t len = strlen(Cont); 
 uart_fifo_fill(x, Cont,len );
 uart_irq_tx_enable(x);
 
 
}
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);

 if (uart_irq_tx_ready(x)) {
 
 struct uart_data_t *buf =
 k_fifo_get(&fifo_uart_tx_data, K_NO_WAIT);
 u16_t written = 0;

 /* Nothing in the FIFO, nothing to send */
 if (!buf) {
 uart_irq_tx_disable(x);
 return;
 }

 while (buf->len > written) {
 written += uart_fifo_fill(x,
 &buf->data[written],
 buf->len - written);
 }

 while (!uart_irq_tx_complete(x)) {
 /* Wait for the last byte to get
 * shifted out of the module
 */
 }

 if (k_fifo_is_empty(&fifo_uart_tx_data)) {
 uart_irq_tx_disable(x);
 }

 k_free(buf);
	
 
	}

 
}

void main(void)
{
	
 struct device *uart1 = device_get_binding("UART_1");
 
 uart_irq_rx_enable(uart1);
 uart_irq_callback_set(uart1, uart_cb);
 uart_sendCOM(uart1, "Hello the world!");
 k_sleep(3000);
 
}
 
 Hope it is correct! 
 
 Thanks 
 Regards,