UHF receiver to USB datalogger with BS2

Ferwerda

Can anyone help me with advice or a sample code, which could point me in the right direction, since I'm a noob in basic stamp programming.

I have been trying to write data from the receiver to the datalogger.
The signal is digital and I have been able to show it on the Debug screen. (Sample rate was not correct though) The UHF connection is ASK modified with a NRZ line code and my tests were with a bit rate of 1000 baud.

Franklin

Show us the code you use to display it on the debug screen.

Ferwerda

I've had some great progress, since figured out how to use serout en serin. I have been able to write data to it. However i've been using a function generator so before I can really check if it works, I have to connect my transmitter to my pc using Matlab. I will post my program as soon as I can do a good test.

Ferwerda

The datalogger works, I can send as much information as needed the only problem I'am having is writing faster. How can I make an array of bytes, some sort of buffer, so I can write multiple bytes to the datalogger at once?

This is my for loop now (this writes 1 byte at a time, which is too slow. I now have to pause between every new byte in Matlab since an handshake is not possible with the UHF receiver)

FOR counter2 = 1 TO NumtotSamples
SERIN UHF, 16572, [result] 'Baudrate = 4800 no parity


DEBUG result ' Display Results
SEROUT TX/ CTS,Baud,[$08,$20,$00,$00,$00,$0D,CR,result,CR,CR]
GOSUB Write_Data ' Purge Receive Buffer

NEXT

Get_Data:
index = 0 ' Reset Index Pointer
DO ' Receive Data
SERIN RX\RTS, Baud, 100, Timeout, [ioByte]
buffer(index) = ioByte ' Add Received Byte To Buffer
index = index + 1 ' Increment Index Pointer
IF index > 14 THEN Timeout ' Check For Overflow
LOOP

Timeout:
RETURN