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TMS320F28386S: Register assignments

John Hite
Expert 1355 points

Part Number: TMS320F28386S
Other Parts Discussed in Thread: C2000WARE

My project is in C under CCS.

Is there a file where registers like BOOTPIN_CONFIG, BOOT_DEF_LOW, and BOOT_DEF_HIGH are usually assigned?

Thanks,

John

  • 0
    TI__Guru 50611 points

    John,

    If you are looking for some code where it uses that, then please take a look at Boot ROM code.

    C:/ti/c2000/C2000Ware_4_02_00_00/libraries/boot_rom/f2838x/revA/rom_sources/cpu1/F2838x_ROM/bootROM/source/cpu1brom_select_bootmode.c

    Thanks & Regards,

    Santosh

  • 0 in reply to Santosh Jha
    Expert 1355 points

    Hi Santosh,

    You have been a big help to me but perhaps my question was poorly formed. I need to change some of these values and thus I wanted to know where they are usually initialized.

  • 0 in reply to John Hite
    TI__Guru 50611 points

    Hi John,

    This register is in OTP. So you do not want to write this in your code. Usually, it is done in production environment. Please refer to Technical Reference Manual, section 5.4.3 for detailed sequence. I referred you to ROM code, so that you can see how ROM is using it to boot.

    Thanks & Regards,

    Santosh

  • 0 in reply to Santosh Jha
    Expert 1355 points

    Santosh,

    I have configured my board per TI document SPRACN1.

    In the file 2838x_flash_lnk_cpu1.cmd I have inserted the following at the beginning.

    // Per SPRACN1
MEMORY
{
PAGE 0:
DCSM_ZSEL_Z1_P0: origin = 0x07800C, length = 0x000002
DCSM_ZSEL_Z1_P1: origin = 0x07801C, length = 0x000002
}
SECTIONS
{
dcsm_zsel_z1_1 : > DCSM_ZSEL_Z1_P0, PAGE = 0
dcsm_zsel_z1_2 : > DCSM_ZSEL_Z1_P1, PAGE = 0
}
//End SPRACN1

    In source file I have this at the top:

    // Per SPRACN1
#pragma RETAIN(otp_z1_data)
#pragma DATA_SECTION(otp_z1_data,"dcsm_zsel_z1_1");
const long otp_z1_data = 0x5AFFFF39; // GPIO567
#pragma RETAIN(otp_z1_data_2)
#pragma DATA_SECTION(otp_z1_data_2,"dcsm_zsel_z1_2");
const long otp_z1_data_2 = 0xFFFF0103;
// End SPRACN1

    And later in the code:

      GPIO_setPadConfig(57U, GPIO_PIN_TYPE_STD);
  GPIO_setDirectionMode(57U, GPIO_DIR_MODE_OUT);

    It seems to work. Does it look correct?

    Thanks,

    John

  • +1 in reply to John Hite
    TI__Guru 50611 points

    John,

    Looks good to me. 

    Regards, Santosh