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Merge pull request qmk#484 from jackhumbert/lets-split-support
Add Let's Split support
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SRC += matrix.c \ | ||
i2c.c \ | ||
split_util.c \ | ||
serial.c | ||
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# MCU name | ||
#MCU = at90usb1287 | ||
MCU = atmega32u4 | ||
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# Processor frequency. | ||
# This will define a symbol, F_CPU, in all source code files equal to the | ||
# processor frequency in Hz. You can then use this symbol in your source code to | ||
# calculate timings. Do NOT tack on a 'UL' at the end, this will be done | ||
# automatically to create a 32-bit value in your source code. | ||
# | ||
# This will be an integer division of F_USB below, as it is sourced by | ||
# F_USB after it has run through any CPU prescalers. Note that this value | ||
# does not *change* the processor frequency - it should merely be updated to | ||
# reflect the processor speed set externally so that the code can use accurate | ||
# software delays. | ||
F_CPU = 16000000 | ||
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# | ||
# LUFA specific | ||
# | ||
# Target architecture (see library "Board Types" documentation). | ||
ARCH = AVR8 | ||
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# Input clock frequency. | ||
# This will define a symbol, F_USB, in all source code files equal to the | ||
# input clock frequency (before any prescaling is performed) in Hz. This value may | ||
# differ from F_CPU if prescaling is used on the latter, and is required as the | ||
# raw input clock is fed directly to the PLL sections of the AVR for high speed | ||
# clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL' | ||
# at the end, this will be done automatically to create a 32-bit value in your | ||
# source code. | ||
# | ||
# If no clock division is performed on the input clock inside the AVR (via the | ||
# CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU. | ||
F_USB = $(F_CPU) | ||
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# Interrupt driven control endpoint task(+60) | ||
OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT | ||
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# Boot Section Size in *bytes* | ||
# Teensy halfKay 512 | ||
# Teensy++ halfKay 1024 | ||
# Atmel DFU loader 4096 | ||
# LUFA bootloader 4096 | ||
# USBaspLoader 2048 | ||
OPT_DEFS += -DBOOTLOADER_SIZE=4096 | ||
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# 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 # Virtual DIP switch configuration(+1000) | ||
MOUSEKEY_ENABLE ?= yes # Mouse keys(+4700) | ||
EXTRAKEY_ENABLE ?= yes # Audio control and System control(+450) | ||
CONSOLE_ENABLE ?= no # Console for debug(+400) | ||
COMMAND_ENABLE ?= yes # Commands for debug and configuration | ||
NKRO_ENABLE ?= no # 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 ?= yes # Audio output on port C6 | ||
UNICODE_ENABLE ?= no # Unicode | ||
BLUETOOTH_ENABLE ?= no # Enable Bluetooth with the Adafruit EZ-Key HID | ||
RGBLIGHT_ENABLE ?= no # Enable WS2812 RGB underlight. Do not enable this with audio at the same time. | ||
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# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE | ||
SLEEP_LED_ENABLE ?= no # Breathing sleep LED during USB suspend | ||
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CUSTOM_MATRIX = yes | ||
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ifndef QUANTUM_DIR | ||
include ../../Makefile | ||
endif |
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/* | ||
Copyright 2012 Jun Wako <wakojun@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/>. | ||
*/ | ||
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#ifndef CONFIG_H | ||
#define CONFIG_H | ||
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#include "config_common.h" | ||
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/* USB Device descriptor parameter */ | ||
#define VENDOR_ID 0xFEED | ||
#define PRODUCT_ID 0x3060 | ||
#define DEVICE_VER 0x0001 | ||
#define MANUFACTURER Wootpatoot | ||
#define PRODUCT Lets Split | ||
#define DESCRIPTION A split keyboard for the cheap makers | ||
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/* key matrix size */ | ||
// Rows are doubled-up | ||
#define MATRIX_ROWS 8 | ||
#define MATRIX_COLS 6 | ||
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// wiring of each half | ||
#define MATRIX_ROW_PINS { B5, B4, E6, D7 } | ||
#define MATRIX_COL_PINS { F4, F5, F6, F7, B1, B3 } | ||
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#define CATERINA_BOOTLOADER | ||
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// #define USE_I2C | ||
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// #define EE_HANDS | ||
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#define I2C_MASTER_LEFT | ||
// #define I2C_MASTER_RIGHT | ||
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/* COL2ROW or ROW2COL */ | ||
#define DIODE_DIRECTION COL2ROW | ||
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/* define if matrix has ghost */ | ||
//#define MATRIX_HAS_GHOST | ||
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/* number of backlight levels */ | ||
// #define BACKLIGHT_LEVELS 3 | ||
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/* Set 0 if debouncing isn't needed */ | ||
#define DEBOUNCING_DELAY 5 | ||
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/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */ | ||
#define LOCKING_SUPPORT_ENABLE | ||
/* Locking resynchronize hack */ | ||
#define LOCKING_RESYNC_ENABLE | ||
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/* key combination for command */ | ||
#define IS_COMMAND() ( \ | ||
keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \ | ||
) | ||
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/* ws2812 RGB LED */ | ||
#define ws2812_PORTREG PORTD | ||
#define ws2812_DDRREG DDRD | ||
#define ws2812_pin PD1 | ||
#define RGBLED_NUM 28 // Number of LEDs | ||
#define RGBLIGHT_HUE_STEP 10 | ||
#define RGBLIGHT_SAT_STEP 17 | ||
#define RGBLIGHT_VAL_STEP 17 | ||
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/* | ||
* Feature disable options | ||
* These options are also useful to firmware size reduction. | ||
*/ | ||
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/* disable debug print */ | ||
// #define NO_DEBUG | ||
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/* disable print */ | ||
// #define NO_PRINT | ||
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/* disable action features */ | ||
//#define NO_ACTION_LAYER | ||
//#define NO_ACTION_TAPPING | ||
//#define NO_ACTION_ONESHOT | ||
//#define NO_ACTION_MACRO | ||
//#define NO_ACTION_FUNCTION | ||
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#endif |
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:080000000000000000000001F7 | ||
:00000001FF |
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:080000000000000000000000F8 | ||
:00000001FF |
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#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" | ||
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// 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 | ||
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#define BUFFER_POS_INC() (slave_buffer_pos = (slave_buffer_pos+1)%SLAVE_BUFFER_SIZE) | ||
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volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE]; | ||
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static volatile uint8_t slave_buffer_pos; | ||
static volatile bool slave_has_register_set = false; | ||
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// 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++; | ||
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// easier way, but will wait slightly longer | ||
// _delay_us(100); | ||
} | ||
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// 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; | ||
} | ||
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// 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); | ||
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i2c_delay(); | ||
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// check that we started successfully | ||
if ( (TW_STATUS != TW_START) && (TW_STATUS != TW_REP_START)) | ||
return 1; | ||
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TWDR = address; | ||
TWCR = (1<<TWINT) | (1<<TWEN); | ||
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i2c_delay(); | ||
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if ( (TW_STATUS != TW_MT_SLA_ACK) && (TW_STATUS != TW_MR_SLA_ACK) ) | ||
return 1; // slave did not acknowledge | ||
else | ||
return 0; // success | ||
} | ||
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// Finish the i2c transaction. | ||
void i2c_master_stop(void) { | ||
TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO); | ||
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uint16_t lim = 0; | ||
while(!(TWCR & (1<<TWSTO)) && lim < I2C_LOOP_TIMEOUT) | ||
lim++; | ||
} | ||
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// 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); | ||
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i2c_delay(); | ||
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// check if the slave acknowledged us | ||
return (TW_STATUS == TW_MT_DATA_ACK) ? 0 : 1; | ||
} | ||
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// 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); | ||
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i2c_delay(); | ||
return TWDR; | ||
} | ||
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void i2c_reset_state(void) { | ||
TWCR = 0; | ||
} | ||
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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); | ||
} | ||
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ISR(TWI_vect); | ||
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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; | ||
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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; | ||
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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; | ||
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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); | ||
} |
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#ifndef I2C_H | ||
#define I2C_H | ||
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#include <stdint.h> | ||
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#ifndef F_CPU | ||
#define F_CPU 16000000UL | ||
#endif | ||
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#define I2C_READ 1 | ||
#define I2C_WRITE 0 | ||
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#define I2C_ACK 1 | ||
#define I2C_NACK 0 | ||
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#define SLAVE_BUFFER_SIZE 0x10 | ||
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// i2c SCL clock frequency | ||
#define SCL_CLOCK 100000L | ||
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extern volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE]; | ||
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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); | ||
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#endif |
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