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Added selector SPI Speed 4/8Mhz

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This commit is contained in:
maxxir_w
2019-03-25 07:55:07 +04:00
parent 8af605422d
commit 58c7930671
7 changed files with 65 additions and 23 deletions
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20
02_m1284p_FATFS_Chang_tst/mmc_avr.c
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@@ -19,7 +19,7 @@
#include <avr/io.h>
#include "diskio.h"
#include "globals.h"
/* Port controls (Platform dependent) */
@@ -113,18 +113,24 @@ void power_on (void)
DDRB |= _BV(MOSI) | _BV(SCK) | _BV(CSN);
PORTB |= _BV(MOSI) | _BV(SCK);
#if defined(SPI_8_MHZ)
/* Enables SPI, selects "master", clock rate FCK / 2, and SPI mode 0 */
// SPI 8Mhz
/*
SPCR = _BV(SPE) | _BV(MSTR);
SPSR = _BV(SPI2X);
*/
SPSR = _BV(SPI2X); //FCK / 2 - 8Mhz
#elif defined (SPI_4_MHZ)
/* Enables SPI, selects "master", clock rate FCK / 4, and SPI mode 0 */
// SPI 4Mhz
SPCR = _BV(SPE) | _BV(MSTR);
SPSR = 0x0;
SPSR = 0x0; //FCK / 4 - 4Mhz
#else
/* Enables SPI, selects "master", clock rate FCK / 4, and SPI mode 0 */
// SPI 4Mhz
SPCR = _BV(SPE) | _BV(MSTR);
SPSR = 0x0; //FCK / 4 - 4Mhz
#endif
}
static