Mikroelektronika MIKROE-350 Datenbogen

353

- SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

CHAPTER 6

sub function Soft_UART_Read(dim byref error as byte) as byte

Byte received via UART.

The function receives a byte via software UART.

This is a blocking function call (waits for start bit). Programmer can unblock it by
calling Soft_UART_Break routine.

Parameters : 

- 

error:

Error flag. Error code is returned through this variable. 

- 

0

- no error 

- 

1

- stop bit error 

- 

255

- user abort, Soft_UART_Break called 

Software UART must be initialized before using this function. See the
Soft_UART_Init routine.

dim data as byte

error 

...
' wait until data is received
do

data = Soft_Uart_Read(error)

loop until (error = 0)

' Now we can work with data:
if (data) then
...
end if