GW-USB-05
RTCC
Real-time clock / calendar MCP7940NT by Microchip has the I2C serial bus shared with the EEPROM. It can be
controlled from TR module. Decoupling capacitors ensure RTCC backup for 30 s after disconnecting power supply
which allows to quickly replug the device from one host USB to another keeping the RTCC running.
RTCC is not supported at all in current version of firmware and demo user software.
Serial Flash memory
Flash memory 8 Mb with serial SPI interface is connected to main MCU. It is not supported in current firmware
version, reserved for future use and optional on request.
LEDs
Three LEDs inside the case are mainly intended for debug and service purposes.
•
LED3 dedicated to the main MCU – red
•
LED3 flashes for 500 ms after reset.
•
LED3 flashing in 1 s period means CDC mode (Custom Device mode is without flashing).
•
LED3 flashes 3x after clicking the
Check USB Device
(
F11
) in respective IQRF IDE (to identify the device among
other IQRF USB devices in case of multiple IQRF IDE instances).
•
LED3 flashing in 300 ms period means missing firmware (see Software below).
•
LEDs dedicated to TR module – LED1 (red) and LED2 (green).
Software
Firmware for the main MCU is fixed but can be upgraded by the user using the code provided by IQRF manufacturer.
Refer to IQRF Application note
AN008 – Firmware upgrade
for details.
TR module functionality is fully user programmable. Factory default is E03-TR (one of basic IQRF examples).
Programming and uploading the code is similar to the CK-USB-04 development kit.
Product information
Pack list
•
GW-USB-05
USB gateway, with E03-TR example uploaded in TR module.
Ordering code
•
GW-USB-05
USB gateway (serial Flash memory included).
Document history
•
130220
Serial Flash memory is a standard for GW-USB-05 but not an option.
•
130125
First release.
© 2013 MICRORISC s.r.o.
www.iqrf.org
MNGWUSB04_ 130220
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