coflash 구조 및 에러 메시지..

Can NOT Stop MCU!!

Flash driver fuction execution error

도대체.. 머가 문제인거냐...

일단 현재 수상(?) 한건

생산시기에 따른 편차가 있다는것

그리고 2014.7월에 JTAG/SWD 리셋 관련 글이 수정되었다는 점

(물론 예전 버전에도 내용은 존재함)

이래저래 벽에 막힌 기분..

coflash를 이용해서 굽는지라. 초기화 코드등은 수정하려면 할 수는 있으나..

flash 프로그램이 문제인지(elf / *.c / *.h)

xml 설정파일 쪽인지(adapter / debugger / device)

알수가 없네..

현재 의심가는건.. 

1. NVRAM의 설정에서 JTAG으로 설정되거나 SWD로 설정되는 녀석이 혼용되어

JTAG으로 설정된 녀석의 경우 SWD를 통해서 구을수 없다는 경우...

2. 내장 플래시의 문제(혹은 PLL 등?)

+

뒤지다 보니 coflash user defined algorithm이 존재!

[링크 : http://www1.coocox.org/CoFlashGuide/CoFlash_UserGuide_Algorithm.htm]

JTAG-to-SWD Switching

The 16-bit TMS/SWDIO command for switching to SWD mode is defined as b1110.0111.1001.1110, transmitted LSB first.

SWD-to-JTAG Switching

The 16-bit TMS/SWDIO command for switching to JTAG mode is defined as b1110.0111.0011.1100, transmitted LSB first.

 

7.2.3.5 Permanently Disabling Debug

 For extremely sensitive applications, the debug interface to the processor and peripherals can be permanently disabled, blocking all accesses to the device through the JTAG or SWD interfaces. With the debug interface disabled, it is still possible to perform standard IEEE instructions (such as boundary scan operations), but access to the processor and peripherals is blocked. The DBG0 and DBG1 bits of the User Debug (USER_DBG) register control whether the debug interface is turned on or off. The debug interface should not be permanently disabled without providing some mechanism–-such as the boot loader–-to provide customer-installable updates or bug fixes. Disabling the debug interface is permanent and cannot be reversed.

[링크 : http://www.ti.com/lit/ds/symlink/lm3s1607.pdf]