def main():
parser = argparse.ArgumentParser(
description=
'HAL component to read ADC values and convert to temperature')
parser.add_argument('-n',
'--name',
help='HAL component name',
required=True)
parser.add_argument('-i',
'--interval',
help='Adc update interval',
default=0.05)
parser.add_argument(
'-c',
'--channels',
help=
'Komma separated list of channels and thermistors to use e.g. 01:semitec_103GT_2,02:epcos_B57560G1104',
required=True)
parser.add_argument('-f',
'--filter_size',
help='Size of the low pass filter to use',
default=10)
parser.add_argument('-b',
'--cape_board',
help='Type of cape used',
default='BeBoPr')
parser.add_argument(
'-r',
'--r_pu',
default=2000,
type=float,
help='Divider pull-up resistor value (default 2k Ohms)')
args = parser.parse_args()
updateInterval = float(args.interval)
filterSize = int(args.filter_size)
error = False
watchdog = True
# Create pins
pins = []
if (args.channels != ""):
channelsRaw = args.channels.split(',')
for channel in channelsRaw:
pinRaw = channel.split(':')
if (len(pinRaw) != 2):
print(("wrong input"))
sys.exit(1)
pin = Pin()
pin.pin = int(pinRaw[0])
if ((pin.pin > 5) or (pin.pin < 0)):
print(("Pin not available"))
sys.exit(1)
checkAdcInput(pin)
if (pinRaw[1] != "none"):
pin.r2temp = R2Temp(pinRaw[1])
pin.filterSize = filterSize
pins.append(pin)
# Initialize HAL
h = hal.component(args.name)
for pin in pins:
pin.halRawPin = h.newpin(
getHalName(pin) + ".raw", hal.HAL_FLOAT, hal.HAL_OUT)
if (pin.r2temp is not None):
pin.halValuePin = h.newpin(
getHalName(pin) + ".value", hal.HAL_FLOAT, hal.HAL_OUT)
halErrorPin = h.newpin("error", hal.HAL_BIT, hal.HAL_OUT)
halNoErrorPin = h.newpin("no-error", hal.HAL_BIT, hal.HAL_OUT)
halWatchdogPin = h.newpin("watchdog", hal.HAL_BIT, hal.HAL_OUT)
h.ready()
halErrorPin.value = error
halNoErrorPin.value = not error
halWatchdogPin.value = watchdog
try:
while (True):
try:
for pin in pins:
f = open(pin.filename, 'r')
value = float(f.readline())
pin.addSample(value)
pin.halRawPin.value = pin.rawValue
if (pin.r2temp is not None):
pin.halValuePin.value = adc2Temp(pin)
error = False
except IOError:
error = True
halErrorPin.value = error
halNoErrorPin.value = not error
watchdog = not watchdog
halWatchdogPin.value = watchdog
time.sleep(updateInterval)
except:
print(("exiting HAL component " + args.name))
h.exit()
pins = []
if (args.channels != ""):
channelsRaw = args.channels.split(',')
for channel in channelsRaw:
pinRaw = channel.split(':')
if (len(pinRaw) != 2):
print(("wrong input"))
sys.exit(1)
pin = Pin()
pin.pin = int(pinRaw[0])
if ((pin.pin > 7) or (pin.pin < 0)):
print(("Pin not available"))
sys.exit(1)
if (pinRaw[1] != "none"):
pin.r2temp = R2Temp(pinRaw[1])
pin.filterSize = filterSize
pins.append(pin)
# Initialize HAL
h = hal.component(args.name)
for pin in pins:
pin.halRawPin = h.newpin(getHalName(pin) + ".raw", hal.HAL_FLOAT, hal.HAL_OUT)
if (pin.r2temp is not None):
pin.halInputPin = h.newpin(getHalName(pin) + ".input", hal.HAL_U32, hal.HAL_IN)
pin.halValuePin = h.newpin(getHalName(pin) + ".value", hal.HAL_FLOAT, hal.HAL_OUT)
if (args.ref == 'y'):
halRefPin = h.newpin("voltage-ref", hal.HAL_U32, hal.HAL_IN)
halErrorPin = h.newpin("error", hal.HAL_BIT, hal.HAL_OUT)
halNoErrorPin = h.newpin("no-error", hal.HAL_BIT, hal.HAL_OUT)
halWatchdogPin = h.newpin("watchdog", hal.HAL_BIT, hal.HAL_OUT)
def main():
parser = argparse.ArgumentParser(
description='HAL component to read Temperature values over I2C')
parser.add_argument('-n',
'--name',
help='HAL component name',
required=True)
parser.add_argument('-b', '--bus_id', help='I2C bus id', default=2)
parser.add_argument('-a',
'--address',
help='I2C device address',
default=0x20)
parser.add_argument('-i',
'--interval',
help='I2C update interval',
default=0.05)
parser.add_argument(
'-c',
'--channels',
help=
'Comma separated list of channels and thermistors to use e.g. 01:semitec_103GT_2,02:epcos_B57560G1104',
required=True)
parser.add_argument('-f',
'--filter_size',
help='Size of the low pass filter to use',
default=10)
parser.add_argument('-d',
'--delay',
help='Delay before the i2c should be updated',
default=0.0)
args = parser.parse_args()
updateInterval = float(args.interval)
delayInterval = float(args.delay)
filterSize = int(args.filter_size)
error = True
watchdog = True
adc = ADS7828(busId=int(args.bus_id), address=int(args.address))
# Create pins
pins = []
if (args.channels != ""):
channelsRaw = args.channels.split(',')
for channel in channelsRaw:
pinRaw = channel.split(':')
if (len(pinRaw) != 2):
print(("wrong input"))
sys.exit(1)
pin = Pin()
pin.pin = int(pinRaw[0])
if ((pin.pin > 7) or (pin.pin < 0)):
print(("Pin not available"))
sys.exit(1)
if (pinRaw[1] != "none"):
pin.r2temp = R2Temp(pinRaw[1])
pin.filterSize = filterSize
pins.append(pin)
# Initialize HAL
h = hal.component(args.name)
for pin in pins:
pin.halRawPin = h.newpin(
getHalName(pin) + ".raw", hal.HAL_FLOAT, hal.HAL_OUT)
if (pin.r2temp is not None):
pin.halValuePin = h.newpin(
getHalName(pin) + ".value", hal.HAL_FLOAT, hal.HAL_OUT)
halErrorPin = h.newpin("error", hal.HAL_BIT, hal.HAL_OUT)
halNoErrorPin = h.newpin("no-error", hal.HAL_BIT, hal.HAL_OUT)
halWatchdogPin = h.newpin("watchdog", hal.HAL_BIT, hal.HAL_OUT)
h.ready()
halErrorPin.value = error
halNoErrorPin.value = not error
halWatchdogPin.value = watchdog
try:
time.sleep(delayInterval)
while (True):
try:
for pin in pins:
value = float(adc.readChannel(pin.pin))
pin.addSample(value)
pin.halRawPin.value = pin.rawValue
if (pin.r2temp is not None):
pin.halValuePin.value = adc2Temp(pin)
error = False
except IOError as e:
error = True
halErrorPin.value = error
halNoErrorPin.value = not error
watchdog = not watchdog
halWatchdogPin.value = watchdog
time.sleep(updateInterval)
except:
print(("exiting HAL component " + args.name))
h.exit()