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8 years, 8 months ago.
Nucleo STM32 L053R8 : External supply without ST-LINK
I am a student in an internship and I am using a Nucleo L053R8. I want to use that platform with the lowest consumption possible so I would like to remove the ST-LINK part. For that I supply the Nucleo with 5V on the +5V pin and I remove the JP5 and SB12 jumpers. In my project, i communicate with an IRRIDIUM module through a serial port.
The program works fine with the ST-LINK connect (JP5 ON), but when I remove it (JP5 OFF) the program gets stuck at some points when it tries to clear the buffer of the IRRIDIUM.
I need to understand the relation between the ST-LINK and the main processor.
Thank you !