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Wake up the clock before loading rtc_ds1307 module #1020

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Wake up the clock before loading rtc_ds1307 module #1020

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2c94700
Wake up the clock before loading rtc_ds1307 module
komacke Oct 15, 2023
d296c39
Set RTC to system time if it was reset to 0
komacke Oct 20, 2023
68f4b4b
Clean up pid file and a couple of helpful messages
komacke Nov 5, 2023
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24 changes: 21 additions & 3 deletions Software/Source/src/pijuice_sys.py
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Original file line number Diff line number Diff line change
Expand Up @@ -39,8 +39,8 @@
noPowCnt = 0 # 0 will trigger at boot without power, 3 will not trigger at boot without power
PowCnt = 3 # 0 will trigger at boot with power, 3 will not trigger at boot with power
dopoll = True
PID_FILE = '/tmp/pijuice_sys.pid'
HALT_FILE = '/tmp/pijuice_halt.flag'
PID_FILE = '/run/pijuice/pijuice_sys.pid'
HALT_FILE = '/run/pijuice/pijuice_halt.flag'
I2C_ADDRESS_DEFAULT = 0x14
I2C_BUS_DEFAULT = 1

Expand Down Expand Up @@ -284,6 +284,7 @@ def _LoadConfiguration():
bus = configData['board']['general']['i2c_bus']
pijuice = PiJuice(bus, addr)
except:
print("Failed to connect to PiJuice with: {}".format(configPath))
sys.exit(0)

try:
Expand Down Expand Up @@ -352,6 +353,7 @@ def main():
pijuice.power.SetPowerOff(powerOffDelay)
except ValueError:
pass
os.remove(PID_FILE)
sys.exit(0)

# First check if rtc is operational when the rtc_ds1307 module is loaded.
Expand Down Expand Up @@ -381,14 +383,30 @@ def main():
if ret != 0:
print('Remove rtc_ds1307 module failed', flush=True)
else:
print('Wake up RTC hardware', flush=True)
timeout, pause = 100, 0.1
while pijuice.rtcAlarm.GetTime()['error'] != 'NO_ERROR' and timeout > 0:
time.sleep(pause)
timeout -= pause
if timeout <= 0:
print('RTC hardware not responding, trying to load rtc_ds1307 anyway', flush=True)
else:
if pijuice.rtcAlarm.GetTime()['data']['year'] == 2000:
print('RTC clock was reset to 0. Possible battery loss.')
print('Setting RTC to current system time')
pijuice.rtcAlarm.SetTime(None)

ret = os.system('sudo modprobe rtc_ds1307')
if (ret != 0):
print('Reload rtc_ds1307 module failed', flush=True)
else:
time.sleep(1) # give udev time to create the device
if os.path.exists('/dev/rtc'):
print('rtc_ds1307 mdule reloaded and RTC os-support OK', flush=True)
print('rtc_ds1307 module reloaded and RTC os-support OK', flush=True)
else:
print('RTC os-support not available', flush=True)
else:
print('RTC os-support not available', flush=True)

if watchdogEn: _ConfigureWatchdog('ACTIVATE')

Expand Down