About Alex R

Alex R · 2024-07-01

Hi,I'm developing a new application for the STM32U5A5 processor. The application runs correctly if I program (flash) and debug with the JTAG/SWD debugger. Even after disconnecting the debugger, the application still runs, and it is possible to re-pro...

Alex R · 2018-03-22

Posted on March 22, 2018 at 21:56Hi, We are evaluating the use of the BT Module SPBT3.0DP1 on one of our devices.We are trying to configure the PIN to connect to a legacy device, that already has a predetermined PIN code that uses letters (lower and...

Alex R · 2024-07-02

Hi,After further analysis, it was determined that the application was indeed running, but was being blocked by a trace library (Percepio's Tracealyzer) when the debugger was not connected/enabled, or after power cycle. Disabling the trace library all...

Alex R · 2019-07-04

Additional questions:Is Vpp valid during programming? Could it be that when using the timers, other external peripherals are enable and Vpp is not valid.Is the programming sequence followed? Note that Flash read will stall during Flash operations Are...

Alex R · 2019-07-04

Use a GPIO pin to mark the beginning and the end of the callback function. This way you can measure how long that routine takes, and the relation of the execution of the callback routine with respect to the SPI transactions. Most likely your SPI tran...

Alex R · 2019-06-06

From this post:https://community.st.com/s/question/0D50X0000AurKVsSQM/declaring-variables-in-sram13-areas-of-h7-devices-in-stm32cubeideSTM32CubeIDE uses gcc, so you should read the relevant gcc docs: __attribute__ ((section("my_ram")) will place the ...

Alex R · 2019-06-06

You need to check your linker to determine the method used to place data at an specific address.An alternative would be to use a pointer to the SDRAM, and not define statically the big buffer.You might need to keep track of the buffer size to prevent...

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