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115kbaud =~ 11.5kb/s ( need at least 2 byte for a freq detect, ie. max freq detectable about 11.5khz/2 )\n- C++ opengl program to display waveform\n\n## keys\n\n- *space* : pause display\n- *v/V* : decrease/increase vertical factor\n- *h/H* : decrease/increase horizontal factor\n- *up/down* : delta vertical\n- *p* : toggle point mode\n- *t* : toggle text info\n\n## flash arduino\n\n- pre: install [arduino ide](https://www.arduino.cc/en/Main/Software)\n- open sketch `arduino-scope/arduino-scope.ino` and flash firmware\n  - tools/board ( eg. arduino nano )\n  - tools/port\n  - sketch upload\n\n## debug and execution\n\n- pre: install [vscode](https://code.visualstudio.com/) and suggested c++ extension asked when open the folder\n\n```\ncode .\n```\n\n- breakpoints works thanks to `gdb` debugger ( `-g` switch to gcc - see Makefile )\n- tune serial port in `launch.json` \"args\"\n- hit F5 to start\n\n## dev notes\n\n- an ethernet udp branch exists but no increase in freq rate because bottleneck still exists in ADC conversion\n\n## comparision\n\n| freq | sine | square |\n|---|---|---|\n| 460hz | ![img](doc/sin460hz.png) | ![img](doc/sq463hz.png) |\n| 1.57khz | ![img](doc/sin1_57khz.png) | ![img](doc/sq1_58khz.png) |\n| 3.26khz | ![img](doc/sin3_26khz.png) | ![img](doc/sq3_23khz.png) |\n| 4.44khz | N/A | ![img](doc/sq4_44khz.png) |\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fdevel0%2Fiot-arduino-scope","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fdevel0%2Fiot-arduino-scope","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fdevel0%2Fiot-arduino-scope/lists"}