Here is my question:
I have adapted a progaram from the example of hardwares libraries of Mikropascal Pro including transmitters and receivers
''Aurel'' and ''Micontroli''.
The initial program works perfectly in wireframe ''RC to RC0''.
On the other hand, in RF mode, the Lcd only displays ''???,,,,,,,????......, without exeption.
Transmittres and receivers run 100% from another progrm writter in ASM.
After comparing the 2 frames to the scope, i understood where the problem could come from.
Under Mikropascal,the1 bit ''manchester''frame measures more than 4 ms and the inter-frameabout 60 ms.
By other program in ASM, the bit measures 1 ms and the inter-frame 10ms, it works correctly.
The receiver ''aurel has an automatic gain adjustement which triggers in the absence of signal of more than 15 ms.It then sends parasitic signals which affect the frames.
I tried to change the delays: I have not got satisfactory improvement.
It seens to me that it could be necessary to use a transmission much superior to the 500 bauds of the routine ''man send''.But i have not found a way to change it.
I use Mikropascal, Mikro C easypic5, easypic6 and easypic7,device pic16f628, 16f887 16f877, 16f874.
Could you help me, please.