libsi24
2023-01-22 Robin Krenslibsi24: return bytes sent in si24_send
2023-01-22 Robin Krenslibsi24: added receive loop func
2023-01-22 Robin Krenslibsi24: small fixes for recv mode
2023-01-22 Robin Krenslibsi24: correction for ack send mode
2023-01-22 Robin Krenslibsi24: uniform registers + debugging setup
2023-01-22 Robin Krenslibsi24: config and send functionality
2023-01-18 Robin Krenslibsi24: basic setup