GRC block to control PCA9555

[pavel-demin]

Hi Pavel,

I just remember that I have a module with one PCA9555 + 2 ULN2803A ready to work, tested with red pitaya and hpsdr protocol, for me and you (as you already worked with this I2C chip), do you think is more easy to create a grc block then the FT232H USB board ?

Jacinto

Originally posted by @jacintomfr in #721