1 files changed, 0 insertions, 135 deletions

diff --git a/quantum/serial_link/protocol/byte_stuffer.c b/quantum/serial_link/protocol/byte_stuffer.c
deleted file mode 100644
index d3a91d828..000000000
--- a/quantum/serial_link/protocol/byte_stuffer.c
+++ /dev/null
@@ -1,135 +0,0 @@
-/*
-The MIT License (MIT)
-
-Copyright (c) 2016 Fred Sundvik
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
-*/
-
-#include "serial_link/protocol/byte_stuffer.h"
-#include "serial_link/protocol/frame_validator.h"
-#include "serial_link/protocol/physical.h"
-#include <stdbool.h>
-
-// This implements the "Consistent overhead byte stuffing protocol"
-// https://en.wikipedia.org/wiki/Consistent_Overhead_Byte_Stuffing
-// http://www.stuartcheshire.org/papers/COBSforToN.pdf
-
-typedef struct byte_stuffer_state {
-    uint16_t next_zero;
-    uint16_t data_pos;
-    bool     long_frame;
-    uint8_t  data[MAX_FRAME_SIZE];
-} byte_stuffer_state_t;
-
-static byte_stuffer_state_t states[NUM_LINKS];
-
-void init_byte_stuffer_state(byte_stuffer_state_t* state) {
-    state->next_zero  = 0;
-    state->data_pos   = 0;
-    state->long_frame = false;
-}
-
-void init_byte_stuffer(void) {
-    int i;
-    for (i = 0; i < NUM_LINKS; i++) {
-        init_byte_stuffer_state(&states[i]);
-    }
-}
-
-void byte_stuffer_recv_byte(uint8_t link, uint8_t data) {
-    byte_stuffer_state_t* state = &states[link];
-    // Start of a new frame
-    if (state->next_zero == 0) {
-        state->next_zero  = data;
-        state->long_frame = data == 0xFF;
-        state->data_pos   = 0;
-        return;
-    }
-
-    state->next_zero--;
-    if (data == 0) {
-        if (state->next_zero == 0) {
-            // The frame is completed
-            if (state->data_pos > 0) {
-                validator_recv_frame(link, state->data, state->data_pos);
-            }
-        } else {
-            // The frame is invalid, so reset
-            init_byte_stuffer_state(state);
-        }
-    } else {
-        if (state->data_pos == MAX_FRAME_SIZE) {
-            // We exceeded our maximum frame size
-            // therefore there's nothing else to do than reset to a new frame
-            state->next_zero  = data;
-            state->long_frame = data == 0xFF;
-            state->data_pos   = 0;
-        } else if (state->next_zero == 0) {
-            if (state->long_frame) {
-                // This is part of a long frame, so continue
-                state->next_zero  = data;
-                state->long_frame = data == 0xFF;
-            } else {
-                // Special case for zeroes
-                state->next_zero               = data;
-                state->data[state->data_pos++] = 0;
-            }
-        } else {
-            state->data[state->data_pos++] = data;
-        }
-    }
-}
-
-static void send_block(uint8_t link, uint8_t* start, uint8_t* end, uint8_t num_non_zero) {
-    send_data(link, &num_non_zero, 1);
-    if (end > start) {
-        send_data(link, start, end - start);
-    }
-}
-
-void byte_stuffer_send_frame(uint8_t link, uint8_t* data, uint16_t size) {
-    const uint8_t zero = 0;
-    if (size > 0) {
-        uint16_t num_non_zero = 1;
-        uint8_t* end          = data + size;
-        uint8_t* start        = data;
-        while (data < end) {
-            if (num_non_zero == 0xFF) {
-                // There's more data after big non-zero block
-                // So send it, and start a new block
-                send_block(link, start, data, num_non_zero);
-                start        = data;
-                num_non_zero = 1;
-            } else {
-                if (*data == 0) {
-                    // A zero encountered, so send the block
-                    send_block(link, start, data, num_non_zero);
-                    start        = data + 1;
-                    num_non_zero = 1;
-                } else {
-                    num_non_zero++;
-                }
-                ++data;
-            }
-        }
-        send_block(link, start, data, num_non_zero);
-        send_data(link, &zero, 1);
-    }
-}