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Changes to be committed: modified: .gitattributes modified: CHANGES.md modified: Makefile modified: Makefile.linux new file: Makefile.macosx modified: Makefile.win modified: aclients.c modified: aprs_tt.c modified: aprs_tt.h modified: atest.c modified: audio.c modified: audio.h new file: audio_portaudio.c new file: audio_stats.c new file: audio_stats.h modified: audio_win.c modified: ax25_pad.c modified: ax25_pad.h modified: beacon.c modified: config.c modified: config.h modified: decode_aprs.c modified: decode_aprs.h modified: demod.c modified: digipeater.c modified: direwolf.c modified: direwolf.h modified: dlq.c modified: doc/README.md modified: doc/Raspberry-Pi-APRS.pdf modified: doc/User-Guide.pdf new file: doc/WA8LMF-TNC-Test-CD-Results.pdf modified: dtime_now.c modified: dtmf.c modified: dw-start.sh modified: encode_aprs.c modified: encode_aprs.h modified: gen_packets.c modified: gen_tone.c modified: gen_tone.h new file: generic.conf modified: grm_sym.h modified: hdlc_rec.c modified: hdlc_rec.h modified: igate.c modified: kiss.c modified: kiss_frame.c modified: kissnet.c modified: latlong.c modified: man1/direwolf.1 modified: mgn_icon.h modified: misc/README-dire-wolf.txt new file: misc/strlcat.c new file: misc/strlcpy.c modified: morse.c new file: morse.h modified: nmea.c modified: pfilter.c modified: ptt.c new file: serial_port.c new file: serial_port.h modified: server.c modified: symbols.c modified: symbols.h new file: telemetry-toolkit/telem-balloon.conf new file: telemetry-toolkit/telem-balloon.pl new file: telemetry-toolkit/telem-bits.pl new file: telemetry-toolkit/telem-data.pl new file: telemetry-toolkit/telem-data91.pl new file: telemetry-toolkit/telem-eqns.pl new file: telemetry-toolkit/telem-m0xer-3.txt new file: telemetry-toolkit/telem-parm.pl new file: telemetry-toolkit/telem-unit.pl new file: telemetry-toolkit/telem-volts.conf new file: telemetry-toolkit/telem-volts.py modified: telemetry.c modified: textcolor.c modified: tq.c modified: tt_text.c modified: tt_text.h modified: tt_user.c modified: tt_user.h modified: utm2ll.c modified: version.h new file: walk96.c modified: xmit.c
37 lines
981 B
Python
37 lines
981 B
Python
#!/usr/bin/python
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# Part of Dire Wolf APRS Telemetry Toolkit, WB2OSZ, 2015
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# Derived from
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# https://github.com/adafruit/Adafruit-Raspberry-Pi-Python-Code/blob/master/Adafruit_ADS1x15/ads1x15_ex_singleended.py
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import time, signal, sys
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from Adafruit_ADS1x15 import ADS1x15
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ADS1015 = 0x00 # 12-bit ADC
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ADS1115 = 0x01 # 16-bit ADC
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# Set ADC full scale to 2048 mV.
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# Can't use original 4096 with 3.3V supply.
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gain = 2048
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# Select the sample time, 1/sps second.
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# Longer is better to average out noise.
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sps = 64
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# Set this to ADS1015 or ADS1115 depending on the ADC you are using!
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adc = ADS1x15(ic=ADS1115)
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# Values for voltage divider on ADC input.
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r1 = 1000000.
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r2 = 100000.
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# Read channel 0 in single-ended mode using the settings above
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volts = adc.readADCSingleEnded(0, gain, sps) * 0.001 * (r1+r2) / r2
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# Calibration correction specific to my hardware.
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# (multiply by expected value, divide by uncalibrated result.)
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#volts = volts * 4.98 / 4.889
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print "%.3f" % (volts)
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