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lpc176x: Convert i2c code to use standard i2ccmds.c

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Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor
2018-11-14 10:23:56 -05:00
parent f973886dac
commit f3c4deb1ab
4 changed files with 38 additions and 13 deletions
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13
klippy/extras/mcp4451.py
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@@ -10,8 +10,9 @@ WiperRegisters = [0x00, 0x01, 0x06, 0x07]
class mcp4451:
def __init__(self, config):
printer = config.get_printer()
# Read config parameters
self.mcu = mcu.get_printer_mcu(printer, config.get('mcu', 'mcu'))
self.i2c_addr = config.getint('i2c_address')
i2c_addr = config.getint('i2c_address')
scale = config.getfloat('scale', 1., above=0.)
wipers = [None]*4
for i in range(len(wipers)):
@@ -19,14 +20,20 @@ class mcp4451:
minval=0., maxval=scale)
if val is not None:
wipers[i] = int(val * 255. / scale + .5)
# Setup i2c
self.oid = self.mcu.create_oid()
self.mcu.add_config_cmd(
"config_i2c oid=%d bus=0 rate=100000 addr=%d" % (
self.oid, i2c_addr))
# Configure registers
self.add_config_cmd(0x04, 0xff)
self.add_config_cmd(0x0a, 0xff)
for reg, val in zip(WiperRegisters, wipers):
if val is not None:
self.add_config_cmd(reg, val)
def add_config_cmd(self, reg, val):
self.mcu.add_config_cmd("i2c_send data=%02x%02x%02x" % (
self.i2c_addr, (reg << 4) | ((val >> 8) & 0x03), val), is_init=True)
self.mcu.add_config_cmd("i2c_write oid=%d data=%02x%02x" % (
self.oid, (reg << 4) | ((val >> 8) & 0x03), val), is_init=True)
def load_config_prefix(config):
return mcp4451(config)