nRF9160 DK send/receive data from UART1

RE: nRF9160 DK send/receive data from UART1

Adeel — Tue, 06 Oct 2020 14:16:30 GMT

Hi,

Anyone to reply on this thread as its useful for me. In line 24 of the above code, I get error on: &fifo_uart_tx_data as undeclared. I could not find it in the drivers/uart.h library of uart.

Any way to fix this error ?

Regards,

Adeel.

RE: nRF9160 DK send/receive data from UART1

Hoang — Thu, 16 May 2019 16:09:36 GMT

Hi Moshe,

Sorry, I didnt add the library in my code,

You need to add:

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

the function fifo_uart_tx_data is defined in uart.h lib

Goodluck

RE: nRF9160 DK send/receive data from UART1

MosheSmartAmr — Thu, 16 May 2019 09:46:53 GMT

HI hoang,
I'm practically trying to do the same thing.

I did not understand what is this fifo fifo_uart_tx_data,

did you create it ? (trying this code i get fifo_uart_tx_data undeclared error)

RE: nRF9160 DK send/receive data from UART1

Hoang — Tue, 02 Apr 2019 06:47:32 GMT

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,

RE: nRF9160 DK send/receive data from UART1

Martin Lesund — Fri, 29 Mar 2019 09:00:55 GMT

Hi Hng,
I am sorry you feel that way, it is my fault for misunderstanding.

It would be fantastic if you could share with the community the solution to your issue (?) 😄

Best regards,

Martin L.

RE: nRF9160 DK send/receive data from UART1

Hoang — Thu, 28 Mar 2019 16:39:52 GMT

so sorry for confusing questions.

I just want to send/recive on UART1. And I mean uart_cb()

i found the solution for me.

I really unhappy with support from nordic, it takes too long time.

Anyway, thanks so much, I’m really appreciate your support.

regards

hng

RE: nRF9160 DK send/receive data from UART1

Martin Lesund — Thu, 28 Mar 2019 14:53:56 GMT

Hi Hoang,

From the other thread it seemed like you found a solution.

Anyway, I am a little unsure what you mean with your question.
Maybe this thread can be helpful.

RE: nRF9160 DK send/receive data from UART1

Hoang — Fri, 15 Mar 2019 06:34:53 GMT

Dear Martin,

Thanks for your short answer, but I couldn't solve my problem.

UART0 is using for debug (printk())

I want to use UART1 to communicate with another sensor.

with uart_cd() I can read data from UART0/UART1, I want to send data to UART1

Thanks,

Regards

RE: nRF9160 DK send/receive data from UART1

Martin Lesund — Thu, 14 Mar 2019 13:57:34 GMT

Duplicate