Rockpi4/android-mraa

Rock PI 4 Android Mraa API

Class

class	constructor	constructor2		class	constructor	constructor2
Aio	Aio (int pin_index)	NA		Gpio	Gpio(int pin_index)	NA
I2c	I2c (int i2c_index)	NA		Pwm	Pwm (int pin_index)	NA
Spi	Spi (int spi_index)	NA		Uart	Uart(int uart_index)	NA

Index Class

RockPI4I2C	Field	Index Value	Hardware I2c Number	RockPI4SPI	Field	Index Value	Hardware Spi Number
	ROCK_PI_4_I2C2	0	i2c2		ROCK_PI_4_SPI1	0	spi1
	ROCK_PI_4_I2C6	1	i2c6		ROCK_PI_4_SPI2	1	spi2
	ROCK_PI_4_I2C7	2	i2c7

RockPI4Uart	Field	Index Value	Hardware Uart Number
	ROCK_PI_4_UART2	0	uart2
	ROCK_PI_4_UART4	1	uart4

Gpio

Methods	Parameter	Description	Return
dir(Dir dir)	Dir	Set input/output	Result
readDir()	void	Read input/output dir	Dir
mode(Mode mode)	Mode	Set STRONG/PULLUP/PULLDOWN/HIZ	Result
read()	void	Set input and read gpio value	0/1
write(int v)	0/1	Set output value	Result
unexport()	void	Unexport gpio in /dev/class/gpio	Result

Example

   import mraa.*;
   
   Gpio gpio40 = new Gpio(RockPI4.ROCK_PI_4_PIN40.swigValue());
   // output
   gpio40.dir(Dir.DIR_OUT);
   // set value
   gpio40.write(1);
   // release gpio if you want
   gpio40.unexport();

I2C

Methods	Parameter	Description	Return
address(short a)	0x00-0xFF	Set i2c address	Result
readByte()	void	Read a byte data form i2c	short
writeByte(short b)	Mode	Write a byte data to i2c	Result
read(byte[] buf)	byte[]	Read a byte[] data form i2c	read size
write(byte[] buf)	byte[]	Write a byte[] data to i2c	Result
readReg(short a)	0x00-0xFF	Read a byte data form i2c addr	short
writeReg(short a, short d)	0x00-0xFF, 0x00-0xFF	Write a byte data to i2c addr	Result
readWordReg(short a)	0x00-0xFF	Read a byte[2] data form i2c addr	int
writeWordReg(short a, int d)	0x00-0xFF, 0x0000-0xFFFF	Write a byte[2] data to i2c addr	Result
readBytesReg(short a, byte[] b)	0x00-0xFF, byte[]	Read a byte[] data form i2c addr	int