Tips-BPI-BIT
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 |