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Add ErgoDash keyboard (#3128)

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* create ergodash

* Revert "create ergodash"

This reverts commit b261c808c30fee95cb656629f7e9b44b01e79363.

* add ergodash

* keymap→layout

* use set_single_persistent_default_layer
peb
omkbd 7 years ago committed by Drashna Jaelre
parent 96546c79c0
commit e921b9a77e
19 changed files with 1578 additions and 0 deletions
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  1. 24
      keyboards/ergodash/config.h
  2. 1
      keyboards/ergodash/ergodash.c
  3. 29
      keyboards/ergodash/ergodash.h
  4. 162
      keyboards/ergodash/i2c.c
  5. 49
      keyboards/ergodash/i2c.h
  6. 44
      keyboards/ergodash/keymaps/default/config.h
  7. 163
      keyboards/ergodash/keymaps/default/keymap.c
  8. 0
      keyboards/ergodash/keymaps/default/rules.mk
  9. 460
      keyboards/ergodash/matrix.c
  10. 13
      keyboards/ergodash/readme.md
  11. 90
      keyboards/ergodash/rev1/config.h
  12. 39
      keyboards/ergodash/rev1/rev1.c
  13. 66
      keyboards/ergodash/rev1/rev1.h
  14. 1
      keyboards/ergodash/rev1/rules.mk
  15. 77
      keyboards/ergodash/rules.mk
  16. 228
      keyboards/ergodash/serial.c
  17. 26
      keyboards/ergodash/serial.h
  18. 86
      keyboards/ergodash/split_util.c
  19. 20
      keyboards/ergodash/split_util.h

24
keyboards/ergodash/config.h
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/*
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_H
#define CONFIG_H
#include "config_common.h"
#endif

1
keyboards/ergodash/ergodash.c
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#include "ergodash.h"

29
keyboards/ergodash/ergodash.h
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#ifndef ERGODASH_H
#define ERGODASH_H
#include "quantum.h"
#ifdef KEYBOARD_ergodash_rev1
#include "rev1.h"
#endif
// Used to create a keymap using only KC_ prefixed keys
#define LAYOUT_kc( \
L00, L01, L02, L03, L04, L05, L06, R00, R01, R02, R03, R04, R05, R06, \
L10, L11, L12, L13, L14, L15, L16, R10, R11, R12, R13, R14, R15, R16, \
L20, L21, L22, L23, L24, L25, L26, R20, R21, R22, R23, R24, R25, R26, \
L30, L31, L32, L33, L34, L35, L36, R30, R31, R32, R33, R34, R35, R36, \
LT0, LT1, LT2, LT3, LT4, LT5, RT0, RT1, RT2, RT3, RT4, RT5 \
) \
LAYOUT( \
KC_##L00, KC_##L01, KC_##L02, KC_##L03, KC_##L04, KC_##L05, KC_##L06, KC_##R00, KC_##R01, KC_##R02, KC_##R03, KC_##R04, KC_##R05, KC_##R06, \
KC_##L10, KC_##L11, KC_##L12, KC_##L13, KC_##L14, KC_##L15, KC_##L16, KC_##R10, KC_##R11, KC_##R12, KC_##R13, KC_##R14, KC_##R15, KC_##R16, \
KC_##L20, KC_##L21, KC_##L22, KC_##L23, KC_##L24, KC_##L25, KC_##L26, KC_##R20, KC_##R21, KC_##R22, KC_##R23, KC_##R24, KC_##R25, KC_##R26, \
KC_##L30, KC_##L31, KC_##L32, KC_##L33, KC_##L34, KC_##L35, KC_##L36, KC_##R30, KC_##R31, KC_##R32, KC_##R33, KC_##R34, KC_##R35, KC_##R36, \
KC_##LT0, KC_##LT1, KC_##LT2, KC_##LT3, KC_##LT4, KC_##LT5, KC_##RT0, KC_##RT1, KC_##RT2, KC_##RT3, KC_##RT4, KC_##RT5 \
)
#define KC_LAYOUT_ortho_5x14 KC_KEYMAP
#endif

162
keyboards/ergodash/i2c.c
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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"
#ifdef USE_I2C
// 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);
}
#endif

49
keyboards/ergodash/i2c.h
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#ifndef I2C_H
#define I2C_H
#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);
static inline unsigned char i2c_start_read(unsigned char addr) {
return i2c_master_start((addr << 1) | I2C_READ);
}
static inline unsigned char i2c_start_write(unsigned char addr) {
return i2c_master_start((addr << 1) | I2C_WRITE);
}
// from SSD1306 scrips
extern unsigned char i2c_rep_start(unsigned char addr);
extern void i2c_start_wait(unsigned char addr);
extern unsigned char i2c_readAck(void);
extern unsigned char i2c_readNak(void);
extern unsigned char i2c_read(unsigned char ack);
#define i2c_read(ack) (ack) ? i2c_readAck() : i2c_readNak();
#endif

44
keyboards/ergodash/keymaps/default/config.h
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/*
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_SERIAL
// #define USE_I2C
/* Select hand configuration */
#define MASTER_LEFT
// #define MASTER_RIGHT
// #define EE_HANDS
#endif
#undef RGBLED_NUM
#define RGBLIGHT_ANIMATIONS
#define RGBLED_NUM 24
#define RGBLIGHT_HUE_STEP 10
#define RGBLIGHT_SAT_STEP 17
#define RGBLIGHT_VAL_STEP 17

163
keyboards/ergodash/keymaps/default/keymap.c
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#include QMK_KEYBOARD_H
#include "action_layer.h"
#include "eeconfig.h"
extern keymap_config_t keymap_config;
#define _QWERTY 0
#define _LOWER 1
#define _RAISE 2
#define _ADJUST 16
enum custom_keycodes {
QWERTY = SAFE_RANGE,
LOWER,
RAISE,
ADJUST,
};
// Fillers to make layering more clear
#define KC_ KC_TRNS
#define _______ KC_TRNS
#define XXXXXXX KC_NO
#define KC_AJST ADJUST
#define KC_LOWR LOWER
#define KC_RASE RAISE
#define KC_JPN LALT(KC_GRV)
const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
/* Qwerty
* ,-------------------------------------------------------------------------------------------------.
* | ESC | 1 | 2 | 3 | 4 | 5 | [ | ] | 6 | 7 | 8 | 9 | 0 | Caps |
* |------+------+------+------+------+------+------+------+------+------+------+------+------+------|
* | ` | Q | W | E | R | T | - | = | Y | U | I | O | P | \ |
* |------+------+------+------+------+------+------+------+------+------+------+------+------+------|
* | Tab | A | S | D | F | G | Del | Bksp | H | J | K | L | ; | " |
* |------+------+------+------+------+------+-------------+------+------+------+------+------+------|
* | Shift| Z | X | C | V | B | JPN | Enter| N | M | , | . | / | Shift|
* `-------------+------+------+------+------+------+------+------+------+------+------+-------------'
* | Ctrl | GUI | ALt |Adjust| |Lower | Space |Enter |Raise| | Left| Down | Up | Right|
* ,-------------------------------------------------------------------------------------------------.
*/
[_QWERTY] = LAYOUT( \
KC_ESC, KC_1, KC_2, KC_3, KC_4, KC_5, KC_LBRC, KC_RBRC, KC_6, KC_7, KC_8, KC_9, KC_0, KC_CAPS, \
KC_GRV, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_MINS, KC_EQL , KC_Y, KC_U, KC_I, KC_O, KC_P, KC_BSLS, \
KC_TAB, KC_A, KC_S, KC_D, KC_F, KC_G, KC_DEL , KC_BSPC, 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_JPN , KC_ENT , KC_N, KC_M, KC_COMM, KC_DOT, KC_SLSH, KC_RSFT, \
KC_LCTL, KC_LGUI, KC_LALT, KC_AJST, KC_LOWR, KC_SPC , KC_ENT , KC_RASE, KC_LEFT, KC_DOWN, KC_UP, KC_RGHT \
),
/* Lower
* ,-------------------------------------------------------------------------------------------------.
* | F11 | F1 | F2 | F3 | F4 | F5 | { | } | F6 | F7 | F8 | F9 | F10 | F12 |
* |------+------+------+------+------+------+------+------+------+------+------+------+------+------|
* | ~ | ! | @ | # | $ | % | _ | + | ^ | & | * | ( | ) | | |
* |------+------+------+------+------+------+------+------+------+------+------+------+------+------|
* | Tab | A | S | D | F | G | Del | Bksp | H | J | K | L | : | " |
* |------+------+------+------+------+------+-------------+------+------+------+------+------+------|
* | Shift| Z | X | C | V | B | JPN | Enter| N | M | < | > | ? | Shift|
* `-------------+------+------+------+------+------+------+------+------+------+------+-------------'
* | Ctrl | GUI | ALt |Adjust| |Lower | Space |Enter |Raise| | Home |PageDn|PageUp| End |
* ,-------------------------------------------------------------------------------------------------.
*/
[_LOWER] = LAYOUT(
KC_F11, KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_LCBR, KC_RCBR, KC_F6, KC_F7, KC_F8, KC_F9, KC_F10, KC_F12, \
KC_TILD, KC_EXLM, KC_AT, KC_HASH, KC_DLR, KC_PERC, KC_UNDS, KC_PLUS, KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_PIPE, \
KC_TAB, KC_1, KC_2, KC_3, KC_4, KC_5, KC_DEL , KC_BSPC, KC_H, KC_J, KC_K, KC_L, KC_COLN, KC_DQT , \
KC_LSFT, KC_6, KC_7, KC_8, KC_9, KC_0, KC_JPN , KC_ENT , KC_N, KC_M, KC_LT, KC_GT, KC_QUES, KC_RSFT, \
KC_LCTL, KC_LGUI, KC_LALT, KC_AJST, KC_LOWR, KC_SPC , KC_ENT , KC_RASE, KC_HOME, KC_PGDN, KC_PGUP, KC_END \
),
/* Raise
* ,-------------------------------------------------------------------------------------------------.
* | F11 | F1 | F2 | F3 | F4 | F5 | { | } | F6 | F7 | F8 | F9 | F10 | F12 |
* |------+------+------+------+------+------+------+------+------+------+------+------+------+------|
* | ~ | ! | @ | # | $ | % | _ | + | ^ | & | * | ( | ) | | |
* |------+------+------+------+------+------+------+------+------+------+------+------+------+------|
* | Tab | A | S | D | F | G | Del | Bksp | H | J | K | L | : | " |
* |------+------+------+------+------+------+-------------+------+------+------+------+------+------|
* | Shift| Z | X | C | V | B | JPN | Enter| N | M | < | > | ? | Shift|
* `-------------+------+------+------+------+------+------+------+------+------+------+-------------'
* | Ctrl | GUI | ALt |Adjust| |Lower | Space |Enter |Raise| | Home |PageDn|PageUp| End |
* ,-------------------------------------------------------------------------------------------------.
*/
[_RAISE] = LAYOUT(
KC_F11, KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_LCBR, KC_RCBR, KC_F6, KC_F7, KC_F8, KC_F9, KC_F10, KC_F12, \
KC_TILD, KC_EXLM, KC_AT, KC_HASH, KC_DLR, KC_PERC, KC_UNDS, KC_PLUS, KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_PIPE, \
KC_TAB, KC_1, KC_2, KC_3, KC_4, KC_5, KC_DEL , KC_BSPC, KC_H, KC_J, KC_K, KC_L, KC_COLN, KC_DQT , \
KC_LSFT, KC_6, KC_7, KC_8, KC_9, KC_0, KC_JPN , KC_ENT , KC_N, KC_M, KC_LT, KC_GT, KC_QUES, KC_RSFT, \
KC_LCTL, KC_LGUI, KC_LALT, KC_AJST, KC_LOWR, KC_SPC , KC_ENT , KC_RASE, KC_HOME, KC_PGDN, KC_PGUP, KC_END \
),
/* Adjust
* ,-------------------------------------------------------------------------------------------------.
* | | | | | | | | | | | | | | |
* |------+------+------+------+------+------+------+------+------+------+------+------+------+------|
* | | Reset|RGB ON| MODE| HUE-| HUE+| | | SAT-| SAT+| VAL-| VAL+| | |
* |------+------+------+------+------+------+------+------+------+------+------+------+------+------|
* | | | | | | | | | | | | | | |
* |------+------+------+------+------+------+-------------+------+------+------+------+------+------|
* | | | | | | | | | | | | | | |
* `-------------+------+------+------+------+------+------+------+------+------+------+-------------'
* | | | | | | | | | | | | | | |
* ,-------------------------------------------------------------------------------------------------.
*/
[_ADJUST] = LAYOUT(
_______, _______, _______, _______, _______, _______,_______, _______, _______, _______, _______, _______, _______, _______, \
_______, RESET , RGB_TOG, RGB_MOD, RGB_HUD, RGB_HUI,_______, _______, RGB_SAD, RGB_SAI, RGB_VAD, RGB_VAI, _______, _______, \
_______, _______, _______, _______, _______, _______,_______, _______, _______, _______, _______, _______, _______, _______, \
_______, _______, _______, _______, _______, _______,_______, _______, _______, _______, _______, _______, _______, _______, \
_______, _______, _______, _______, _______,_______, _______, _______, _______, _______, _______, _______ \
)
};
#ifdef AUDIO_ENABLE
float tone_qwerty[][2] = SONG(QWERTY_SOUND);
#endif
void persistent_default_layer_set(uint16_t default_layer) {
eeconfig_update_default_layer(default_layer);
default_layer_set(default_layer);
}
bool process_record_user(uint16_t keycode, keyrecord_t *record) {
switch (keycode) {
case QWERTY:
if (record->event.pressed) {
print("mode just switched to qwerty and this is a huge string\n");
set_single_persistent_default_layer(_QWERTY);
}
return false;
break;
case LOWER:
if (record->event.pressed) {
layer_on(_LOWER);
update_tri_layer(_LOWER, _RAISE, _ADJUST);
} else {
layer_off(_LOWER);
update_tri_layer(_LOWER, _RAISE, _ADJUST);
}
return false;
break;
case RAISE:
if (record->event.pressed) {
layer_on(_RAISE);
update_tri_layer(_LOWER, _RAISE, _ADJUST);
} else {
layer_off(_RAISE);
update_tri_layer(_LOWER, _RAISE, _ADJUST);
}
return false;
break;
case ADJUST:
if (record->event.pressed) {
layer_on(_ADJUST);
} else {
layer_off(_ADJUST);
}
return false;
break;
}
return true;
}

0
keyboards/ergodash/keymaps/default/rules.mk
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460
keyboards/ergodash/matrix.c
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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/>.
*/
/*
* scan matrix
*/
#include <stdint.h>
#include <stdbool.h>
#include <avr/io.h>
#include "wait.h"
#include "print.h"
#include "debug.h"
#include "util.h"
#include "matrix.h"
#include "split_util.h"
#include "pro_micro.h"
#include "config.h"
#include "timer.h"
#ifdef USE_I2C
# include "i2c.h"
#else // USE_SERIAL
# include "serial.h"
#endif
#ifndef DEBOUNCING_DELAY
# define DEBOUNCING_DELAY 5
#endif
#if (DEBOUNCING_DELAY > 0)
static uint16_t debouncing_time;
static bool debouncing = false;
#endif
#if (MATRIX_COLS <= 8)
# define print_matrix_header() print("\nr/c 01234567\n")
# define print_matrix_row(row) print_bin_reverse8(matrix_get_row(row))
# define matrix_bitpop(i) bitpop(matrix[i])
# define ROW_SHIFTER ((uint8_t)1)
#else
# error "Currently only supports 8 COLS"
#endif
static matrix_row_t matrix_debouncing[MATRIX_ROWS];
#define ERROR_DISCONNECT_COUNT 5
#define ROWS_PER_HAND (MATRIX_ROWS/2)
static uint8_t error_count = 0;
static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
static const uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
/* matrix state(1:on, 0:off) */
static matrix_row_t matrix[MATRIX_ROWS];
static matrix_row_t matrix_debouncing[MATRIX_ROWS];
#if (DIODE_DIRECTION == COL2ROW)
static void init_cols(void);
static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row);
static void unselect_rows(void);
static void select_row(uint8_t row);
static void unselect_row(uint8_t row);
#elif (DIODE_DIRECTION == ROW2COL)
static void init_rows(void);
static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col);
static void unselect_cols(void);
static void unselect_col(uint8_t col);
static void select_col(uint8_t col);
#endif
__attribute__ ((weak))
void matrix_init_kb(void) {
matrix_init_user();
}
__attribute__ ((weak))
void matrix_scan_kb(void) {
matrix_scan_user();
}
__attribute__ ((weak))
void matrix_init_user(void) {
}
__attribute__ ((weak))
void matrix_scan_user(void) {
}
inline
uint8_t matrix_rows(void)
{
return MATRIX_ROWS;
}
inline
uint8_t matrix_cols(void)
{
return MATRIX_COLS;
}
void matrix_init(void)
{
debug_enable = true;
debug_matrix = true;
debug_mouse = true;
// initialize row and col
#if (DIODE_DIRECTION == COL2ROW)
unselect_rows();
init_cols();
#elif (DIODE_DIRECTION == ROW2COL)
unselect_cols();
init_rows();
#endif
TX_RX_LED_INIT;
// initialize matrix state: all keys off
for (uint8_t i=0; i < MATRIX_ROWS; i++) {
matrix[i] = 0;
matrix_debouncing[i] = 0;
}
matrix_init_quantum();
}
uint8_t _matrix_scan(void)
{
int offset = isLeftHand ? 0 : (ROWS_PER_HAND);
#if (DIODE_DIRECTION == COL2ROW)
// Set row, read cols
for (uint8_t current_row = 0; current_row < ROWS_PER_HAND; current_row++) {
# if (DEBOUNCING_DELAY > 0)
bool matrix_changed = read_cols_on_row(matrix_debouncing+offset, current_row);
if (matrix_changed) {
debouncing = true;
debouncing_time = timer_read();
PORTD ^= (1 << 2);
}
# else
read_cols_on_row(matrix+offset, current_row);
# endif
}
#elif (DIODE_DIRECTION == ROW2COL)
// Set col, read rows
for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
# if (DEBOUNCING_DELAY > 0)
bool matrix_changed = read_rows_on_col(matrix_debouncing+offset, current_col);
if (matrix_changed) {
debouncing = true;
debouncing_time = timer_read();
}
# else
read_rows_on_col(matrix+offset, current_col);
# endif
}
#endif
# if (DEBOUNCING_DELAY > 0)
if (debouncing && (timer_elapsed(debouncing_time) > DEBOUNCING_DELAY)) {
for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
matrix[i+offset] = matrix_debouncing[i+offset];
}
debouncing = false;
}
# endif
return 1;
}
#ifdef USE_I2C
// Get rows from other half over i2c
int i2c_transaction(void) {
int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
int err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_WRITE);
if (err) goto i2c_error;
// start of matrix stored at 0x00
err = i2c_master_write(0x00);
if (err) goto i2c_error;
// Start read
err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_READ);
if (err) goto i2c_error;
if (!err) {
int i;
for (i = 0; i < ROWS_PER_HAND-1; ++i) {
matrix[slaveOffset+i] = i2c_master_read(I2C_ACK);
}
matrix[slaveOffset+i] = i2c_master_read(I2C_NACK);
i2c_master_stop();
} else {
i2c_error: // the cable is disconnceted, or something else went wrong
i2c_reset_state();
return err;
}
return 0;
}
#else // USE_SERIAL
int serial_transaction(void) {
int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
if (serial_update_buffers()) {
return 1;
}
for (int i = 0; i < ROWS_PER_HAND; ++i) {
matrix[slaveOffset+i] = serial_slave_buffer[i];
}
return 0;
}
#endif
uint8_t matrix_scan(void)
{
uint8_t ret = _matrix_scan();
#ifdef USE_I2C
if( i2c_transaction() ) {
#else // USE_SERIAL
if( serial_transaction() ) {
#endif
// turn on the indicator led when halves are disconnected
TXLED1;
error_count++;
if (error_count > ERROR_DISCONNECT_COUNT) {
// reset other half if disconnected
int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
for (int i = 0; i < ROWS_PER_HAND; ++i) {
matrix[slaveOffset+i] = 0;
}
}
} else {
// turn off the indicator led on no error
TXLED0;
error_count = 0;
}
matrix_scan_quantum();
return ret;
}
void matrix_slave_scan(void) {
_matrix_scan();
int offset = (isLeftHand) ? 0 : ROWS_PER_HAND;
#ifdef USE_I2C
for (int i = 0; i < ROWS_PER_HAND; ++i) {
i2c_slave_buffer[i] = matrix[offset+i];
}
#else // USE_SERIAL
for (int i = 0; i < ROWS_PER_HAND; ++i) {
serial_slave_buffer[i] = matrix[offset+i];
}
#endif
}
bool matrix_is_modified(void)
{
if (debouncing) return false;
return true;
}
inline
bool matrix_is_on(uint8_t row, uint8_t col)
{
return (matrix[row] & ((matrix_row_t)1<<col));
}
inline
matrix_row_t matrix_get_row(uint8_t row)
{
return matrix[row];
}
void matrix_print(void)
{
print("\nr/c 0123456789ABCDEF\n");
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
phex(row); print(": ");
pbin_reverse16(matrix_get_row(row));
print("\n");
}
}
uint8_t matrix_key_count(void)
{
uint8_t count = 0;
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
count += bitpop16(matrix[i]);
}
return count;
}
#if (DIODE_DIRECTION == COL2ROW)
static void init_cols(void)
{
for(uint8_t x = 0; x < MATRIX_COLS; x++) {
uint8_t pin = col_pins[x];
_SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
_SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
}
}
static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
{
// Store last value of row prior to reading
matrix_row_t last_row_value = current_matrix[current_row];
// Clear data in matrix row
current_matrix[current_row] = 0;
// Select row and wait for row selecton to stabilize
select_row(current_row);
wait_us(30);
// For each col...
for(uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
// Select the col pin to read (active low)
uint8_t pin = col_pins[col_index];
uint8_t pin_state = (_SFR_IO8(pin >> 4) & _BV(pin & 0xF));
// Populate the matrix row with the state of the col pin
current_matrix[current_row] |= pin_state ? 0 : (ROW_SHIFTER << col_index);
}
// Unselect row
unselect_row(current_row);
return (last_row_value != current_matrix[current_row]);
}
static void select_row(uint8_t row)
{
uint8_t pin = row_pins[row];
_SFR_IO8((pin >> 4) + 1) |= _BV(pin & 0xF); // OUT
_SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW
}
static void unselect_row(uint8_t row)
{
uint8_t pin = row_pins[row];
_SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
_SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
}
static void unselect_rows(void)
{
for(uint8_t x = 0; x < ROWS_PER_HAND; x++) {
uint8_t pin = row_pins[x];
_SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
_SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
}
}
#elif (DIODE_DIRECTION == ROW2COL)
static void init_rows(void)
{
for(uint8_t x = 0; x < ROWS_PER_HAND; x++) {
uint8_t pin = row_pins[x];
_SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
_SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
}
}
static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col)
{
bool matrix_changed = false;
// Select col and wait for col selecton to stabilize
select_col(current_col);
wait_us(30);
// For each row...
for(uint8_t row_index = 0; row_index < ROWS_PER_HAND; row_index++)
{
// Store last value of row prior to reading
matrix_row_t last_row_value = current_matrix[row_index];
// Check row pin state
if ((_SFR_IO8(row_pins[row_index] >> 4) & _BV(row_pins[row_index] & 0xF)) == 0)
{
// Pin LO, set col bit
current_matrix[row_index] |= (ROW_SHIFTER << current_col);
}
else
{
// Pin HI, clear col bit
current_matrix[row_index] &= ~(ROW_SHIFTER << current_col);
}
// Determine if the matrix changed state
if ((last_row_value != current_matrix[row_index]) && !(matrix_changed))
{
matrix_changed = true;
}
}
// Unselect col
unselect_col(current_col);
return matrix_changed;
}
static void select_col(uint8_t col)
{
uint8_t pin = col_pins[col];
_SFR_IO8((pin >> 4) + 1) |= _BV(pin & 0xF); // OUT
_SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW
}
static void unselect_col(uint8_t col)
{
uint8_t pin = col_pins[col];
_SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
_SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
}
static void unselect_cols(void)
{
for(uint8_t x = 0; x < MATRIX_COLS; x++) {
uint8_t pin = col_pins[x];
_SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
_SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
}
}
#endif

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keyboards/ergodash/readme.md
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# ErgoDash
![ErgoDash](https://i.imgur.com/ZyI592o.jpg)
Keyboard Maintainer: [omkbd](https://github.com/omkbd) [@omkbd](https://twitter.com/omkbd)
Hardware Supported: ErgoDash PCB, Pro Micro ATmega32u4
Hardware Availability: In preparation
Make example for this keyboard (after setting up your build environment):
make ergodash/rev1:default
See [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) then the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information.

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keyboards/ergodash/rev1/config.h
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/*
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 REV1_CONFIG_H
#define REV1_CONFIG_H
#include "config_common.h"
/* USB Device descriptor parameter */
#define VENDOR_ID 0xFEED
#define PRODUCT_ID 0x6060
#define DEVICE_VER 0x0100
#define MANUFACTURER Omkbd
#define PRODUCT ErgoDash
#define DESCRIPTION Power
/* key matrix size */
// Rows are doubled-up
#define MATRIX_ROWS 10
#define MATRIX_COLS 7
// wiring of each half
#define MATRIX_ROW_PINS { D7, E6, B4, B5, D4 }
#define MATRIX_COL_PINS { F5, F6, F7, B1, B3, B2, B6 }
// #define MATRIX_COL_PINS { B6, B2, B3, B1, F7, F6 } //uncomment this line and comment line above if you need to reverse left-to-right key order
/* define tapping term */
#define TAPPING_TERM 120
/* define if matrix has ghost */
//#define MATRIX_HAS_GHOST
/* number of backlight levels */
// #define BACKLIGHT_LEVELS 3
/* Set 0 if debouncing isn't needed */
#define DEBOUNCING_DELAY 5
/* 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
/* key combination for command */
#define IS_COMMAND() ( \
keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
)
/* ws2812 RGB LED */
#define RGB_DI_PIN D3
#define RGBLIGHT_TIMER
#define RGBLED_NUM 24 // Number of LEDs
#define ws2812_PORTREG PORTD
#define ws2812_DDRREG DDRD
/*
* Feature disable options
* These options are also useful to firmware size reduction.
*/
/* disable debug print */
// #define NO_DEBUG
/* disable print */
// #define NO_PRINT
/* disable action features */
//#define NO_ACTION_LAYER
//#define NO_ACTION_TAPPING
//#define NO_ACTION_ONESHOT
//#define NO_ACTION_MACRO
//#define NO_ACTION_FUNCTION
#endif

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keyboards/ergodash/rev1/rev1.c
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#include "ergodash.h"
#ifdef AUDIO_ENABLE
float tone_startup[][2] = SONG(STARTUP_SOUND);
float tone_goodbye[][2] = SONG(GOODBYE_SOUND);
#endif
#ifdef SSD1306OLED
void led_set_kb(uint8_t usb_led) {
// put your keyboard LED indicator (ex: Caps Lock LED) toggling code here
led_set_user(usb_led);
}
#endif
void matrix_init_kb(void) {
#ifdef AUDIO_ENABLE
_delay_ms(20); // gets rid of tick
PLAY_SONG(tone_startup);
#endif
// // green led on
// DDRD |= (1<<5);
// PORTD &= ~(1<<5);
// // orange led on
// DDRB |= (1<<0);
// PORTB &= ~(1<<0);
matrix_init_user();
};
void shutdown_user(void) {
#ifdef AUDIO_ENABLE
PLAY_SONG(tone_goodbye);
_delay_ms(150);
stop_all_notes();
#endif
}

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keyboards/ergodash/rev1/rev1.h
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#ifndef REV1_H
#define REV1_H
#include "ergodash.h"
//void promicro_bootloader_jmp(bool program);
#include "quantum.h"
#ifdef USE_I2C
#include <stddef.h>
#ifdef __AVR__
#include <avr/io.h>
#include <avr/interrupt.h>
#endif
#endif
//void promicro_bootloader_jmp(bool program);
#ifndef FLIP_HALF
// Standard Keymap
// (TRRS jack on the left half is to the right, TRRS jack on the right half is to the left)
#define LAYOUT( \
L00, L01, L02, L03, L04, L05, L06, R00, R01, R02, R03, R04, R05, R06, \
L10, L11, L12, L13, L14, L15, L16, R10, R11, R12, R13, R14, R15, R16, \
L20, L21, L22, L23, L24, L25, L26, R20, R21, R22, R23, R24, R25, R26, \
L30, L31, L32, L33, L34, L35, L36, R30, R31, R32, R33, R34, R35, R36, \
LT0, LT1, LT2, LT3, LT4, LT5, RT0, RT1, RT2, RT3, RT4, RT5 \
) \
{ \
{ L00, L01, L02, L03, L04, L05, L06 }, \
{ L10, L11, L12, L13, L14, L15, L16 }, \
{ L20, L21, L22, L23, L24, L25, L26 }, \
{ L30, L31, L32, L33, L34, L35, L36 }, \
{ LT0, LT1, LT2, LT3, LT4, LT5, KC_NO}, \
{ R06, R05, R04, R03, R02, R01, R00 }, \
{ R16, R15, R14, R13, R12, R11, R10 }, \
{ R26, R25, R24, R23, R22, R21, R20 }, \
{ R36, R35, R34, R33, R32, R31, R30 }, \
{ RT5, RT4, RT3, RT2, RT1, RT0, KC_NO} \
}
#else
// Keymap with right side flipped
// (TRRS jack on both halves are to the right)
#define LAYOUT( \
L00, L01, L02, L03, L04, L05, L06, R00, R01, R02, R03, R04, R05, R06, \
L10, L11, L12, L13, L14, L15, L16, R10, R11, R12, R13, R14, R15, R16, \
L20, L21, L22, L23, L24, L25, L26, R20, R21, R22, R23, R24, R25, R26, \
L30, L31, L32, L33, L34, L35, L36, R30, R31, R32, R33, R34, R35, R36, \
LT0, LT1, LT2, LT3, LT4, LT5, RT0, RT1, RT2, RT3, RT4, RT5 \
) \
{ \
{ L00, L01, L02, L03, L04, L05, L06 }, \
{ L10, L11, L12, L13, L14, L15, L16 }, \
{ L20, L21, L22, L23, L24, L25, L26 }, \
{ L30, L31, L32, L33, L34, L35, L36 }, \
{ LT0, LT1, LT2, LT3, LT4, LT, KC_NO}, \
{ R00, R01, R02, R03, R04, R05, R06 }, \
{ R10, R11, R12, R13, R14, R15, R16 }, \
{ R20, R21, R22, R23, R24, R25, R26 }, \
{ R30, R31, R32, R33, R34, R35, R36 }, \
{ RT0, RT1, RT2, RT3, RT4, RT5, KC_NO} \
}
#endif
#endif

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keyboards/ergodash/rev1/rules.mk
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BACKLIGHT_ENABLE = no

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keyboards/ergodash/rules.mk
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SRC += matrix.c \
i2c.c \
split_util.c \
serial.c \
ssd1306.c
# MCU name
#MCU = at90usb1287
MCU = atmega32u4
# 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
#
# LUFA specific
#
# Target architecture (see library "Board Types" documentation).
ARCH = AVR8
# 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)
# Interrupt driven control endpoint task(+60)
OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
# Bootloader
# This definition is optional, and if your keyboard supports multiple bootloaders of
# different sizes, comment this out, and the correct address will be loaded
# automatically (+60). See bootloader.mk for all options.
BOOTLOADER = caterina
# 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 = no # 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 = 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. Do not enable this with audio at the same time.
SUBPROJECT_rev1 = yes
USE_I2C = yes
# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
SLEEP_LED_ENABLE = no # Breathing sleep LED during USB suspend
CUSTOM_MATRIX = yes
LAYOUTS = ortho_5x14
DEFAULT_FOLDER = ergodash/rev1

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/*
* WARNING: be careful changing this code, it is very timing dependent
*/
#ifndef F_CPU
#define F_CPU 16000000
#endif
#include <avr/io.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include <stdbool.h>
#include "serial.h"
#ifndef USE_I2C
// Serial pulse period in microseconds. Its probably a bad idea to lower this
// value.
#define SERIAL_DELAY 24
uint8_t volatile serial_slave_buffer[SERIAL_SLAVE_BUFFER_LENGTH] = {0};
uint8_t volatile serial_master_buffer[SERIAL_MASTER_BUFFER_LENGTH] = {0};
#define SLAVE_DATA_CORRUPT (1<<0)
volatile uint8_t status = 0;
inline static
void serial_delay(void) {
_delay_us(SERIAL_DELAY);
}
inline static
void serial_output(void) {
SERIAL_PIN_DDR |= SERIAL_PIN_MASK;
}
// make the serial pin an input with pull-up resistor
inline static
void serial_input(void) {
SERIAL_PIN_DDR &= ~SERIAL_PIN_MASK;
SERIAL_PIN_PORT |= SERIAL_PIN_MASK;
}
inline static
uint8_t serial_read_pin(void) {
return !!(SERIAL_PIN_INPUT & SERIAL_PIN_MASK);
}
inline static
void serial_low(void) {
SERIAL_PIN_PORT &= ~SERIAL_PIN_MASK;
}
inline static
void serial_high(void) {
SERIAL_PIN_PORT |= SERIAL_PIN_MASK;
}
void serial_master_init(void) {
serial_output();
serial_high();
}
void serial_slave_init(void) {
serial_input();
// Enable INT0
EIMSK |= _BV(INT0);
// Trigger on falling edge of INT0
EICRA &= ~(_BV(ISC00) | _BV(ISC01));
}
// Used by the master to synchronize timing with the slave.
static
void sync_recv(void) {
serial_input();
// This shouldn't hang if the slave disconnects because the
// serial line will float to high if the slave does disconnect.
while (!serial_read_pin());
serial_delay();
}
// Used by the slave to send a synchronization signal to the master.
static
void sync_send(void) {
serial_output();
serial_low();
serial_delay();
serial_high();
}
// Reads a byte from the serial line
static
uint8_t serial_read_byte(void) {
uint8_t byte = 0;
serial_input();
for ( uint8_t i = 0; i < 8; ++i) {
byte = (byte << 1) | serial_read_pin();
serial_delay();
_delay_us(1);
}
return byte;
}
// Sends a byte with MSB ordering
static
void serial_write_byte(uint8_t data) {
uint8_t b = 8;
serial_output();
while( b-- ) {
if(data & (1 << b)) {
serial_high();
} else {
serial_low();
}
serial_delay();
}
}
// interrupt handle to be used by the slave device
ISR(SERIAL_PIN_INTERRUPT) {
sync_send();
uint8_t checksum = 0;
for (int i = 0; i < SERIAL_SLAVE_BUFFER_LENGTH; ++i) {
serial_write_byte(serial_slave_buffer[i]);
sync_send();
checksum += serial_slave_buffer[i];
}
serial_write_byte(checksum);
sync_send();
// wait for the sync to finish sending
serial_delay();
// read the middle of pulses
_delay_us(SERIAL_DELAY/2);
uint8_t checksum_computed = 0;
for (int i = 0; i < SERIAL_MASTER_BUFFER_LENGTH; ++i) {
serial_master_buffer[i] = serial_read_byte();
sync_send();
checksum_computed += serial_master_buffer[i];
}
uint8_t checksum_received = serial_read_byte();
sync_send();
serial_input(); // end transaction
if ( checksum_computed != checksum_received ) {
status |= SLAVE_DATA_CORRUPT;
} else {
status &= ~SLAVE_DATA_CORRUPT;
}
}
inline
bool serial_slave_DATA_CORRUPT(void) {
return status & SLAVE_DATA_CORRUPT;
}
// Copies the serial_slave_buffer to the master and sends the
// serial_master_buffer to the slave.
//
// Returns:
// 0 => no error
// 1 => slave did not respond
int serial_update_buffers(void) {
// this code is very time dependent, so we need to disable interrupts
cli();
// signal to the slave that we want to start a transaction
serial_output();
serial_low();
_delay_us(1);
// wait for the slaves response
serial_input();
serial_high();
_delay_us(SERIAL_DELAY);
// check if the slave is present
if (serial_read_pin()) {
// slave failed to pull the line low, assume not present
sei();
return 1;
}
// if the slave is present syncronize with it
sync_recv();
uint8_t checksum_computed = 0;
// receive data from the slave
for (int i = 0; i < SERIAL_SLAVE_BUFFER_LENGTH; ++i) {
serial_slave_buffer[i] = serial_read_byte();
sync_recv();
checksum_computed += serial_slave_buffer[i];
}
uint8_t checksum_received = serial_read_byte();
sync_recv();
if (checksum_computed != checksum_received) {
sei();
return 1;
}
uint8_t checksum = 0;
// send data to the slave
for (int i = 0; i < SERIAL_MASTER_BUFFER_LENGTH; ++i) {
serial_write_byte(serial_master_buffer[i]);
sync_recv();
checksum += serial_master_buffer[i];
}
serial_write_byte(checksum);
sync_recv();
// always, release the line when not in use
serial_output();
serial_high();
sei();
return 0;
}
#endif

26
keyboards/ergodash/serial.h
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#ifndef MY_SERIAL_H
#define MY_SERIAL_H
#include "config.h"
#include <stdbool.h>
/* TODO: some defines for interrupt setup */
#define SERIAL_PIN_DDR DDRD
#define SERIAL_PIN_PORT PORTD
#define SERIAL_PIN_INPUT PIND
#define SERIAL_PIN_MASK _BV(PD0)
#define SERIAL_PIN_INTERRUPT INT0_vect
#define SERIAL_SLAVE_BUFFER_LENGTH MATRIX_ROWS/2
#define SERIAL_MASTER_BUFFER_LENGTH 1
// Buffers for master - slave communication
extern volatile uint8_t serial_slave_buffer[SERIAL_SLAVE_BUFFER_LENGTH];
extern volatile uint8_t serial_master_buffer[SERIAL_MASTER_BUFFER_LENGTH];
void serial_master_init(void);
void serial_slave_init(void);
int serial_update_buffers(void);
bool serial_slave_data_corrupt(void);
#endif

86
keyboards/ergodash/split_util.c
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#include <avr/io.h>
#include <avr/wdt.h>
#include <avr/power.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include <avr/eeprom.h>
#include "split_util.h"
#include "matrix.h"
#include "keyboard.h"
#include "config.h"
#include "timer.h"
#ifdef USE_I2C
# include "i2c.h"
#else
# include "serial.h"
#endif
volatile bool isLeftHand = true;
static void setup_handedness(void) {
#ifdef EE_HANDS
isLeftHand = eeprom_read_byte(EECONFIG_HANDEDNESS);
#else
// I2C_MASTER_RIGHT is deprecated, use MASTER_RIGHT instead, since this works for both serial and i2c
#if defined(I2C_MASTER_RIGHT) || defined(MASTER_RIGHT)
isLeftHand = !has_usb();
#else
isLeftHand = has_usb();
#endif
#endif
}
static void keyboard_master_setup(void) {
#ifdef USE_I2C
i2c_master_init();
#ifdef SSD1306OLED
matrix_master_OLED_init ();
#endif
#else
serial_master_init();
#endif
}
static void keyboard_slave_setup(void) {
timer_init();
#ifdef USE_I2C
i2c_slave_init(SLAVE_I2C_ADDRESS);
#else
serial_slave_init();
#endif
}
bool has_usb(void) {
USBCON |= (1 << OTGPADE); //enables VBUS pad
_delay_us(5);
return (USBSTA & (1<<VBUS)); //checks state of VBUS
}
void split_keyboard_setup(void) {
setup_handedness();
if (has_usb()) {
keyboard_master_setup();
} else {
keyboard_slave_setup();
}
sei();
}
void keyboard_slave_loop(void) {
matrix_init();
while (1) {
matrix_slave_scan();
}
}
// this code runs before the usb and keyboard is initialized
void matrix_setup(void) {
split_keyboard_setup();
if (!has_usb()) {
keyboard_slave_loop();
}
}

20
keyboards/ergodash/split_util.h
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#ifndef SPLIT_KEYBOARD_UTIL_H
#define SPLIT_KEYBOARD_UTIL_H
#include <stdbool.h>
#include "eeconfig.h"
#define SLAVE_I2C_ADDRESS 0x32
extern volatile bool isLeftHand;
// slave version of matix scan, defined in matrix.c
void matrix_slave_scan(void);
void split_keyboard_setup(void);
bool has_usb(void);
void keyboard_slave_loop(void);
void matrix_master_OLED_init (void);
#endif
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