Why is my GPIO not working in crontab?
I think that under cron your PATH does not contain directory in which your gpio command is located. You can add line like this as first line of your crontab: and this should fix your issue, if gpio is located in one of directories listed above. Typical way to debug crontab issues is to make sure that env. variables are what you expect them to be.
What is cron table on Raspberry Pi used for?
Crontab is used for configuring scheduled tasks on Raspberry Pi. In short, cron is the name of the tool, crontab is the cron table listing the jobs that cron will be executing while these socalled jobs are cronjobs. How to edit crontab on Raspberry Pi Run crontab (cron table) with the -e flag to edit the cron table:
What are the fields in crontab on Raspberry Pi?
Format Meanings and Allowed Value: MIN Minute field 0 to 59 HOUR Hour field 0 to 23 DOM Day of Month 1-31 MON Month field 1-12 DOW Day Of Week 0-6 CMD Command Any command to be executed. sudo crontab -e @reboot /path/to/job @reboot /path/to/myscript.sh @reboot /path/to/command argX argY
Where is the GPIO Command located in Cron?
Most important env. variable for you is PATH. I think that under cron your PATH does not contain directory in which your gpio command is located. You can add line like this as first line of your crontab: and this should fix your issue, if gpio is located in one of directories listed above.
What is the direction of a GPIO signal?
The GPIO direction register (DIR) specifies the direction of each GPIO signal. Logic 0 indica tes the GPIO pin is configured as output, and logic 1 indicates input. When configured as output, writing a 1 to a bit in the set data register drives the corresponding GPn to a logic-high state.
How to run pilot GPIO on a Raspberry Pi?
I’ve got a Raspberry Pi. I’ve installed on it WiringPi for pilot GPIO on the board via command line. I’ve done a script called aggiornaora.sh This script work fine if I try to exec it directly via sh aggiornaora.sh . But when cron run the script, it do only the second action. All with root permission.