Added TFP-client project (not working yet)

21_m1284p_WIZNET_TFTP_client_FATFS/spi.c

@@ -0,0 +1,50 @@
+#include <avr/io.h>
+#include "spi.h"
+#include "globals.h"
+
+/*
+ * Initialize SPI bus.
+ */
+
+//~ // From working SPI ENC28J60 driver
+//~ #define ENC28J60_CONTROL_PORT   PORTB
+//~ #define ENC28J60_CONTROL_DDR    DDRB
+//~ 
+//~ #define ENC28J60_CONTROL_CS PORTB6
+//~ #define ENC28J60_CONTROL_SO PORTB3
+//~ #define ENC28J60_CONTROL_SI PORTB2
+//~ #define ENC28J60_CONTROL_SCK PORTB1
+//~ #define ENC28J60_CONTROL_SS PORTB0
+//~ 
+//~ // set CS to 0 = active
+//~ #define CSACTIVE ENC28J60_CONTROL_PORT&=~(1<<ENC28J60_CONTROL_CS)
+//~ // set CS to 1 = passive
+//~ #define CSPASSIVE ENC28J60_CONTROL_PORT|=(1<<ENC28J60_CONTROL_CS)
+//
+//~ #define waitspi() while(!(SPSR&(1<<SPIF)))
+ 
+
+void
+spi_init(void)
+{
+  // CS PIN for FLASH
+  DDRB	|= _BV(WIZNET_CS); // CS to OUT && Disable
+  SPI_WIZNET_DISABLE();
+  
+  /* Initalize ports for communication with SPI units. */
+  /* CSN=SS and must be output when master! */
+  DDRB  |= _BV(MOSI) | _BV(SCK) | _BV(CSN);
+  PORTB |= _BV(MOSI) | _BV(SCK);
+ 
+  /* Enables SPI, selects "master", clock rate FCK / 4 - 4Mhz, and SPI mode 0 */
+  SPCR = _BV(SPE) | _BV(MSTR);
+#if defined(SPI_8_MHZ)
+  SPSR = _BV(SPI2X); //FCK / 2 - 8Mhz
+#elif defined (SPI_4_MHZ)
+  SPSR = 0x0; //FCK / 4 - 4Mhz
+#else
+  SPSR = 0x0; //FCK / 4 - 4Mhz
+#endif
+
+
+}