From 44435d74447df0b190e02201181416d3d4b8cdff Mon Sep 17 00:00:00 2001
From: mechmerlin <mechmerlin@gmail.com>
Date: Sat, 6 Apr 2019 18:30:15 -0700
Subject: [PATCH] remove custom i2c code in favor of QMK i2c_master

---
 keyboards/exclusive/e6v2/bmc/bmc.c    |   4 +-
 keyboards/exclusive/e6v2/bmc/i2c.c    | 106 --------------------------
 keyboards/exclusive/e6v2/bmc/i2c.h    |  24 ------
 keyboards/exclusive/e6v2/bmc/rules.mk |   2 +-
 4 files changed, 3 insertions(+), 133 deletions(-)
 delete mode 100644 keyboards/exclusive/e6v2/bmc/i2c.c
 delete mode 100644 keyboards/exclusive/e6v2/bmc/i2c.h

diff --git a/keyboards/exclusive/e6v2/bmc/bmc.c b/keyboards/exclusive/e6v2/bmc/bmc.c
index e3dd244c5..257b68b8b 100644
--- a/keyboards/exclusive/e6v2/bmc/bmc.c
+++ b/keyboards/exclusive/e6v2/bmc/bmc.c
@@ -15,7 +15,7 @@
  */
 #include "bmc.h"
 #include "rgblight.h"
-#include "i2c.h"
+#include "i2c_master.h"
 
 void matrix_init_kb(void) {
 	// put your keyboard start-up code here
@@ -57,7 +57,7 @@ void rgblight_set(void) {
     }
 
     i2c_init();
-    i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
+    i2c_transmit(0xb0, (uint8_t*)led, 3 * RGBLED_NUM, 100);
 }
 #endif
 
diff --git a/keyboards/exclusive/e6v2/bmc/i2c.c b/keyboards/exclusive/e6v2/bmc/i2c.c
deleted file mode 100644
index 801242e0d..000000000
--- a/keyboards/exclusive/e6v2/bmc/i2c.c
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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/>.
-*/
-
-// Please do not modify this file 
-
-#include <avr/io.h>
-#include <util/twi.h>
-
-#include "i2c.h"
-
-void i2c_set_bitrate(uint16_t bitrate_khz) {
-    uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz);
-    if (bitrate_div >= 16) {
-        bitrate_div = (bitrate_div - 16) / 2;
-    }
-    TWBR = bitrate_div;
-}
-
-void i2c_init(void) {
-    // set pull-up resistors on I2C bus pins
-    PORTC |= 0b11;
-
-    i2c_set_bitrate(400);
-
-    // enable TWI (two-wire interface)
-    TWCR |= (1 << TWEN);
-
-    // enable TWI interrupt and slave address ACK
-    TWCR |= (1 << TWIE);
-    TWCR |= (1 << TWEA);
-}
-
-uint8_t i2c_start(uint8_t address) {
-    // reset TWI control register
-    TWCR = 0;
-
-    // begin transmission and wait for it to end
-    TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    // check if the start condition was successfully transmitted
-    if ((TWSR & 0xF8) != TW_START) {
-        return 1;
-    }
-
-    // transmit address and wait
-    TWDR = address;
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    // check if the device has acknowledged the READ / WRITE mode
-    uint8_t twst = TW_STATUS & 0xF8;
-    if ((twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK)) {
-        return 1;
-    }
-
-    return 0;
-}
-
-void i2c_stop(void) {
-    TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
-}
-
-uint8_t i2c_write(uint8_t data) {
-    TWDR = data;
-
-    // transmit data and wait
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    if ((TWSR & 0xF8) != TW_MT_DATA_ACK) {
-        return 1;
-    }
-
-    return 0;
-}
-
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) {
-    if (i2c_start(address)) {
-        return 1;
-    }
-
-    for (uint16_t i = 0; i < length; i++) {
-        if (i2c_write(data[i])) {
-            return 1;
-        }
-    }
-
-    i2c_stop();
-
-    return 0;
-}
\ No newline at end of file
diff --git a/keyboards/exclusive/e6v2/bmc/i2c.h b/keyboards/exclusive/e6v2/bmc/i2c.h
deleted file mode 100644
index 5407d7bee..000000000
--- a/keyboards/exclusive/e6v2/bmc/i2c.h
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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/>.
-*/
-
-// Please do not modify this file 
-
-#pragma once
-
-void i2c_init(void);
-void i2c_set_bitrate(uint16_t bitrate_khz);
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length);
\ No newline at end of file
diff --git a/keyboards/exclusive/e6v2/bmc/rules.mk b/keyboards/exclusive/e6v2/bmc/rules.mk
index 7c3e16b15..59f98e6f4 100644
--- a/keyboards/exclusive/e6v2/bmc/rules.mk
+++ b/keyboards/exclusive/e6v2/bmc/rules.mk
@@ -85,6 +85,6 @@ AUDIO_ENABLE = no           # Audio output on port C6
 FAUXCLICKY_ENABLE = no      # Use buzzer to emulate clicky switches
 HD44780_ENABLE = no 		# Enable support for HD44780 based LCDs (+400)
 
-SRC += i2c.c
+SRC += i2c_master.c
 
 PROGRAM_CMD = ./util/atmega32a_program.py $(TARGET).hex