Poppin' more cruft out the repo 8)

avr/Makefile

@@ -19,7 +19,7 @@ HEADERS_LOCAL	=
 HEADERS_BUILD	= $(HEADERS_LOCAL) \
 		  $(addprefix $(INCLUDE_PATH)/$(HEADER_SUBDIR)/,$(HEADERS))
 
-HEADERS		= avr/buffer.h avr/uart.h clock.h command.h link.h
+HEADERS		= avr/buffer.h avr/uart.h link.h
 OBJS		= main.o uart.o
 
 IMAGE_NAME	= tabby

avr/main.c

@@ -4,10 +4,7 @@
 #include <avr/interrupt.h>
 #include <avr/sleep.h>
 
-#include <tabby/clock.h>
-#include <tabby/command.h>
 #include <tabby/printer.h>
-
 #include <tabby/avr/uart.h>
 
 static volatile tabby_printer_packet header = {
@@ -23,93 +20,78 @@ static volatile uint16_t i = 0,
  * SPI byte receipt interrupt vector
  */
 ISR(SPI_STC_vect) {
-    uint8_t value = SPDR;
+    uint8_t in  = SPDR,
+            out = 0x00;
 
-    uart_putchar(value, NULL);
+    uart_putchar(in, NULL);
 
     switch (i) {
         case 0: {
-            if (value == 0x88) {
-                header.data[0] = value;
+            if (in == 0x88) {
+                header.data[0] = in;
                 i++;
 
                 b = 0;
             }
 
-            SPDR = 0;
-
             break;
         }
 
         case 1: {
-            if (value == 0x33) {
-                header.data[1] = value;
+            if (in == 0x33) {
+                header.data[1] = in;
                 i++;
             } else {
                 i = 0;
             }
 
-            SPDR = 0;
-
             break;
         }
 
         case 2: {
-            header.type = value;
+            header.type = in;
             i++;
-            SPDR = 0;
 
             break;
         }
 
         case 3: {
-            header.compression = value;
+            header.compression = in;
             i++;
-            SPDR = 0;
 
             break;
         }
 
         case 4: {
-            header.size = value;
+            header.size = in;
             i++;
-            SPDR = 0;
 
             break;
         }
 
         case 5: {
-            header.size |= value << 8;
+            header.size |= in << 8;
             i++;
-            SPDR = 0;
 
             break;
         }
 
         default: {
-            if (b < header.size) {
+            if (b <= header.size) {
                 b++;
-
-                SPDR = 0;
-            } else if (b == header.size) {
-                b++;
-
-                SPDR = 0;
             } else if (b == header.size + 1) {
                 b++;
 
-                SPDR = 0x81;
+                out = 0x81;
             } else if (b == header.size + 2) {
                 b++;
-
-                SPDR = 0;
             } else if (b == header.size + 3) {
                 i = 0;
-
-                SPDR = 0;
             }
         }
     }
+
+    SPDR = out;
 }
 
 static void setup_clock_external() {

bin/main.c

@@ -1,8 +1,9 @@
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <stdint.h>
 #include <stdarg.h>
-#include <string.h>
+#include <unistd.h>
 #include <errno.h>
 
 #include <tabby/link.h>

include/tabby/clock.h

@@ -1,16 +0,0 @@
-#ifndef _TABBY_CLOCK_H
-#define _TABBY_CLOCK_H
-
-typedef enum {
-    TABBY_CLOCK_SOURCE_INTERNAL = 0x01,
-    TABBY_CLOCK_SOURCE_EXTERNAL = 0x02
-} tabby_clock_source;
-
-typedef enum {
-    TABBY_CLOCK_SPEED_8192HZ   = 0x01,
-    TABBY_CLOCK_SPEED_16384HZ  = 0x02,
-    TABBY_CLOCK_SPEED_262144HZ = 0x03,
-    TABBY_CLOCK_SPEED_524288HZ = 0x04
-} tabby_clock_speed;
-
-#endif /* _TABBY_CLOCK_H */

include/tabby/command.h

@@ -1,11 +0,0 @@
-#ifndef _TABBY_COMMAND_H
-#define _TABBY_COMMAND_H
-
-typedef enum {
-    TABBY_COMMAND_NONE         = 0x00,
-    TABBY_COMMAND_SEND         = 0x01,
-    TABBY_COMMAND_CLOCK_SOURCE = 0x02,
-    TABBY_COMMAND_CLOCK_SPEED  = 0x03
-} tabby_command;
-
-#endif /* _TABBY_COMMAND_H */

include/tabby/link.h

@@ -1,16 +1,6 @@
 #ifndef _TABBY_LINK_H
 #define _TABBY_LINK_H
 
-#include <stdint.h>
-#include <string.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <termios.h>
-#include <sys/types.h>
-#include <sys/ioctl.h>
-
-#include <tabby/clock.h>
-
 #define TABBY_LINK_BAUD B57600
 
 int tabby_link_open(const char *dev);

src/link.c

@@ -1,7 +1,11 @@
 #include <stdio.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <termios.h>
 
 #include <tabby/link.h>
-#include <tabby/command.h>
 
 int tabby_link_open(const char *dev) {
     int fd;

src/printer.c

@@ -1,3 +1,7 @@
+#include <stdint.h>
+#include <string.h>
+#include <sys/types.h>
+#include <unistd.h>
 #include <errno.h>
 
 #include <tabby/link.h>