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example/net: add led blink task

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Signed-off-by: HiFiPhile <admin@hifiphile.com>
This commit is contained in:
HiFiPhile
2025-12-28 16:43:09 +01:00
parent 50256886a9
commit bb944729f2
1 changed files with 51 additions and 0 deletions
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51
examples/device/net_lwip_webserver/src/main.c
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@ -67,6 +67,19 @@ try changing the first byte of tud_network_mac_address[] below from 0x02 to 0x00
#define INIT_IP4(a, b, c, d) \
{ PP_HTONL(LWIP_MAKEU32(a, b, c, d)) }
/* Blink pattern
* - 250 ms : device not mounted
* - 1000 ms : device mounted
* - 2500 ms : device is suspended
*/
enum {
BLINK_NOT_MOUNTED = 250,
BLINK_MOUNTED = 1000,
BLINK_SUSPENDED = 2500,
};
static uint32_t blink_interval_ms = BLINK_NOT_MOUNTED;
/* lwip context */
static struct netif netif_data;
@ -218,6 +231,20 @@ uint16_t tud_network_xmit_cb(uint8_t *dst, void *ref, uint16_t arg) {
return pbuf_copy_partial(p, dst, p->tot_len, 0);
}
static void led_blinking_task(void) {
static uint32_t start_ms = 0;
static bool led_state = false;
// Blink every interval ms
if (board_millis() - start_ms < blink_interval_ms) {
return; // not enough time
}
start_ms += blink_interval_ms;
board_led_write(led_state);
led_state = 1 - led_state; // toggle
}
static void handle_link_state_switch(void) {
/* Check for button press to toggle link state */
static bool last_link_state = true;
@ -275,11 +302,35 @@ int main(void) {
tud_task();
sys_check_timeouts(); // service lwip
handle_link_state_switch();
led_blinking_task();
}
return 0;
}
// Invoked when device is mounted
void tud_mount_cb(void) {
blink_interval_ms = BLINK_MOUNTED;
}
// Invoked when device is unmounted
void tud_umount_cb(void) {
blink_interval_ms = BLINK_NOT_MOUNTED;
}
// Invoked when usb bus is suspended
// remote_wakeup_en : if host allow us to perform remote wakeup
// Within 7ms, device must draw an average of current less than 2.5 mA from bus
void tud_suspend_cb(bool remote_wakeup_en) {
(void) remote_wakeup_en;
blink_interval_ms = BLINK_SUSPENDED;
}
// Invoked when usb bus is resumed
void tud_resume_cb(void) {
blink_interval_ms = tud_mounted() ? BLINK_MOUNTED : BLINK_NOT_MOUNTED;
}
/* lwip has provision for using a mutex, when applicable */
/* This implementation is for single-threaded use only */
sys_prot_t sys_arch_protect(void) {