projects / sigrok-dumps.git / blame
| Commit | Line | Data |
|---|---|---|
| 79edccdc | 1 | ------------------------------------------------------------------------------- |
| 398ac04e | 2 | Cyrustek ES51978 based multimeter, serial communication |
| 79edccdc AJ |
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 | ||
| 980c65cc | 18 | The logic analyzer used was an OpenBench Logic Sniffer (at 100kHz): |
| 79edccdc | 19 | |
| 398ac04e UH |
20 | Probe RS232 cable |
| 21 | ----------------------- | |
| 79edccdc AJ |
22 | 0 RX |
| 23 | ||
| 24 | ||
| 25 | Data | |
| 26 | ---- | |
| 27 | ||
| 980c65cc | 28 | Contains 3 samples sent by the multimeter set in resistance mode, measuring |
| 79edccdc AJ |
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 |