added detection of BNO055 and fixed nRF52 compat issue

Author: Laurence Bank

examples/I2C_Detector/I2C_Detector.ino

@@ -59,7 +59,7 @@ const char *szNames[]  = {"Unknown","SSD1306","SH1106","VL53L0X","BMP180", "BMP2
                 "MPU-60x0", "MPU-9250", "MCP9808","LSM6DS3", "ADXL345", "ADS1115","MAX44009",
                 "MAG3110", "CCS811", "HTS221", "LPS25H", "LSM9DS1","LM8330", "DS3231", "LIS3DH",
                 "LIS3DSH","INA219","SHT3X","HDC1080","MPU6886","BME680", "AXP202", "AXP192", "24AA02XEXX", 
-                "DS1307", "MPU688X", "FT6236G", "FT6336G", "FT6336U", "FT6436", "BM8563"};
+                "DS1307", "MPU688X", "FT6236G", "FT6336G", "FT6336U", "FT6436", "BM8563","BNO055"};
 #endif
 
 BBI2C bbi2c;

library.properties

@@ -1,5 +1,5 @@
 name=BitBang_I2C
-version=2.1.3
+version=2.1.4
 author=Larry Bank <[email protected]>
 maintainer=Larry Bank <[email protected]>
 sentence=Bit-bang the I2C protocol on any 2 GPIO pins on any system.

src/BitBang_I2C.cpp

@@ -556,7 +556,7 @@ void I2CInit(BBI2C *pI2C, uint32_t iClock)
    if (pI2C->bWire) // use Wire library
    {
 #if !defined( _LINUX_ ) && !defined( __AVR_ATtiny85__ )
-#if defined(TEENSYDUINO) || defined( __AVR__ ) || defined( NRF52 ) || defined ( ARDUINO_ARCH_NRF52840 ) || defined(ARDUINO_ARCH_SAM)
+#if defined(TEENSYDUINO) || defined( __AVR__ ) || defined( NRF52 ) || defined ( ARDUINO_ARCH_NRF52840 ) || defined(ARDUINO_ARCH_NRF52) || defined(ARDUINO_ARCH_SAM)
        Wire.begin();
 #else
        if (pI2C->iSDA == 0xff || pI2C->iSCL == 0xff)
@@ -808,6 +808,12 @@ int I2CDiscoverDevice(BBI2C *pI2C, uint8_t i)
 uint8_t j, cTemp[8];
 int iDevice = DEVICE_UNKNOWN;
 
+  if (i == 0x28 || i == 0x29) // Probably a Bosch BNO055
+  {
+    I2CReadRegister(pI2C, i, 0x00, cTemp, 1); // CHIP_ID register
+    if (cTemp[0] == 0xa0)
+       return DEVICE_BNO055;
+  }
   if (i == 0x3c || i == 0x3d) // Probably an OLED display
   {
     I2CReadRegister(pI2C, i, 0x00, cTemp, 1);

src/BitBang_I2C.h

@@ -58,7 +58,8 @@ enum {
   DEVICE_FT6336G,
   DEVICE_FT6336U,
   DEVICE_FT6436,
-  DEVICE_BM8563
+  DEVICE_BM8563,
+  DEVICE_BNO055
 };
 
 typedef struct mybbi2c