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TMS320F28388D: When boot downloads CPU2, can initialization fails (CANA succeeds, CANB fails)

Ti‘s customer
Intellectual 400 points
Part Number: TMS320F28388D

Hi All

  Tms320f28388d chip, three core bootloader development, when downloading CPU2 core, it will be stuck in can_ Initram in the while loop in this function. After restarting the MCU, it will still be stuck here.

  Do not know why? CANA succeeds, CANB fails

  CANA and CANB Config Pin： 

#define DEVICE_GPIO_CFG_CANRXA GPIO_30_CANRXA // "pinConfig" for CANA RX 
#define DEVICE_GPIO_CFG_CANTXA GPIO_31_CANTXA // "pinConfig" for CANA TX 
#define DEVICE_GPIO_CFG_CANRXB GPIO_10_CANRXB // "pinConfig" for CANB RX
#define DEVICE_GPIO_CFG_CANTXB GPIO_12_CANTXB // "pinConfig" for CANB TX

  Please know, let me know. Thank you

Best Regards