Use accelerometer to wake up screen (#2371)

* WIP accelerometer tinkering

* Debug logging

* RAK LIS3DH sensor

* Deconflict temperature sensor and LIS3DH

* Finishing up

* StateON

* Protobufs

* Default of none

* Formatting

src/detect/ScanI2C.cpp

@@ -34,6 +34,12 @@ ScanI2C::FoundDevice ScanI2C::firstKeyboard() const
     return firstOfOrNONE(2, types);
 }
 
+ScanI2C::FoundDevice ScanI2C::firstAccelerometer() const
+{
+    ScanI2C::DeviceType types[] = {MPU6050, LIS3DH};
+    return firstOfOrNONE(2, types);
+}
+
 ScanI2C::FoundDevice ScanI2C::find(ScanI2C::DeviceType) const
 {
     return DEVICE_NONE;

src/detect/ScanI2C.h

@@ -31,6 +31,8 @@ class ScanI2C
         QMI8658,
         QMC5883L,
         PMSA0031,
+        MPU6050,
+        LIS3DH,
     } DeviceType;
 
     // typedef uint8_t DeviceAddress;
@@ -79,6 +81,8 @@ class ScanI2C
 
     FoundDevice firstKeyboard() const;
 
+    FoundDevice firstAccelerometer() const;
+
     virtual FoundDevice find(DeviceType) const;
 
     virtual bool exists(DeviceType) const;

src/detect/ScanI2CTwoWire.cpp

@@ -248,7 +248,17 @@ void ScanI2CTwoWire::scanPort(I2CPort port)
                 }
                 break;
 
-                SCAN_SIMPLE_CASE(MCP9808_ADDR, MCP9808, "MCP9808 sensor found\n")
+            case MCP9808_ADDR:
+                registerValue = getRegisterValue(ScanI2CTwoWire::RegisterLocation(addr, 0x07), 2);
+                if (registerValue == 0x0400) {
+                    type = MCP9808;
+                    LOG_INFO("MCP9808 sensor found\n");
+                } else {
+                    type = LIS3DH;
+                    LOG_INFO("LIS3DH accelerometer found\n");
+                }
+
+                break;
 
                 SCAN_SIMPLE_CASE(SHT31_ADDR, SHT31, "SHT31 sensor found\n")
                 SCAN_SIMPLE_CASE(SHTC3_ADDR, SHTC3, "SHTC3 sensor found\n")
@@ -261,11 +271,11 @@ void ScanI2CTwoWire::scanPort(I2CPort port)
                 SCAN_SIMPLE_CASE(QMC5883L_ADDR, QMC5883L, "QMC5883L Highrate 3-Axis magnetic sensor found\n")
 
                 SCAN_SIMPLE_CASE(PMSA0031_ADDR, PMSA0031, "PMSA0031 air quality sensor found\n")
+                SCAN_SIMPLE_CASE(MPU6050_ADDR, MPU6050, "MPU6050 accelerometer found\n");
 
             default:
                 LOG_INFO("Device found at address 0x%x was not able to be enumerated\n", addr.address);
             }
-
         } else if (err == 4) {
             LOG_ERROR("Unknown error at address 0x%x\n", addr);
         }