GPS GPL driver.

Koen Kooi koen at
Thu May 3 13:04:45 CEST 2007

Hash: SHA1

Werner Almesberger schreef:
> Koen Kooi wrote:
>> You're right, 'stty -F /dev/ttySAC1 raw 115200 -crtscts cs8 -parenb
>> -cstopb' seems to work better, but still a mute uart.
> I think you'll be better off just writing a little C program that
> does read/write and calls the appropriate termios functions. That
> way, you don't have to worry about program doing weird system
> call behind your back.

Philipp wrote this:

I can only get output if I power cycle the gps, and even then it's only a single 0x00.

from sysfs:

power_avdd_3v: 1
power_core_1v5: 0
power_lp_io_3v3: 1
power_pll_core_2v5: 1
power_sequence: power_up power_down
pwron: 1
reset: 1

I'm a bit too lazy to disassemble the neo and stick in a multimeter (or bring it to the
lab and attach a scope), so any idea on how to debug this from the software side?



> Regarding the parameters, you may want to check what they got on
> Tom Tom. Particularly the bit rate might be the same.
> We also have test points on the serial line between MCU and GPS
> (H-TP7601 through H-TP7604). I don't have the GTA01Bv3 layout,
> but I think they're on the top side, next to the debug connector,
> labeled GPS_*.
> - Werner

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