<environment>
- Windows10
- modem fw v1.2.0
- nrf v1.3.0
I try to receive "OK" message after sending an AT command "AT+CFUN=1" using at_cmd.c functions but can't receive it.
How can I do that?
This doesn't work
#include <modem/at_cmd.h>
#define RX_BUF_LEN 256
char buf[RX_BUF_LEN];
void main()
{
int ret = 0;
enum at_cmd_state state;
if (at_cmd_init() != 0) {
printk("Error: ret = %d\n", ret);
}
ret = at_cmd_write("AT+CFUN=1", buf, RX_BUF_LEN, &state);
printk("---------\n%s\n%s", "AT+CFUN=1", buf);
if (ret != 0) {
printk("Error: ret = %d\n", ret);
}
.
.
.
}
Then I used semaphore and and at_notif.c referring to lte_lc.c but at_handler doesn't receive a message.
What's the difference between at_cmd_write_with_callback and at_notif_register_handler?
#include <zephyr.h>
#include <string.h>
#include <stdio.h>
#include <modem/lte_lc.h>
#include <modem/at_cmd.h>
#define RX_BUF_LEN 256
char buf[RX_BUF_LEN];
static struct k_sem link;
static void at_handler(void *context, const char *response)
static void at_handler(void *context, const char *response)
{
ARG_UNUSED(context);
if (response == NULL) {
printk("Response buffer is NULL-pointer\n");
return;
}
printk("%s\n",response);
k_sem_give(&link);
}
void main()
{
int ret = 0;
enum at_cmd_state state;
k_sem_init(&link, 0, 1);
at_notif_init();
if (at_cmd_init() != 0) {
printk("Error: ret = %d\n", ret);
}
ret = at_notif_register_handler(NULL, at_handler);
if (ret) {
printk("Can't register AT handler, error: %d\n", ret);
return;
}
ret = at_cmd_write("AT+CFUN=1", NULL, 0, NULL);
printk("%s\n", "AT+CFUN=1");
if (ret < 0) {
printk("Error: ret = %d\n", ret);
return;
}
ret = k_sem_take(&link, K_SECONDS(60));
if (ret == -EAGAIN) {
printk("Network connection attempt timed out\n");
return;
}
Any tip?
