How to send HEX data to SPI?

[swanduron]

Hello experts,

I want to calculate (bool) and send the data to the SPI bus, but I note that the SPI only accepts certain data types bytes, or bytearray.

For example, I have below code slice:

CMD1 = const(64)
shiftAddress = CMD1 | offset
# spi.write(shiftAddress). << I want to do this but it doesn't work

Do anyone has the experience to convert HEX to bytes/bytearray in micropython?

Regards

[robert-hh]

You can do in on-the-fly be writing;

spi.write(bytearray([shiftAddress]))

or you can create a single element bytearray and store the value into it:

temp = bytearray(1)
temp[0} = shiftAddress
spi.write(temp)

[swanduron]

Thanks a LOT!!!!!!!!!!!!!
I just use a very clumsy method as below. Your ways look much better than I found.

temp = 0x12
spi.write(temp.to_bytes(1, 'big'))

Regards!