def init():
global initialised
mode1 = i2cRead(0x40, PCA_INC_NONE | 0, 'B')
if mode1 != 0:
print '## dimmer ## Initialising (MODE1 was 0x{0:02X})'.format(mode1)
settings = json.loads(jsettings)
i2cWrite(0x40, PCA_INC_ALL | 0, settings, 'I')
initialised = True
def i2cset(addr, reg, val, mode):
iaddr = int(addr, 0)
ireg = int(reg, 0)
ival = int(val, 0)
try:
pytronics.i2cWrite(iaddr, ireg, ival, mode)
print '## i2cset ##'
return str(0)
except (OSError, IOError) as e:
import errno
print '## i2cset ## Error: [{0}] {1}'.format(errno.errorcode[e.errno], e.strerror)
return str(-1)
except Exception as e:
return 'Internal server error', 500
def i2cset(addr, reg, val, mode):
iaddr = int(addr, 0)
ireg = int(reg, 0)
ival = int(val, 0)
try:
pytronics.i2cWrite(iaddr, ireg, ival, mode)
print '## i2cset ##'
return str(0)
except (OSError, IOError) as e:
import errno
print '## i2cset ## Error: [{0}] {1}'.format(errno.errorcode[e.errno],
e.strerror)
return str(-1)
except Exception as e:
return 'Internal server error', 500
def dimmer():
try:
if not initialised:
init()
if 'command' in request.form:
command = request.form['command']
if command == 'read_status':
return json.dumps(i2cRead(0x40, PCA_INC_ALL | 0, 'I', 28))
elif command == 'set_brightness':
ireg = int(request.form['register'], 0)
ival = int(request.form['value'], 0)
i2cWrite(0x40, ireg, ival, 'B')
return 'OK', 200
except Exception as e:
print '## dimmer ## Unexpected error {0}'.format(e)
return 'Bad request', 400
def i2c_write():
import json
try:
params = json.loads(request.form['params'])
print '## i2c_write ## ' + str(params)
pytronics.i2cWrite(params['addr'], params['reg'], params['value'], params['size'])
result = {
'success': True
}
return json.dumps(result)
except (OSError, IOError) as e:
import errno
print '## i2c_write ## Error: [{0}] {1}'.format(errno.errorcode[e.errno], e.strerror)
result = {
'success': False,
'errorCode': errno.errorcode[e.errno],
'errorMessage': e.strerror
}
return json.dumps(result)
except Exception as e:
return 'Internal server error', 500
def i2c_write():
import json
try:
params = json.loads(request.form['params'])
print '## i2c_write ## ' + str(params)
pytronics.i2cWrite(params['addr'], params['reg'], params['value'],
params['size'])
result = {'success': True}
return json.dumps(result)
except (OSError, IOError) as e:
import errno
print '## i2c_write ## Error: [{0}] {1}'.format(
errno.errorcode[e.errno], e.strerror)
result = {
'success': False,
'errorCode': errno.errorcode[e.errno],
'errorMessage': e.strerror
}
return json.dumps(result)
except Exception as e:
return 'Internal server error', 500
def set_rtc ():
from pytronics import i2cWrite
import subprocess, time
cmd = 'ntpdate uk.pool.ntp.org'
subp = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE)
try:
data = subp.communicate()[0].strip()
t = time.gmtime()
rtc = []
rtc.append(BCD(t.tm_sec))
rtc.append(BCD(t.tm_min))
rtc.append(BCD(t.tm_hour))
rtc.append(BCD(t.tm_wday + 1))
rtc.append(BCD(t.tm_mday))
rtc.append(BCD(t.tm_mon))
rtc.append(BCD(t.tm_year - 2000))
i2cWrite(0x68, 0, rtc, 'I')
# Reset OSF (oscillator stopped flag)
i2cWrite(0x68, 0x09, 0, 'B')
subp = subprocess.Popen([ 'date'], stdout=subprocess.PIPE)
print '## set_rtc ## ' + subp.communicate()[0].strip()
except Exception, e:
print '## set_rtc ## Unexpected error: %s' % str(e)
def rtc():
from pytronics import i2cRead, i2cWrite
import json
if 'command' in request.form:
command = request.form['command']
if command == 'set_rtc':
set_rtc()
elif command == 'set_rascal':
set_rascal()
elif command == 'start':
i2cWrite(0x68, 0, i2cRead(0x68, 0) & 0x7f)
elif command == 'stop':
i2cWrite(0x68, 0, i2cRead(0x68, 0) | 0x80)
elif command == 'reset':
i2cWrite(0x68, 0, [0x80, 0, 0], 'I')
return json.dumps(i2cRead(0x68, 0, 'I', 7))