Adding LIS3DH sample code to low power partition

* ESP will respond to a double tap with its ISR
  Possibility to add additional actions depending on requirements

Author: LIFsCode

eloc610LowPowerPartition/platformio.ini

@@ -17,8 +17,8 @@ platform = espressif32@~6.1.0
 board = esp32dev
 
 framework =  espidf
-upload_port = COM3
-monitor_port = COM3
+;upload_port = COM3
+;monitor_port = COM3
 monitor_speed = 115200
 monitor_filters = esp32_exception_decoder
 board_build.partitions = elocPartitions.csv

eloc610LowPowerPartition/src/ElocSystem.hpp

@@ -37,7 +37,7 @@ class ElocSystem
     ELOC_IOEXP* mIOExpInstance;
     LIS3DH* mLis3DH;
 public:
-    inline static ElocSystem& Get() {
+    inline static ElocSystem& GetInstance() {
         static ElocSystem System;
         return System;
     }
@@ -54,9 +54,18 @@ class ElocSystem
         assert(mLis3DH != NULL);
         return *mLis3DH;
     }
+    inline bool hasI2C() const {
+        return mI2CInstance != NULL;
+    }
+    inline bool hasIoExpander() const {
+        return mIOExpInstance != NULL;
+    }
+    inline bool hasLIS3DH() const {
+        return mLis3DH != NULL;
+    }
 };
 
 
 
 
-#endif // ELOCSYSTEM_HPP_
+#endif // ELOCSYSTEM_HPP_

eloc610LowPowerPartition/src/ManualWakeup.cpp

@@ -70,7 +70,7 @@ void wakeup_task (void *pvParameters)
             lis3dh_int_click_source_t click_src = {};
 
             // get the source of the interrupt and reset *INTx* signals
-            ElocSystem::Get().getLIS3DH().lis3dh_get_int_click_source (&click_src);
+            ElocSystem::GetInstance().getLIS3DH().lis3dh_get_int_click_source (&click_src);
 
 
             // in case of click detection interrupt   
@@ -82,9 +82,9 @@ void wakeup_task (void *pvParameters)
 }
 
 
-esp_err_t ManualWakeupConfig() {
+esp_err_t ManualWakeupConfig(bool installGpioIsr) {
 
-    LIS3DH& lis3dh = ElocSystem::Get().getLIS3DH();
+    LIS3DH& lis3dh = ElocSystem::GetInstance().getLIS3DH();
 
     /** --- INTERRUPT CONFIGURATION PART ---- */
 
@@ -103,8 +103,10 @@ esp_err_t ManualWakeupConfig() {
 
     xTaskCreate(wakeup_task, "Click Sense Wakeup", 2048, NULL, 1, NULL);
 
-    gpio_install_isr_service(ESP_INTR_FLAG_LEVEL1);
-    gpio_isr_handler_add(LIS3DH_INT_PIN, int_signal_handler, (void *)LIS3DH_INT_PIN);
+    if (installGpioIsr) {
+        ESP_ERROR_CHECK(GPIO_INTR_PRIO);
+    }
+    ESP_ERROR_CHECK(gpio_isr_handler_add(LIS3DH_INT_PIN, int_signal_handler, (void *)LIS3DH_INT_PIN));
 
     lis3dh.lis3dh_set_int_click_config (&lis3dh_click_config);
     lis3dh.lis3dh_enable_int (lis3dh_int_click, lis3dh_int1_signal, true);

eloc610LowPowerPartition/src/ManualWakeup.hpp

@@ -23,7 +23,11 @@
 
 #include "esp_err.h"
 
-esp_err_t ManualWakeupConfig();
+/// @brief ManualWakeupConfig will setup LIS3DH for waking up ESP on double tap event
+/// @param installGpioIsr : true: ManualWakeupConfig will call gpio_install_isr_service()
+///                       : false: ManualWakeupConfig() will expect gpio isr to be already installed
+/// @return 
+esp_err_t ManualWakeupConfig(bool installGpioIsr);
 
 
 

eloc610LowPowerPartition/src/config.cpp

@@ -17,7 +17,7 @@ i2s_config_t i2s_mic_Config = {
     #endif
 
     .communication_format = I2S_COMM_FORMAT_I2S,
-    .intr_alloc_flags = ESP_INTR_FLAG_LEVEL1,
+    .intr_alloc_flags = ESP_INTR_FLAG_LEVEL3,
     .dma_buf_count = gBufferCount,  //so 2000 sample  buffer at 16khz sr gives us 125ms to do our writing
     .dma_buf_len = gBufferLen,  // 8 buffers gives us half  second
     .use_apll = gUseAPLL, //not getting set. gUseAPLL, //the only thing that works with LowPower/APLL is 16khz 12khz??

eloc610LowPowerPartition/src/config.h

@@ -1,5 +1,6 @@
 #include <freertos/FreeRTOS.h>
 #include <driver/i2s.h>
+#include "lis3dh_types.h"
 
 
 
@@ -39,25 +40,31 @@
         #define GPIO_BUTTON GPIO_NUM_0
         #define OTHER_GPIO_BUTTON GPIO_NUM_0
         #define VOLTAGE_PIN GPIO_NUM_34
+
+        /** Interrupt definitions*/
+        #define GPIO_INTR_PRIO ESP_INTR_FLAG_LEVEL1
 
 
 
         #define I2S_MIC_LEFT_RIGHT_CLOCK GPIO_NUM_5
         #define I2S_MIC_SERIAL_CLOCK GPIO_NUM_18     
         #define I2S_MIC_SERIAL_DATA   GPIO_NUM_19        
 
-		// i2c config
-		#define USE_I2C
-
-		#define I2C_PORT I2C_NUM_0
-		#define I2C_SDA_PIN GPIO_NUM_23
-		#define I2C_SCL_PIN GPIO_NUM_22
-		#define I2C_SPEED_HZ 100000
-
-		/* LIS3DH Config*/
-		#define LIS3DH_INT_PIN GPIO_NUM_12
-		extern lis3dh_config_t lis3dh_config;
-		extern lis3dh_int_click_config_t lis3dh_click_config;
+        // i2c config
+        #define USE_I2C
+
+        #define I2C_PORT I2C_NUM_0
+        #define I2C_SDA_PIN GPIO_NUM_23
+        #define I2C_SCL_PIN GPIO_NUM_22
+        #define I2C_SPEED_HZ 100000
+
+        /* LIS3DH Config*/
+        #define LIS3DH_INT_PIN GPIO_NUM_12
+        extern lis3dh_config_t lis3dh_config;
+        extern lis3dh_int_click_config_t lis3dh_click_config;
+
+        /* Buzzer Config */
+        #define BUZZER_PIN GPIO_NUM_13
 
 
 #endif

eloc610LowPowerPartition/src/main.cpp

@@ -29,6 +29,11 @@
 #include "esp_sleep.h"
 #include "rtc_wdt.h"
 //#include "soc/efuse_reg.h"
+
+#include "lis3dh.h"
+#include "ElocSystem.hpp"
+#include "ManualWakeup.hpp"
+
 static const char *TAG = "main";
 
 
@@ -667,6 +672,8 @@ I2SSampler *input;
 gpio_set_level(STATUS_LED, 0);
 gpio_set_level(BATTERY_LED, 0);
 
+ESP_LOGI(TAG, "Setting up System...");
+ElocSystem::GetInstance();
 
 
 //delay(30000);
@@ -791,9 +798,14 @@ printMemory();
 
 
 
+ESP_ERROR_CHECK(gpio_install_isr_service(GPIO_INTR_PRIO));
+
+ESP_LOGI(TAG, "Creating LIS3DH wakeup task...");
+if (esp_err_t err = ManualWakeupConfig(false)) {
+  ESP_LOGI(TAG, "ManualWakeupConfig %s", esp_err_to_name(err));
+}
+
 
- 
-ESP_ERROR_CHECK(gpio_install_isr_service(0));
 ESP_ERROR_CHECK(gpio_isr_handler_add(GPIO_BUTTON, buttonISR, (void *)GPIO_BUTTON));
 ESP_ERROR_CHECK(gpio_isr_handler_add(GPIO_BUTTON, buttonISR, (void *)OTHER_GPIO_BUTTON));