!BPI:BIT
micro:bit の WROOM32版

http://wiki.banana-pi.org/BPI-Bit


! MPU9250 9-axis sensor
 MPU9250 uses I2C 0x69 address

 # Check I2C communication..
 #include <Wire.h>
  
 void setup()
 {
  Wire.begin();
 
  Serial.begin(115200);       
  while (!Serial);             
  Serial.println("\nI2C Scanner");
 } 
 
 void loop()
 {
  byte error, address;
  int nDevices;
 
  Serial.println("Scanning...");
 
  nDevices = 0;
  for(address = 1; address < 127; address++ ) 
  {
    // The i2c_scanner uses the return value of
    // the Write.endTransmisstion to see if
    // a device did acknowledge to the address.
    Wire.beginTransmission(address);
    error = Wire.endTransmission();
 
    if (error == 0)
    {
      Serial.print("I2C device found at address 0x");
      if (address<16) 
        Serial.print("0");
      Serial.print(address,HEX);
      Serial.println("  !");
 
      nDevices++;
    }
    else if (error==4) 
    {
      Serial.print("Unknown error at address 0x");
      if (address<16) 
        Serial.print("0");
      Serial.println(address,HEX);
    }    
  }
  if (nDevices == 0)
    Serial.println("No I2C devices found\n");
  else
    Serial.println("done\n");
 
  delay(5000);           // wait 5 seconds for next scan
 }

https://qiita.com/naninunenoy/items/bf96f5ca34aacf347a9e

https://x-io.co.uk/open-source-imu-and-ahrs-algorithms/

!KiCAD microbit-edie-conector
https://github.com/anthonykirby/kicad_microbit_connector

http://wiki.banana-pi.org/BPI-Bit

! GPIO sensers
,GPIO control of BPI:bit,GPIO,ADC
,Light Sensor(L)	,GPIO 36,ADC1_CH0	,Analog Input_A0
,Light Sensor(R)	,GPIO 39,ADC1_CH3	,Analog Input_A3
,Botton A	,GPIO 35,	,Digital Input
,Botton B	,GPIO 27,	,Digital Input
,Temperature Sensor	,GPIO 34,ADC1_CH6	,Analog Input_Analog A6
,Buzzer	,GPIO 25,	,PWM(Digital Output) / Analog Output
,RGB_LED	,GPIO 4,	,Digital Output
,MPU9250_SCL	,GPIO 22,	,Digital Output
,MPU9250_SDA	,GPIO 21,	,Digital Output
,MPU9250_INT	,GPIO 16,	,Digital Input
,R_LED(SPI_SCK)	,GPIO 18,	,Digital Output

! HardWare PIN define of BPI:bit
,Pin Name	,Analog Function1	,Analog Function2	,Function1	,Function2	,Power
,P3	,ADC2_CH4	,	,GPIO13	,	
,P0	,ADC2_CH8	,DAC_1	,GPIO25	,	
,P4	,ADC2_CH3	,	,GPIO16	,	
,P5	,ADC1_CH7	,	,GPIO35	,,ボタンA	
,P6	,ADC2_CH5	,	,GPIO12	,	
,P7	,ADC2_CH6	,	,GPIO14	,	
,P1	,ADC1_CH4	,	,GPIO32	,	
,P8	,		,,GPIO16	,	,
,P9	,		,,GPIO17	,	,
,P10	,ADC2_CH9	,DAC_2	,GPIO26	,	
,P11	,ADC2_CH7	,	,GPIO27	,,ボタンB	
,P12	,ADC2_CH2	,	,GPIO02	,	
,P2	,ADC1_CH5	,	,GPIO33	,	
,P13	,		,,GPIO18	,SPI_SS	,
,P14	,		,,GPIO19	,SPI_SCK	,
,P15	,		,,GPIO23	,SPI_MISO	,
,P16	,		,,GPIO05	,SPI_MOSI	,
,3V3	,		,,	,	,POWER:3V3
,3V3	,		,,	,	,POWER:3V3
,3V3	,		,,	,	,POWER:3V3
,P19	,		,,GPIO22	,I2C_SCL	,
,P20	,		,,GPIO21	,I2C_SDA	,
,GND	,		,,	,	,GROUND
,GND	,		,,	,	,GROUND
,GND	,		,,	,	,GROUND