AM62A3-Q1: MCU access Main domain GPIO

Hi Expert

Here is my configuration and code

I execute a timer callback function every 130ms, pulling the corresponding pin up for 3ms and then down. However, when measuring with an oscilloscope, I did not detect any waveform and the waveform remained at a low level.

BR,

Huang

Dear customer,

      Could you please use the below script to dump the register by MCU_R5F after the application runs?

     /cfs-file/__key/communityserver-discussions-components-files/791/AM62A_5F00_gpio.gel

Regards,

Linjun

Dear customer,

   After you configured the GPIO0_77, please add the code to .mcu_plus_sdk_am62ax_xx/examples/drivers/boot/sbl_*/sbl_*/am62ax-sk/r5fss0-0_nortos/ti-arm-clang/generated/ti_pinmux_config.c  variable "gPinMuxMainDomainCfg" accordingly. Thanks.

Linjun

Hi Linjun

Yes, after configuring CCS, the compilation will generate the corresponding code in ti_pinmux_config. c. I just conducted an experiment using other pins for testing, and the configuration of other pins will also take effect. The only difference is that I can control the pins of the MCU Domain normally, but the pins of the MAIN Domain, such as Y16 (GPIO0_77), cannot be activated when I perform pull-up and pull-down operations on them

BR,

Huang

Dear Mr. Huang,

   As to the GPIO PADCONFIG register can only be write by DM-R5F core, the application you are using is on MCU domain R5F, it can't modify the PADCONFIG register as expected. Please configure all the GPIOs in sbl code function  Pinmux_init. Thanks. 

Regards,

Linjun