from machine import Pin, SPI
import time

spi = SPI(1, baudrate=1000000, polarity=0, phase=0,
          sck=Pin(18), mosi=Pin(23), miso=Pin(19))
cs = Pin(5, Pin.OUT)
cs.value(1)

def mcp2515_reset():
    cs.value(0)
    spi.write(bytes([0xC0]))  # RESET
    cs.value(1)

def mcp2515_write(reg, value):
    cs.value(0)
    spi.write(bytes([0x02, reg, value]))
    cs.value(1)

def mcp2515_read(reg):
    cs.value(0)
    spi.write(bytes([0x03, reg]))
    val = spi.read(1)
    cs.value(1)
    return val[0]

print("Test MCP2515...")

mcp2515_reset()
time.sleep(0.1)

val = mcp2515_read(0x0E)  # CANSTAT
print("CANSTAT:", hex(val))

while True:
    time.sleep(1)