projects / sigrok-dumps.git / blame
| Commit | Line | Data |
|---|---|---|
| ed59014b UH |
1 | ------------------------------------------------------------------------------- |
| 2 | USB HID | |
| 3 | ------------------------------------------------------------------------------- | |
| 4 | ||
| 5 | This is a set of example captures of USB/HID communication on an Olimex | |
| 6 | STM32-H103 eval board with an ST STM32 (ARM Cortex-M3) microcontroller. | |
| 7 | ||
| 8 | The firmware on the board is a simple libopencm3 example named 'usb_hid' | |
| 9 | which lets the mouse curser move a small amount to the left and then back | |
| 10 | to the right in an infinite loop. | |
| 11 | ||
| 12 | Details: | |
| 13 | http://olimex.com/dev/stm32-h103.html | |
| 14 | http://libopencm3.org | |
| 15 | http://libopencm3.git.sourceforge.net/git/gitweb.cgi?p=libopencm3/libopencm3;a=tree;f=examples/stm32/f1/stm32-h103/usb_hid | |
| 16 | ||
| 17 | ||
| 18 | Logic analyzer setup | |
| 19 | -------------------- | |
| 20 | ||
| 47cd3c8f | 21 | The logic analyzer used was a ChronoVu LA8 (at 100MHz): |
| ed59014b UH |
22 | |
| 23 | Probe STM32-H103 | |
| 24 | ---------------------- | |
| 25 | 6 (blue) DM | |
| 26 | 7 (yellow) DP | |
| 27 | ||
| 28 | ||
| 29 | olimex_stm32-h103_usb_hid.sr | |
| 30 | ---------------------------- | |
| 31 | ||
| 32 | The sigrok command line used was: | |
| 33 | ||
| 34 | sigrok-cli -d 0:samplerate=100mhz --samples 8388608 \ | |
| 35 | -p '7=DM,8=DP' -o <filename> | |
| 36 |