import RPi.GPIO as G
import time
import spidev
spi = spidev.SpiDev()
spi.open(0, 0) # bus, device
spi.max_speed_hz = 50000
spi.mode = 0

W = 0xF0
R = 0x0F

def Reset():
  print('Reset:', end=" ")
  spi.writebytes([W, 0x00, 0x00, 0x80])
  for i in range(10):
    x = spi.xfer([R, 0x00, 0x00, 0])
    print('%02x' % x[3], end=" ")
  print()
  time.sleep(1)

def Setem(addr, vec):
  # for e in reversed(vec):
  for e in vec:
    spi.writebytes([W, 0, addr, e])
    addr += 1

def SetGateway(*vec): Setem(0x001, vec)
def SetMask(*vec): Setem(0x005, vec)
def SetMAC(*vec): Setem(0x009, vec)
def SetIP(*vec): Setem(0x00F, vec)
def SetTMSR(x): Setem(0x01B, [x])
def SetRMSR(x): Setem(0x01A, [x])

def Dump():
  for i in range(0x1C):
    x = spi.xfer([R, 0x00, i, 0])
    gap = i in [0, 4, 8, 14, 18, 0x19]
    print('%02x ' % x[3], end=" " if gap else "")
  print()

while True:
  Reset()
  Dump()
  SetTMSR(0x55)
  SetRMSR(0x55)
  SetGateway(1, 1, 1, 1)
  SetMask(255, 0, 0, 0)
  SetMAC(61, 62, 63, 64, 65, 66)
  SetIP(10, 1, 2, 3)
  Dump()