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Hi Klaus, thanks for your suggestion, actually fuel gauge was designed and doesn't support battery level reading but charge status and no i2c interface.
Thanks Dana, yes I have seen that it needs timer capture to measure pulse, I have done something below using voltage divider based on i.MX DC...
Thanks Dana and Barry.
Those are really helpful and appreciate that.
Currently my team also wants to explore without ADC and Comparator but just use bunch of resistors and switch FETs (simple circuit and very minimal space) and need to find 25%, 50%, 75% and 100% of battery level (3.7V)
Any help...
Thanks Dana for your reference and really helpful.
Can you also pls suggest available low cost SPI/I2C based ADC or simple Op-amp based ?
My requirement is that would like to measure voltage of Rechargeable Lithium-ion Polymer Battery 3.7V
Thanks for your response.
Thanks Klaus.
My requirement is that my SOC doesn't have a ADC on it but it has audio interface to connect external i2c+i2s based CODEC, so am thinking of using LINEIN pin of CODEC to feed the voltage and read CODEC register to get the digital value of my analog voltage.
Hope you get it. :)...
Thanks Dana. I am using i.MX8M Mini SOC and unable to see ADC in there.
https://community.nxp.com/t5/i-MX-Processors/Is-there-support-for-ADC-in-i-MX-8M-Mini-series-of-processors/m-p/997391
Thanks for your replies.
Actually most of the microprocessor doesn't have support for ADC interfaces like microcontroller does.
These uC does have CODEC on it to do audio input/output processing to connect Line Input & Output for headphone jack connections, and not for just ADC/DAC purpose. but...
Hello,
I have a requirement to read analog voltage from Microprocessor LINEIN pin (Line Input for audio jack)
As i.MX8 doesn't have ADC i would like make use LINEIN pin to send analog voltage (0 to 3.3) and want to get as digital value by reading codec registers.
Is it possible ? sharing any...
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