axp192 support added

src/i2cscan.cpp

@@ -0,0 +1,101 @@
+// Basic config
+#include "globals.h"
+#include "i2cscan.h"
+
+// Local logging tag
+static const char TAG[] = __FILE__;
+
+#define SSD1306_PRIMARY_ADDRESS (0x3D)
+#define SSD1306_SECONDARY_ADDRESS (0x3C)
+#define BME_PRIMARY_ADDRESS (0x77)
+#define BME_SECONDARY_ADDRESS (0x76)
+#define AXP192_PRIMARY_ADDRESS (0x34)
+#define MCP_24AA02E64_PRIMARY_ADDRESS (0x50)
+
+int i2c_scan(void) {
+
+  int i2c_ret, addr;
+  int devices = 0;
+
+  ESP_LOGI(TAG, "Starting I2C bus scan...");
+
+  for (addr = 8; addr <= 119; addr++) {
+
+    // scan i2c bus with no more to 100KHz
+    Wire.begin(SDA, SCL, 100000);
+    Wire.beginTransmission(addr);
+    Wire.write(addr);
+    i2c_ret = Wire.endTransmission();
+
+    if (i2c_ret == 0) {
+      devices++;
+
+      switch (addr) {
+
+      case SSD1306_PRIMARY_ADDRESS:
+      case SSD1306_SECONDARY_ADDRESS:
+        ESP_LOGI(TAG, "0x%X: SSD1306 Display controller", addr);
+        break;
+
+      case BME_PRIMARY_ADDRESS:
+      case BME_SECONDARY_ADDRESS:
+        ESP_LOGI(TAG, "0x%X: Bosch BME MEMS", addr);
+        break;
+
+      case AXP192_PRIMARY_ADDRESS:
+        ESP_LOGI(TAG, "0x%X: AXP192 power management", addr);
+#ifdef HAS_PMU
+        AXP192_init();
+#endif
+        break;
+
+      case MCP_24AA02E64_PRIMARY_ADDRESS:
+        ESP_LOGI(TAG, "0x%X: 24AA02E64 serial EEPROM", addr);
+        break;
+
+      default:
+        ESP_LOGI(TAG, "0x%X: Unknown device", addr);
+        break;
+      }
+    } // switch
+  }   // for loop
+
+  ESP_LOGI(TAG, "I2C scan done, %u devices found.", devices);
+
+  return devices;
+}
+
+#ifdef HAS_PMU
+
+void AXP192_init(void) {
+
+  AXP20X_Class axp;
+
+  if (axp.begin(Wire, AXP192_PRIMARY_ADDRESS))
+    ESP_LOGI(TAG, "AXP192 PMU initialization failed");
+  else {
+
+    axp.setPowerOutPut(AXP192_LDO2, AXP202_ON);
+    axp.setPowerOutPut(AXP192_LDO3, AXP202_ON);
+    axp.setPowerOutPut(AXP192_DCDC2, AXP202_ON);
+    axp.setPowerOutPut(AXP192_EXTEN, AXP202_ON);
+    axp.setPowerOutPut(AXP192_DCDC1, AXP202_ON);
+
+    /*
+    axp.setChgLEDMode(LED_BLINK_4HZ);
+    axp.setDCDC1Voltage(3300);
+
+    pinMode(PMU_IRQ, INPUT_PULLUP);
+    attachInterrupt(PMU_IRQ, [] { pmu_irq = true; }, FALLING);
+
+    axp.adc1Enable(AXP202_BATT_CUR_ADC1, 1);
+    axp.enableIRQ(AXP202_VBUS_REMOVED_IRQ | AXP202_VBUS_CONNECT_IRQ |
+                      AXP202_BATT_REMOVED_IRQ | AXP202_BATT_CONNECT_IRQ,
+                  1);
+    axp.clearIRQ();
+    */
+
+    ESP_LOGI(TAG, "AXP192 PMU initialized.");
+  }
+#endif // HAS_PMU
+}

src/main.cpp

@@ -169,6 +169,8 @@ void setup() {
   ESP_LOGI(TAG, "TinyGPS+ version %s", TinyGPSPlus::libraryVersion());
 #endif
 
+  i2c_scan();
+
 #endif // verbose
 
   // read (and initialize on first run) runtime settings from NVRAM