QuickBasic Cafe Forum

This program reads a com port and plots a voltage reading sent to the com port via an A/D QB64 always causes an Input Past End of File error when reading a com port but the included ON ERROR / Error handling sub takes care of it. CLS LOCATE 2, 20, , 0, 7 PRINT "COLLECTING DATA" _DELAY 1 j = 0 ' Coun...

SOLUTIONS USED: I used the OPEN FOR INPUT command and Z$=INPUT(LOC(2),#2) which I knew would result in an INPUT PAST END OF FILE error. I had to use LOC instead of LOF b/c LOF was always =0 and my routine returned LOC = a valid number. just before the Z$= INPUT command I added the line ON ERROR GOTO...

I have since added the following lines after the _Delay .25 line. getdata: bytes% = LOC(2) ' Check receive buffer for data IF bytes% = 0 THEN GOTO getdata ' After more than 300 thousand of getdata cycles it continues Now EOF is still -1 but LOC is 17 and LOF still shows 0 How can LOF be 0 if there a...

I have an A/D converter that has placed the following characters in Com Port #3: Voltage = 1.2, * I am using the following QB64 code to read the serial data: ‘ ** Wipe out old messages Z$ = "" OPEN "Com3:9600,n,8,1,ds0,cs0,rs" FOR INPUT AS #2 _DELAY .25 ' Delay to let Com Port settle PRINT "EOF="; E...