External Loader: ST-Link Utility and STM32CubeProgrammer issues
Hi,
I’m developing and external loader for ST-Link Utility and STM32CubeProgrammer.
My constrains/ requirements are:
- STM32F091RBTx as uC
- external lash on SPI: EN25Q40
- SDK/IDE Atollic
I used (started from) the source code from STM32CubeProgrammer and the document UM0892.
After a lot of attempts I have a version/FW that run on STM32CubeProgrammer, and I’m able to erase, write and read the external flash.
The issues are:
1) Sometimes connecting, disconnecting and reconnecting the STM32CubeProgrammer to the ST-Link/v2 I receive this error::
“Error: flash loader C:\Program Files (x86)\STMicroelectronics\STM32Cube\STM32CubeProgrammer\bin/ExternalLoader/EN25Q40_MT447 cannot be loaded.�?
This if and only if a I erase or write the external flash before disconnecting and reconnecting, If a only read the external flash the error doesn’t arise (I can disconnecting and reconnecting without problems) . If I don’t disconnect the ST-Link/v2 all work fine i.e. I’m able to write, erase and read many times the external flash.
2) The same binary module (.stldr) that I use on STM32CubeProgrammer if used with ST-Link Utility doesn’t work, in detail, the ST-Link Utility load the model without error, I can erase the external flash (mass erase, sector erase) and also I can read the external flash (the read is more slowly than STM32CubeProgrammer ) but the write operation fails, and example log is:
11:27:27 : Erasing external memory success.
11:29:07 : Timeout during flash programming
11:2 9:07 : Error occured during program operation!
11:29:29 : Unable to run On-Chip verification!
11:29:38 : External memory program canceled
Someone can help me to understand these issues or suggest me a way to debug the FW/module?
Thanks.
Gianluca Costa