1 files changed, 125 insertions, 0 deletions
diff --git a/main/src/lock.c b/main/src/lock.c
new file mode 100644
index 0000000..3d01383
--- /dev/null
+++ b/main/src/lock.c
@@ -0,0 +1,125 @@
+#include <stdio.h>
+#include <string.h>
+#include <freertos/FreeRTOS.h>
+#include <freertos/task.h>
+#include <freertos/timers.h>
+#include <freertos/queue.h>
+#include <esp_log.h>
+#include <driver/gpio.h>
+#include <driver/adc.h>
+
+#include <hap.h>
+
+#include <hap_apple_servs.h>
+#include <hap_apple_chars.h>
+
+#include <app_wifi.h>
+#include <app_hap_setup_payload.h>
+
+#include <event_queue.h>
+#include <lock.h>
+
+#define INTERCOM_LOCK_GPIO_LOCKED 0
+#define INTERCOM_LOCK_GPIO_UNLOCKED 1
+
+#define HAP_LOCK_TARGET_STATE_UNSECURED 0
+#define HAP_LOCK_TARGET_STATE_SECURED 1
+
+static hap_val_t HAP_LOCK_CURRENT_STATE_UNSECURED = {.u = 0};
+static hap_val_t HAP_LOCK_CURRENT_STATE_SECURED = {.u = 1};
+
+static TimerHandle_t intercom_lock_timer = NULL; // lock the door when timer triggered
+static hap_char_t *intercom_lock_current_state;
+static hap_char_t *intercom_lock_target_state;
+
+void intercom_lock_unsecure()
+{
+    ESP_LOGI(TAG, "Intercom unlock event processed");
+
+    gpio_set_level(CONFIG_HOMEKIT_INTERCOM_LOCK_GPIO_PIN, INTERCOM_LOCK_GPIO_UNLOCKED);
+    hap_char_update_val(intercom_lock_current_state, &HAP_LOCK_CURRENT_STATE_UNSECURED);
+
+    xTimerReset(intercom_lock_timer, 10);
+}
+
+void intercom_lock_secure()
+{
+    ESP_LOGI(TAG, "Intercom lock event processed");
+
+    gpio_set_level(CONFIG_HOMEKIT_INTERCOM_LOCK_GPIO_PIN, INTERCOM_LOCK_GPIO_LOCKED);
+    hap_char_update_val(intercom_lock_current_state, &HAP_LOCK_CURRENT_STATE_SECURED);
+}
+
+void intercom_lock_timeout()
+{
+    ESP_LOGI(TAG, "Intercom lock timeout event processed");
+
+    intercom_event_queue_lock_secure();
+    hap_val_t target_lock_secured = {.u = HAP_LOCK_TARGET_STATE_SECURED};
+    hap_char_update_val(intercom_lock_target_state, &target_lock_secured);
+}
+
+int intercom_lock_write_cb(hap_write_data_t write_data[], int count, void *serv_priv, void *write_priv)
+{
+    int i, ret = HAP_SUCCESS;
+    hap_write_data_t *write;
+    for (i = 0; i < count; i++)
+    {
+        write = &write_data[i];
+        if (!strcmp(hap_char_get_type_uuid(write->hc), HAP_CHAR_UUID_LOCK_TARGET_STATE))
+        {
+            ESP_LOGI(TAG, "Received Write. Intercom lock %d", write->val.u);
+
+            switch (write->val.u)
+            {
+            case HAP_LOCK_TARGET_STATE_UNSECURED:
+                intercom_event_queue_lock_unsecure();
+                break;
+            case HAP_LOCK_TARGET_STATE_SECURED:
+                intercom_event_queue_lock_secure();
+                break;
+            }
+
+            /* Update target state */
+            hap_char_update_val(write->hc, &(write->val));
+            *(write->status) = HAP_STATUS_SUCCESS;
+        }
+        else
+        {
+            *(write->status) = HAP_STATUS_RES_ABSENT;
+        }
+    }
+    return ret;
+}
+
+void intercom_lock_timer_cb(TimerHandle_t timer)
+{
+    ESP_LOGI(TAG, "Intercom lock timer fired - event queued");
+
+    intercom_event_queue_lock_timeout();
+}
+
+hap_serv_t *intercom_lock_init(uint32_t key_gpio_pin)
+{
+    hap_serv_t *intercom_lock_service = hap_serv_lock_mechanism_create(HAP_LOCK_CURRENT_STATE_SECURED.u, HAP_LOCK_TARGET_STATE_SECURED);
+    hap_serv_add_char(intercom_lock_service, hap_char_name_create("Intercom Lock"));
+
+    intercom_lock_current_state = hap_serv_get_char_by_uuid(intercom_lock_service, HAP_CHAR_UUID_LOCK_CURRENT_STATE);
+    intercom_lock_target_state = hap_serv_get_char_by_uuid(intercom_lock_service, HAP_CHAR_UUID_LOCK_TARGET_STATE);
+
+    hap_serv_set_write_cb(intercom_lock_service, intercom_lock_write_cb); /* Set the write callback for the service */
+
+    intercom_lock_timer = xTimerCreate("intercom_lock_timer", pdMS_TO_TICKS(CONFIG_HOMEKIT_INTERCOM_LOCK_TIMEOUT), pdFALSE, 0, intercom_lock_timer_cb);
+
+    gpio_config_t io_conf;
+
+    io_conf.intr_type = GPIO_INTR_DISABLE;       /* Disable interrupt  */
+    io_conf.pin_bit_mask = 1 << key_gpio_pin;    /* Bit mask of the pins */
+    io_conf.mode = GPIO_MODE_OUTPUT;             /* Set as input mode */
+    io_conf.pull_up_en = GPIO_PULLUP_DISABLE;    /* Disable internal pull-up */
+    io_conf.pull_down_en = GPIO_PULLDOWN_ENABLE; /* Enable internal pull-down */
+
+    gpio_config(&io_conf); /* Set the GPIO configuration */
+
+    return intercom_lock_service;
+}