Bootstrap Loader replies with 0x00 when sending 0x80 (sync byte)

Ben Malchow1

Other Parts Discussed in Thread: MSP430F5438A

Hi,

We are trying to use the bootstrap loader on a MSP430F5438A. When we send the sync byte (0x80) we receive a response, but the response is 0x00 instead of 0x90.

Do you have any insight as to why this might be?

over 12 years ago

0 Leo Hendrawan over 12 years ago

TI__Guru 56650 points

Ben,

I know this is somehow confusing for people who start working with BSL, however data ACK 0x90 is only to be expected when you are working with BSL on MSP430x1xx, 2xx, and 4xx devices.

For 5xx BSL, the data ack 0x00 is fine. Please refer to the chapter 3 of SLAU319.

0 Ben Malchow1 over 12 years ago in reply to Leo Hendrawan

Intellectual 630 points

Do you still have to send sync commands (0x80). I noticed they aren't mentioned in this section.

0 Ben Malchow1 over 12 years ago in reply to Ben Malchow1

Intellectual 630 points

Furthermore, are the same functions password protected as with the other family of devices? Do you still need to do a Mass Erase to clear the password and then do an Rx Password with 32 bytes of 0xFF to unlock functions such as Rx Data Block?

0 old_cow_yellow over 12 years ago in reply to Ben Malchow1

Guru 58965 points

No. They are totally different. Read the document Leo pointed out.

0 Ben Malchow1 over 12 years ago in reply to old_cow_yellow

Intellectual 630 points

Leo, old_cow_yellow,

Thank you for the help. The BSL is now operational with my C# application.

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Bootstrap Loader replies with 0x00 when sending 0x80 (sync byte)