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replacing STM32F103C6 with STM32F103CBT6

Moha-Affa
Associate II

hi,

i am new to embedded programming and i have a problem and i appreciate any help.

I have a firmware which works on stm32f103c6 .

We had to replace the controller with an other to get more space for the flash Rom and that was the stm32f103cbt6,they are the same familiy and have the same datasheet and everything is the same .

when i try to flash it (using Jtrace Pro) i get first a messaeg that active write protected stm32 device detected and asks me if i want to perform an unlock . I click yes and i get error "could not stop cortex-M device please check the jtag cable. everything was ok with the old STM we just replaced it with new one ,nothing has changed !!

Thanx alot for any help

the Build Output :

JLink info:

------------

DLL: V6.32h, compiled Jul 5 2018 18:11:19

Firmware: J-Trace PRO V1 Cortex-M compiled Apr 20 2018 16:47:45

Hardware: V1.00

S/N : 751000130 

Feature(s) : RDI, FlashBP, FlashDL, JFlash, GDB 

* JLink Info: Found SW-DP with ID 0x1BA01477

* JLink Info: Device will be unsecured now.

* JLink Info: Found SW-DP with ID 0x1BA01477

* JLink Info: Scanning AP map to find all available APs

* JLink Info: AP[1]: Stopped AP scan as end of AP map has been reached

* JLink Info: AP[0]: AHB-AP (IDR: 0x14770011)

* JLink Info: Iterating through AP map to find AHB-AP to use

* JLink Info: AP[0]: Core found

* JLink Info: AP[0]: AHB-AP ROM base: 0xE00FF000

* JLink Info: CPUID register: 0x411FC231. Implementer code: 0x41 (ARM)

* JLink Info: Found Cortex-M3 r1p1, Little endian.

* JLink Info: FPUnit: 6 code (BP) slots and 2 literal slots

* JLink Info: CoreSight components:

* JLink Info: ROMTbl[0] @ E00FF000

* JLink Info: ROMTbl[0][0]: E000E000, CID: B105E00D, PID: 001BB000 SCS

* JLink Info: ROMTbl[0][1]: E0001000, CID: B105E00D, PID: 001BB002 DWT

* JLink Info: ROMTbl[0][2]: E0002000, CID: B105E00D, PID: 000BB003 FPB

* JLink Info: ROMTbl[0][3]: E0000000, CID: B105E00D, PID: 001BB001 ITM

* JLink Info: ROMTbl[0][4]: E0040000, CID: B105900D, PID: 001BB923 TPIU-Lite

ROMTableAddr = 0xE00FF000

* JLink Info: Reset: Halt core after reset via DEMCR.VC_CORERESET.

* JLink Info: Reset: Reset device via AIRCR.SYSRESETREQ.

* JLink Info: Reset: S_RESET_ST never gets cleared. CPU seems to be kept in reset forever.

* JLink Info: Reset: Using fallback: Reset pin.

* JLink Info: Reset: Halt core after reset via DEMCR.VC_CORERESET.

* JLink Info: Reset: Reset device via reset pin

* JLink Info: Reset: VC_CORERESET did not halt CPU. (Debug logic also reset by reset pin?).

* JLink Info: Reset: Reconnecting and manually halting CPU.

* JLink Info: Found SW-DP with ID 0x1BA01477

* JLink Info: AP map detection skipped. Manually configured AP map found.

* JLink Info: AP[0]: AHB-AP (IDR: Not set)

* JLink Info: AP[0]: Core found

* JLink Info: AP[0]: AHB-AP ROM base: 0xE00FF000

* JLink Info: CPUID register: 0x411FC231. Implementer code: 0x41 (ARM)

* JLink Info: Found Cortex-M3 r1p1, Little endian.

**JLink Warning: CPU could not be halted

* JLink Info: Reset: Core did not halt after reset, trying to disable WDT.

* JLink Info: Reset: Halt core after reset via DEMCR.VC_CORERESET.

* JLink Info: Reset: Reset device via reset pin

* JLink Info: Reset: VC_CORERESET did not halt CPU. (Debug logic also reset by reset pin?).

* JLink Info: Reset: Reconnecting and manually halting CPU.

* JLink Info: Found SW-DP with ID 0x1BA01477

* JLink Info: AP map detection skipped. Manually configured AP map found.

* JLink Info: AP[0]: AHB-AP (IDR: Not set)

* JLink Info: AP[0]: Core found

* JLink Info: AP[0]: AHB-AP ROM base: 0xE00FF000

* JLink Info: CPUID register: 0x411FC231. Implementer code: 0x41 (ARM)

* JLink Info: Found Cortex-M3 r1p1, Little endian.

**JLink Warning: CPU could not be halted

* JLink Info: Reset: Failed. Toggling reset pin and trying reset strategy again.

* JLink Info: Found SW-DP with ID 0x1BA01477

* JLink Info: AP map detection skipped. Manually configured AP map found.

* JLink Info: AP[0]: AHB-AP (IDR: Not set)

* JLink Info: AP[0]: Core found

* JLink Info: AP[0]: AHB-AP ROM base: 0xE00FF000

* JLink Info: CPUID register: 0x411FC231. Implementer code: 0x41 (ARM)

* JLink Info: Found Cortex-M3 r1p1, Little endian.

* JLink Info: Reset: Halt core after reset via DEMCR.VC_CORERESET.

* JLink Info: Reset: Reset device via AIRCR.SYSRESETREQ.

* JLink Info: Reset: S_RESET_ST never gets cleared. CPU seems to be kept in reset forever.

* JLink Info: Reset: Using fallback: Reset pin.

* JLink Info: Reset: Halt core after reset via DEMCR.VC_CORERESET.

* JLink Info: Reset: Reset device via reset pin

* JLink Info: Reset: VC_CORERESET did not halt CPU. (Debug logic also reset by reset pin?).

* JLink Info: Reset: Reconnecting and manually halting CPU.

* JLink Info: Found SW-DP with ID 0x1BA01477

* JLink Info: AP map detection skipped. Manually configured AP map found.

* JLink Info: AP[0]: AHB-AP (IDR: Not set)

* JLink Info: AP[0]: Core found

* JLink Info: AP[0]: AHB-AP ROM base: 0xE00FF000

* JLink Info: CPUID register: 0x411FC231. Implementer code: 0x41 (ARM)

* JLink Info: Found Cortex-M3 r1p1, Little endian.

**JLink Warning: CPU could not be halted

* JLink Info: Reset: Core did not halt after reset, trying to disable WDT.

* JLink Info: Reset: Halt core after reset via DEMCR.VC_CORERESET.

* JLink Info: Reset: Reset device via reset pin

* JLink Info: Reset: VC_CORERESET did not halt CPU. (Debug logic also reset by reset pin?).

* JLink Info: Reset: Reconnecting and manually halting CPU.

* JLink Info: Found SW-DP with ID 0x1BA01477

* JLink Info: AP map detection skipped. Manually configured AP map found.

* JLink Info: AP[0]: AHB-AP (IDR: Not set)

* JLink Info: AP[0]: Core found

* JLink Info: AP[0]: AHB-AP ROM base: 0xE00FF000

* JLink Info: CPUID register: 0x411FC231. Implementer code: 0x41 (ARM)

* JLink Info: Found Cortex-M3 r1p1, Little endian.

**JLink Warning: CPU could not be halted

**JLink Warning: CPU could not be halted

Error: Flash Download failed - Target DLL has been cancelled

Flash Load finished at 08:20:20

2 REPLIES 2
Uwe Bonnes
Principal II

Checj the reset line! A lot of messages above talk about problems with reset,

Did you unsolder the old chip and resolder the the one. Than check again every pin.

If you designed a new board, check your design.

Moha-Affa
Associate II

yes i did usolder the old chip and resolder the new one but like i said they are the same family and the have the same datasheet the same pin positions and functions and no i didnt design a new system everything is like it was just the chip replaced .

you are right the chip stays in reset forever but why i could not know .

the NRST Pin is connected to GND through 100 nf according to the datasheet.