LabVIEW Embedded

cancel
Showing results for 
Search instead for 
Did you mean: 

labview FPGA Sequence Serial

Hi i tried to do one sequence of serial communication , first send a character, second wait a time, and the last the read, all this communication is for a RFID device, the problem is when i run the VI  always send the character and wait time, but never read, all parts of this sequence works fine when i tested in specially the reading part, i really i don't know what is wrong with this sequence, i added the images of the subvi's I've done.
Thanks
 
Download All
0 Kudos
Message 1 of 5
(7,061 Views)
P.S. in the image  of the subVI for send a character you probably see the the port said DCE and the subVI for read you see DTE, this is for a take the image of read from previous subVI, but boths subVIs now used DTE 😛
0 Kudos
Message 2 of 5
(7,056 Views)
on your read case, you are not waiting for start bit, only checking if low.  if not low, it skips rest of logic.  is this what you wanted to do?  did you want to wait for edge of start bit?
Stu
0 Kudos
Message 3 of 5
(7,047 Views)
yes, with the read case in this way work for me , i don't know if a broken any rule, i tested this case sending from pc something via serial and work very well, the problem for me is when i build and run the sequence of send, wait and read, for the moment the first two cases work, the read not
0 Kudos
Message 4 of 5
(7,039 Views)
get the o-scope out to verify your assumptions of the signals from your device.
Stu
0 Kudos
Message 5 of 5
(7,032 Views)