class i2c - IIC BusΒΆ

Usage

from robot_hat import I2C

i2c = I2C(1)                         # create on bus 1
i2c = I2C(1, I2C.MASTER)             # create and init as a master

i2c.send('abc')      # send 3 bytes
i2c.send(0x42)       # send a single byte, given by the number
data = i2c.recv(3)   # receive 3 bytes

i2c.is_ready(0x42)           # check if slave 0x42 is ready
i2c.scan()                   # scan for slaves on the bus, returning a list of valid addresses
i2c.mem_read(3, 0x42, 2)     # read 3 bytes from memory of slave 0x42, starting at address 2 in the slave
i2c.mem_write('abc', 0x42, 2, timeout=1000) # write 'abc' (3 bytes) to memory of slave 0x42, starting at address 2 in the slave, timeout after 1 second.

Constructors

class robot_hat.I2C(num): Create an I2C object associated with the given num. This allows you to use i2c on that device.

Methods

  • is_ready - Check if slave 0x42 is ready.

I2C.is_ready(addr)

  • scan - Scan for slaves on the bus, returning.

I2C.scan()

  • send - Send several bytes to slave with address.

I2C.send(send,addr,timeout)

  • recv - Receive one or several bytes.

data = i2c.recv(recv,addr,timeout)   # receive 3 bytes

  • mem_write - Write to the memory of an I2C device.

I2C.mem_write(data, addr, memaddr, timeout)

  • mem_read - Read from the memory of an I2C device.

I2C.mem_read(data, addr, memaddr, timeout)