MSP430FR2532: Programming over BSL with UART from PC

Daniel Otto

Prodigy 70 points

Part Number: MSP430FR2532
Other Parts Discussed in Thread: MSP-FET, UNIFLASH

Hi there,

I have the problem, that I don't get to work the programming of the MSP430FR2532 with UART. (No ACK from BSL)

What I want to do:

- reason X call a function while main application on the MCU is running and set the PC Counter @ 0x1000

- erase the memory but not the flash

- send the new application program over UART to the BSL and write it to the memory

- set PC Counter @ 0xE000 to run the new application version

That I have done so far:

- erase all memory (FET-Pro430 set all to 0xFF) so that the BSL will be invoked directly

- power on the MCU

- send from the PC with the program HTerm (9600,8E1) and an FTDI (FT232RL) the following code to the ports 1.4,5 (Tx, Rx) of the MCU:

-> wrong password to erase the device:

[80] [21] [00] [11] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] 
[ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] 
[ff] [ff] [00] [00] [91] [fb]

-> right password:

[80] [21] [00] [11] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] 
[ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] [ff] 
[ff] [ff] [ff] [ff] [9e] [e6]

-> download test application code at 0xE000:

[80] [84] [00] [10] [00] [e0] [00]...

->set PC Counter to 0xE000

[80] [04] [00] [17] [00] [e0] [00] [f8] [de]

What's my problem here:

- don't get an ACK from the BSL

Other Questions beside:

Does the PullUp resistor on RST (P 1.0) for programming the MCU with the MSP-FET interface disturb my plan? Thought not, because I either will skip the hardware BSL invocation by blank detection or use software BSL invocation.

Is it possible to work with the BSL Scripter on Windows?

over 3 years ago

0 Johnson He over 3 years ago

TI__Mastermind 28286 points

Hi Daniel,

In your description, you have completed the download procedure via BSL? The problem you are encountering now is not receiving ACK?

Are you using the program downloaded by BSL Script? Or Uniflash?

Attach some data about BSL maybe useful for you :

Bootloader(BSL): It points to the software upgrade program that is stored into Flash or ROM before the factory. It is mainly used for code programming, erasing and reading in RAM, main memory and information memory. During software upgrade, the occupied I/O pins are the communication interface, RST and TEST pins. For supported communication methods, please refer to Bootloader (BSL) chapter in the related MSP430’s datasheet.

Customized BSL Type:
- Flash-Based BSL (Support MSP430F5x and MSP430F6x): TI provides BSL source code in Bootloader (BSL) memory, but it is limited by storage space and less flexibility.
- Main Memory BSL (Support all MSP430): TI provides example code of Main Memory BSL for customers to develop customized BSL, which is in main memory and more flexibility but requires additional storage space.
Product page: Bootloader (BSL) for MSP low-power microcontrollers
Video:
- MSP Bootloader (BSL) Overview
- MSP Bootloader (BSL) Options
User’s guide:
- MSP430™ Flash Devices Bootloader (BSL) User's Guide
- MSP430 FRAM Devices Bootloader (BSL) User's Guide
Application notes:

Thanks!

Best Regards

Johnson

0 Daniel Otto over 3 years ago in reply to Johnson He

Prodigy 70 points

Hi Johnson,

the download procedure isn't finished. I don't get an ACK from the BSL and there is also no new application code on the MCU after the procedure.

I try to run BSL Scripter for downloading over a FTDI USB to UART converter and with an another Host-PC application sending out the above mentioned BSL protocol.

0 Johnson He over 3 years ago in reply to Daniel Otto

TI__Mastermind 28286 points

Hi Daniel,

Could you show your hardware connect?

You need to connect those six pin if you use MSP-FET to download code via BSL.

Best Regards

Johnson

0 Daniel Otto over 3 years ago in reply to Johnson He

Prodigy 70 points

I don't use the MSP-FET to download code via BSL.

My hardware configuration:

0 Johnson He over 3 years ago in reply to Daniel Otto

TI__Mastermind 28286 points

Hi Daniel,

This FTDI USB to UART converter do not support factory BSL, you need use MSP-FET to download code via BSL, because need use TEST and RST pin to enter BSL mode.

Best Regards

Johnson

0 Daniel Otto over 3 years ago in reply to Johnson He

Prodigy 70 points

Hi Johnson,

but the MCU supports software invocation of the BSL and then it should be possible to program the MCU via UART in the BSL-Modus. Beside the MCU supports blank detection and it should be possible to erase the chip, powering on and then the MCU also should start the BSL and it should be possible to program the chip via UART.

I'm right with this information?

0 Johnson He over 3 years ago in reply to Daniel Otto

TI__Mastermind 28286 points

Hi Daniel,

Yeah, right,

But for factory BSL mode, you need connect TEST and RSTpin in order to enter BSL mode. Thus you need use MSP-FET and connect the follow pin to BSL mode:

Of course, if you customize the BSL, then these two pin(RST and TEST) are not required, depending on the BSL you define.

Best Regards

Johnson

0 Dietmar Walther over 3 years ago in reply to Johnson He

TI__Genius 14165 points

Daniel,

you're right BSL invoke with blank device should normally work and then no TEST and RST pin invoke is required. However in the ERRATA sheet

you can find BSL18 ERRATA which is applicable for RevA (topside marking) and describes that blank device invoke is not supported. So either you switch to RevB or you apply the HW invoke via supported HW or separately if you use a customized interface.

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MSP430FR2532: Programming over BSL with UART from PC