The red light of the OPENSDA is always on, when I inserted USB, as if the reset pin has been pulled down. The motherboard is normal before this fault occurs. The reason for this fault is that a program is downloaded to s32k144 and it is found that the program does not run normally. I tried to update the bootload of opensad, and the firmware was also updated. The fault is still the same. I don't know how to solve it.
Hi tpcom,
Does your computer recognize the board as BOOTLOADER or S32K144EVB drive? If S32K144EVB drive:
The D2 LED GREEN(SDA_LED) is light means the OpenSDA is ok.
The D3 GREEN(PWR_LED) is light means the VDD is ok.
SDA_RST_LED
If the D1 RED(SDA_RST_LED) continuously ON, then your S32K144 may continuously reset. It may caused by no correct program flashed into S32K144.
If click Debug in S32DS after check Emergency Kinetis Device Recovery by Full Chip Erase still not able to connect MCU, then I am afraid you need to use the P&E Recovery Utility.
Please try to use P&E Recovery Utility halt MCU by refer to Recovering Cortex-M Microcontroller with a Power Glitch.
Plug J7 to enable the OpenSDA. External power J16 can be used to power cycling MCU(connect Pin1-2 of J107). If you don't use external power, then Pin2-3 J107 can be used power cycling MCU.
After halt the MCU, you should be able to debug it with S32DS.
Best Regards,
Robin
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The D2 LED GREEN(SDA_LED) is light means the OpenSDA is ok.
The D3 GREEN(PWR_LED) is light means the VDD is ok.
1.This method of "Emergency Kinetis Device Recovery by Full Chip Erase" still not able to connect MCU. The D1 RED(SDA_RST_LED) continuously ON.
2.Plug J7 to enable the OpenSDA. External power J16 can be used to power cycling MCU(connect Pin1-2 of J107). I try power cycling my board, it still not able to connect MCU, the D1 RED(SDA_RST_LED) continuously ON.
3.Plug J7 to enable the OpenSDA. Internal power can be used to power cycling MCU(connect Pin2-3 of J107). I try power cycling my board via plug J7, it still not able to connect MCU, the D1 RED(SDA_RST_LED) continuously ON.
Is there any other way?
Best Regards,
Tpcom
