Added ToF interrupt, switch to SLEEP mode while sampling.

Signed-off-by: Yilin Sun <imi415@imi.moe>

lib/sensors

@@ -1 +1 @@
-Subproject commit 23ff8ae04f14cacffabcac75c98f6dff32c7c5d3
+Subproject commit 11283beab731b14b8812dade573fa7509e7c3e23

src/main.c

@@ -22,6 +22,7 @@
 #include "app_ranging_impl.h"
 #include "app_sensors_impl.h"
 
+extern void SystemClock_Config_MSI2MHz(void);
 extern void SystemClock_Config(void);
 
 static app_sensors_impl_t s_dht_impl = {
@@ -81,6 +82,8 @@ static VL53L1_Dev_t s_ranging = {
     .OpsData = &s_ranging_impl,
 };
 
+static volatile bool s_ranging_irq;
+
 int main(void) {
     /* HAL */
     HAL_Init();
@@ -140,7 +143,7 @@ int main(void) {
     VL53L1_StaticInit(&s_ranging);
     VL53L1_SetDistanceMode(&s_ranging, VL53L1_DISTANCEMODE_MEDIUM);
     VL53L1_SetMeasurementTimingBudgetMicroSeconds(&s_ranging, 50000);
-    VL53L1_SetInterMeasurementPeriodMilliSeconds(&s_ranging, 500);
+    VL53L1_SetInterMeasurementPeriodMilliSeconds(&s_ranging, 1000);
     VL53L1_StartMeasurement(&s_ranging);
 
     if (HAL_ADCEx_Calibration_Start(&hadc) != HAL_OK) {
@@ -155,8 +158,24 @@ int main(void) {
     int16_t  imu_temp;
     uint16_t vbat;
 
+    s_ranging_irq = false;
+
     for (;;) {
-        HAL_Delay(1000);
+        HAL_SuspendTick();
+
+        SystemClock_Config_MSI2MHz();
+
+        HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);
+
+        SystemClock_Config();
+
+        HAL_ResumeTick();
+
+        if (s_ranging_irq) {
+            s_ranging_irq = false;
+        } else {
+            continue;
+        }
 
         HAL_GPIO_WritePin(LED_GPIO_Port, LED_Pin, GPIO_PIN_RESET);
 
@@ -195,6 +214,8 @@ int main(void) {
             dht_result.temperature, dht_result.humidity, dht_result.pressure / 100.0f, als_result.ch0_value / 48.0,
             als_result.ch1_value / 48.0, (imu_temp / 256.0) + 25.0, ranging_result.RangeMilliMeter,
             (vbat * VDD_VALUE / 4096.0));
+
+        fflush(stdout);
     }
 
 dead_loop:
@@ -204,5 +225,11 @@ dead_loop:
 }
 
 void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin) {
-    /* -- */
+    switch (GPIO_Pin) {
+        case TOF_GPIO_Pin:
+            s_ranging_irq = true;
+            break;
+        default:
+            break;
+    }
 }