Open srolf opened 3 weeks ago
As mentioned in the code, I used the CAN bus timing calculator and inserted before the 10Mhz definition the following:
# 12MHz Crystal oscillator (used on the WaveShare RS485 CAN HAT)
12000000: {
# CNF1, CNF2, CNF3
1000000: (0x00, 0x88, 0x01),
500000: (0x00, 0x9A, 0x03),
250000: (0x00, 0xBF, 0x06),
200000: (0x02, 0x92, 0x02),
125000: (0x01, 0xBF, 0x06),
100000: (0x02, 0xB5, 0x05),
},
and was able to receive frames with correct data on a RPi5 with a CAN-USB dongle (USB ID 1d50:606f) at 500K and 1M.
Please add in init.py support for a crystal oscillator running at 12Mhz.
I would like to use on a WaveShare RP2040-PiZero with a WaveShare RS485 CAN HAT for Raspberry Pi which uses a 12Mhz oscillator. This HAT exists in two variants, one with 8Mhz and one with 12Mhz.