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simtrace: Enable VCC detection via ADC (voltage dependent)

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SIMtrace should reject any card activation at 1.8V as it is a 3[.3]V device
without level shifters.  For this, we must include the ADC in
determining the VCC voltage.

Change-Id: Ic76f06037590ff1c0dae818d5eb2c2019dd75f2d
FIXME: reporting uses raw ADC voltage, not the voltage before divider
This commit is contained in:
Harald Welte
2022-01-26 11:02:47 +01:00
parent 755387ee31
commit 09c279874e
1 changed files with 4 additions and 0 deletions
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4
firmware/libboard/simtrace/include/board.h
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@@ -155,3 +155,7 @@
#endif
/* SIMtrace board supports man-in-the-middle mode */
//#define HAVE_MITM
#define DETECT_VCC_BY_ADC
#define VCC_UV_THRESH_1V8 (1500000/2) /* 10k/10k resistive divider halves voltage */
#define VCC_UV_THRESH_3V (2500000/2) /* 10k/10k resistive divider halves voltage */