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DAC buffering #25

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kimstik opened this issue Mar 24, 2022 · 2 comments

kimstik commented Mar 24, 2022

I found that output is sensitive to R4/R9 values.
In my case with 20k of R4 it drops voltage 30% down.
Seems that DAC output buffer is not enabled.

mzhboy commented Jan 3, 2025 •

edited

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yes, dac buffer is disabled

https://github.com/free-pdk/easy-pdk-programmer-software/blob/cdc40ae65f85c1ed93f304f5008c6b9b6c5c0043/Firmware/source/Src/stm32f0xx_hal_msp.c#L162-L186

https://github.com/free-pdk/easy-pdk-programmer-software/blob/cdc40ae65f85c1ed93f304f5008c6b9b6c5c0043/Firmware/source/Src/main.c#L260-L294

Member

cpldcpu commented Jan 3, 2025

@freepdk Was it a conscious design decision to not enable the DAC buffer?

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