Remove legacy AVR ssd1306 driver (#17864)

8 files changed, 0 insertions, 1123 deletions

diff --git a/keyboards/dc01/left/i2c.c b/keyboards/dc01/left/i2c.c
deleted file mode 100644
index c72789403e..0000000000
--- a/keyboards/dc01/left/i2c.c
+++ /dev/null
@@ -1,159 +0,0 @@
-#include <util/twi.h>
-#include <avr/io.h>
-#include <stdlib.h>
-#include <avr/interrupt.h>
-#include <util/twi.h>
-#include <stdbool.h>
-#include "i2c.h"
-
-// Limits the amount of we wait for any one i2c transaction.
-// Since were running SCL line 100kHz (=> 10μs/bit), and each transactions is
-// 9 bits, a single transaction will take around 90μs to complete.
-//
-// (F_CPU/SCL_CLOCK)  =>  # of μC cycles to transfer a bit
-// poll loop takes at least 8 clock cycles to execute
-#define I2C_LOOP_TIMEOUT (9+1)*(F_CPU/SCL_CLOCK)/8
-
-#define BUFFER_POS_INC() (slave_buffer_pos = (slave_buffer_pos+1)%SLAVE_BUFFER_SIZE)
-
-volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];
-
-static volatile uint8_t slave_buffer_pos;
-static volatile bool slave_has_register_set = false;
-
-// Wait for an i2c operation to finish
-inline static
-void i2c_delay(void) {
-  uint16_t lim = 0;
-  while(!(TWCR & (1<<TWINT)) && lim < I2C_LOOP_TIMEOUT)
-    lim++;
-
-  // easier way, but will wait slightly longer
-  // _delay_us(100);
-}
-
-// Setup twi to run at 100kHz
-void i2c_master_init(void) {
-  // no prescaler
-  TWSR = 0;
-  // Set TWI clock frequency to SCL_CLOCK. Need TWBR>10.
-  // Check datasheets for more info.
-  TWBR = ((F_CPU/SCL_CLOCK)-16)/2;
-}
-
-// Start a transaction with the given i2c slave address. The direction of the
-// transfer is set with I2C_READ and I2C_WRITE.
-// returns: 0 => success
-//          1 => error
-uint8_t i2c_master_start(uint8_t address) {
-  TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTA);
-
-  i2c_delay();
-
-  // check that we started successfully
-  if ( (TW_STATUS != TW_START) && (TW_STATUS != TW_REP_START))
-    return 1;
-
-  TWDR = address;
-  TWCR = (1<<TWINT) | (1<<TWEN);
-
-  i2c_delay();
-
-  if ( (TW_STATUS != TW_MT_SLA_ACK) && (TW_STATUS != TW_MR_SLA_ACK) )
-    return 1; // slave did not acknowledge
-  else
-    return 0; // success
-}
-
-
-// Finish the i2c transaction.
-void i2c_master_stop(void) {
-  TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
-
-  uint16_t lim = 0;
-  while(!(TWCR & (1<<TWSTO)) && lim < I2C_LOOP_TIMEOUT)
-    lim++;
-}
-
-// Write one byte to the i2c slave.
-// returns 0 => slave ACK
-//         1 => slave NACK
-uint8_t i2c_master_write(uint8_t data) {
-  TWDR = data;
-  TWCR = (1<<TWINT) | (1<<TWEN);
-
-  i2c_delay();
-
-  // check if the slave acknowledged us
-  return (TW_STATUS == TW_MT_DATA_ACK) ? 0 : 1;
-}
-
-// Read one byte from the i2c slave. If ack=1 the slave is acknowledged,
-// if ack=0 the acknowledge bit is not set.
-// returns: byte read from i2c device
-uint8_t i2c_master_read(int ack) {
-  TWCR = (1<<TWINT) | (1<<TWEN) | (ack<<TWEA);
-
-  i2c_delay();
-  return TWDR;
-}
-
-void i2c_reset_state(void) {
-  TWCR = 0;
-}
-
-void i2c_slave_init(uint8_t address) {
-  TWAR = address << 0; // slave i2c address
-  // TWEN  - twi enable
-  // TWEA  - enable address acknowledgement
-  // TWINT - twi interrupt flag
-  // TWIE  - enable the twi interrupt
-  TWCR = (1<<TWIE) | (1<<TWEA) | (1<<TWINT) | (1<<TWEN);
-}
-
-ISR(TWI_vect);
-
-ISR(TWI_vect) {
-  uint8_t ack = 1;
-  switch(TW_STATUS) {
-    case TW_SR_SLA_ACK:
-      // this device has been addressed as a slave receiver
-      slave_has_register_set = false;
-      break;
-
-    case TW_SR_DATA_ACK:
-      // this device has received data as a slave receiver
-      // The first byte that we receive in this transaction sets the location
-      // of the read/write location of the slaves memory that it exposes over
-      // i2c.  After that, bytes will be written at slave_buffer_pos, incrementing
-      // slave_buffer_pos after each write.
-      if(!slave_has_register_set) {
-        slave_buffer_pos = TWDR;
-        // don't acknowledge the master if this memory loctaion is out of bounds
-        if ( slave_buffer_pos >= SLAVE_BUFFER_SIZE ) {
-          ack = 0;
-          slave_buffer_pos = 0;
-        }
-        slave_has_register_set = true;
-      } else {
-        i2c_slave_buffer[slave_buffer_pos] = TWDR;
-        BUFFER_POS_INC();
-      }
-      break;
-
-    case TW_ST_SLA_ACK:
-    case TW_ST_DATA_ACK:
-      // master has addressed this device as a slave transmitter and is
-      // requesting data.
-      TWDR = i2c_slave_buffer[slave_buffer_pos];
-      BUFFER_POS_INC();
-      break;
-
-    case TW_BUS_ERROR: // something went wrong, reset twi state
-      TWCR = 0;
-    default:
-      break;
-  }
-  // Reset everything, so we are ready for the next TWI interrupt
-  TWCR |= (1<<TWIE) | (1<<TWINT) | (ack<<TWEA) | (1<<TWEN);
-}
diff --git a/keyboards/dc01/left/i2c.h b/keyboards/dc01/left/i2c.h
deleted file mode 100644
index 0d93e4ecaa..0000000000
--- a/keyboards/dc01/left/i2c.h
+++ /dev/null
@@ -1,28 +0,0 @@
-#pragma once
-
-#include <stdint.h>
-
-#ifndef F_CPU
-#define F_CPU 16000000UL
-#endif
-
-#define I2C_READ 1
-#define I2C_WRITE 0
-
-#define I2C_ACK 1
-#define I2C_NACK 0
-
-#define SLAVE_BUFFER_SIZE 0x10
-
-// i2c SCL clock frequency
-#define SCL_CLOCK  400000L
-
-extern volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];
-
-void i2c_master_init(void);
-uint8_t i2c_master_start(uint8_t address);
-void i2c_master_stop(void);
-uint8_t i2c_master_write(uint8_t data);
-uint8_t i2c_master_read(int);
-void i2c_reset_state(void);
-void i2c_slave_init(uint8_t address);
diff --git a/keyboards/lets_split/keymaps/OLED_sample/config.h b/keyboards/lets_split/keymaps/OLED_sample/config.h
deleted file mode 100644
index 6aa909d284..0000000000
--- a/keyboards/lets_split/keymaps/OLED_sample/config.h
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
-This is the c configuration file for the keymap
-
-Copyright 2012 Jun Wako <wakojun@gmail.com>
-Copyright 2015 Jack Humbert
-
-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/>.
-*/
-
-#ifndef CONFIG_USER_H
-#define CONFIG_USER_H
-
-#include "../../config.h"
-
-/* Use I2C or Serial, not both */
-
-#define USE_I2C
-//#define USE_SERIAL
-
-/* Select hand configuration */
-
-#define MASTER_LEFT
-// #define MASTER_RIGHT
-// #define EE_HANDS
-#define FLIP_HALF
-
-#define SSD1306OLED
-//#define OLED_ROTATE180
-
-#define TAPPING_FORCE_HOLD
-#define TAPPING_TERM 100
-
-#ifdef SUBPROJECT_rev1
-    #include "../../rev1/config.h"
-#endif
-#ifdef SUBPROJECT_rev2
-    #include "../../rev2/config.h"
-#endif
-
-#undef RGBLED_NUM
-#define RGBLIGHT_ANIMATIONS
-#define RGBLED_NUM 6
-#define RGBLIGHT_HUE_STEP 10
-#define RGBLIGHT_SAT_STEP 17
-#define RGBLIGHT_VAL_STEP 17
-
-#endif
diff --git a/keyboards/lets_split/keymaps/OLED_sample/keymap.c b/keyboards/lets_split/keymaps/OLED_sample/keymap.c
deleted file mode 100644
index a34d5a32be..0000000000
--- a/keyboards/lets_split/keymaps/OLED_sample/keymap.c
+++ /dev/null
@@ -1,415 +0,0 @@
-#include QMK_KEYBOARD_H
-#include <LUFA/Drivers/Peripheral/TWI.h>
-#ifdef SSD1306OLED
-  #include "ssd1306.h"
-#endif
-
-extern keymap_config_t keymap_config;
-
-//Following line allows macro to read current RGB settings
-extern rgblight_config_t rgblight_config;
-
-
-// Each layer gets a name for readability, which is then used in the keymap matrix below.
-// The underscores don't mean anything - you can have a layer called STUFF or any other name.
-// Layer names don't all need to be of the same length, obviously, and you can also skip them
-// entirely and just use numbers.
-#define _QWERTY 0
-#define _COLEMAK 1
-#define _DVORAK 2
-#define _LOWER 3
-#define _RAISE 4
-#define _ADJUST 16
-
-enum custom_keycodes {
-  QWERTY = SAFE_RANGE,
-  COLEMAK,
-  DVORAK,
-  LOWER,
-  RAISE,
-  ADJUST,
-  BACKLIT,
-  RGBLED_TOGGLE,
-  RGBLED_STEP_MODE,
-  RGBLED_INCREASE_HUE,
-  RGBLED_DECREASE_HUE,
-  RGBLED_INCREASE_SAT,
-  RGBLED_DECREASE_SAT,
-  RGBLED_INCREASE_VAL,
-  RGBLED_DECREASE_VAL,
-  M_SAMPLE
-};
-
-const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
-
-/* Qwerty
- * ,-----------------------------------------------------------------------------------.
- * | Tab  |   Q  |   W  |   E  |   R  |   T  |   Y  |   U  |   I  |   O  |   P  | Bksp |
- * |------+------+------+------+------+-------------+------+------+------+------+------|
- * | Esc  |   A  |   S  |   D  |   F  |   G  |   H  |   J  |   K  |   L  |   ;  |  "   |
- * |------+------+------+------+------+------|------+------+------+------+------+------|
- * | Shift|   Z  |   X  |   C  |   V  |   B  |   N  |   M  |   ,  |   .  |   /  |Enter |
- * |------+------+------+------+------+------+------+------+------+------+------+------|
- * |Adjust| Ctrl | Alt  | GUI  |Lower |Space |Space |Raise | Left | Down |  Up  |Right |
- * `-----------------------------------------------------------------------------------'
- */
-[_QWERTY] = LAYOUT( \
-  KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_BSPC, \
-  KC_ESC,  KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, \
-  KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_ENT , \
-  ADJUST,  KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT \
-),
-
-/* Colemak
- * ,-----------------------------------------------------------------------------------.
- * | Tab  |   Q  |   W  |   F  |   P  |   G  |   J  |   L  |   U  |   Y  |   ;  | Bksp |
- * |------+------+------+------+------+-------------+------+------+------+------+------|
- * | Esc  |   A  |   R  |   S  |   T  |   D  |   H  |   N  |   E  |   I  |   O  |  "   |
- * |------+------+------+------+------+------|------+------+------+------+------+------|
- * | Shift|   Z  |   X  |   C  |   V  |   B  |   K  |   M  |   ,  |   .  |   /  |Enter |
- * |------+------+------+------+------+------+------+------+------+------+------+------|
- * |Adjust| Ctrl | Alt  | GUI  |Lower |Space |Space |Raise | Left | Down |  Up  |Right |
- * `-----------------------------------------------------------------------------------'
- */
-[_COLEMAK] = LAYOUT( \
-  KC_TAB,  KC_Q,    KC_W,    KC_F,    KC_P,    KC_G,    KC_J,    KC_L,    KC_U,    KC_Y,    KC_SCLN, KC_BSPC, \
-  KC_ESC,  KC_A,    KC_R,    KC_S,    KC_T,    KC_D,    KC_H,    KC_N,    KC_E,    KC_I,    KC_O,    KC_QUOT, \
-  KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_K,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_ENT , \
-  ADJUST,  KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT \
-),
-
-/* Dvorak
- * ,-----------------------------------------------------------------------------------.
- * | Tab  |   "  |   ,  |   .  |   P  |   Y  |   F  |   G  |   C  |   R  |   L  | Bksp |
- * |------+------+------+------+------+-------------+------+------+------+------+------|
- * | Esc  |   A  |   O  |   E  |   U  |   I  |   D  |   H  |   T  |   N  |   S  |  /   |
- * |------+------+------+------+------+------|------+------+------+------+------+------|
- * | Shift|   ;  |   Q  |   J  |   K  |   X  |   B  |   M  |   W  |   V  |   Z  |Enter |
- * |------+------+------+------+------+------+------+------+------+------+------+------|
- * |Adjust| Ctrl | Alt  | GUI  |Lower |Space |Space |Raise | Left | Down |  Up  |Right |
- * `-----------------------------------------------------------------------------------'
- */
-[_DVORAK] = LAYOUT( \
-  KC_TAB,  KC_QUOT, KC_COMM, KC_DOT,  KC_P,    KC_Y,    KC_F,    KC_G,    KC_C,    KC_R,    KC_L,    KC_BSPC, \
-  KC_ESC,  KC_A,    KC_O,    KC_E,    KC_U,    KC_I,    KC_D,    KC_H,    KC_T,    KC_N,    KC_S,    KC_SLSH, \
-  KC_LSFT, KC_SCLN, KC_Q,    KC_J,    KC_K,    KC_X,    KC_B,    KC_M,    KC_W,    KC_V,    KC_Z,    KC_ENT , \
-  ADJUST,  KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT \
-),
-
-/* Lower
- * ,-----------------------------------------------------------------------------------.
- * |   ~  |   !  |   @  |   #  |   $  |   %  |   ^  |   &  |   *  |   (  |   )  | Bksp |
- * |------+------+------+------+------+-------------+------+------+------+------+------|
- * | Del  |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |   _  |   +  |     |    \  |  |   |
- * |------+------+------+------+------+------|------+------+------+------+------+------|
- * |      |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |ISO ~ |ISO | |      |      |Enter |
- * |------+------+------+------+------+------+------+------+------+------+------+------|
- * |      |      |      |      |      |             |      | Next | Vol- | Vol+ | Play |
- * `-----------------------------------------------------------------------------------'
- */
-[_LOWER] = LAYOUT( \
-  KC_TILD, KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_BSPC, \
-  KC_DEL,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_UNDS, KC_PLUS, KC_LCBR, KC_RCBR, KC_PIPE, \
-  _______, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,S(KC_NUHS),S(KC_NUBS),_______, _______, _______, \
-  _______, _______, _______, _______, _______, _______, _______, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY \
-),
-
-/* Raise
- * ,-----------------------------------------------------------------------------------.
- * |   `  |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Bksp |
- * |------+------+------+------+------+-------------+------+------+------+------+------|
- * | Del  |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |   -  |   =  |   [  |   ]  |  \   |
- * |------+------+------+------+------+------|------+------+------+------+------+------|
- * |      |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |ISO # |ISO / |      |      |Enter |
- * |------+------+------+------+------+------+------+------+------+------+------+------|
- * |      |      |      |      |      |             |      | Next | Vol- | Vol+ | Play |
- * `-----------------------------------------------------------------------------------'
- */
-[_RAISE] = LAYOUT( \
-  KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_BSPC, \
-  KC_DEL,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_MINS, KC_EQL,  KC_LBRC, KC_RBRC, KC_BSLS, \
-  _______, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_NUHS, KC_NUBS, _______, _______, _______, \
-  _______, _______, _______, _______, _______, _______, _______, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY \
-),
-
-/* Adjust (Lower + Raise)
- * ,-----------------------------------------------------------------------------------.
- * |      | Reset|      |      |      |      |      |      |      |      |      |  Del |
- * |------+------+------+------+------+-------------+------+------+------+------+------|
- * |      |      |      |Aud on|Audoff|AGnorm|AGswap|Qwerty|Colemk|Dvorak|      |      |
- * |------+------+------+------+------+------|------+------+------+------+------+------|
- * |      |      |      |      |      |      |      |      |      |      |      |      |
- * |------+------+------+------+------+------+------+------+------+------+------+------|
- * |      |      |      |      |      |             |      |      |      |      |      |
- * `-----------------------------------------------------------------------------------'
- */
-[_ADJUST] =  LAYOUT( \
-  _______, RESET,   _______, M_SAMPLE, _______, _______, _______, _______, _______, _______, _______, KC_DEL, \
-  _______, _______, _______, AU_ON,   AU_OFF,  AG_NORM, AG_SWAP, QWERTY,  COLEMAK, DVORAK,  _______, _______, \
-  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, \
-  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______ \
-)
-
-
-};
-
-
-#ifdef AUDIO_ENABLE
-
-float tone_startup[][2]    = SONG(STARTUP_SOUND);
-float tone_qwerty[][2]     = SONG(QWERTY_SOUND);
-float tone_dvorak[][2]     = SONG(DVORAK_SOUND);
-float tone_colemak[][2]    = SONG(COLEMAK_SOUND);
-float tone_plover[][2]     = SONG(PLOVER_SOUND);
-float tone_plover_gb[][2]  = SONG(PLOVER_GOODBYE_SOUND);
-float music_scale[][2]     = SONG(MUSIC_SCALE_SOUND);
-float tone_goodbye[][2]    = SONG(GOODBYE_SOUND);
-#endif
-
-// define variables for reactive RGB
-bool TOG_STATUS = false;
-int RGB_current_mode;
-
-void persistent_default_layer_set(uint16_t default_layer) {
-  eeconfig_update_default_layer(default_layer);
-  default_layer_set(default_layer);
-}
-
-// Setting ADJUST layer RGB back to default
-void update_tri_layer_RGB(uint8_t layer1, uint8_t layer2, uint8_t layer3) {
-  if (IS_LAYER_ON(layer1) && IS_LAYER_ON(layer2)) {
-    rgblight_mode(RGB_current_mode);
-    layer_on(layer3);
-  } else {
-    layer_off(layer3);
-  }
-}
-
-bool process_record_user(uint16_t keycode, keyrecord_t *record) {
-  switch (keycode) {
-    case QWERTY:
-      if (record->event.pressed) {
-        #ifdef AUDIO_ENABLE
-          PLAY_SONG(tone_qwerty);
-        #endif
-        persistent_default_layer_set(1UL<<_QWERTY);
-      }
-      return false;
-      break;
-    case COLEMAK:
-      if (record->event.pressed) {
-        #ifdef AUDIO_ENABLE
-          PLAY_SONG(tone_colemak);
-        #endif
-        persistent_default_layer_set(1UL<<_COLEMAK);
-      }
-      return false;
-      break;
-    case DVORAK:
-      if (record->event.pressed) {
-        #ifdef AUDIO_ENABLE
-          PLAY_SONG(tone_dvorak);
-        #endif
-        persistent_default_layer_set(1UL<<_DVORAK);
-      }
-      return false;
-      break;
-    case LOWER:
-      if (record->event.pressed) {
-          //not sure how to have keyboard check mode and set it to a variable, so my work around
-          //uses another variable that would be set to true after the first time a reactive key is pressed.
-        if (TOG_STATUS) { //TOG_STATUS checks is another reactive key currently pressed, only changes RGB mode if returns false
-        } else {
-          TOG_STATUS = !TOG_STATUS;
-          rgblight_mode(16);
-        }
-        layer_on(_LOWER);
-        update_tri_layer_RGB(_LOWER, _RAISE, _ADJUST);
-      } else {
-        rgblight_mode(RGB_current_mode);   // revert RGB to initial mode prior to RGB mode change
-        TOG_STATUS = false;
-        layer_off(_LOWER);
-        update_tri_layer_RGB(_LOWER, _RAISE, _ADJUST);
-      }
-      return false;
-      break;
-    case RAISE:
-      if (record->event.pressed) {
-        //not sure how to have keyboard check mode and set it to a variable, so my work around
-        //uses another variable that would be set to true after the first time a reactive key is pressed.
-        if (TOG_STATUS) { //TOG_STATUS checks is another reactive key currently pressed, only changes RGB mode if returns false
-        } else {
-          TOG_STATUS = !TOG_STATUS;
-          rgblight_mode(15);
-        }
-        layer_on(_RAISE);
-        update_tri_layer_RGB(_LOWER, _RAISE, _ADJUST);
-      } else {
-        rgblight_mode(RGB_current_mode);  // revert RGB to initial mode prior to RGB mode change
-        layer_off(_RAISE);
-        TOG_STATUS = false;
-        update_tri_layer_RGB(_LOWER, _RAISE, _ADJUST);
-      }
-      return false;
-      break;
-    case BACKLIT:
-      if (record->event.pressed) {
-        register_code(KC_RSFT);
-        #ifdef BACKLIGHT_ENABLE
-          backlight_step();
-        #endif
-      } else {
-        unregister_code(KC_RSFT);
-      }
-      return false;
-      break;
-      //led operations - RGB mode change now updates the RGB_current_mode to allow the right RGB mode to be set after reactive keys are released
-    case RGB_MOD:
-      if (record->event.pressed) {
-        rgblight_mode(RGB_current_mode);
-        rgblight_step();
-        RGB_current_mode = rgblight_config.mode;
-      }
-      return false;
-      break;
-    case M_SAMPLE:
-      if (record->event.pressed){
-        SEND_STRING("hello world");
-      }
-      return false;
-  }
-  return true;
-}
-
-void matrix_init_user(void) {
-    #ifdef AUDIO_ENABLE
-        startup_user();
-    #endif
-    RGB_current_mode = rgblight_config.mode;
-}
-
-//SSD1306 OLED init and update loop, make sure to add #define SSD1306OLED in config.h
-#ifdef SSD1306OLED
-void matrix_master_OLED_init (void) {
-    TWI_Init(TWI_BIT_PRESCALE_1, TWI_BITLENGTH_FROM_FREQ(1, 800000));
-    iota_gfx_init();   // turns on the display
-}
-
-void matrix_scan_user(void) {
-     iota_gfx_task();  // this is what updates the display continuously
-}
-#endif
-
-#ifdef AUDIO_ENABLE
-
-void startup_user()
-{
-    _delay_ms(20); // gets rid of tick
-    PLAY_SONG(tone_startup);
-}
-
-void shutdown_user()
-{
-    PLAY_SONG(tone_goodbye);
-    _delay_ms(150);
-    stop_all_notes();
-}
-
-void music_on_user(void)
-{
-    music_scale_user();
-}
-
-void music_scale_user(void)
-{
-    PLAY_SONG(music_scale);
-}
-
-#endif
-
-void matrix_update(struct CharacterMatrix *dest,
-                          const struct CharacterMatrix *source) {
-  if (memcmp(dest->display, source->display, sizeof(dest->display))) {
-    memcpy(dest->display, source->display, sizeof(dest->display));
-    dest->dirty = true;
-  }
-}
-
-//assign the right code to your layers for OLED display
-#define L_BASE 0
-#define L_LOWER 8
-#define L_RAISE 16
-#define L_FNLAYER 64
-#define L_NUMLAY 128
-#define L_NLOWER 136
-#define L_NFNLAYER 192
-#define L_MOUSECURSOR 256
-#define L_ADJUST 65560
-
-void iota_gfx_task_user(void) {
-#if DEBUG_TO_SCREEN
-  if (debug_enable) {
-    return;
-  }
-#endif
-
-  struct CharacterMatrix matrix;
-
-  matrix_clear(&matrix);
-  matrix_write_P(&matrix, PSTR("USB: "));
-#ifdef PROTOCOL_LUFA
-  switch (USB_DeviceState) {
-    case DEVICE_STATE_Unattached:
-      matrix_write_P(&matrix, PSTR("Unattached"));
-      break;
-    case DEVICE_STATE_Suspended:
-      matrix_write_P(&matrix, PSTR("Suspended"));
-      break;
-    case DEVICE_STATE_Configured:
-      matrix_write_P(&matrix, PSTR("Connected"));
-      break;
-    case DEVICE_STATE_Powered:
-      matrix_write_P(&matrix, PSTR("Powered"));
-      break;
-    case DEVICE_STATE_Default:
-      matrix_write_P(&matrix, PSTR("Default"));
-      break;
-    case DEVICE_STATE_Addressed:
-      matrix_write_P(&matrix, PSTR("Addressed"));
-      break;
-    default:
-      matrix_write_P(&matrix, PSTR("Invalid"));
-  }
-#endif
-
-// Define layers here, Have not worked out how to have text displayed for each layer. Copy down the number you see and add a case for it below
-
-  char buf[40];
-  snprintf(buf,sizeof(buf), "Undef-%ld", layer_state);
-  matrix_write_P(&matrix, PSTR("\n\nLayer: "));
-    switch (layer_state) {
-        case L_BASE:
-           matrix_write_P(&matrix, PSTR("Default"));
-           break;
-        case L_RAISE:
-           matrix_write_P(&matrix, PSTR("Raise"));
-           break;
-        case L_LOWER:
-           matrix_write_P(&matrix, PSTR("Lower"));
-           break;
-        case L_ADJUST:
-           matrix_write_P(&matrix, PSTR("ADJUST"));
-           break;
-        default:
-           matrix_write(&matrix, buf);
- }
-
-  // Host Keyboard LED Status
-  char led[40];
-    snprintf(led, sizeof(led), "\n%s  %s  %s",
-            (host_keyboard_leds() & (1<<USB_LED_NUM_LOCK)) ? "NUMLOCK" : "       ",
-            (host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK)) ? "CAPS" : "    ",
-            (host_keyboard_leds() & (1<<USB_LED_SCROLL_LOCK)) ? "SCLK" : "    ");
-  matrix_write(&matrix, led);
-  matrix_update(&display, &matrix);
-}
diff --git a/keyboards/lets_split/keymaps/OLED_sample/readme.md b/keyboards/lets_split/keymaps/OLED_sample/readme.md
deleted file mode 100644
index 02888855b8..0000000000
--- a/keyboards/lets_split/keymaps/OLED_sample/readme.md
+++ /dev/null
@@ -1,25 +0,0 @@
-SSD1306 OLED Display via I2C
-======
-
-Features
---------
-
-Some features supported by the firmware:
-
-
-* I2C connection between the two halves is required as the OLED display will use this connection as well. Note this
-  requires pull-up resistors on the data and clock lines.
-* OLED display will connect from either side
-
-
-Wiring
-------
-
-
-Work in progress...
-
-
-OLED Configuration
--------------------------------
-
-Work in progress...
diff --git a/keyboards/lets_split/keymaps/OLED_sample/rules.mk b/keyboards/lets_split/keymaps/OLED_sample/rules.mk
deleted file mode 100644
index e1716e0c02..0000000000
--- a/keyboards/lets_split/keymaps/OLED_sample/rules.mk
+++ /dev/null
@@ -1,22 +0,0 @@
-SRC += ssd1306.c
-
-# Build Options
-#   change to "no" to disable the options, or define them in the Makefile in
-#   the appropriate keymap folder that will get included automatically
-#
-BOOTMAGIC_ENABLE = no       # Enable Bootmagic Lite
-MOUSEKEY_ENABLE = no        # Mouse keys
-EXTRAKEY_ENABLE = yes       # Audio control and System control
-CONSOLE_ENABLE = no         # Console for debug
-COMMAND_ENABLE = no         # Commands for debug and configuration
-NKRO_ENABLE = yes           # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
-MIDI_ENABLE = no            # MIDI controls
-AUDIO_ENABLE = no           # Audio output on port C6
-UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE = yes       # Enable WS2812 RGB underlight.
-SWAP_HANDS_ENABLE = no      # Enable one-hand typing
-
-# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
diff --git a/platforms/avr/drivers/ssd1306.c b/platforms/avr/drivers/ssd1306.c
deleted file mode 100644
index 7afbc09f00..0000000000
--- a/platforms/avr/drivers/ssd1306.c
+++ /dev/null
@@ -1,329 +0,0 @@
-#ifdef SSD1306OLED
-
-#    include "ssd1306.h"
-#    include "i2c.h"
-#    include <string.h>
-#    include "print.h"
-#    include "glcdfont.c"
-#    ifdef PROTOCOL_LUFA
-#        include "lufa.h"
-#    endif
-#    include "sendchar.h"
-#    include "timer.h"
-
-struct CharacterMatrix display;
-
-// Set this to 1 to help diagnose early startup problems
-// when testing power-on with ble.  Turn it off otherwise,
-// as the latency of printing most of the debug info messes
-// with the matrix scan, causing keys to drop.
-#    define DEBUG_TO_SCREEN 0
-
-// static uint16_t last_battery_update;
-// static uint32_t vbat;
-//#define BatteryUpdateInterval 10000 /* milliseconds */
-#    define ScreenOffInterval 300000 /* milliseconds */
-#    if DEBUG_TO_SCREEN
-static uint8_t displaying;
-#    endif
-static uint16_t last_flush;
-
-// Write command sequence.
-// Returns true on success.
-static inline bool _send_cmd1(uint8_t cmd) {
-    bool res = false;
-
-    if (i2c_start_write(SSD1306_ADDRESS)) {
-        xprintf("failed to start write to %d\n", SSD1306_ADDRESS);
-        goto done;
-    }
-
-    if (i2c_master_write(0x0 /* command byte follows */)) {
-        print("failed to write control byte\n");
-
-        goto done;
-    }
-
-    if (i2c_master_write(cmd)) {
-        xprintf("failed to write command %d\n", cmd);
-        goto done;
-    }
-    res = true;
-done:
-    i2c_master_stop();
-    return res;
-}
-
-// Write 2-byte command sequence.
-// Returns true on success
-static inline bool _send_cmd2(uint8_t cmd, uint8_t opr) {
-    if (!_send_cmd1(cmd)) {
-        return false;
-    }
-    return _send_cmd1(opr);
-}
-
-// Write 3-byte command sequence.
-// Returns true on success
-static inline bool _send_cmd3(uint8_t cmd, uint8_t opr1, uint8_t opr2) {
-    if (!_send_cmd1(cmd)) {
-        return false;
-    }
-    if (!_send_cmd1(opr1)) {
-        return false;
-    }
-    return _send_cmd1(opr2);
-}
-
-#    define send_cmd1(c)      \
-        if (!_send_cmd1(c)) { \
-            goto done;        \
-        }
-#    define send_cmd2(c, o)      \
-        if (!_send_cmd2(c, o)) { \
-            goto done;           \
-        }
-#    define send_cmd3(c, o1, o2)      \
-        if (!_send_cmd3(c, o1, o2)) { \
-            goto done;                \
-        }
-
-static void clear_display(void) {
-    matrix_clear(&display);
-
-    // Clear all of the display bits (there can be random noise
-    // in the RAM on startup)
-    send_cmd3(PageAddr, 0, (DisplayHeight / 8) - 1);
-    send_cmd3(ColumnAddr, 0, DisplayWidth - 1);
-
-    if (i2c_start_write(SSD1306_ADDRESS)) {
-        goto done;
-    }
-    if (i2c_master_write(0x40)) {
-        // Data mode
-        goto done;
-    }
-    for (uint8_t row = 0; row < MatrixRows; ++row) {
-        for (uint8_t col = 0; col < DisplayWidth; ++col) {
-            i2c_master_write(0);
-        }
-    }
-
-    display.dirty = false;
-
-done:
-    i2c_master_stop();
-}
-
-#    if DEBUG_TO_SCREEN
-#        undef sendchar
-static int8_t capture_sendchar(uint8_t c) {
-    sendchar(c);
-    iota_gfx_write_char(c);
-
-    if (!displaying) {
-        iota_gfx_flush();
-    }
-    return 0;
-}
-#    endif
-
-bool iota_gfx_init(void) {
-    bool success = false;
-
-    send_cmd1(DisplayOff);
-    send_cmd2(SetDisplayClockDiv, 0x80);
-    send_cmd2(SetMultiPlex, DisplayHeight - 1);
-
-    send_cmd2(SetDisplayOffset, 0);
-
-    send_cmd1(SetStartLine | 0x0);
-    send_cmd2(SetChargePump, 0x14 /* Enable */);
-    send_cmd2(SetMemoryMode, 0 /* horizontal addressing */);
-
-#    ifdef OLED_ROTATE180
-    // the following Flip the display orientation 180 degrees
-    send_cmd1(SegRemap);
-    send_cmd1(ComScanInc);
-#    endif
-#    ifndef OLED_ROTATE180
-    // Flips the display orientation 0 degrees
-    send_cmd1(SegRemap | 0x1);
-    send_cmd1(ComScanDec);
-#    endif
-
-    send_cmd2(SetComPins, 0x2);
-    send_cmd2(SetContrast, 0x8f);
-    send_cmd2(SetPreCharge, 0xf1);
-    send_cmd2(SetVComDetect, 0x40);
-    send_cmd1(DisplayAllOnResume);
-    send_cmd1(NormalDisplay);
-    send_cmd1(DeActivateScroll);
-    send_cmd1(DisplayOn);
-
-    send_cmd2(SetContrast, 0); // Dim
-
-    clear_display();
-
-    success = true;
-
-    iota_gfx_flush();
-
-#    if DEBUG_TO_SCREEN
-    print_set_sendchar(capture_sendchar);
-#    endif
-
-done:
-    return success;
-}
-
-bool iota_gfx_off(void) {
-    bool success = false;
-
-    send_cmd1(DisplayOff);
-    success = true;
-
-done:
-    return success;
-}
-
-bool iota_gfx_on(void) {
-    bool success = false;
-
-    send_cmd1(DisplayOn);
-    success = true;
-
-done:
-    return success;
-}
-
-void matrix_write_char_inner(struct CharacterMatrix *matrix, uint8_t c) {
-    *matrix->cursor = c;
-    ++matrix->cursor;
-
-    if (matrix->cursor - &matrix->display[0][0] == sizeof(matrix->display)) {
-        // We went off the end; scroll the display upwards by one line
-        memmove(&matrix->display[0], &matrix->display[1], MatrixCols * (MatrixRows - 1));
-        matrix->cursor = &matrix->display[MatrixRows - 1][0];
-        memset(matrix->cursor, ' ', MatrixCols);
-    }
-}
-
-void matrix_write_char(struct CharacterMatrix *matrix, uint8_t c) {
-    matrix->dirty = true;
-
-    if (c == '\n') {
-        // Clear to end of line from the cursor and then move to the
-        // start of the next line
-        uint8_t cursor_col = (matrix->cursor - &matrix->display[0][0]) % MatrixCols;
-
-        while (cursor_col++ < MatrixCols) {
-            matrix_write_char_inner(matrix, ' ');
-        }
-        return;
-    }
-
-    matrix_write_char_inner(matrix, c);
-}
-
-void iota_gfx_write_char(uint8_t c) {
-    matrix_write_char(&display, c);
-}
-
-void matrix_write(struct CharacterMatrix *matrix, const char *data) {
-    const char *end = data + strlen(data);
-    while (data < end) {
-        matrix_write_char(matrix, *data);
-        ++data;
-    }
-}
-
-void iota_gfx_write(const char *data) {
-    matrix_write(&display, data);
-}
-
-void matrix_write_P(struct CharacterMatrix *matrix, const char *data) {
-    while (true) {
-        uint8_t c = pgm_read_byte(data);
-        if (c == 0) {
-            return;
-        }
-        matrix_write_char(matrix, c);
-        ++data;
-    }
-}
-
-void iota_gfx_write_P(const char *data) {
-    matrix_write_P(&display, data);
-}
-
-void matrix_clear(struct CharacterMatrix *matrix) {
-    memset(matrix->display, ' ', sizeof(matrix->display));
-    matrix->cursor = &matrix->display[0][0];
-    matrix->dirty  = true;
-}
-
-void iota_gfx_clear_screen(void) {
-    matrix_clear(&display);
-}
-
-void matrix_render(struct CharacterMatrix *matrix) {
-    last_flush = timer_read();
-    iota_gfx_on();
-#    if DEBUG_TO_SCREEN
-    ++displaying;
-#    endif
-
-    // Move to the home position
-    send_cmd3(PageAddr, 0, MatrixRows - 1);
-    send_cmd3(ColumnAddr, 0, (MatrixCols * FontWidth) - 1);
-
-    if (i2c_start_write(SSD1306_ADDRESS)) {
-        goto done;
-    }
-    if (i2c_master_write(0x40)) {
-        // Data mode
-        goto done;
-    }
-
-    for (uint8_t row = 0; row < MatrixRows; ++row) {
-        for (uint8_t col = 0; col < MatrixCols; ++col) {
-            const uint8_t *glyph = font + (matrix->display[row][col] * (FontWidth - 1));
-
-            for (uint8_t glyphCol = 0; glyphCol < FontWidth - 1; ++glyphCol) {
-                uint8_t colBits = pgm_read_byte(glyph + glyphCol);
-                i2c_master_write(colBits);
-            }
-
-            // 1 column of space between chars (it's not included in the glyph)
-            i2c_master_write(0);
-        }
-    }
-
-    matrix->dirty = false;
-
-done:
-    i2c_master_stop();
-#    if DEBUG_TO_SCREEN
-    --displaying;
-#    endif
-}
-
-void iota_gfx_flush(void) {
-    matrix_render(&display);
-}
-
-__attribute__((weak)) void iota_gfx_task_user(void) {}
-
-void iota_gfx_task(void) {
-    iota_gfx_task_user();
-
-    if (display.dirty) {
-        iota_gfx_flush();
-    }
-
-    if (timer_elapsed(last_flush) > ScreenOffInterval) {
-        iota_gfx_off();
-    }
-}
-#endif
diff --git a/platforms/avr/drivers/ssd1306.h b/platforms/avr/drivers/ssd1306.h
deleted file mode 100644
index 6eecdcfaa4..0000000000
--- a/platforms/avr/drivers/ssd1306.h
+++ /dev/null
@@ -1,87 +0,0 @@
-#pragma once
-
-#include <stdbool.h>
-#include <stdio.h>
-#include "config.h"
-
-enum ssd1306_cmds {
-    DisplayOff = 0xAE,
-    DisplayOn  = 0xAF,
-
-    SetContrast        = 0x81,
-    DisplayAllOnResume = 0xA4,
-
-    DisplayAllOn       = 0xA5,
-    NormalDisplay      = 0xA6,
-    InvertDisplay      = 0xA7,
-    SetDisplayOffset   = 0xD3,
-    SetComPins         = 0xda,
-    SetVComDetect      = 0xdb,
-    SetDisplayClockDiv = 0xD5,
-    SetPreCharge       = 0xd9,
-    SetMultiPlex       = 0xa8,
-    SetLowColumn       = 0x00,
-    SetHighColumn      = 0x10,
-    SetStartLine       = 0x40,
-
-    SetMemoryMode = 0x20,
-    ColumnAddr    = 0x21,
-    PageAddr      = 0x22,
-
-    ComScanInc    = 0xc0,
-    ComScanDec    = 0xc8,
-    SegRemap      = 0xa0,
-    SetChargePump = 0x8d,
-    ExternalVcc   = 0x01,
-    SwitchCapVcc  = 0x02,
-
-    ActivateScroll                   = 0x2f,
-    DeActivateScroll                 = 0x2e,
-    SetVerticalScrollArea            = 0xa3,
-    RightHorizontalScroll            = 0x26,
-    LeftHorizontalScroll             = 0x27,
-    VerticalAndRightHorizontalScroll = 0x29,
-    VerticalAndLeftHorizontalScroll  = 0x2a,
-};
-
-// Controls the SSD1306 128x32 OLED display via i2c
-
-#ifndef SSD1306_ADDRESS
-#    define SSD1306_ADDRESS 0x3C
-#endif
-
-#define DisplayHeight 32
-#define DisplayWidth 128
-
-#define FontHeight 8
-#define FontWidth 6
-
-#define MatrixRows (DisplayHeight / FontHeight)
-#define MatrixCols (DisplayWidth / FontWidth)
-
-struct CharacterMatrix {
-    uint8_t  display[MatrixRows][MatrixCols];
-    uint8_t *cursor;
-    bool     dirty;
-};
-
-extern struct CharacterMatrix display;
-
-bool iota_gfx_init(void);
-void iota_gfx_task(void);
-bool iota_gfx_off(void);
-bool iota_gfx_on(void);
-void iota_gfx_flush(void);
-void iota_gfx_write_char(uint8_t c);
-void iota_gfx_write(const char *data);
-void iota_gfx_write_P(const char *data);
-void iota_gfx_clear_screen(void);
-
-void iota_gfx_task_user(void);
-
-void matrix_clear(struct CharacterMatrix *matrix);
-void matrix_write_char_inner(struct CharacterMatrix *matrix, uint8_t c);
-void matrix_write_char(struct CharacterMatrix *matrix, uint8_t c);
-void matrix_write(struct CharacterMatrix *matrix, const char *data);
-void matrix_write_P(struct CharacterMatrix *matrix, const char *data);
-void matrix_render(struct CharacterMatrix *matrix);