SparkFun Forums

[lonardj]

We designed a product in which we have used SIM18 module.
Please help me to resolve the following issues.
--> SIM18 is connected to DSPIC33F micro controller through SPI
--> Periodically i am receiving GGA/GSA/GSV messages. but it contains no useful informations
--> How can i send input meessages to the module through SPI
-->I found no application notes on your website.Even i could not open your website properly
-->I have connected no batteries for RTC.
-->No sattelited detected
--> i have used external passive antenna.I have designed RF pads everything as per the datasheet.

--> what exactly idle pattern A7B4 means.Please give some sample code.

[mbavaro77]

Funny man...

[mburumaxwell]

did you manage to get it to work? i am thinking of using it also, but would like to know if yours worked. As for sending a message to it, I think you should convert your string (e.g $PSRF.....) to bytes and send them via SPI as you would to to anything connected via SPI.