1 files changed, 0 insertions, 86 deletions
diff --git a/drivers/avr/i2c_slave.c b/drivers/avr/i2c_slave.c
deleted file mode 100644
index 62a378165a..0000000000
--- a/drivers/avr/i2c_slave.c
+++ /dev/null
@@ -1,86 +0,0 @@
-/*  Copyright (C) 2019 Elia Ritterbusch
- +
- *  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 3 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 <https://www.gnu.org/licenses/>.
- */
-/* Library made by: g4lvanix
- * GitHub repository: https://github.com/g4lvanix/I2C-slave-lib
- */
-
-#include <avr/io.h>
-#include <util/twi.h>
-#include <avr/interrupt.h>
-#include <stdbool.h>
-
-#include "i2c_slave.h"
-
-volatile uint8_t i2c_slave_reg[I2C_SLAVE_REG_COUNT];
-
-static volatile uint8_t buffer_address;
-static volatile bool    slave_has_register_set = false;
-
-void i2c_slave_init(uint8_t address) {
-    // load address into TWI address register
-    TWAR = address;
-    // set the TWCR to enable address matching and enable TWI, clear TWINT, enable TWI interrupt
-    TWCR = (1 << TWIE) | (1 << TWEA) | (1 << TWINT) | (1 << TWEN);
-}
-
-void i2c_slave_stop(void) {
-    // clear acknowledge and enable bits
-    TWCR &= ~((1 << TWEA) | (1 << TWEN));
-}
-
-ISR(TWI_vect) {
-    uint8_t ack = 1;
-
-    switch (TW_STATUS) {
-        case TW_SR_SLA_ACK:
-            // The device is now a slave receiver
-            slave_has_register_set = false;
-            break;
-
-        case TW_SR_DATA_ACK:
-            // This device is a slave receiver and has received data
-            // First byte is the location then the bytes will be writen in buffer with auto-incriment
-            if (!slave_has_register_set) {
-                buffer_address = TWDR;
-
-                if (buffer_address >= I2C_SLAVE_REG_COUNT) {  // address out of bounds dont ack
-                    ack            = 0;
-                    buffer_address = 0;
-                }
-                slave_has_register_set = true;  // address has been receaved now fill in buffer
-            } else {
-                i2c_slave_reg[buffer_address] = TWDR;
-                buffer_address++;
-            }
-            break;
-
-        case TW_ST_SLA_ACK:
-        case TW_ST_DATA_ACK:
-            // This device is a slave transmitter and master has requested data
-            TWDR = i2c_slave_reg[buffer_address];
-            buffer_address++;
-            break;
-
-        case TW_BUS_ERROR:
-            // We got an error, reset i2c
-            TWCR = 0;
-        default:
-            break;
-    }
-
-    // Reset i2c state machine to be ready for next interrupt
-    TWCR |= (1 << TWIE) | (1 << TWINT) | (ack << TWEA) | (1 << TWEN);
-}