Serial data sending#do someone came across programming 16f676 with TRH031M?

[Hanson]

Hi Henrik,

• 
  i VAR BYTEDataIn VAR BYTE[16]ActualData VAR BYTE [6]' DataIn is 16 bytes containg A A A A A H A N S O N E E E E E' Verify that the first 5 bytes are all "A"For i = 0 to 4 If DataIn[i] <> "A" THEN GOTO Start ' Nope, not qualified, start over...NEXT' Verify that the last 5 bytes are all "E"For i = 11 to 15 If DataIn[i] <> "E" THEN GOTO Start ' Nope, not qualified, start over...NEXT' Yes, header and footer qualified. Now extract actual data, 6 bytes, store in array ActualDataFor i = 5 to 10 ActualData[i-5] = DataIn[i]NEXT
  
  
  

If first 5 bytes received are correct then GOTO start. In this case if first 5 bytes received correctly and last 5 bytes are wrong? It runs "start" subroutine without checking the last 5 bytes?

Regards

[HenrikOlsson]

Hi,

If first 5 bytes received are correct then GOTO start.

No.... It checks the first 5 bytes, if any of them is NOT "A" it jumps to start.

In this case if first 5 bytes received correctly and last 5 bytes are wrong? It runs "start" subroutine without checking the last 5 bytes?

No.... If it finds that the first 5 bytes are received correct it continues to check the last 5 bytes. If they TOO are correct it extracts the data. If any of the last the 5 bytes are wrong it'll jump back to start without extracting the data.

Only when the first bytes are "A" AND the last 5 bytes are "E" will it extract the data. As soon as ANY of the first 5 bytes OR the last 5 bytes does NOT match will it jump back to start - which is whay you said it should do:

if all conditions matched (receive first 5 "A" and last 5 "E" properly) then store data_in

/Henrik.