diff --git a/master/master/lib/logger.c b/master/master/lib/logger.c
--- a/master/master/lib/logger.c
+++ b/master/master/lib/logger.c
@@ -16,35 +16,6 @@
 #include "logger.h"
 
 /* 
-	//console prompts and responses
- * I implemented an example application providing a simple command prompt which is accessible
- * via the UART at 9600 Baud. With commands similiar to the Unix shell you can browse different
- * directories, read and write files, create new ones and delete them again. Not all commands are
- * available in all software configurations.
- * - <tt>cat \<file\></tt>\n
- *   Writes a hexdump of \<file\> to the terminal.
- * - <tt>cd \<directory\></tt>\n
- *   Changes current working directory to \<directory\>.
- * - <tt>disk</tt>\n
- *   Shows card manufacturer, status, filesystem capacity and free storage space.
- * - <tt>init</tt>\n
- *   Reinitializes and reopens the memory card.
- * - <tt>ls</tt>\n
- *   Shows the content of the current directory.
- * - <tt>mkdir \<directory\></tt>\n
- *   Creates a directory called \<directory\>.
- * - <tt>mv \<file\> \<file_new\></tt>\n
- *   Renames \<file\> to \<file_new\>.
- * - <tt>rm \<file\></tt>\n
- *   Deletes \<file\>.
- * - <tt>sync</tt>\n
- *   Ensures all buffered data is written to the card.
- * - <tt>touch \<file\></tt>\n
- *   Creates \<file\>.
- * - <tt>write \<file\> \<offset\></tt>\n
- *   Writes text to \<file\>, starting from \<offset\>. The text is read
- *   from the UART, line by line. Finish with an empty line.
- 
 	//config edits
   * By changing the MCU* variables in the Makefile, you can use other Atmel
   * microcontrollers or different clock speeds. You might also want to change
@@ -169,7 +140,7 @@ void logger_setup()
 				/* write text to file !! */
 				if(fat_write_file(fd, (uint8_t*) buffer, data_len) != data_len)
 				{
-					uart_puts_p(PSTR("error writing to file\n"));
+					//uart_puts_p(PSTR("error writing to file\n"));
 					break;
 				}
 			}
diff --git a/master/master/lib/sd/sd_raw.c b/master/master/lib/sd/sd_raw.c
--- a/master/master/lib/sd/sd_raw.c
+++ b/master/master/lib/sd/sd_raw.c
@@ -11,6 +11,7 @@
 #include <string.h>
 #include <avr/io.h>
 #include "sd_raw.h"
+#include "sd_raw_config.h"
 
 /**
  * \addtogroup sd_raw MMC/SD/SDHC card raw access
@@ -184,15 +185,15 @@ uint8_t sd_raw_init()
     unselect_card();
 
     /* initialize SPI with lowest frequency; max. 400kHz during identification mode of card */
-    SPCR = (0 << SPIE) | /* SPI Interrupt Enable */
-           (1 << SPE)  | /* SPI Enable */
-           (0 << DORD) | /* Data Order: MSB first */
-           (1 << MSTR) | /* Master mode */
-           (0 << CPOL) | /* Clock Polarity: SCK low when idle */
-           (0 << CPHA) | /* Clock Phase: sample on rising SCK edge */
-           (1 << SPR1) | /* Clock Frequency: f_OSC / 128 */
-           (1 << SPR0);
-    SPSR &= ~(1 << SPI2X); /* No doubled clock frequency */
+    SPCR0 = (0 << SPIE0) | /* SPI Interrupt Enable */
+           (1 << SPE0)  | /* SPI Enable */
+           (0 << DORD0) | /* Data Order: MSB first */
+           (1 << MSTR0) | /* Master mode */
+           (0 << CPOL0) | /* Clock Polarity: SCK low when idle */
+           (0 << CPHA0) | /* Clock Phase: sample on rising SCK edge */
+           (1 << SPR10) | /* Clock Frequency: f_OSC / 128 */
+           (1 << SPR00);
+    SPSR0 &= ~(1 << SPI2X0); /* No doubled clock frequency */
 
     /* initialization procedure */
     sd_raw_card_type = 0;
@@ -314,8 +315,8 @@ uint8_t sd_raw_init()
     unselect_card();
 
     /* switch to highest SPI frequency possible */
-    SPCR &= ~((1 << SPR1) | (1 << SPR0)); /* Clock Frequency: f_OSC / 4 */
-    SPSR |= (1 << SPI2X); /* Doubled Clock Frequency: f_OSC / 2 */
+    SPCR0 &= ~((1 << SPR10) | (1 << SPR00)); /* Clock Frequency: f_OSC / 4 */
+    SPSR0 |= (1 << SPI2X0); /* Doubled Clock Frequency: f_OSC / 2 */
 
 #if !SD_RAW_SAVE_RAM
     /* the first block is likely to be accessed first, so precache it here */
@@ -361,10 +362,10 @@ uint8_t sd_raw_locked()
  */
 void sd_raw_send_byte(uint8_t b)
 {
-    SPDR = b;
+    SPDR0 = b;
     /* wait for byte to be shifted out */
-    while(!(SPSR & (1 << SPIF)));
-    SPSR &= ~(1 << SPIF);
+    while(!(SPSR0 & (1 << SPIF0)));
+    SPSR0 &= ~(1 << SPIF0);
 }
 
 /**
@@ -377,11 +378,11 @@ void sd_raw_send_byte(uint8_t b)
 uint8_t sd_raw_rec_byte()
 {
     /* send dummy data for receiving some */
-    SPDR = 0xff;
-    while(!(SPSR & (1 << SPIF)));
-    SPSR &= ~(1 << SPIF);
+    SPDR0 = 0xff;
+    while(!(SPSR0 & (1 << SPIF0)));
+    SPSR0 &= ~(1 << SPIF0);
 
-    return SPDR;
+    return SPDR0;
 }
 
 /**
diff --git a/master/master/lib/sd/sd_raw_config.h b/master/master/lib/sd/sd_raw_config.h
--- a/master/master/lib/sd/sd_raw_config.h
+++ b/master/master/lib/sd/sd_raw_config.h
@@ -106,12 +106,22 @@ extern "C"
 
     #define select_card() PORTB &= ~(1 << PORTB0)
     #define unselect_card() PORTB |= (1 << PORTB0)
+#elif defined(__AVR_ATmega164P__) || \
+	  defined(__AVR_ATmega324P__) || \
+	  defined(__AVR_ATmega664P__)
+    #define configure_pin_mosi() DDRB |= (1 << DDRB5) //PB5
+    #define configure_pin_sck() DDRB |= (1 << DDRB7) //PB7
+    #define configure_pin_ss() DDRB |= (1 << DDRB0) //PB0 - custom pin
+    #define configure_pin_miso() DDRB &= ~(1 << DDRB6) //PB6
+	
+    #define select_card() PORTB &= ~(1 << PORTB0)
+    #define unselect_card() PORTB |= (1 << PORTB0)
 #else
-    //#error "no sd/mmc pin mapping available!" //commented out due to build error ??
+    #error "no sd/mmc pin mapping available!" //sends error if micro not specified
 #endif
 
-#define configure_pin_available() DDRC &= ~(1 << DDC4)
-#define configure_pin_locked() DDRC &= ~(1 << DDC5)
+#define configure_pin_available() DDRC &= ~(1 << DDRC4)
+#define configure_pin_locked() DDRC &= ~(1 << DDRC5)
 
 #define get_pin_available() (PINC & (1 << PINC4))
 #define get_pin_locked() (PINC & (1 << PINC5))