AM263P4: AM263Px: Configuring watchdog timer clock source to RCCCLK10M asserts in MCU+ SDK

Nicolas J.

Part Number: AM263P4
Other Parts Discussed in Thread: AM2634, SYSCONFIG

Hi team,

The AM263Px MCU+ SDK cannot handle RCCCLK10M as the clock source for watchdog timers, even though I'm able to configure it in SysConfig. This works on AM2634. I created a minimal reproducer by modifying the watchdog reset example and attached it here.

watchdog_reset_mode_am263px-cc_r5fss0-0_nortos_ti-arm-clang.zip

Running this example leads to the following error:

Cortex_R5_0: ASSERT: 0.20238s: soc/am263px/soc_rcm.c:SOC_rcmGetPeripheralClockFrequency:1775: FALSE failed !!!

The root cause is in the SOC_rcmGetPeripheralClockFrequency function (source/drivers/soc/am263px/soc_rcm.c) that is missing a case for RCM_PLLID_RCCLK10M, which is pesent in the AM2634 version.

This issue persists in the newest MCU+ SDK 11.01.00.19 version.

5 months ago

+1 Fleenor 5 months ago

TI__Mastermind 34673 points

Hi Nicholas,

Thank you for bringing this to our attention.

However, I did find this defined in the PeripheralClkSrcInfoMap:

mcu_plus_sdk_am263px/source/drivers/soc/am263px/soc_rcm.c at next · TexasInstruments/mcu_plus_sdk_am263px · GitHub

with an associated definition in the gRtiClkSrcValMap:

mcu_plus_sdk_am263px/source/drivers/soc/am263px/soc_rcm.c at next · TexasInstruments/mcu_plus_sdk_am263px · GitHub

but the option is then missed in the swtich (clkSrcInfo->pllId) statement:

mcu_plus_sdk_am263px/source/drivers/soc/am263px/soc_rcm.c at next · TexasInstruments/mcu_plus_sdk_am263px · GitHub

And as you mentioned, this case RCM_PLLID_RCCLK10M option exists for the AM263x equivalent:

mcu_plus_sdk_am263x/source/drivers/soc/am263x/soc_rcm.c at next · TexasInstruments/mcu_plus_sdk_am263x · GitHub

I will file a bug to have this resolved. In the meantime, you can add the case statement code below to the AM263Px soc_rcm.c file as a workaround.

        case RCM_PLLID_RCCLK10M:
        {
            Finp = gXTALInfo[clkFreqId].Finp;
            clkFreq = (Finp * 1000 * 1000 * 10) / 25;
            break;
        }

Best Regards,

Zackary Fleenor

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AM263P4: AM263Px: Configuring watchdog timer clock source to RCCCLK10M asserts in MCU+ SDK