hsersend - Anobium/Great-Cow-BASIC-Help GitHub Wiki

HSerSend

Syntax:

    HSerSend user_byte [,1|2|3|4]   'Choose comport with optional parameter
                                      'Default comport is 1

Command Availability:

Available on all microcontrollers with a USART or UART module.

Microchip PIC supports USART1 and 2.
Atmel AVR supports USART 1,2,3 and 4.

Enabling Constants:

To enable the use of the USART these are the enabling constants.   These constants are required.  You can change the USART_BAUD_RATE and to meet your needs.  For addition USART ports use #define USARTn_BAUD_RATE 9600 where n` is the required port number.

    'USART settings for USART1
    #define USART_BAUD_RATE 9600
    #define USART_TX_BLOCKING
    #define USART_DELAY OFF

Explanation:

This command will send a byte given by user_byte using the hardware RS232 module.

Example:

  'This program will send the status of PORTB through the hardware
  'serial module.

  #chip 16F877A, 20

  'USART settings
  #define USART_BAUD_RATE 9600  'Initializes USART port with 9600 baud
  '#define USART_BLOCKING   ' Both of these blocking statements will
  #define USART_TX_BLOCKING ' wait for tx register to be empty
                ' use only one of the two constants
  #define USART_DELAY OFF

  'Set PORTB to input
  Dir PORTB In
  'Set USART transmit pin to output
  Dir PORTC.6 Out

  'Main loop
  Do
    'Send PORTB value through USART
    HSerSend PORTB
    HSerSend(13)    ' sends a CR
    'Short delay for receiver to process message
    Wait 10 ms      'probably not necessary with blocking statement
  Loop
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