Can't enter BSL mode when use msp430f5438a , seek for bsl bootlooder code.

Hi,

I have worked with MSP430F5438A and the bootloader supplied by Texas Instruments, an *.exe if I am not wrong, and I can tell you that it works.

First of all, you need a circuitry, available on TI documentation to adapt the voltage levels, or even with a transceiver and the required signals could be sufficient (in my case I did the last option).

Second, when you get it, check the timing and voltage level of BSL signals on oscilloscope, it could have to be similar to the diagrams on documentation. This one is an important step, ensure the correct signals.

Third, the software supplied by TI it is not perfect, sometimes give me back errors that in the next attempt does not appear, and we changed nothing.

You can insert some hardware between the PC and your F5438A to help meeting the <15usec requirement.

http://www.ti.com/litv/pdf/slaa535a offers such a solution.

I have already do somethings as you suggestion ,  use "BSL_Scripter.exe" which supplied by TI in slau319e , to do the BSL updata ,  but the "BSL_Scripter.exe" return the error that

Initializing, Mode: 5xx COM: COM2       DONE
Mass Erase:                             DONE
RX Password:                            DONE
Writing Big_File.txt to device: FAIL writing data block starting at 5c00

Where can I get this hardware ?

Can anyone provide a definite answer ?Thanks

It seems that you have a problem with the power supply.
Doing a flash write operation takes a quite large current. If this suddenly increasing current causes your VCC to drop, even by a few mV, teh flash controller will flag an error and the writing is reported to have failed.

Well, there are other possible reasons, but considering that the software works for others and the basic communication seems to work too, this is the most likely reason. Followed by a shakey serial connection.