Mikroelektronika MIKROE-350 データシート

192

- SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

CHAPTER 6

sub procedure Cf_Init()

Nothing.

Initializes ports appropriately for communication with CF card.

Global variables : 

- 

CF_Data_Port

: Compact Flash data port 

- 

CF_RDY

: Ready signal line 

- 

CF_WE

: Write enable signal line 

- 

CF_OE

: Output enable signal line 

- 

CF_CD1

: Chip detect signal line 

- 

CF_CE1

: Enable signal line 

- 

CF_A2

: Address pin 2 

- 

CF_A1

: Address pin 1 

- 

CF_A0

: Address pin 0 

- 

CF_Data_Port_direction

: Direction of the Compact Flash data direction port 

- 

CF_RDY_direction

: Direction of the Ready pin 

- 

CF_WE_direction

: Direction of the Write enable pin 

- 

CF_OE_direction

: Direction of the Output enable pin 

- 

CF_CD1_direction

: Direction of the Chip detect pin 

- 

CF_CE1_direction

: Direction of the Chip enable pin 

- 

CF_A2_direction

: Direction of the Address 2 pin 

- 

CF_A1_direction

: Direction of the Address 1 pin 

- 

CF_A0_direction

: Direction of the Address 0 pin 

must be defined before using this function.

' set compact flash pinout 
dim CF_Data_Port as byte at PORTD
dim Cf_Data_Port_Direction as byte at DDRD

dim CF_RDY as sbit at PINB.B7
dim CF_WE  as sbit at PORTB.B6
dim CF_OE  as sbit at PORTB.B5
dim CF_CD1 as sbit at PINB.B4
dim CF_CE1 as sbit at PORTB.B3
dim CF_A2  as sbit at PORTB.B2
dim CF_A1  as sbit at PORTB.B1
dim CF_A0  as sbit at PORTB.B0

dim CF_RDY_direction as sbit at DDRB.B7
dim CF_WE_direction  as sbit at DDRB.B6
dim CF_OE_direction  as sbit at DDRB.B5
dim CF_CD1_direction as sbit at DDRB.B4
dim CF_CE1_direction as sbit at DDRB.B3
dim CF_A2_direction  as sbit at DDRB.B2
dim CF_A1_direction  as sbit at DDRB.B1
dim CF_A0_direction  as sbit at DDRB.B0
' end of cf pinout

'Init CF
Cf_Init()