CCS/CC1350: CC1350 - Battery Monitor

Mrudula Manjunath

Part Number: CC1350

Tool/software: Code Composer Studio

Hello,

I am trying to use the battery monitor on the CC1350 chip.

1. Does the BAT register (Offset = 0028H) give the voltage value directly or do I need to process the register value in my code?

2. I am planning to use a supply of 4.5V and give 3.3V to the board through a voltage regulator. How can the battery monitor be used to keep the battery voltage in check in this case? How can I by-pass the voltage regulator without harming the board?

over 6 years ago

0 Fredrik K over 6 years ago

TI__Guru** 106705 points

Hi Mrudula,

1) Refer to the Technical Reference Manual and also the SensorTag example SW.
2) In that case the battery monitor cannot be used. Instead you can use resistors to downscale the battery voltage and input it to the ADC.

Cheers,
Fredrik

0 manik sharma over 6 years ago in reply to Fredrik K

Prodigy 155 points

which example is it ?

i have the same doubts.

0 YiKai Chen over 6 years ago in reply to manik sharma

Guru 735455 points

Maybe try to refer to discussions in e2e.ti.com/.../2137997

0 manik sharma over 6 years ago in reply to YiKai Chen

Prodigy 155 points

thanks.
this seems helpful.

0 manik sharma over 6 years ago in reply to YiKai Chen

Prodigy 155 points

hey,

i did this:
printf("%" PRIu32 ": is something\n", AONBatMonBatteryVoltageGet());
somewhere in my code.

and its showing a no. 850 everytime.

i know the output format of AONBatMonBatteryVoltageGet() is <int.frac> but could you give me a way to convert it into a more understandable form.

0 YiKai Chen over 6 years ago in reply to manik sharma

Guru 735455 points

Try also refer to e2e.ti.com/.../545504

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CCS/CC1350: CC1350 - Battery Monitor