Pi-SPROG One User Guide 9
Version 1.3 January 15th 2017 © Copyright 2017 SPROG DCC
command station mode which allows multiple throttles to be used but restricts
programming to “ops mode” or “on the main”. CV values cannot be read back
in this mode.
To use a programming track in service mode, which allows CVs to be read,
the DecoderPro connection preference must be changed, for which you need
to access the Raspberry Pi desktop, see Error! Reference source not found..
GPIO Pass-Through Connector
The Pi-SPROG One passes all Raspberry Pi GPIO pins through to a 40-pin
header that allows further accessory boards (“hats”) to be connected. There
are, however, some restrictions on using these pins.
The UART Rx and Tx pins (pins 8 and 10) are used by the Pi-SPROG One.
No further connection should be made to these pins.
The SPI pins (pins 19, 21, 23 and 24) are connected on the Pi-SPROG One
and reserved for possible future use. In the meantime, with the current
firmware, they are connected to digital inputs and may safely be used.
Determining the Pi-SPROG One Firmware Version
Please download the SPROG IIv3 User Guide from the SPROG DCC
website. The procedure for obtaining the firmware is very similar to that
described for the SPROG IIv3.
The SPROG Console
Please download the SPROG IIv3 User Guide from the SPROG DCC
website. The procedure for using the SPROG console for the Pi-SPROG One
is very similar to that described for the SPROG IIv3.
Updates to the Pi-SPROG One Firmware
Please download the SPROG IIv3 User Guide from the SPROG DCC
website. The procedure for updating the Pi-SPROG One firmware is very
similar to that described for the SPROG IIv3.
At the time of writing no firmware updates are available and you should not
attempt to use this option.