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Commit | Line | Data |
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1 | ------------------------------------------------------------------------------- | |
2 | Cyrustek ES51978 based multimeter, serial communication | |
3 | ------------------------------------------------------------------------------- | |
4 | ||
5 | This is a set of example captures of the serial (UART) communication and | |
6 | its timings on an optical RS232 cable for the ISO-TECH IDM103N digital | |
7 | multimeter based on the Cyrustek ES51978 chip. | |
8 | ||
9 | The UART parameters are 2400 baud, with 7e1 settings. | |
10 | ||
11 | Details: | |
12 | http://www.cyrustek.com.tw/spec/ES51978.pdf | |
13 | ||
14 | ||
15 | Logic analyzer setup | |
16 | -------------------- | |
17 | ||
18 | The logic analyzer used was an OpenBench Logic Sniffer: | |
19 | ||
20 | Probe RS232 cable | |
21 | ----------------------- | |
22 | 0 RX | |
23 | ||
24 | ||
25 | Data | |
26 | ---- | |
27 | ||
28 | Contains 3 samples sent by the multimeter set in resistance mode, mesuring | |
29 | skin resistance, a few Mega Ohm. | |
30 | ||
31 | The sigrok command line used was: | |
32 | ||
33 | sigrok-cli -d ols:conn=/dev/ttyACM0 -c samplerate=100khz:rle=1 \ | |
34 | -p 0=RX -t RX=0 -o es51978.sr --samples=245760 |