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Implement power-cycling via custom shell command

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Sometimes instead of DTR line some custom way (e.g SoC gpio line)
may be used to reset the device. This commit implements
automated power-cycling using a a custom shell command that can
be specified via -r option

Signed-off-by: Andrew Andrianov <andrew@ncrmnt.org>
This commit is contained in:
Andrew Andrianov
2017-10-07 22:41:26 +03:00
parent f1bafb1e0d
commit ba4faf9c43
2 changed files with 16 additions and 12 deletions
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24
stcgal/protocols.py
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@ -241,7 +241,7 @@ class StcBaseProtocol:
def set_option(self, name, value):
self.options.set_option(name, value)
def connect(self, autoreset=False):
def connect(self, autoreset=False, resetcmd=False):
"""Connect to MCU and initialize communication.
Set up serial port, send sync sequence and get part info.
@ -260,14 +260,18 @@ class StcBaseProtocol:
self.ser.flushInput()
if autoreset:
print("Cycling power: ", end="")
sys.stdout.flush()
self.ser.setDTR(True)
time.sleep(0.5)
self.ser.setDTR(False)
print("done")
print("Waiting for MCU: ", end="")
sys.stdout.flush()
if not resetcmd:
print("Cycling power: ", end="")
sys.stdout.flush()
self.ser.setDTR(True)
time.sleep(0.5)
self.ser.setDTR(False)
print("done")
print("Waiting for MCU: ", end="")
sys.stdout.flush()
else:
print("Cycling power via shell cmd: " + resetcmd)
os.system(resetcmd)
else:
print("Waiting for MCU, please cycle power: ", end="")
sys.stdout.flush()
@ -1504,7 +1508,7 @@ class StcUsb15Protocol(Stc15Protocol):
host2dev = usb.util.CTRL_TYPE_VENDOR | usb.util.CTRL_RECIPIENT_DEVICE | usb.util.CTRL_OUT
self.dev.ctrl_transfer(host2dev, request, value, index, chunks)
def connect(self, autoreset=False):
def connect(self, autoreset=False, resetcmd=False):
"""Connect to USB device and read info packet"""
# USB support is optional. Provide an error if pyusb is not available.