darrylb123
commented
3 years ago Why don't you use the python library rather than running commands? Follow the docs on how to build the latest libraries.
Darryl
On Tue, 31 Aug 2021, 3:57 pm Matthias Loeser, @.***> wrote:
Hi,
Following the relevant snippet of my Python code:
try: proc = subprocess.run(set_cmd, capture_output=True, universal_newlines=True, check=True, shell=False, timeout=1, encoding='UTF-8') except subprocess.CalledProcessError as e: print(f"ERROR ({fname}): stderr={e.stderr}, stdout={e.stdout}")
set_cmd is basically an array like the following: ['/usr/bin/usbrelay', 'GPIOS_1=1', 'GPIOS_2=0', 'GPIOS_3=1', 'GPIOS_4=0']
Quite often I see a failure while looping over all permutations of any of my relays:
CMD: /usr/bin/usbrelay WAKES_1=1 WAKES_2=0 WAKES_3=1 WAKES_4=1 CMD: /usr/bin/usbrelay WAKES_1=1 WAKES_2=1 WAKES_3=0 WAKES_4=0 CMD: /usr/bin/usbrelay WAKES_1=1 WAKES_2=1 WAKES_3=0 WAKES_4=1 ERROR (read_dct_relays): stderr=free(): invalid next size (fast) , stdout= CMD: /usr/bin/usbrelay WAKES_1=1 WAKES_2=1 WAKES_3=1 WAKES_4=0 CMD: /usr/bin/usbrelay WAKES_1=1 WAKES_2=1 WAKES_3=1 WAKES_4=1
Where does this failure "free(): invalid next size (fast)" come from? System is running Ubuntu LTS 16.04 on an x86 PC.
Debug output:
$ /usr/bin/usbrelay --debug Version: 0.7-50-g8f6b7fd1ea Library Version: 0.7-50-g8f6b7fd1ea enumerate_relay_boards()Found 3 devices Device Found type: 16c0 05df path: /dev/hidraw4 serial_number: GPIOS Manufacturer: www.dcttech.com Product: USBRelay4 Release: 100 Interface: 0 Number of Relays = 4 Module_type = 1 GPIOS_1=0 GPIOS_2=0 GPIOS_3=0 GPIOS_4=0 Device Found type: 16c0 05df path: /dev/hidraw5 serial_number: WAKES Manufacturer: www.dcttech.com Product: USBRelay4 Release: 100 Interface: 0 Number of Relays = 4 Module_type = 1 WAKES_1=0 WAKES_2=0 WAKES_3=0 WAKES_4=0 Device Found type: 16c0 05df path: /dev/hidraw3 serial_number: ERTSW Manufacturer: www.dcttech.com Product: USBRelay4 Release: 100 Interface: 0 Number of Relays = 4 Module_type = 1 ERTSW_1=0 ERTSW_2=0 ERTSW_3=0 ERTSW_4=0
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wentasah
mloeser21
Hi,
Following the relevant snippet of my Python code:
try: proc = subprocess.run(set_cmd, capture_output=True, universal_newlines=True, check=True, shell=False, timeout=1, encoding='UTF-8') except subprocess.CalledProcessError as e: print(f"ERROR ({fname}): stderr={e.stderr}, stdout={e.stdout}")
(sorry - I couldn't find a way to keep the indentation alive)
set_cmd is basically an array like the following: ['/usr/bin/usbrelay', 'GPIOS_1=1', 'GPIOS_2=0', 'GPIOS_3=1', 'GPIOS_4=0']
Quite often I see a failure while looping over all permutations of any of my relays:
CMD: /usr/bin/usbrelay WAKES_1=1 WAKES_2=0 WAKES_3=1 WAKES_4=1 CMD: /usr/bin/usbrelay WAKES_1=1 WAKES_2=1 WAKES_3=0 WAKES_4=0 CMD: /usr/bin/usbrelay WAKES_1=1 WAKES_2=1 WAKES_3=0 WAKES_4=1 ERROR (read_dct_relays): stderr=free(): invalid next size (fast) , stdout= CMD: /usr/bin/usbrelay WAKES_1=1 WAKES_2=1 WAKES_3=1 WAKES_4=0 CMD: /usr/bin/usbrelay WAKES_1=1 WAKES_2=1 WAKES_3=1 WAKES_4=1
Where does this failure "free(): invalid next size (fast)" come from? System is running Ubuntu LTS 16.04 on an x86 PC.
Debug output:
$ /usr/bin/usbrelay --debug Version: 0.7-50-g8f6b7fd1ea Library Version: 0.7-50-g8f6b7fd1ea enumerate_relay_boards()Found 3 devices Device Found type: 16c0 05df path: /dev/hidraw4 serial_number: GPIOS Manufacturer: www.dcttech.com Product: USBRelay4 Release: 100 Interface: 0 Number of Relays = 4 Module_type = 1 GPIOS_1=0 GPIOS_2=0 GPIOS_3=0 GPIOS_4=0 Device Found type: 16c0 05df path: /dev/hidraw5 serial_number: WAKES Manufacturer: www.dcttech.com Product: USBRelay4 Release: 100 Interface: 0 Number of Relays = 4 Module_type = 1 WAKES_1=0 WAKES_2=0 WAKES_3=0 WAKES_4=0 Device Found type: 16c0 05df path: /dev/hidraw3 serial_number: ERTSW Manufacturer: www.dcttech.com Product: USBRelay4 Release: 100 Interface: 0 Number of Relays = 4 Module_type = 1 ERTSW_1=0 ERTSW_2=0 ERTSW_3=0 ERTSW_4=0