119 lines
4.2 KiB
Python
Executable File
119 lines
4.2 KiB
Python
Executable File
# Copyright (c) 2018 Acroname Inc. - All Rights Reserved
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#
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# This file is part of the BrainStem development package.
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# See file LICENSE or go to https://acroname.com/software/brainstem-development-kit for full license details.
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import sys
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import brainstem
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#for easy access to error constants
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from brainstem.result import Result
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from brainstem.link import Spec
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import time
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# Create USBHub3c object and connecting to the first module found
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print('\nCreating USBHub3c stem and connecting to first module found')
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chub = brainstem.stem.USBHub3c()
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# Connect to a USBHub3c with Serial Number 0x341F6970 through
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# serial port '/dev/tty.usbserial-1110' at 115200 baudrate.
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# Port can be substituted with 'COM3' as an example as well
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#
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# Note: The USBHub3c must be configured to accept serial control.
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# With the Hub connected to USB, open HubTool, select System, and
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# under the Serial selection, check "Enabled", and Protocol "BrainStem".
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# Select the baud rate of your choosing and update the baudrate field here.
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spec = Spec(
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transport=Spec.SERIAL,
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serial_number=0x341F6970,
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module=6,
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model=brainstem.defs.MODEL_USBHUB_3C,
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baudrate=115200,
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port='/dev/tty.usbserial-1110')
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result = chub.connectFromSpec(spec)
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#Verify we are connected
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if result == (Result.NO_ERROR):
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result = chub.system.getSerialNumber()
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print("Connected to USBHub3c with serial number: 0x%08X" % result.value)
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else:
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#If we are not connected there is nothing we can do.
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print ('Could not find a module.\n')
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sys.exit(1)
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result = chub.hub.getUpstream();
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upstreamPort = brainstem.stem.USBHub3c.NUMBER_OF_USB_PORTS
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if result.error == Result.NO_ERROR:
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upstreamPort = result.value
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print("")
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print("The current upstream port is: %d" % upstreamPort)
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if result.error == Result.NO_ERROR:
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print("")
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print("Disabling all downstream ports")
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for port in range(0, brainstem.stem.USBHub3c.NUMBER_OF_USB_PORTS):
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if port == upstreamPort:
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print("Skipping upstream port.")
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elif port == brainstem.stem.USBHub3c.PORT_ID_CONTROL_INDEX:
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print("The control port is always enabled.")
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elif port == brainstem.stem.USBHub3c.PORT_ID_POWER_C_INDEX:
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print("The Power-C port is always enabled")
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else:
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err = chub.hub.port[port].setEnabled(False)
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print("Disabling port %d, Error: %d" % (port, err))
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time.sleep(.4) #Delay so the user can see it.
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if result.error == Result.NO_ERROR:
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print("")
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print("Enabling all downstream ports")
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for port in range(0, brainstem.stem.USBHub3c.NUMBER_OF_USB_PORTS):
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if port == upstreamPort:
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print("Skipping upstream port.")
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elif port == brainstem.stem.USBHub3c.PORT_ID_CONTROL_INDEX:
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print("The Control port is always enabled.")
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elif port == brainstem.stem.USBHub3c.PORT_ID_POWER_C_INDEX:
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print("The Power-C port is always enabled")
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else:
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err = chub.hub.port[port].setEnabled(True)
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print("Enabling port %d, Error: %d" % (port, err))
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time.sleep(.4) #Delay so the user can see it.
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print("")
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print("Getting VBus and VConn Voltage and Current")
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print("Note: When in PD Mode voltage is only present after successful ")
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print(" negotiation with a device.")
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for port in range(0, brainstem.stem.USBHub3c.NUMBER_OF_USB_PORTS):
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vBusVoltageResult = chub.hub.port[port].getVbusVoltage()
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vBusCurrentResult = chub.hub.port[port].getVbusCurrent()
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print("")
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print("Vbus Voltage: %.2f, Error: %d" %
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(vBusVoltageResult.value/1000000, vBusVoltageResult.error))
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print("Vbus Current: %.2f, Error: %d" %
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(vBusCurrentResult.value/1000000, vBusCurrentResult.error))
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if port == brainstem.stem.USBHub3c.PORT_ID_POWER_C_INDEX:
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print("The Power-C port does not have VConn measurements")
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else :
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vConnCurrentResult = chub.hub.port[port].getVconnCurrent()
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vConnVoltageResult = chub.hub.port[port].getVconnVoltage()
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print("Vconn Current: %.2f, Error: %d" %
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(vConnCurrentResult.value/1000000, vConnCurrentResult.error))
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print("Vconn Voltage: %.2f, Error: %d" %
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(vConnVoltageResult.value/1000000, vConnVoltageResult.error))
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#Disconnect from device.
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chub.disconnect()
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