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USB-C power supply which are Power Delivery compliant (USB-PD) are able
to provide different voltage/current (for example 5V/3A 9V/3A 12V/2.25A...)
In this case, the power supply need to negotiate the voltage/current to
use with the device using CC1/CC2 USB-C signals.
If this negotiation occurs during ADC measurement (done also on CC1/CC2
USB-C signals) some ADC acquisition can be corrupted which cause wrong
power supply current detection.
To avoid this, the power supply current detection algorithm is updated
as following:
- perform an ADC measurement, if a 3A current is detected, continue the
boot process.
- else, wait 20ms (max tPDDebounce duration) to ensure that USB-PD
negotiation is done and perform another ADC measurement.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@st.com>
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| .. | ||
| common | ||
| stih410-b2260 | ||
| stm32f429-discovery | ||
| stm32f429-evaluation | ||
| stm32f469-discovery | ||
| stm32f746-disco | ||
| stm32h743-disco | ||
| stm32h743-eval | ||
| stm32mp1 | ||
| stv0991 | ||