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Diffstat (limited to 'usb/hid/lisa_m_usbhid/README')
| -rw-r--r-- | usb/hid/lisa_m_usbhid/README | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/usb/hid/lisa_m_usbhid/README b/usb/hid/lisa_m_usbhid/README new file mode 100644 index 0000000..deaf551 --- /dev/null +++ b/usb/hid/lisa_m_usbhid/README @@ -0,0 +1,37 @@ +------------------------------------------------------------------------------- +Lisa/M USB HID example (USB Full-Speed and SPI) +------------------------------------------------------------------------------- + +This capture is taken from the libopencm3 example for a USB HID device on the +Paparazzi Lisa/M board. In this applicaton an SPI accellerometer is read and +the values are transmitted on a USB IN endpoint as mouse movement. + +Details: +http://libopencm3.org +http://libopencm3.git.sourceforge.net/git/gitweb.cgi?p=libopencm3/libopencm3;a=tree;f=examples/stm32/f1/lisa-m/usb_hid +http://paparazzi.enac.fr/wiki/User/LisaM + + +Logic analyser setup +-------------------- + +The logic analyzer used was an Openbench Logic Sniffer (at 50MHz): + + Probe Signal + --------------- + 0 USB_DM + 1 USB_DP + 2 SPI_NCS + 3 SPI_SCK + 4 SPI_MOSI + 5 SPI_MISO + +The sigrok command line used was: + + sigrok-cli -d 0:samplerate=50mhz:rle=on \ + -p 1=USB_DM,2=USB_DP,3=SPI_NCS,4=SPI_SCK,5=SPI_MOSI,6=SPI_MISO \ + --time=50ms -o lisa_m_usb_spi.sr + +The OLS can't actually capture 50ms, so it just captures as much as it can +buffer. No triggering was used. + |