- Fri Jan 05, 2007 11:12 pm
#24575
Hello!
I picked up the OEM version of the Lassen iQ for a UAV board I'm working on. It's small and light, so it looks friendly enough, but when trying to interface with it over a USART in a PIC, it violates the TSIP protocol rather flagrantly - I transmit the data streams 0x10 0x21 0x10 0x03 (a time check in accordance with the TSIP packet protocol), and it sends back 0x40 0x74 0x40 0x07, which not only violates protocol, but is entirely unusable. Furthermore, upon further experimentation, it sends that string no matter what I do. I'm on a bit of a deadline here, and really like this GPS, but it's beginning to bother me. Am I doing something wrong here? Is it just a bad chip?
Thanks in advance!
Sparks
I picked up the OEM version of the Lassen iQ for a UAV board I'm working on. It's small and light, so it looks friendly enough, but when trying to interface with it over a USART in a PIC, it violates the TSIP protocol rather flagrantly - I transmit the data streams 0x10 0x21 0x10 0x03 (a time check in accordance with the TSIP packet protocol), and it sends back 0x40 0x74 0x40 0x07, which not only violates protocol, but is entirely unusable. Furthermore, upon further experimentation, it sends that string no matter what I do. I'm on a bit of a deadline here, and really like this GPS, but it's beginning to bother me. Am I doing something wrong here? Is it just a bad chip?
Thanks in advance!
Sparks