Mikroelektronika MIKROE-724 データシート

mikroBasic PRO for dsPIC30/33 and PIC24

MikroElektronika

441

Library Dependency Tree

dim  RS485_rxtx_pin  as  sbit  sfr 

Control RS-485 Transmit/Receive 

operation mode

dim  RS485_rxtx_pin  as  sbit  at  RF2_

bit

dim  RS485_rxtx_pin_direction as 

Direction of the RS-485 Transmit/

Receive pin

dim RS485_rxtx_pin_direction as sbit 

at TRISF2_bit

External dependencies of RS-485 Library

Library Routines

 

- RS485Master_Init 

 

- RS485Master_Receive 

 

- RS485Master_Send 

 

- RS485Slave_Init 

 

- RS485Slave_Receive 

 

- RS485Slave_Send 

RS485Master_Init

sub procedure RS485Master_Init()

Description Initializes MCU as a Master for RS-485 communication.
Parameters None.
Returns

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. 

- 

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.

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

RS485Master_Init()  ‘ intialize MCU as a Master for RS-485 communication

None