62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
#ifndef HANDLERS_H
|
|
#define HANDLERS_H
|
|
|
|
#include "pico/stdlib.h"
|
|
|
|
#define PW_SWITCH_PIN 0
|
|
#define PW_SWITCH_DELAY_MS 100
|
|
#define PW_STATE_PIN 1
|
|
#define PW_STATE_UPDATE_REPEAT_DELAY_MS 100
|
|
|
|
bool current_state = false;
|
|
struct repeating_timer * state_update_timer = NULL;
|
|
|
|
// handler fn to set the power switch pin to an active state
|
|
int64_t pw_sw_on_async (alarm_id_t id, void * user_data) {
|
|
cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, 0);
|
|
gpio_put(PW_SWITCH_PIN, 1);
|
|
return 0; // do not reschedule alarm
|
|
}
|
|
|
|
// handler fn to set the power switch pin to an inactive state
|
|
int64_t pw_sw_off_async (alarm_id_t id, void * user_data) {
|
|
cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, 1);
|
|
gpio_put(PW_SWITCH_PIN, 0);
|
|
return 0; // do not reschedule alarm
|
|
}
|
|
|
|
// hander fn to read from the power state
|
|
bool update_current_state_async (repeating_timer_t * rt) {
|
|
current_state = gpio_get(PW_STATE_PIN);
|
|
return true; // continue repeating alarm
|
|
}
|
|
|
|
// handler fn called to attempt to set the power state to the requested state
|
|
bool bmc_power_handler (bool requested_state) {
|
|
if (requested_state != current_state) {
|
|
add_alarm_in_ms(0, pw_sw_on_async, NULL, true);
|
|
add_alarm_in_ms(PW_SWITCH_DELAY_MS, pw_sw_off_async, NULL, true);
|
|
}
|
|
}
|
|
|
|
void bmc_handler_init () {
|
|
// init power switch pin as output
|
|
gpio_init(PW_SWITCH_PIN);
|
|
gpio_set_dir(PW_SWITCH_DELAY_MS, GPIO_OUT);
|
|
|
|
// init power state pin as input
|
|
gpio_init(PW_STATE_PIN);
|
|
gpio_set_dir(PW_STATE_PIN, GPIO_IN);
|
|
|
|
// set repeating timer for power state update
|
|
state_update_timer = malloc(sizeof(struct repeating_timer));
|
|
add_repeating_timer_ms(PW_STATE_UPDATE_REPEAT_DELAY_MS, update_current_state_async, NULL, state_update_timer);
|
|
}
|
|
|
|
void bmc_handler_deinit () {
|
|
cancel_repeating_timer(state_update_timer);
|
|
free(state_update_timer);
|
|
state_update_timer = NULL;
|
|
}
|
|
|
|
#endif |