RE: nrf9160 DK serial send - recieve buffer

Adev — Tue, 17 Dec 2019 12:45:05 GMT

Hi, thank you for help, i managed to make it work now :) the problem was in my python script i was using for serial communication.

Best regards,

Cojocari Adrian

Heidi — Tue, 17 Dec 2019 12:43:59 GMT

Hi! Could you send me your prj.conf file, thanks!

Best regards,

Heidi

Adev — Tue, 17 Dec 2019 11:39:15 GMT

I tried another, more simple aproach :

void uart_sendCOM(struct device *x)
{
k_sleep(1000);
uart_fifo_fill(x, "test\r", strlen("test\r"));

}

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

if (uart_irq_rx_ready(x))
{
data_length = uart_fifo_read(x, &uart_buf[uart_buff_len], sizeof(uart_buf));
uart_buff_len += data_length;
}

if (uart_buff_len == UART_BUFF_MAX_SIZE || uart_buf[uart_buff_len - 1] == '\n' || uart_buf[uart_buff_len - 1] == '\r')
{
uart_buff_len = 0;
}
}

In main() I have :

uart = device_get_binding("UART_0");
if (!uart)
{
printk("Herror\r\n"); // error happens.
}

uart_irq_callback_set(uart, uart_cb);
uart_irq_rx_enable(uart);
printk("UART loopback start!\n");

The problem is that recieve works good, but send part is not working...