This repository was archived by the owner on Sep 30, 2019. It is now read-only.
This repository was archived by the owner on Sep 30, 2019. It is now read-only.
MCP Conveniece methods #18
Description
I'd also like to suggest adding the following convenience methods- these allow using the MCP as a byte/word driver in parallel mode and are structured similiar to the Adafruit_I2C class:
def readU8(self):
result = self.i2c.readU8(MCP23017_OLATA)
return(result)
def readS8(self):
result = self.i2c.readU8(MCP23017_OLATA)
if (result > 127): result -= 256
return result
def readU16(self):
assert self.num_gpios >= 16, "16bits required"
lo = self.i2c.readU8(MCP23017_OLATA)
hi = self.i2c.readU8(MCP23017_OLATB)
return((hi << 8) | lo)
def readS16(self):
assert self.num_gpios >= 16, "16bits required"
lo = self.i2c.readU8(MCP23017_OLATA)
hi = self.i2c.readU8(MCP23017_OLATB)
if (hi > 127): hi -= 256
return((hi << 8) | lo)
def write8(self, value):
self.i2c.write8(MCP23017_OLATA, value)
def write16(self, value):
assert self.num_gpios >= 16, "16bits required"
self.i2c.write8(MCP23017_OLATA, value & 0xFF)
self.i2c.write8(MCP23017_OLATB, (value >> 8) & 0xFF)