About Stratosphere

Stratosphere · 2024-10-02

Using STM32G0 with zephyr on a board that has motion sensor, flow sensor, Quectel BG770 modem and Quectel FC41D modem. Modem power is controlled by the switch which is being turned off for sleep and various other peripherals are also being disabled b...

Stratosphere · 2024-09-10

Problem: ADC reading a battery voltage jump by twice as much when the battery voltage goes from just under 3.55V to anything above (jump is about 1000 in raw adc reading at 12 bits).Background:We have a custom board with STM32G0B1CB on which we are t...

Stratosphere · 2024-10-03

Btw,I can share the schematic privately if you let me know how.Regards

Stratosphere · 2024-09-13

sorry,the define in Zephyr is "ADC_REF_INTERNAL". running calculations as per VREF+ voltage (tied externally to VDD) or 3.5v worked! Thank you for all the support and help. The votlage readings make sense now but still fluctuate by 100 mV.Also found ...

Stratosphere · 2024-09-11

great, thank you for the help!I will test today. btw, just to confirm, what would the VREF_INTERNAL voltage be in this case since VREF+ is tied to VDD ?

Stratosphere · 2024-09-10

Thank you JW.I went through the datasheet as well as the ADC link you posted and indeed need to change the resistor divider value.will a 40K: 40K divider be ok or there is a lower recommended divider suggested? trying to prevent leakage current throu...

Stratosphere · 2024-09-10

please also verify what will be the Vref voltage in that case because Zephyr STM32 ADC only allows ADC_REF_INTERNAL, what is the that voltage actually since I need to know that to properly convert the adc raw readings into voltage.

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STM32G0B1CB with Zephyr sleep power consumption not going below 950uA

STM32G0 ADC issue on Zephyr

Re: STM32G0B1CB with Zephyr sleep power consumption not going below 950uA

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Re: STM32G0 ADC issue on Zephyr

Re: STM32G0 ADC issue on Zephyr

Re: STM32G0 ADC issue on Zephyr