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MCU-PLUS-SDK-AM263X: AM263X

Ralph Gnauck
Prodigy 10 points

Part Number: MCU-PLUS-SDK-AM263X

Can you please provide details of the supported assembly instructions available on the PRU-ICSS in the AM263X devices.

The only assembly instruction user guide I can find is spruij2 April 2018.

However the instructions mentioned are generating errors when assembling the .asm files using these instructions.

...

Building file: "../main.asm"
Invoking: PRU Compiler
"C:/ti/ccs1120/ccs/tools/compiler/ti-cgt-pru_2.3.3/bin/clpru" -v4 --include_path="C:/ti/ccs1120/ccs/tools/compiler/ti-cgt-pru_2.3.3/include" --include_path="C:/ti/mcu_plus_sdk_am263x_09_00_00_35/source" --include_path="C:/ti/mcu_plus_sdk_am263x_09_00_00_35/source/pru_io/firmware/common" --include_path="C:/Dev/SDR/ti_ccs_ws/application__ICSSM_PRU_0" --define=PRU0 --define=SLICE0 --define=SOC_AM263X --define=_DEBUG=1 -g --diag_warning=225 --diag_wrap=off --display_error_number --endian=little --preproc_with_compile --preproc_dependency="main.d_raw" --include_path="C:/Dev/SDR/ti_ccs_ws/application__ICSSM_PRU_0/Debug/syscfg" "../main.asm"
2 Assembly Errors, No Assembly Warnings

>> Compilation failure
subdir_rules.mk:9: recipe for target 'main.obj' failed
"../main.asm", ERROR! at line 51: [E0003] Invalid instruction
L1: qbbs L1, R31.t31

"../main.asm", ERROR! at line 53: [E0003] Invalid instruction
    WBC R31.t30


Errors in Source - Assembler Aborted
gmake: *** [main.obj] Error 1
gmake: Target 'all' not remade because of errors.

...

I am unable to get information on which instructions are supported and which are not on this MCU.
Also I cannot find any documentation on the assembly errors being generated.


Thank you for any help.

Ralph G.

  • 0
    TI__Mastermind 28504 points

    Hi

    Ralph Gnauck said:
    L1: qbbs L1, R31.t31

    Can you modify your code to have the label and instruction in separate lines and check again?
    L1:
    qbbs L1, R32.t31

    Regards
    Dhaval


  • 0 in reply to Dhaval Khandla
    Prodigy 10 points

    Unfortunately this made no difference, here is the listing showing the error on both forms of the  instruction.

    PRU Assembler PC v2.3.3 Wed Nov 29 10:53:10 2023

Tools Copyright (c) 2012-2018 Texas Instruments Incorporated
../main.asm                                                          PAGE    1

       1
       2;************************************************************************************
       3;   File:     main.asm
       4;************************************************************************************
       5
       6; CCS/makefile specific settings
       7    .retain     ; Required for building .out with assembly file
       8    .retainrefs ; Required for building .out with assembly file
       9
      10    .global     main
      11 00000000                     .sect       ".text"
      12
      13;************************************* includes *************************************
      14; icss_constant_defines.inc: Defines symbols corresponding to Constant Table Entries
      15    .include "icss_constant_defines.inc"
      16;    .include "defines.inc"
      17
      18;************************************************************************************
      19
      20;************************************************************************************
      21
      22
      23;********
      24;* MAIN *
      25;********
      26
      27 00000000                 main:
      28
      29 00000000                 init:
      30;----------------------------------------------------------------------------
      31;   Clear the register space
      32;   Before begining with the application, make sure all the registers are set
      33;   to 0. PRU has 32 - 4 byte registers: R0 to R31, with R30 and R31 being special
      34;   registers for output and input respectively.
      35;----------------------------------------------------------------------------
      36
      37; Give the starting address and number of bytes to clear.
      38 00000000 0000002EFFBB80      zero &r0, 120
      39
      40;----------------------------------------------------------------------------
      41
      42
      43 00000004                 loop_process:
      44
      45 00000004 00000011C07F00      and     r0.b0, r31.b3,  0xC0
      46
      47 00000008 000000570000FF      qbeq        loop_process,r0.b0,0
      48
      49; Do something here
      50 0000000c 00000010000000      nop
      51
      52l1: qbbs  l1, R31.t31
 "../main.asm", ERROR!   at line 52: [E0003] Invalid instruction
      53
      54 00000010                 l2:
PRU Assembler PC v2.3.3 Wed Nov 29 10:53:10 2023

Tools Copyright (c) 2012-2018 Texas Instruments Incorporated
../main.asm                                                          PAGE    2

      55    qbbs  l2, R31.t31
 "../main.asm", ERROR!   at line 55: [E0003] Invalid instruction
      56
      57
      58 00000010 0000007F0000FD      qba loop_process
      59

2 Assembly Errors, No Assembly Warnings

  • 0 in reply to Ralph Gnauck
    TI__Mastermind 28504 points

    Hi

    Can you please try using the other format for this instruction? So you can modify the instruction like following:

    qbbs L1, R31.t31

    to 

    qbbs L1, R31, 31

    Regards
    Dhaval