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I want to ask in the OMAP-L132's DATASHEET (sprs762.pdf) 's page 35 ,the (PRU0_R30[15] / PRU0_R31[15]) --V18. If this pin can use as

whisky zjj
Intellectual 340 points
Other Parts Discussed in Thread: OMAP-L132

I want to ask in the  OMAP-L132's DATASHEET  (sprs762.pdf) 's  page 35 ,the (PRU0_R30[15] / PRU0_R31[15]) --V18. If this pin can use as an GPIO pin?

Also if the V19 U19 T16 R18 R19 R15 can use as the GPIO?

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    TI__Genius 15910 points

    The PRU GPO and GPI pins could be used as a GPIO pin controlled by the DSP / ARM, since any master (including the DSP and ARM) can access the PRU registers while the PRU core is not running.

    In general, the pinmux mode would be similar to the GPIO DIR register.  Note PRU R30 signals are GPO and PRU R31 signals are GPI.  Writing to the PRU register 30 (0x01C37478) is similar to writing to the GPIO OUT_DATA register.  Reading the PRU register 31 (0x01C3747C) is similar to reading the GPIO IN_DATA register.

    The PRU wiki provides additional details about the R30 GPO and R31 GPI pins of the Programmable Real-time Unit.

    Regards,

    Melissa