I'm trying to integrate the RockBlock Iridium modem with my Raspberry PI.
I’m having an issue reading messages off the serial device with the SBD node.js library provided by Rock7 (http://www.veri.fi/iridiumsbd.tar.gz). It seems to work fine when using the USB to UART cable, however when wiring directly to the GPIO header on the PI (following the steps in the tutorial at http://www.makersnake.com/rockblock/) I can’t seem to read the messages. The serial connection to the modem seems OK. I can initiate, send messages, and receive ring alerts and signal quality, but once the message is downloaded, I can’t seem to read it.
The full output and error I’m receiving with the node.js library using direct header connections.