CS-I2CMINI-02

2 2 I CDriver and I CMini User Guide 1 Last updated on February 10, 2021 Contents 1 Overview 3 1.1 Features 3 2 Getting Started 4 3 Software installation 6 3.1 Windows . 6 3.2 Linux 8 3.3 MacOS 9 4 APIs 10 4.1 Python 2 and 3 10 4.2 C/C++ . 12 2 5 Using I CDriver 13 5.1 The display 13 5.2 The GUI 15 5.3 The command-line tool i2ccl 19 5.4 Monitor mode . 20 5.5 Capture mode 20 5.5.1 Command line 21 5.5.2 GUI 21 6 Examples 23 2021 Excamera Labs2 2 I CDriver and I CMini User Guide 2 6.1 Color Compass 23 6.2 Egg Timer . 24 6.3 Take-a-ticket . 24 7 Technical notes 25 7.1 Port names 25 7.2 Decreasing the USB latency timer . 25 7.3 Temperature sensor . 26 7.4 Raw protocol . 27 7.4.1 : transmit status info 28 7.4.2 e: echo byte . 29 7.4.3 1: set speed to 100 KHz . 29 7.4.4 4: set speed to 400 KHz . 30 7.4.5 s: START . 30 7.4.6 0x80-bf : read 1-64 bytes, NACK the nal byte 30 7.4.7 0xc0-ff : write 1-64 bytes 31 7.4.8 a: read N bytes, ACK every byte 31 7.4.9 p: send STOP 31 2 7.4.10 x: reset I C bus 32 7.4.11 r: register read 32 7.4.12 d: scan devices, return 112 status bytes 33 7.4.13 m: enter monitor mode 33 7.4.14 c: enter capture mode 33 7.4.15 b: enter bitbang mode 33 2 7.4.16 i: leave bitmang, return to I C mode 34 7.4.17 u: set pullup control lines 34 7.4.18 : reboot 34 7.5 Pull-up resistors . 34 7.6 Bitbang mode . 35 7.7 Capture mode 37 7.8 Specications . 39 8 Troubleshooting 40 9 Support information 40 Index 41 2021 Excamera Labs