AM2434: Is it possible to access PRU register directly from R5F ?

Hello Hideaki-san,

We support a communication protocol between R5F cores and PRU cores called PRU IPC. Please find more information about it here:
https://software-dl.ti.com/mcu-plus-sdk/esd/AM243X/10_00_00_20/exports/docs/api_guide_am243x/DRIVERS_PRU_IPC.html 

In addition, the R5F can directly read from the PRU's Data RAM (DRAM), or Shared RAM (SRAM) by reading from the addresses in the "PRU_ICSSG Global Memory Map" in the Technical Reference Manual (TRM).

However, other processor cores are NOT able to directly read the PRU's internal registers R0-R31. You can use CCS to peek into the PRU internal registers during software development.

For getting started thoughts on using CCS for debug, feel free to refer to the PRU Getting Started Labs (currently targeted for CCS <--> PRU and Linux <--> PRU): https://software-dl.ti.com/processor-sdk-linux/esd/AM64X/10_00_07_04/exports/docs/common/PRU-ICSS/PRU-Getting-Started-Labs_Lab5.html

For getting started labs specific to AM243x, refer to the RTOS getting started guide: https://git.ti.com/cgit/pru-software-support-package/pru-software-support-package/tree/examples/am243x

Regards,

Nick