set_wp does not handle negative longitude

[FabianSchwartau]

The title basically says it all. I get:

Traceback (most recent call last):
File "rc.py", line 8, in
copter.set_wp(1, 1, 50.9103311, -10.5349744, 0, 10, 0, 0, 0)
File "MSP.py", line 194, in set_wp
payload += int(lon * 10000000).to_bytes(4, byteorder='little')#lon
OverflowError: can't convert negative int to unsigned

[nik012003]

Hi, thanks for pointing out this issue.

typedef struct {
uint8_t action;
int32_t lat;
int32_t lon;
int32_t alt;
int16_t p1, p2, p3;
uint8_t flag;
} navWaypoint_t;

lat, lon, alt variables are signed int but in the OpenGS code they are treated as unsigned.
You'd need to add signed=True in the to_bytes function.Like this:

payload += int(lon * 10000000).to_bytes(4, byteorder='little', signed=True)

I hope this fixes your problem. Unfortunately I cannot test it/ upload new code now as I won't be home for a few days.