hi guys,
i did the porting on cortexM4 (128K sram, 4MByte psram, 4M xip norflash, i cache, d cache, 52MHz) based on RK27.
i can play .wav file on sdcard well.
but what strange is:
when i add some log, program crash.
when i delete some log, program crash.
when i add a line code , program crash.
......
i change toolchain to arm-none-eabi-gcc.!
any ideas?