$BAUD1/de
Contents |
= (**COPIED FROM ENGLISH PAGE**) === Action
Instruct the compiler to set the baud rate for the second hardware UART.
Syntax
$BAUD1 = var
Remarks
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Var |
The baud rate that you want to use. This must be a numeric constant. |
In the generated report, you can view which baud rate is actually generated.
When you simulate a program you will not notice any problems when the baud rate is not set to the value you expected. In real hardware a wrong baud rate can give weird results on the terminal emulator screen. For best results use a crystal that is a multiple of the baud rate.
Some AVR chips have 2 UARTS. For example the Mega161, Mega162, Mega103 and Mega128. There are several other's and some new chips even have 4 UARTS.
In the simulator you need to select the UART1-TAB to view the output of the UART1, or to send data to this UART.
See also
Example
'------------------------------------------------------------------------------- 'copyright : (c) 1995-2005, MCS Electronics 'micro : Mega162 'suited for demo : yes 'commercial addon needed : no 'purpose : demonstrates BAUD1 directive and BAUD1 statement '------------------------------------------------------------------------------- $regfile = "M162def.dat" $baud1 = 2400 $crystal= 14000000 ' 14 MHz crystal Open "COM2:" For BINARY As #1 Print #1 , "Hello" 'Now change the baud rate in a program Baud1 = 9600 ' Print #1 , "Did you change the terminal emulator baud rate too?" Close #1 End
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