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Voltcraft VC-940 multimeter
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This is a set of example captures of various communication channels in a
Voltcraft VC-940 multimeter:
- Texas Instruments MSP430F149: UART
- IR transmitter diode: UART
- Cyrustek ES51966F: custom 3-wire protocol (SCLK, STATUS, EOC)
- 24LC515: I²C
Details:
http://sigrok.org/wiki/Voltcraft_VC-940
Logic analyzer setup
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The logic analyzer used was a Saleae Logic16 (at 500kHz / 1MHz / 4MHz):
Probe Voltcraft VC-940
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0 M430F149 UTXD1
1 M430F149 URXD1
2 ES51966F STATUS
3 ES51966F SCLK
4 ES51966F EOC
5 TX1 (IR)
6 24LC515 SDA
7 24LC515 SCL
8 24LC515 WP
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