1 files changed, 0 insertions, 103 deletions
diff --git a/arduino/ace_old/link.c b/arduino/ace_old/link.c
deleted file mode 100644
index 408e14e..0000000
--- a/arduino/ace_old/link.c
+++ /dev/null
@@ -1,103 +0,0 @@
-#include "link.h"
-#include "physical.h"
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <stdbool.h>
-
-typedef enum {
-  WAITING,
-  RECEIVING,
-  ESCAPING
-} link_state;
-
-#define FRAME_ESCAPE 0x02
-#define FRAME_START 0x03
-#define FRAME_END 0x10
-
-
-void from_physical_layer(uint8_t byte) {
-  static link_state state = WAITING;
-  static uint16_t position = 0; //read position
-  static uint8_t packet_data_buffer[MAX_PACKET_SIZE];
-  static packet received = {packet_data_buffer, 0};
-  static uint8_t checksum = 0x00;
-  
-  static bool previous_exists = false;
-  static uint8_t previous_byte;
-  
-  #define start_receiving() \
-    position = 0; \
-    previous_exists = false; \
-    checksum = 0x00
-  
-  #define accept(byte) \
-    if (position >= MAX_PACKET_SIZE) {start_receiving(); return;} \
-    if (previous_exists) { \
-      packet_data_buffer[position] = previous_byte; \
-      position = position + 1; \
-      checksum = checksum ^ previous_byte; \
-      previous_byte = byte; \
-    } else { \
-      previous_byte = byte; \
-      previous_exists = true; \
-    }
-    
-
-  switch(state) {
-    case ESCAPING:
-      accept(byte);
-      state = RECEIVING;
-      break;
-      
-    case WAITING:
-      if (byte == FRAME_START) {
-        start_receiving();
-        state = RECEIVING;
-      }
-      break;
-    case RECEIVING:
-      switch(byte) {
-        case FRAME_ESCAPE:
-          state = ESCAPING;
-          break;
-        case FRAME_START:
-          start_receiving();
-          break;
-        case FRAME_END:
-          state = WAITING;
-          uint8_t sent_checksum = previous_byte;
-          if (sent_checksum == checksum) {
-            received.length = position;
-            from_link_layer(&received);
-          }
-          
-          break;
-        default:
-          accept(byte);
-          break;
-      }
-  }
-  
-  #undef accept
-  #undef start_receiving
-}
-
-void to_link_layer(packet* s) {
-  uint8_t checksum = 0x00;
-  uint8_t byte;
-  int i;
-  
-  to_physical_layer(FRAME_START);
-  for (i = 0; i < (s->length); ++i) {
-    byte = s->data[i];
-    if (byte == FRAME_START || byte == FRAME_END || byte == FRAME_ESCAPE)
-      to_physical_layer(FRAME_ESCAPE);
-    checksum = checksum ^ byte;
-    to_physical_layer(byte);
-  }
-  if (checksum == FRAME_START || checksum == FRAME_END || checksum == FRAME_ESCAPE)
-    to_physical_layer(FRAME_ESCAPE);
-  to_physical_layer(checksum);
-  to_physical_layer(FRAME_END);
-};