def __init__(self, port):
if (port>1):
sys.stderr.write("Error! PowerModule can be only on ports 0 or 1")
else :
self.spi = SPILib(0) # init SPI on port 0 (pins : 2,3,4)
if (port==0):
self.latchPin = 5
else :
self.latchPin = 13
self.output = 0
# Pin mapping
self.mapping = [8, 9, 10, 11, 12, 13, 14, 15, 0, 1, 2, 3, 4, 5, 6, 7]
class PowerModule:
def __init__(self, port):
if (port>1):
sys.stderr.write("Error! PowerModule can be only on ports 0 or 1")
else :
self.spi = SPILib(0) # init SPI on port 0 (pins : 2,3,4)
if (port==0):
self.latchPin = 5
else :
self.latchPin = 13
self.output = 0
# Pin mapping
self.mapping = [8, 9, 10, 11, 12, 13, 14, 15, 0, 1, 2, 3, 4, 5, 6, 7]
def digitalWrite(self, pin, value):
# Due to the hardware mapping, some swapping must be done
if value == 0:
self.output &= ~(1 << self.mapping[pin])
else:
self.output |= (1 << self.mapping[pin])
self.fire()
def portWrite(self, value): # 16 bit value here please
byteA = value & 0xFF
byteB = value >> 8
result = (byteA << 8) | byteB
self.output = result
self.fire()
def fire(self):
first = self.output & 0xFF
second = (self.output>>8) & 0xFF
digitalWrite(self.latchPin, LOW)
self.spi.write_byte_data(first, second)
digitalWrite(self.latchPin, HIGH)
