1 files changed, 0 insertions, 178 deletions
diff --git a/keyboards/nullbitsco/nibble/remote_kb.c b/keyboards/nullbitsco/nibble/remote_kb.c
deleted file mode 100644
index 7a914993f3..0000000000
--- a/keyboards/nullbitsco/nibble/remote_kb.c
+++ /dev/null
@@ -1,178 +0,0 @@
-/* Copyright 2020 Jay Greco
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-/*
-Remote keyboard is an experimental feature that allows for connecting another
-keyboard, macropad, numpad, or accessory without requiring an additional USB connection.
-The "remote keyboard" forwards its keystrokes using UART serial over TRRS. Dynamic VUSB 
-detect allows the keyboard automatically switch to host or remote mode depending on
-which is connected to the USB port.
-
-Possible functionality includes the ability to send data from the host to the remote using
-a reverse link, allowing for LED sync, configuration, and more data sharing between devices.
-This will require a new communication protocol, as the current one is limited.
-*/
-
-#include "remote_kb.h"
-#include "uart.h"
-
-uint8_t
- msg[UART_MSG_LEN],
- msg_idx = 0;
-
-bool
- is_host = true;
-
-// Private functions
-
-static bool vbus_detect(void) {
-  #if defined(__AVR_ATmega32U4__)
-    //returns true if VBUS is present, false otherwise.
-    USBCON |= (1 << OTGPADE); //enables VBUS pad
-    _delay_us(10);
-    return (USBSTA & (1<<VBUS));  //checks state of VBUS
-  #else
-    #error vbus_detect is not implemented for this architecure!
-  #endif
-}
-
-static uint8_t chksum8(const unsigned char *buf, size_t len) {
-  unsigned int sum;
-  for (sum = 0 ; len != 0 ; len--)
-    sum += *(buf++);
-  return (uint8_t)sum;
-}
-
-static void send_msg(uint16_t keycode, bool pressed) {
-  msg[IDX_PREAMBLE] = UART_PREAMBLE;
-  msg[IDX_KCLSB] = (keycode & 0xFF);
-  msg[IDX_KCMSB] = (keycode >> 8) & 0xFF;
-  msg[IDX_PRESSED] = pressed;
-  msg[IDX_CHECKSUM] = chksum8(msg, UART_MSG_LEN-1);
-
-  for (int i=0; i<UART_MSG_LEN; i++) {
-    uart_putchar(msg[i]);
-  }
-}
-
-static void print_message_buffer(void) {
-  for (int i=0; i<UART_MSG_LEN; i++) {
-    dprintf("msg[%u]: %u\n", i, msg[i]);
-  }
-}
-
-static void process_uart(void) {
-  uint8_t chksum = chksum8(msg, UART_MSG_LEN-1);
-  if (msg[IDX_PREAMBLE] != UART_PREAMBLE || msg[IDX_CHECKSUM] != chksum) {
-     dprintf("UART checksum mismatch!\n");
-     print_message_buffer();
-     dprintf("calc checksum: %u\n", chksum);
-  } else {
-    uint16_t keycode = (uint16_t)msg[IDX_KCLSB] | ((uint16_t)msg[IDX_KCMSB] << 8);
-    bool pressed = (bool)msg[IDX_PRESSED];
-    if (IS_RM_KC(keycode)) {
-      keyrecord_t record;
-      record.event.pressed = pressed;
-      if (pressed) dprintf("Remote macro: press [%u]\n", keycode);
-      else dprintf("Remote macro: release [%u]\n", keycode);
-      process_record_user(keycode, &record);
-    } else {
-      if (pressed) {
-        dprintf("Remote: press [%u]\n", keycode);
-        register_code(keycode);
-    } else {
-        dprintf("Remote: release [%u]\n", keycode);
-        unregister_code(keycode);
-      }
-    }
-  }
-}
-
-static void get_msg(void) {
-  while (uart_available()) {
-    msg[msg_idx] = uart_getchar();
-    dprintf("idx: %u, recv: %u\n", msg_idx, msg[msg_idx]);
-    if (msg_idx == 0 && (msg[msg_idx] != UART_PREAMBLE)) {
-      dprintf("Byte sync error!\n");
-      msg_idx = 0;
-    } else if (msg_idx == (UART_MSG_LEN-1)) {
-      process_uart();
-      msg_idx = 0;
-    } else {
-      msg_idx++;
-    }
-  }
-}
-
-static void handle_host_incoming(void) {
-  get_msg();
-}
-
-static void handle_host_outgoing(void) {
-  // for future reverse link use
-}
-
-static void handle_remote_incoming(void) {
-  // for future reverse link use
-}
-
-static void handle_remote_outgoing(uint16_t keycode, keyrecord_t *record) {
-  if (IS_HID_KC(keycode) || IS_RM_KC(keycode)) {
-    dprintf("Remote: send [%u]\n", keycode);
-    send_msg(keycode, record->event.pressed);
-  }
-}
-
-// Public functions
-
-void matrix_init_remote_kb(void) {
-  uart_init(SERIAL_UART_BAUD);
-  is_host = vbus_detect();
-}
-
-void process_record_remote_kb(uint16_t keycode, keyrecord_t *record) {
-  #if defined (KEYBOARD_HOST)
-  handle_host_outgoing();
-
-  #elif defined(KEYBOARD_REMOTE)
-  handle_remote_outgoing(keycode, record);
-
-  #else //auto check with VBUS
-  if (is_host) {
-    handle_host_outgoing();
-  }
-  else {
-    handle_remote_outgoing(keycode, record);
-  }
-  #endif
-}
-
-void matrix_scan_remote_kb(void) {
-  #if defined(KEYBOARD_HOST)
-  handle_host_incoming();
-
-  #elif defined (KEYBOARD_REMOTE)
-  handle_remote_incoming();
-
-  #else //auto check with VBUS
-  if (is_host) {
-    handle_host_incoming();
-  }
-  else {
-    handle_remote_incoming();
-  }
-  #endif
-}