LAUNCHXL-F280049C: eabi格式下gpio无法使用|can't use gpio when the output format is set to eabi

您好，我在使用LAUNCHXL-F280049C开发板时遇到了一个问题：

我将修改了FLASH存放位置的led_ex1_blinky例程的输出格式切换为eabi格式，然后修改了f28004x_usdelay.asm

在这以后，我的开发板led灯不亮了，gpio电平一直为高电平。

我很确信，在coff格式下开发板led灯是正常闪动的。

请问这个是什么情况？

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Hi,I have a problem when using my LAUNCHXL-F280049C eva. board:I tried to running the led_ex1_blinky demo code in flash and in eabi style .so I changed f28004x_usdelay.asm and rebuild it.

When I tried to running my program. I was surprised that the LED didn't work. The GPIO always high.

I'm sure that it work when using coff format.

so WTF happened?

ps:sorry to my broken english:(