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retro16 / acsi2stm

Atari ST ACSI to SD card converter with a STM32
GNU General Public License v3.0
159 stars 38 forks source link

High current draw #5

Closed TzOk83 closed 3 years ago

TzOk83 commented 3 years ago

I've encountered a problem - after shorting unused CS pins to GND the MCU overheats. I've checked, and PA1..4 and PB0..1 seem to be configured as output and set high, so shorting them to GND results in excessive current draw (50mA per pin).

retro16 commented 3 years ago

Thanks for the feedback. I reviewed my code and your result is a bit strange. Based on my code, these pins should stay in the INPUT_PULLUP state. In the meantime, you can remove the pins you don't use from the sdCs array in the code and leave them open.

retro16 commented 3 years ago

Hi, If you still have issues, I recommend that you upgrade to the 2.0 beta I just uploaded. Beware that there are minor pinout differences. Now, unused CS pins are not grounded anymore, which should solve your issue.