Updated SPI code driver

17_m1284p_BTLD_WIZNET_HTTPD_FTPD_FATFS_SDCARD/globals.h

@@ -71,6 +71,10 @@ extern const char ftpd_pass[];
 
 #define IP_WORK
 
+//SPI CLOCK 4 or 8Mhz
+#define SPI_4_MHZ
+//#define SPI_8_MHZ
+
 extern unsigned long millis(void);
 extern int freeRam (void);
 extern char uart0_receive(void);

17_m1284p_BTLD_WIZNET_HTTPD_FTPD_FATFS_SDCARD/mmc_avr.c

@@ -19,7 +19,7 @@
 
 #include <avr/io.h>
 #include "diskio.h"
-
+#include "globals.h"
 
 /* Port controls  (Platform dependent) */
 
@@ -113,17 +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

17_m1284p_BTLD_WIZNET_HTTPD_FTPD_FATFS_SDCARD/spi.c

@@ -1,45 +1,6 @@
-/*
- * Copyright (c) 2007, Swedish Institute of Computer Science
- * All rights reserved. 
- *
- * Redistribution and use in source and binary forms, with or without 
- * modification, are permitted provided that the following conditions 
- * are met: 
- * 1. Redistributions of source code must retain the above copyright 
- *    notice, this list of conditions and the following disclaimer. 
- * 2. Redistributions in binary form must reproduce the above copyright 
- *    notice, this list of conditions and the following disclaimer in the 
- *    documentation and/or other materials provided with the distribution. 
- * 3. Neither the name of the Institute nor the names of its contributors 
- *    may be used to endorse or promote products derived from this software 
- *    without specific prior written permission. 
- *
- * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
- * SUCH DAMAGE. 
- *
- */
-
 #include <avr/io.h>
 #include "spi.h"
-//#include "contiki-conf.h"
+#include "globals.h"
-
-/*
- * On the Tmote sky access to I2C/SPI/UART0 must always be
- * exclusive. Set spi_busy so that interrupt handlers can check if
- * they are allowed to use the bus or not. Only the CC2420 radio needs
- * this in practice.
- * 
- */
-unsigned char spi_busy = 0;
 
 /*
  * Initialize SPI bus.
@@ -77,8 +38,13 @@ spi_init(void)
  
   /* Enables SPI, selects "master", clock rate FCK / 4 - 4Mhz, and SPI mode 0 */
   SPCR = _BV(SPE) | _BV(MSTR);
-  //SPSR = 0x0; //FCK / 4 - 4Mhz
+#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
 
 
 }

17_m1284p_BTLD_WIZNET_HTTPD_FTPD_FATFS_SDCARD/spi.h

@@ -1,41 +1,3 @@
-/*
- * Copyright (c) 2010, Swedish Institute of Computer Science.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the Institute nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- */
-
-/**
- * \file
- *         Basic SPI macros
- * \author
- *         Joakim Eriksson <joakime@sics.se>
- *         Niclas Finne <nfi@sics.se>
- */
-
 #ifndef SPI_H_
 #define SPI_H_
 
@@ -92,8 +54,6 @@
 #define SPI_WAITFORTx_ENDED()
 #endif /* SPI_WAITFORTxREADY */
 
-extern unsigned char spi_busy;
-
 void spi_init(void);
 
 /* Write one character to SPI */