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driver: usbsdmuxdriver: add GPIO get and set support #1891

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driver: usbsdmuxdriver: add GPIO get and set support #1891

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19 changes: 19 additions & 0 deletions labgrid/driver/usbsdmuxdriver.py
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Original file line number Diff line number Diff line change
Expand Up @@ -45,3 +45,22 @@ def get_mode(self):
cmd = self.mux.command_prefix + [self.tool, self.mux.control_path, "get"]
proc = subprocess.run(cmd, stdout=subprocess.PIPE, check=True)
return proc.stdout.strip().decode()

@Driver.check_active
@step(title="sdmux_gpio_get", args=["gpio"])
def get_gpio(self, gpio):

@Emantor Emantor Jun 9, 2026

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Not using the DigitalOutputProtocol here means that we can't make use of the IOs in the client and discoverability is difficult (since the function is named differently)

But the DigitalOutputProtocol requires that the index of the GPIO is set beforehand.

@Bastian-Krause @jluebbe do you have a better idea here?

if gpio not in [0, 1]:
raise ExecutionError(f"GPIO '{gpio}' not supported by USBSDMuxDriver")
cmd = self.mux.command_prefix + [self.tool, self.mux.control_path, "gpio", str(gpio), "get"]
proc = subprocess.run(cmd, stdout=subprocess.PIPE, check=True)
return proc.stdout.strip().decode()

@Driver.check_active
@step(title="sdmux_gpio_set", args=["gpio", "value"])
def set_gpio(self, gpio, value):
if gpio not in [0, 1]:
raise ExecutionError(f"GPIO '{gpio}' not supported by USBSDMuxDriver")
if value.lower() not in ["high", "1", "low", "0"]:
raise ExecutionError(f"GPIO value '{value}' not supported by USBSDMuxDriver")
cmd = self.mux.command_prefix + [self.tool, self.mux.control_path, "gpio", str(gpio), value.lower()]
processwrapper.check_output(cmd)