Dear ,
I am using nrf 9160 DK,
and trying to send a package of data to UART.
For example my package is: "LONGITUDEx:10.123456,LATITUDE:59.012324,UTC:20190513095612"
I tried to use: uart_fifo_fill(struct device *dev, const u8_t *tx_data, int size) to send.
But I got the problem, the package is too long ( longer than u8_t ?!), so i just send 32bytes of my package: "LONGITUDE1:10.123456,LATITUDE:59"
I tried to split to 2small packages and send without delay between them. Result: only 1 package is sent! I lost another one
split to 2small packages, and added a delay between them, and send. It sent
I don't want the delay between them. I want to send a continuous package (more than 32bytes). How can I do it? Can you help me.
My code:
static u8_t uart_buf[1024];
static K_FIFO_DEFINE(fifo_uart_tx_data);
static K_FIFO_DEFINE(fifo_uart_rx_data);
struct uart_data_t {
void *fifo_reserved;
u8_t data[1024];
u16_t len;
};
/********************************************/
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 *uart_send= device_get_binding("UART_2");
uart_irq_callback_set(uart_send, uart_cb);
printk("Testing1: \n");
uart_fifo_fill(uart_send, "LONGITUDE1:10.123456,LATITUDE:59.012324,UTC:20190513095612\r" ,sizeof("LONGITUDE:10.123456,LATITUDE:59.012324,UTC:20190513095612\r"));
k_sleep(100);
printk("Testing2: \n");
uart_fifo_fill(uart_send, "LONGITUDE2:10.123456,LATITUDE:5" ,sizeof("LONGITUDE:10.123456,LATITUDE:5"));
uart_fifo_fill(uart_send, "9.012324,UTC:20190513095612\r" ,sizeof("9.012324,UTC:20190513095612\r"));
k_sleep(100);
printk("Testing3: \n");
uart_fifo_fill(uart_send, "LONGITUDE3:10.123456,LATITUDE:5" ,sizeof("LONGITUDE:10.123456,LATITUDE:5"));
k_sleep(1);
uart_fifo_fill(uart_send, "9.012324,UTC:20190513095612\r" ,sizeof("9.012324,UTC:20190513095612\r"));
printk("Done testing\n");
while (1) {
k_cpu_idle();
}
}
Thanks so much
Hng
