SimCom T900 - ADC Channel

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T900_User Guide_V1.02 20 2013-05-22
+CME ERROR: <err>
Parameter
See Write Command
Response
OK
If error is related to ME functionality:
+CME ERROR: <err>
Write Command
AT+CLVL=<leve
l>
Parameter
<level> 0-100 Integer type value with manufacturer specific range
(smallest value represents the lowest sound level)
Reference
GSM 07.07 [13]
Note
Please refer to document [1] and document [5] for details.
6.3.2 ADC channel
T900 provides an auxiliary ADC, which can be used to measure the voltage. User can use AT command
“AT+CADC” to read the voltage value.
Table 9: ADC specification
Parameter Min Typ Max Unit
Voltage range 0 - 2.8 V
ADC Resolution - 10 - bits
Sampling rate - - 200K Hz
Note: the maximum voltage that the ADC can gather is 2.8V
Table 10: AT+CADC Read ADC
AT+CADC Read ADC
Response:
+CADC: (list of supported <status>s),(list of supported <value>s)
OK
Test Command
AT+CADC=?
Parameters
<status> 1 Success
0 Fail
<value> Integer 0-2800
Response:
+CADC: <status>,<value>
OK
Read Command
AT+CADC?
Parameters
See Test Command