Hello,
I am trying to do communication with external module using UART0. But when I connect pin P0.28 (RX of UART0) to external module to receive the data, there is no data on terminal. Same way I tried with UART1 and it worked. I connect pin P0.00 (RX of UART1) to external sensor and the data was on the terminal. So what is the probem with UART0? How can I see the sensor data. I tried to change UART0 pins to P0.10 and P0.11 as TX and RX respectively but still there is no data. For my project I want to use 2 UART, so it is necessary for me that other UART also works.
The code is
#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 *uart = device_get_binding("UART_0");
uart_irq_callback_set(uart, uart_cb);
uart_irq_rx_enable(uart);
printk("UART loopback start!\n");
while (1) {
k_cpu_idle();
}
}
