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Need help use SIM5215 GPIO intread of camera port

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jaruwit

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I use simcom SIM5215E module. It not support keypad. I want to use camera port to be a gpio for scan keypad with lua.
I set port to gpio with AT+CCGSWT=0 for gpio mode. But I can't set value with AT+CGSETV command.
In manual, It can set only gpio 0,2,3,5.

AT+ccgswt=?
+CCGSWT: (0-1)
OK

AT+ccgswt?
+CCGSWT: 0
OK

AT+cgsetv=6,1
ERROR
 

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