MSP430F149: Necessary BSL Pins and Examine script

Robert Gauthier

Part Number: MSP430F149
Other Parts Discussed in Thread: MSP-FET

Support Path: /Product/Development and troubleshooting/

Hello! I have an old MSP430F149 with a program on it that I really need to examine to be able to put onto more MSP430's. Unfortunately, the JTAG fuse is blown on the chip so I am hoping that I can successfully examine and save the Firmware from the programmed part through BSL. I am not sure yet what the password is, but I am going to, with someone's help on here, get it ready to connect and examine through BSL. I have an MSP-FET Flash Emulation Tool.

over 8 years ago

0 Clemens Ladisch over 8 years ago

Guru 317480 points

The BSL password is just the last 32 bytes of the flash, i.e., the interrupt vector table. So you will not be able to unlock the BSL without already knowing the contents of the firmware image.

0 Robert Gauthier over 8 years ago in reply to Clemens Ladisch

Prodigy 60 points

I have firmware of what is SUPPOSED to be on the chip. I can use that to create a password. But hardware and software wise, what else would I need. The slau319l.pdf is very hard to understand. It'd be easier to get an experienced person to help guide me through the process.

0 Robert Gauthier over 8 years ago

Prodigy 60 points

Does anyone know the Pins for the F149. BSL usually needs RXD TXD RESET and TEST. But the F149 does not have a TEST pin like other MSP430 chips do. Can Anyone help

0 Clemens Ladisch over 8 years ago in reply to Robert Gauthier

Guru 317480 points

Section 1.3.2 of the BSL User's Guide (SLAU319) says:

Devices with dedicated JTAG pins use the TCK pin instead of the TEST pin. The BSL program execution starts whenever the TCK pin has received a minimum of two negative transitions and TCK is low while RST/NMI rises from low to high …

0 Robert Gauthier over 8 years ago in reply to Clemens Ladisch

Prodigy 60 points

Thank you so much for the response!

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MSP430F149: Necessary BSL Pins and Examine script