TMS320F280049C: Alternate SCI boot with C2Prog failed.

Gear Feng

Prodigy 30 points

Part Number: TMS320F280049C

I tried to use alternate SCI boot pin in the emulation boot mode.

I use Free C2Prog as the tool to load fw with SCI.

It is fine with the standard SCI boot pin (GPIO28, 29)

But always fail with the alternate SCI boot pin (GPIO16, 17 nor GPIO8, 9)

Here is my code to set the BOOT_PIN_CONFIG and BOOT_DEF

HWREG(EMU_BOOTPIN_CONFIG) = (BOOTPIN_CONFIG_KEY  << 24) + //(EMU_STANDALONE_KEYVAL << 24) +
                                   (BOOTPIN_CONFIG_BMSPDISABLE << 16) +
                                   (BOOTPIN_CONFIG_BMSPDISABLE << 8) +
                                   (0X0E);
HWREG(EMU_BOOTDEF_LOW) = (FLASH_BOOT << 8) + 0x41;

The C2Prog shows failed (no response)! during the Connecting with target.