Mikroelektronika MIKROE-724 データシート

mikroBasic PRO for dsPIC30/33 and PIC24

MikroElektronika

443

RS485Slave_Init

sub procedure RS485Slave_Init(dim slave_address as byte)

Description Initializes MCU as a Slave for RS-485 communication.
Parameters - 

Slave_address

: Slave address 

Nothing.

Global variables: 

- 

RS485_rxtx_pin

 - this pin is connected to RE/DE input of RS-485 transceiver(see schematic at 

the bottom of this page). RE/DE signal controls RS-485 transceiver operation mode. Valid values: 

1

 

(for transmitting) and 

0

 (for receiving 

- 

RS485_rxtx_pin_direction

 - direction of the RS-485 Transmit/Receive pin. 

must be defined before using this routine. 

UART HW module needs to be initialized. See UARTx_Init.

Initialize MCU as a Slave with address 160:

dim RS485_rxtx_pin as sbit  at RF2_bit         

dim RS485_rxtx_pin_direction as sbit  at TRISF2_bit

...

UART1_Init(9600)         ‘ initialize UART1 module

RS485Slave_Init(160)       ‘ intialize MCU as a Slave for RS-485 communication 

None