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Total time for PRINT STATEMENT

 
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azny

Bascom Member



Joined: 25 Aug 2008
Posts: 36
Location: usa
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PostPosted: Mon Jun 25, 2018 7:51 pm    Post subject: Total time for PRINT STATEMENT Reply with quote
Hello

I am trying to minimize the time required by PRINT statement to print 1 byte of data
Considering a baudrate of 38400, time required to send 10bits of data (1 start bit +8 bit data + 1 stop bit)= 10/38400= 260usec
When I use the Print Command to print 1 byte of data it takes around 785usec/byte
Is there a way where I can reduce this amount of time required to Print a byte and get it close to Ideal scenario (i.e 260usec)
I tried the PUT command but it did not work (if anyone could provide an example that would be great)
Thank you

Code:
$regfile = "M164pdef.dat"
$crystal = 3686400
$baud = 38400
$hwstack = 80
$swstack = 80
$framesize = 80


Config Com2 = 38400 , Synchrone = 0 , Parity = None , Stopbits = 1 , Databits = 8 , Clockpol = 0

 'use OPEN/CLOSE for using the second UART
Config Serialin1 = Buffered , Size = 32
Open "COM2:" For Binary As #1
Config Print1 = Portd.4 , Mode = Set
Config Portd.4 = Output

Dim C3 As Byte

C3 = 81

 Do

 Print #1 , Chr(c3)

 Loop



[/code]

(BASCOM-AVR version : 2.0.7.5 , Latest : 2.0.8.1 )
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albertsm

Administrator



Joined: 09 Apr 2004
Posts: 6197
Location: Holland
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PostPosted: Mon Jun 25, 2018 8:10 pm    Post subject: Reply with quote
at some stage it is a good idea to read the manual.
or to search the forum.
what you are missing is that you you send 3 bytes : your data byte, and a CR + LF
To suppress the CR and LF, end the line with ; (semi colon)
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