I have this main code:
#include <zephyr/kernel.h>
#include <zephyr/device.h>
#include <zephyr/drivers/uart.h>
#include <string.h>
#define MSG_SIZE 32
K_MSGQ_DEFINE(uart_msgq, MSG_SIZE, 10, 4);
static char rx_buf[MSG_SIZE];
static int rx_buf_pos;
#define UART_DEVICE_NODE DT_NODELABEL(uart1)
static const struct device *const uart_dev = DEVICE_DT_GET(UART_DEVICE_NODE);
void serial_cb(const struct device *dev, void *user_data)
{
uint8_t c;
if (!uart_irq_update(uart_dev) || !uart_irq_rx_ready(uart_dev)) {
printk("UART IRQ not ready\r\n");
return;
}
printk("reading datar\r\n");
while (uart_fifo_read(uart_dev, &c, 1) == 1) {
printk("RX: %c\n", c);
if ((c == '\n' || c == '\r') && rx_buf_pos > 0) {
rx_buf[rx_buf_pos] = '\0';
k_msgq_put(&uart_msgq, &rx_buf, K_NO_WAIT);
rx_buf_pos = 0;
} else if (rx_buf_pos < (sizeof(rx_buf) - 1)) {
rx_buf[rx_buf_pos++] = c;
}
}
}
void print_uart(char *buf)
{
for (int i = 0; buf[i] != '\0'; i++) {
uart_poll_out(uart_dev, buf[i]);
k_busy_wait(100);
}
}
int main(void)
{
printk("UART Echo Started\n");
if (!device_is_ready(uart_dev)) {
printk("UART device not ready\n");
return 0;
}
uart_irq_callback_user_data_set(uart_dev, serial_cb, NULL);
uart_irq_rx_enable(uart_dev);
print_uart("Hello from echo bot\r\n");
printk("Hello sent\r\n");
while(true) {
print_uart("Echo: ");
print_uart(" is one wild");
print_uart("\r\n");
//Sleep for a second
k_sleep(K_SECONDS(1));
printk("Sending data to TX\r\n");
}
return 0;
}
With this overlay:
&uart1 {
status = "okay";
current-speed = <115200>;
pinctrl-0 = <&uart1_default>;
pinctrl-1 = <&uart1_sleep>;
pinctrl-names = "default", "sleep";
};
&pinctrl {
uart1_default: uart1_default {
group1 {
psels = <NRF_PSEL(UART_TX, 0, 9)>,
<NRF_PSEL(UART_RX, 0, 10)>;
};
};
uart1_sleep: uart1_sleep {
group1 {
psels = <NRF_PSEL(UART_TX, 0, 9)>,
<NRF_PSEL(UART_RX, 0, 10)>;
low-power-enable;
};
};
};
and this configuration:
CONFIG_SERIAL=y CONFIG_UART_INTERRUPT_DRIVEN=y CONFIG_UART_CONSOLE=n CONFIG_USE_SEGGER_RTT=y CONFIG_RTT_CONSOLE=y CONFIG_LOG=y CONFIG_LOG_BACKEND_RTT=y CONFIG_PRINTK=y
I am using a nrf52840 dev board and have connected P0.06 and P0.08.
Why does it not trigger TX and write to JRTTLinkEXE the data sent in the main loop?
