SerReceive

Syntax:

  SerReceive channel, output

Command Availability:

Available on all microcontrollers.

Explanation:

This command will read a byte from the RS232 channel given by channel according to the rules set using InitSer, and store the received byte in the variable output.

Example:

  'This program will read a byte from PORTB.2, and set the LED on if
  'the byte is more than 50. This can be used with the SerSend
  'example program.

  #chip 16F88, 8

  #define RecAHigh PORTB.2 ON
  #define RecALow PORTB.2 OFF
  #define LED PORTB.0

  Dir PORTB.0 Out
  Dir PORTB.2 In

  InitSer 1, r9600, 1 + WaitForStart, 8, 1, none, normal
  Do
    SerReceive 1, Temp          ' <<< the SerReceive instruction
    If Temp <= 50 Then Set LED Off
    If Temp > 50 Then Set LED On
  Loop

Key line: SerReceive 1, Temp — blocks until a byte arrives on software-UART channel 1, then stores it in Temp, using the bit rate, start/stop bits and parity previously configured by InitSer on that same channel.

See Also:

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