`pca9557` – I2C I/O expander device driver¶

Driver for PCA9557 I2C I/O Expander

class CB3.pca9557.PCA9557(i2c, address)[source]¶

I2C I/O Expander Driver

output(val)[source]¶: Cached write to output port

read(reg)[source]¶: Read 8-bit register

setbits(mask, do_set)[source]¶: Bitmask write to ouput port

write(reg, val)[source]¶: Write 8-bit register