diff options
Diffstat (limited to 'usb/hid')
| -rw-r--r-- | usb/hid/serial/README | 25 | ||||
| -rw-r--r-- | usb/hid/serial/cp2110_serial_over_hid_ut612.sr | bin | 0 -> 577119 bytes |
2 files changed, 25 insertions, 0 deletions
diff --git a/usb/hid/serial/README b/usb/hid/serial/README new file mode 100644 index 0000000..cdfcd1d --- /dev/null +++ b/usb/hid/serial/README @@ -0,0 +1,25 @@ +------------------------------------------------------------------------------- +SiLabs CP2110 serial-over-HID, UT612 LCR meter +------------------------------------------------------------------------------- + +This is a capture of UART-over-HID communication to a UNI-T UT612 LCR meter +which contains the SiLabs CP2110 HID chip and the ES51919 LCR meter chip. +UART communication uses 9600/8n1, USB HID runs at full speed (USB1.1 12MHz). + +The LCR meter actually exclusively transmits data to the PC's RX line. The +PC's TX traffic is just a development hack in preparation of bidirectional +communication where cables support it. + + +Logic analyzer setup +-------------------- + +The Asix Sigma analyzer was set to 50MHz samplerate. Capture length is 200M +samples, which translates to four seconds duration. + + Probe CP2110 signals + -------------------------- + 1 USB D+ + 2 USB D- + 3 UART TX (sigrok to meter) + 4 UART RX (meter to sigrok) diff --git a/usb/hid/serial/cp2110_serial_over_hid_ut612.sr b/usb/hid/serial/cp2110_serial_over_hid_ut612.sr Binary files differnew file mode 100644 index 0000000..833432a --- /dev/null +++ b/usb/hid/serial/cp2110_serial_over_hid_ut612.sr |