nrf9160 DK UART_1

[mschweig]

Hi, 

I am trying to read serial data via UART_1 with v1.2.0 SDK. According to dts-File UART_1 is configured with pin 0 and 1 on the devKit. 

I added 

CONFIG_SERIAL=y
CONFIG_UART_INTERRUPT_DRIVEN=y
CONFIG_UART_1_NRF_UARTE=y
CONFIG_BSD_LIBRARY_TRACE_ENABLED=y 

to the prj.conf. 

Unfortunately, I do not receive any data on UART_1. I already tried to use it with a system workqueue but it does not receive anything either. (I ensured that my transmitter is working)

My Code is (similar to the sample from rallare): 

void uart_cb(struct device *x){
LOG_INF("UART Data recevied");

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;
}

LOG_INF("%s",uart_buf);

}


int uartComm_init(struct k_work_q *work_q)
{

int error = 0;

k_work_q_start(&uart_work_q, uart_stack_area, K_THREAD_STACK_SIZEOF(uart_stack_area), UART_PRIO);

LOG_INF("Init UART");

//UART binding
struct device *uart = device_get_binding("UART_1");
if (!uart)
LOG_ERR("Failed to get UART1");

uart_irq_callback_set(uart, uart_cb);
if(error) LOG_ERR("Error setting UART Callback");

uart_irq_rx_enable(uart);
if(error) LOG_ERR("Error enabling UART Interrupt");
else
LOG_INF("End init UART.");


return error;
}

Init UART is properly called:

Any ideas? 

Kind regards and thanks in advance, 

Manuel

[Hakon]

Hello,

does the uart sample run properly? Are  you able to receive anything on uart_0?

[mschweig]

Hello. 

No the sample does not run either. UART_0 is used for the serial output to the PC right? 
Thats working.

[mschweig]

I am using TeraTerm. Also tried with HTERM and Putty. 

[mschweig]

Hi, any Update? 

Have you tried to use UART with the lwm2m_client?

[Hakon]

mschweig said:

Have you tried to use UART with the lwm2m_client?

 I haven't tried with the lwm2m_client, but I have run the uart sample with both uart0 and uart2. I don't think uart1 is routed to the nrf91, but you can try with uart0 or uart2.

[mschweig]

Uart0 is used for serial communication with the pc. Could you try to use UART with the lwm2m_client?

Kind regards 

[Hakon]

If you want to use UART1 on pin 0 and 1, you need to change the board control options. Go to ncs\zephyr\boards\arm\nrf52840_pca10090\Kconfig and change the default routing of UART1 to "BOARD_PCA10090_UART1_ARDUINO". To update the board controller you need to flash the Zephyr hello_world sample, which is located in ncs\zephyr\samples.