Subversion Repositories usb_nand_reader

#line 1 "H:/MINI32/MINI-32 Examples/MINI-32 mikroC PRO for PIC32 Examples/MINI32_NAND_Controller/NandDataLine.c"
#line 1 "h:/mini32/mini-32 examples/mini-32 mikroc pro for pic32 examples/mini32_nand_controller/nanddataline.h"







void init_nand_data_line();
void init_nand_control_line();
void data_line_write_byte(unsigned char b);
unsigned char data_line_read_byte();
#line 5 "H:/MINI32/MINI-32 Examples/MINI-32 mikroC PRO for PIC32 Examples/MINI32_NAND_Controller/NandDataLine.c"
sbit nand_b0 at LATE2_bit;
sbit nand_b1 at LATE3_bit;
sbit nand_b2 at LATG7_bit;
sbit nand_b3 at LATG8_bit;
sbit nand_b4 at LATF5_bit;
sbit nand_b5 at LATF4_bit;
sbit nand_b6 at LATE4_bit;
sbit nand_b7 at LATE5_bit;


void init_nand_data_line()
{
 TRISE = 0;
 TRISF = 0;
 TRISG = 0;

 LATE = 0;
 LATF = 0;
 LATG = 0;

 nand_b0 = 0;
 nand_b1 = 0;
 nand_b2 = 0;
 nand_b3 = 0;
 nand_b4 = 0;
 nand_b5 = 0;
 nand_b6 = 0;
 nand_b7 = 0;
}


int data_line_last_op =  2 ;

void data_line_write_byte(unsigned char b)
{
 if(data_line_last_op !=  1 )
 {
 TRISE2_bit = 0; TRISE3_bit = 0; TRISE4_bit = 0; TRISE5_bit = 0;
 TRISF4_bit = 0; TRISF5_bit = 0;
 TRISG7_bit = 0; TRISG8_bit = 0;
 data_line_last_op =  1 ;
 }
 nand_b0 = (b) & 1;
 nand_b1 = (b >> 1) & 1;
 nand_b2 = (b >> 2) & 1;
 nand_b3 = (b >> 3) & 1;
 nand_b4 = (b >> 4) & 1;
 nand_b5 = (b >> 5) & 1;
 nand_b6 = (b >> 6) & 1;
 nand_b7 = (b >> 7) & 1;
 asm NOP;
 asm NOP;
 asm NOP;
}


unsigned char data_line_read_byte()
{
 unsigned char d = 0;
 if(data_line_last_op !=  0 )
 {
 TRISE2_bit = 1; TRISE3_bit = 1; TRISE4_bit = 1; TRISE5_bit = 1;
 TRISF4_bit = 1; TRISF5_bit = 1;
 TRISG7_bit = 1; TRISG8_bit = 1;
 data_line_last_op =  0 ;
 }
 d |= (unsigned char)PORTE.B2;
 d |= ((unsigned char)PORTE.B3 << 1);
 d |= ((unsigned char)PORTG.B7 << 2);
 d |= ((unsigned char)PORTG.B8 << 3);
 d |= ((unsigned char)PORTF.B5 << 4);
 d |= ((unsigned char)PORTF.B4 << 5);
 d |= ((unsigned char)PORTE.B4 << 6);
 d |= ((unsigned char)PORTE.B5 << 7);
 return d;
}