problems with SIM 18 GPS module

GPS/GNSS Development Boards
1

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.

2

Funny man…

3

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.