Q2501 AT+ADC? PA_TEMP temperature


#1

Hello Everybody,
I’m trying to measure temperetare of the q2501 module(OpenAT 3.10), couse I’m afraid the module overheats.
The AT_Commands_Interface_Guide_for_X55_release_rev002.pdf manual states that on q2501 command AT+ADC? provides a responce:
+ADC:[BAT_VOLT],[ADC_AUX],[ANTENNA_VOLT],[PA_TEMP]
PA_TEMP stands for Power amplifier temperature, thats what I want, but the manual dosn’t tell how to interpret the value of PA_TEMP.
On my q2501 module AT+ADC? gave me:
+ADC: 4340,15,3077,927
+ADC: 4240,15,3077,1054
+ADC: 4240,15,3077,1061
How do I make temperature from 927 or 1054 or 1061?
Dividing the numbers by 1024 as for ADC_AUX gives numbers(~0.9-1) that don’t make sense.
Thanks reading this.


#2

It tells you how to interpret the value as an input voltage to the ADC.

Does the Q2501 Datasheet tell you how this voltage relates to temperature?


#3

I don’t know whether it is documented or not ( my guess is not ), but just check the AT+WGPSCONF=2 at command, there is a nice temperature value in the answer.

Cheers,
tom


#4

File Q2501B-PTS.pdf tells: “Features…Internal sensor for module temperature monitoring via AT commands…”

and no detailed information.


#5

Thank you!
It is documented in in GPS_Specific_AT_commands_for_GPS_Management_rev006.pdf. The command reports temperature in Celsius degrees, very convenient.