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rename regs

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This commit is contained in:
David Voswinkel 2009-08-06 09:04:07 +02:00
parent e1567d81da
commit f4d5451fec
2 changed files with 18 additions and 18 deletions
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26
avr/usbload/mmc.c
View File

@ -5,21 +5,21 @@ uint8_t mmc_init()
uint16_t Timeout = 0, i;
// Konfiguration des Ports an der die MMC/SD-Karte angeschlossen wurde
DDRB |= ((1 << MMC_DO) | (1 << MMC_CS) | (1 << MMC_CLK));
DDRB &= ~(1 << MMC_DI);
PORTB |= ((1 << MMC_DO) | (1 << MMC_DI) | (1 << MMC_CS));
MMC_REG |= ((1 << MMC_DO) | (1 << MMC_CS) | (1 << MMC_CLK));
MMC_REG &= ~(1 << MMC_DI);
MMC_WRITE |= ((1 << MMC_DO) | (1 << MMC_DI) | (1 << MMC_CS));
// Wartet eine kurze Zeit
_delay_ms(20);
// Initialisiere MMC/SD-Karte in den SPI-Mode
for (i = 0; i < 250; i++) {
PORTB ^= (1 << MMC_CLK);
MMC_WRITE ^= (1 << MMC_CLK);
_delay_us(4);
}
PORTB &= ~(1 << MMC_CLK);
MMC_WRITE &= ~(1 << MMC_CLK);
_delay_us(10);
PORTB &= ~(1 << MMC_CS);
MMC_WRITE &= ~(1 << MMC_CS);
_delay_us(3);
// Sendet Commando CMD0 an MMC/SD-Karte
@ -77,7 +77,7 @@ uint8_t mmc_read_byte(void)
uint8_t Byte = 0, j;
for (j = 0; j < 8; j++) {
Byte = (Byte << 1);
PORTB |= (1 << MMC_CLK);
MMC_WRITE |= (1 << MMC_CLK);
_delay_us(4);
if (PINB & (1 << MMC_DI)) {
Byte |= 1;
@ -86,7 +86,7 @@ uint8_t mmc_read_byte(void)
else {
Byte &= ~1;
}
PORTB &= ~(1 << MMC_CLK);
MMC_WRITE &= ~(1 << MMC_CLK);
_delay_us(4);
}
return (Byte);
@ -100,19 +100,19 @@ void mmc_write_byte(uint8_t Byte)
uint8_t i;
for (i = 0; i < 8; i++) {
if (Byte & 0x80) {
PORTB |= (1 << MMC_DO);
MMC_WRITE |= (1 << MMC_DO);
}
else {
PORTB &= ~(1 << MMC_DO);
MMC_WRITE &= ~(1 << MMC_DO);
}
Byte = (Byte << 1);
PORTB |= (1 << MMC_CLK);
MMC_WRITE |= (1 << MMC_CLK);
_delay_us(4);
PORTB &= ~(1 << MMC_CLK);
MMC_WRITE &= ~(1 << MMC_CLK);
_delay_us(4);
}
PORTB |= (1 << MMC_DO);
MMC_WRITE |= (1 << MMC_DO);
}
// ############################################################################

10
avr/usbload/mmc.h
View File

@ -4,9 +4,9 @@
#include <avr/io.h>
#define MMC_Write PORTB // Port an der die MMC/SD-Karte angeschlossen ist also des SPI
#define MMC_Read PINB
#define MMC_Direction_REG DDRB
#define MMC_WRITE PORTB // Port an der die MMC/SD-Karte angeschlossen ist also des SPI
#define MMC_READ PINB
#define MMC_REG DDRB
#define MMC_CS PB4
#define MMC_DO PB6
@ -23,10 +23,10 @@ extern uint8_t mmc_read_csd(uint8_t *);
extern uint8_t mmc_read_cid(uint8_t *);
// set MMC_Chip_Select to high (MMC/SD-Karte Inaktiv)
#define MMC_Disable() MMC_Write|= (1<<MMC_CS);
#define MMC_Disable() MMC_WRITE|= (1<<MMC_CS);
// set MMC_Chip_Select to low (MMC/SD-Karte Aktiv)
#define MMC_Enable() MMC_Write&=~(1<<MMC_CS);
#define MMC_Enable() MMC_WRITE&=~(1<<MMC_CS);
#define nop() __asm__ __volatile__ ("nop" ::)