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Merge remote-tracking branch 'origin/master' into develop

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QMK Bot 2021-04-18 15:52:15 +00:00
commit 99ce84827a
17 changed files with 644 additions and 55 deletions
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77
keyboards/ferris/0_1/matrix.c
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@ -72,40 +72,25 @@ uint8_t init_mcp23017(void) {
// - unused : input : 1
// - input : input : 1
// - driving : output : 0
mcp23017_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT);
if (mcp23017_status) goto out;
mcp23017_status = i2c_write(IODIRA, I2C_TIMEOUT);
if (mcp23017_status) goto out;
// This means: we will read all the bits on GPIOA
mcp23017_status = i2c_write(0b11111111, I2C_TIMEOUT);
if (mcp23017_status) goto out;
// This means: we will write to the pins 0-4 on GPIOB (in select_rows)
mcp23017_status = i2c_write(0b11110000, I2C_TIMEOUT);
if (mcp23017_status) goto out;
i2c_stop();
// set pull-up
// - unused : on : 1
// - input : on : 1
// - driving : off : 0
mcp23017_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT);
if (mcp23017_status) goto out;
mcp23017_status = i2c_write(GPPUA, I2C_TIMEOUT);
if (mcp23017_status) goto out;
// This means: we will read all the bits on GPIOA
mcp23017_status = i2c_write(0b11111111, I2C_TIMEOUT);
if (mcp23017_status) goto out;
// This means: we will write to the pins 0-4 on GPIOB (in select_rows)
mcp23017_status = i2c_write(0b11110000, I2C_TIMEOUT);
if (mcp23017_status) goto out;
out:
i2c_stop();
uint8_t buf[] = {IODIRA, 0b11111111, 0b11110000};
mcp23017_status = i2c_transmit(I2C_ADDR_WRITE, buf, sizeof(buf), I2C_TIMEOUT);
if (!mcp23017_status) {
// set pull-up
// - unused : on : 1
// - input : on : 1
// - driving : off : 0
// This means: we will read all the bits on GPIOA
// This means: we will write to the pins 0-4 on GPIOB (in select_rows)
uint8_t pullup_buf[] = {GPPUA, 0b11111111, 0b11110000};
mcp23017_status = i2c_transmit(I2C_ADDR_WRITE, pullup_buf, sizeof(pullup_buf), I2C_TIMEOUT);
}
return mcp23017_status;
}
/* matrix state(1:on, 0:off) */
static matrix_row_t matrix[MATRIX_ROWS]; // debounced values
static matrix_row_t matrix[MATRIX_ROWS]; // debounced values
static matrix_row_t read_cols(uint8_t row);
static void init_cols(void);
@ -124,7 +109,7 @@ void matrix_init_custom(void) {
// initialize matrix state: all keys off
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
matrix[i] = 0;
matrix[i] = 0;
}
}
@ -217,25 +202,18 @@ static matrix_row_t read_cols(uint8_t row) {
if (mcp23017_status) { // if there was an error
return 0;
} else {
uint8_t data = 0;
mcp23017_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT);
if (mcp23017_status) goto out;
mcp23017_status = i2c_write(GPIOA, I2C_TIMEOUT);
if (mcp23017_status) goto out;
mcp23017_status = i2c_start(I2C_ADDR_READ, I2C_TIMEOUT);
if (mcp23017_status) goto out;
mcp23017_status = i2c_read_nack(I2C_TIMEOUT);
if (mcp23017_status < 0) goto out;
uint8_t buf[] = {GPIOA};
mcp23017_status = i2c_transmit(I2C_ADDR_WRITE, buf, sizeof(buf), I2C_TIMEOUT);
// We read all the pins on GPIOA.
// The initial state was all ones and any depressed key at a given column for the currently selected row will have its bit flipped to zero.
// The return value is a row as represented in the generic matrix code were the rightmost bits represent the lower columns and zeroes represent non-depressed keys while ones represent depressed keys.
// Since the pins connected to eact columns are sequential, and counting from zero up (col 5 -> GPIOA0, col 6 -> GPIOA1 and so on), the only transformation needed is a bitwise not to swap all zeroes and ones.
data = ~((uint8_t)mcp23017_status);
mcp23017_status = I2C_STATUS_SUCCESS;
out:
i2c_stop();
// return reverse_bits(data, MATRIX_COLS_PER_SIDE);
return data;
uint8_t data[] = {0};
if (!mcp23017_status) {
mcp23017_status = i2c_receive(I2C_ADDR_READ, data, sizeof(data), I2C_TIMEOUT);
data[0] = ~(data[0]);
}
return data[0];
}
}
}
@ -266,17 +244,10 @@ static void select_row(uint8_t row) {
if (mcp23017_status) { // if there was an error
// do nothing
} else {
mcp23017_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT);
if (mcp23017_status) goto out;
mcp23017_status = i2c_write(GPIOB, I2C_TIMEOUT);
if (mcp23017_status) goto out;
// Select the desired row by writing a byte for the entire GPIOB bus where only the bit representing the row we want to select is a zero (write instruction) and every other bit is a one.
// Note that the row - MATRIX_ROWS_PER_SIDE reflects the fact that being on the right hand, the columns are numbered from MATRIX_ROWS_PER_SIDE to MATRIX_ROWS, but the pins we want to write to are indexed from zero up on the GPIOB bus.
mcp23017_status = i2c_write(0xFF & ~(1 << (row - MATRIX_ROWS_PER_SIDE)), I2C_TIMEOUT);
if (mcp23017_status) goto out;
out:
i2c_stop();
uint8_t buf[] = {GPIOB, 0xFF & ~(1 << (row - MATRIX_ROWS_PER_SIDE))};
mcp23017_status = i2c_transmit(I2C_ADDR_WRITE, buf, sizeof(buf), I2C_TIMEOUT);
}
}
}

17
keyboards/ferris/0_1/readme.md Normal file
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@ -0,0 +1,17 @@
# Ferris 0.1
![Ferris 0.1 - base, top view](https://i.imgur.com/s6nTn0Ch.jpg)
![Ferris 0.1 - base, bottom view](https://i.imgur.com/Ymlac2Ah.jpg)
An atmega32u4 based split 34 keys column staggered keyboard named and decorated after the rustlang mascott. All PCB files and some thoughts on the design are available on the [project's github page](https://github.com/pierrechevalier83/ferris)
* Keyboard Maintainer: [Pierre Chevalier](https://github.com/pierrechevalier83)
* Hardware Supported:
* Ferris 0.1: atmega32u4 chip. Comes in 4 variants: base, low, high and compact
* Hardware Availability: Pierre Chevalier has been selling keyboard kits (see the #ferris channel in the 40% discord chat). Wider availability is on the horizon.
Make examples for this keyboard (after setting up your build environment):
make ferris/0_1:default
See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).

17
keyboards/ferris/0_2/0_2.c Normal file
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@ -0,0 +1,17 @@
/*
Copyright 2020 Pierre Chevalier <pierrechevalier83@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/>.
*/
#include "0_2.h"

43
keyboards/ferris/0_2/0_2.h Normal file
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@ -0,0 +1,43 @@
/*
Copyright 2020 Pierre Chevalier <pierrechevalier83@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/>.
*/
#pragma once
#include "quantum.h"
// clang-format off
/* left hand right hand */
#define LAYOUT(\
K0_0, K0_1, K0_2, K0_3, K0_4, K0_5, K0_6, K0_7, K0_8, K0_9,\
K1_0, K1_1, K1_2, K1_3, K1_4, K1_5, K1_6, K1_7, K1_8, K1_9,\
K2_0, K2_1, K2_2, K2_3, K2_4, K2_5, K2_6, K2_7, K2_8, K2_9,\
K3_3, K3_4, K3_5, K3_6)\
/* matrix positions */\
{\
{K0_0, K0_1, K0_2, K0_3, K0_4},\
{K1_0, K1_1, K1_2, K1_3, K1_4},\
{K2_0, K2_1, K2_2, K2_3, K2_4},\
{KC_NO, KC_NO, KC_NO, K3_3, K3_4},\
\
{K0_5, K0_6, K0_7, K0_8, K0_9},\
{K1_5, K1_6, K1_7, K1_8, K1_9},\
{K2_5, K2_6, K2_7, K2_8, K2_9},\
{K3_5, K3_6, KC_NO, KC_NO, KC_NO}\
}
// clang-format on

40
keyboards/ferris/0_2/chconf.h Normal file
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@ -0,0 +1,40 @@
/* Copyright 2020 QMK
*
* 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/>.
*/
/*
* This file was auto-generated by:
* `qmk chibios-confmigrate -i keyboards/ferris/0_2/chconf.h -r platforms/chibios/common/configs/chconf.h`
*/
#pragma once
#define CH_CFG_ST_FREQUENCY 10000
#define CH_CFG_OPTIMIZE_SPEED FALSE
#define CH_CFG_USE_REGISTRY TRUE
#define CH_CFG_USE_WAITEXIT TRUE
#define CH_CFG_USE_CONDVARS TRUE
#define CH_CFG_USE_CONDVARS_TIMEOUT FALSE
#define CH_CFG_USE_MESSAGES TRUE
#define CH_CFG_USE_MAILBOXES TRUE
#include_next <chconf.h>

80
keyboards/ferris/0_2/config.h Normal file
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@ -0,0 +1,80 @@
/*
Copyright 2020 Pierre Chevalier <pierrechevalier83@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/>.
*/
#pragma once
/* USB Device descriptor parameter */
#define VENDOR_ID 0xC2AB
#define PRODUCT_ID 0x0001
#define DEVICE_VER 0x0002
#define MANUFACTURER Pierre
#define PRODUCT Ferris the keeb
/* key matrix size */
#define MATRIX_ROWS 8
#define MATRIX_COLS 10
#define MATRIX_ROWS_PER_SIDE (MATRIX_ROWS / 2)
#define MATRIX_COLS_PER_SIDE (MATRIX_COLS / 2)
#define UNUSED_MCU 24
#define UNUSED_MCP 7
// wiring
#define MATRIX_ROW_PINS_MCU \
{ B7, B6, B5, A2 }
#define MATRIX_COL_PINS_MCU \
{ B8, B4, B3, A15, A14 }
#define UNUSED_PINS_MCU \
{ A0, A1, A3, A4, A5, A6, A7, A8, A9, A10, A13, B0, B1, B2, B9, B12, B13, B14, B15, C13, C14, C15, F0, F1 }
#define MATRIX_ROW_PINS_MCP \
{ B0, B1, B2, B3 }
#define MATRIX_COL_PINS_MCP \
{ A0, A1, A2, A3, A4 }
#define UNUSED_PINS_MCP \
{ B4, B5, B6, B7, A5, A6, A7 }
#define MATRIX_ROW_PINS \
{ B7, B6, B5, A2, A0, A0, A0, A0 }
#define MATRIX_COL_PINS \
{ B8, B4, B3, A15, A14, A1, A1, A1, A1, A1 }
#define UNUSED_PINS \
{ A3, A4, A5, A6, A7, A8, A9, A10, A13, B0, B1, B2, B9, B12, B13, B14, B15, C13, C14, C15, F0, F1 }
/* COL2ROW, ROW2COL*/
#define DIODE_DIRECTION COL2ROW
/* define if matrix has ghost (lacks anti-ghosting diodes) */
//#define MATRIX_HAS_GHOST
/* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
#define DEBOUNCE 5
/* i2c settings */
#define I2C_DRIVER I2CD2
#define I2C1_SCL_BANK GPIOB
#define I2C1_SCL 10
#define I2C1_SDA_BANK GPIOB
#define I2C1_SDA 11
#define I2C1_TIMINGR_PRESC 2U
#define I2C1_TIMINGR_SCLDEL 1U
#define I2C1_TIMINGR_SDADEL 0U
#define I2C1_TIMINGR_SCLH 9U
#define I2C1_TIMINGR_SCLL 26U
#define I2C1_SCL_PAL_MODE 1
#define I2C1_SDA_PAL_MODE 1

30
keyboards/ferris/0_2/halconf.h Normal file
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@ -0,0 +1,30 @@
/* Copyright 2020 QMK
*
* 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/>.
*/
/*
* This file was auto-generated by:
* `qmk chibios-confmigrate -i keyboards/ferris/0_2/halconf.h -r platforms/chibios/common/configs/halconf.h`
*/
#pragma once
#define HAL_USE_I2C TRUE
#define HAL_USE_PWM TRUE
#define HAL_USE_SPI TRUE
#include_next <halconf.h>

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keyboards/ferris/0_2/matrix.c Normal file
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@ -0,0 +1,255 @@
/*
Copyright 2013 Oleg Kostyuk <cub.uanic@gmail.com>
2020 Pierre Chevalier <pierrechevalier83@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/>.
*/
/*
* This code was heavily inspired by the ergodox_ez keymap, and modernized
* to take advantage of the quantum.h microcontroller agnostics gpio control
* abstractions and use the macros defined in config.h for the wiring as opposed
* to repeating that information all over the place.
*/
#include QMK_KEYBOARD_H
#include "i2c_master.h"
#include <print.h>
extern i2c_status_t mcp23017_status;
#define MCP23017_I2C_TIMEOUT 1000
#define I2C_WRITE 0x00
#define I2C_READ 0x01
// For a better understanding of the i2c protocol, this is a good read:
// https://www.robot-electronics.co.uk/i2c-tutorial
// I2C address:
// See the datasheet, section 3.3.1 on addressing I2C devices and figure 3-6 for an
// illustration
// http://ww1.microchip.com/downloads/en/devicedoc/20001952c.pdf
// All address pins of the mcp23017 are connected to the ground on the ferris
// | 0 | 1 | 0 | 0 | A2 | A1 | A0 |
// | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
#define I2C_ADDR 0b0100000
#define I2C_ADDR_WRITE ((I2C_ADDR << 1) | I2C_WRITE)
#define I2C_ADDR_READ ((I2C_ADDR << 1) | I2C_READ)
// Register addresses
// See https://github.com/adafruit/Adafruit-MCP23017-Arduino-Library/blob/master/Adafruit_MCP23017.h
#define IODIRA 0x00 // i/o direction register
#define IODIRB 0x01
#define GPPUA 0x0C // GPIO pull-up resistor register
#define GPPUB 0x0D
#define MCP23017_GPIOA 0x12 // general purpose i/o port register (write modifies OLAT)
#define MCP23017_GPIOB 0x13
#define OLATA 0x14 // output latch register
#define OLATB 0x15
bool i2c_initialized = 0;
i2c_status_t mcp23017_status = I2C_ADDR;
#define I2C2_SCL_BANK GPIOB
#define I2C2_SCL 10
#define I2C2_SDA_BANK GPIOB
#define I2C2_SDA 11
uint8_t init_mcp23017(void) {
print("init mcp23017\n");
mcp23017_status = I2C_ADDR;
// I2C subsystem
if (i2c_initialized == 0) {
i2c_init(); // on pins D(1,0)
i2c_initialized = true;
wait_ms(MCP23017_I2C_TIMEOUT);
}
// set pin direction
// - unused : input : 1
// - input : input : 1
// - driving : output : 0
// This means: we will read all the bits on GPIOA
// This means: we will write to the pins 0-4 on GPIOB (in select_rows)
uint8_t buf[] = {IODIRA, 0b11111111, 0b11110000};
print("before transmit\n");
mcp23017_status = i2c_transmit(I2C_ADDR_WRITE, buf, sizeof(buf), MCP23017_I2C_TIMEOUT);
uprintf("after transmit %i\n", mcp23017_status);
if (!mcp23017_status) {
// set pull-up
// - unused : on : 1
// - input : on : 1
// - driving : off : 0
// This means: we will read all the bits on GPIOA
// This means: we will write to the pins 0-4 on GPIOB (in select_rows)
uint8_t pullup_buf[] = {GPPUA, 0b11111111, 0b11110000};
mcp23017_status = i2c_transmit(I2C_ADDR_WRITE, pullup_buf, sizeof(pullup_buf), MCP23017_I2C_TIMEOUT);
uprintf("after transmit2 %i\n", mcp23017_status);
}
return mcp23017_status;
}
/* matrix state(1:on, 0:off) */
static matrix_row_t matrix[MATRIX_ROWS]; // debounced values
static matrix_row_t read_cols(uint8_t row);
static void unselect_row(uint8_t row);
static void unselect_rows(void);
static void unselect_cols(void);
static void select_row(uint8_t row);
static uint8_t mcp23017_reset_loop;
static void init_mcu_pins(void) {
unselect_rows();
unselect_cols();
}
void matrix_init_custom(void) {
debug_enable = true;
debug_matrix = true;
dprint("matrix_init_custom\n");
// initialize row and col
init_mcu_pins();
mcp23017_status = init_mcp23017();
// initialize matrix state: all keys off
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
matrix[i] = 0;
}
}
// Reads and stores a row, returning
// whether a change occurred.
static inline bool store_matrix_row(matrix_row_t current_matrix[], uint8_t index) {
matrix_row_t temp = read_cols(index);
if (current_matrix[index] != temp) {
current_matrix[index] = temp;
return true;
}
return false;
}
bool matrix_scan_custom(matrix_row_t current_matrix[]) {
if (mcp23017_status) { // if there was an error
if (++mcp23017_reset_loop == 0) {
// if (++mcp23017_reset_loop >= 1300) {
// since mcp23017_reset_loop is 8 bit - we'll try to reset once in 255 matrix scans
// this will be approx bit more frequent than once per second
print("trying to reset mcp23017\n");
mcp23017_status = init_mcp23017();
if (mcp23017_status) {
print("right side not responding\n");
} else {
print("right side attached\n");
}
}
}
bool changed = false;
for (uint8_t i = 0; i < MATRIX_ROWS_PER_SIDE; i++) {
// select rows from left and right hands
uint8_t left_index = i;
uint8_t right_index = i + MATRIX_ROWS_PER_SIDE;
changed |= store_matrix_row(current_matrix, left_index);
changed |= store_matrix_row(current_matrix, right_index);
unselect_rows();
}
return changed;
}
static matrix_row_t read_cols(uint8_t row) {
select_row(row);
if (row < MATRIX_ROWS_PER_SIDE) {
pin_t matrix_col_pins_mcu[MATRIX_COLS_PER_SIDE] = MATRIX_COL_PINS_MCU;
matrix_row_t current_row_value = 0;
matrix_io_delay();
// For each col...
for (uint8_t col_index = 0; col_index < MATRIX_COLS_PER_SIDE; col_index++) {
// Select the col pin to read (active low)
uint8_t pin_state = readPin(matrix_col_pins_mcu[col_index]);
// Populate the matrix row with the state of the col pin
current_row_value |= pin_state ? 0 : (MATRIX_ROW_SHIFTER << col_index);
}
unselect_row(row);
return current_row_value;
} else {
// we don't need a 30us delay anymore, because selecting a
// right-hand row requires more than 30us for i2c.
if (mcp23017_status) { // if there was an error
return 0;
} else {
uint8_t buf[] = {MCP23017_GPIOA};
mcp23017_status = i2c_transmit(I2C_ADDR_WRITE, buf, sizeof(buf), MCP23017_I2C_TIMEOUT);
// We read all the pins on GPIOA.
// The initial state was all ones and any depressed key at a given column for the currently selected row will have its bit flipped to zero.
// The return value is a row as represented in the generic matrix code were the rightmost bits represent the lower columns and zeroes represent non-depressed keys while ones represent depressed keys.
// Since the pins connected to eact columns are sequential, and counting from zero up (col 5 -> GPIOA0, col 6 -> GPIOA1 and so on), the only transformation needed is a bitwise not to swap all zeroes and ones.
uint8_t data[] = {0};
if (!mcp23017_status) {
mcp23017_status = i2c_receive(I2C_ADDR_READ, data, sizeof(data), MCP23017_I2C_TIMEOUT);
data[0] = ~(data[0]);
}
return data[0];
}
}
}
static void unselect_row(uint8_t row) {
pin_t matrix_row_pins_mcu[MATRIX_ROWS_PER_SIDE] = MATRIX_ROW_PINS_MCU;
setPinInputHigh(matrix_row_pins_mcu[row]);
}
static void unselect_rows(void) {
// no need to unselect on mcp23017, because the select step sets all
// the other row bits high, and it's not changing to a different
// direction
// unselect rows on microcontroller
pin_t matrix_row_pins_mcu[MATRIX_ROWS_PER_SIDE] = MATRIX_ROW_PINS_MCU;
for (int pin_index = 0; pin_index < MATRIX_ROWS_PER_SIDE; pin_index++) {
pin_t pin = matrix_row_pins_mcu[pin_index];
setPinInputHigh(pin);
}
}
static void unselect_cols(void) {
pin_t matrix_col_pins_mcu[MATRIX_COLS_PER_SIDE] = MATRIX_COL_PINS_MCU;
for (int pin_index = 0; pin_index < MATRIX_COLS_PER_SIDE; pin_index++) {
pin_t pin = matrix_col_pins_mcu[pin_index];
setPinInputHigh(pin);
}
}
static void select_row(uint8_t row) {
if (row < MATRIX_ROWS_PER_SIDE) {
// select on MCU
pin_t matrix_row_pins_mcu[MATRIX_ROWS_PER_SIDE] = MATRIX_ROW_PINS_MCU;
pin_t pin = matrix_row_pins_mcu[row];
setPinOutput(pin);
writePinLow(pin);
} else {
// select on mcp23017
if (mcp23017_status) { // if there was an error
// do nothing
} else {
// Select the desired row by writing a byte for the entire GPIOB bus where only the bit representing the row we want to select is a zero (write instruction) and every other bit is a one.
// Note that the row - MATRIX_ROWS_PER_SIDE reflects the fact that being on the right hand, the columns are numbered from MATRIX_ROWS_PER_SIDE to MATRIX_ROWS, but the pins we want to write to are indexed from zero up on the GPIOB bus.
uint8_t buf[] = {MCP23017_GPIOB, 0xFF & ~(1 << (row - MATRIX_ROWS_PER_SIDE))};
mcp23017_status = i2c_transmit(I2C_ADDR_WRITE, buf, sizeof(buf), I2C_TIMEOUT);
}
}
}

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/* Copyright 2020 QMK
*
* 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/>.
*/
/*
* This file was auto-generated by:
* `qmk chibios-confmigrate -i keyboards/ferris/0_2/mcuconf.h -r platforms/chibios/GENERIC_STM32_F072XB/configs/mcuconf.h`
*/
#pragma once
#include_next <mcuconf.h>
#undef STM32_I2C_USE_I2C2
#define STM32_I2C_USE_I2C2 TRUE
#undef STM32_I2C_USE_DMA
#define STM32_I2C_USE_DMA FALSE
#undef STM32_PWM_USE_TIM3
#define STM32_PWM_USE_TIM3 TRUE
#undef STM32_SPI_USE_SPI2
#define STM32_SPI_USE_SPI2 TRUE

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# Ferris 0.2
![Ferris 0.2 - bling, top view](https://i.imgur.com/LwKlmnzh.jpg)
![Ferris 0.2 - bling, bottom view](https://i.imgur.com/qGnYGVOh.jpg)
An stm32f072 based split 34 keys column staggered keyboard named and decorated after the rustlang mascott. All PCB files and some thoughts on the design are available on the [project's github page](https://github.com/pierrechevalier83/ferris)
* Keyboard Maintainer: [Pierre Chevalier](https://github.com/pierrechevalier83)
* Hardware Supported:
* Ferris 0.2: stm32f072 chip. Comes in 4 variants: bling, mini, high and compact
* Hardware Availability: Pierre Chevalier has been selling keyboard kits (see the #ferris channel in the 40% discord chat). Wider availability is on the horizon.
Make examples for this keyboard (after setting up your build environment):
make ferris/0_2:default
See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).

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# MCU name
MCU = STM32F072
# change yes to no to disable
#
BOOTMAGIC_ENABLE = lite # Virtual DIP switch configuration
MOUSEKEY_ENABLE = yes # Mouse keys
EXTRAKEY_ENABLE = yes # Audio control and System control
CONSOLE_ENABLE = no # Console for debug
COMMAND_ENABLE = no # Commands for debug and configuration
# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
SLEEP_LED_ENABLE = no # Breathing sleep LED during USB suspend
# if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
NKRO_ENABLE = no # USB Nkey Rollover
BACKLIGHT_ENABLE = no # Enable keyboard backlight functionality
RGBLIGHT_ENABLE = no # Enable keyboard RGB underglow
BLUETOOTH_ENABLE = no # Enable Bluetooth
AUDIO_ENABLE = no # Audio output
UNICODE_ENABLE = yes
CUSTOM_MATRIX = lite
NO_USB_STARTUP_CHECK = yes
LTO_ENABLE = no
SRC += matrix.c
QUANTUM_LIB_SRC += i2c_master.c

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/*
Copyright 2021 Pierre Chevalier <pierrechevalier83@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/>.
*/
#pragma once
#define DEBUG_MATRIX_SCAN_RATE

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#include QMK_KEYBOARD_H
void matrix_init_user(void) {
debug_enable=true;
debug_matrix=true;
//debug_keyboard=true;
//debug_mouse=true;
}
const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
[0] = LAYOUT(KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P, KC_A, KC_S, KC_D, KC_F, KC_G, KC_H, KC_J, KC_K, KC_L, KC_SCLN, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, KC_SLSH, KC_P0, DEBUG, KC_P2, KC_P3)
};

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# A test keymap for the Ferris keyboard
This keymap is not intended to be used to use the Ferris as a usable keyboard, but rather it is meant to be a very simple keymap used to test the hardware works properly. It can also be used to test firmware being written for new versions with a minimum amount of complexity coming from the keymap itself.
The keymap is composed of a single qwerty layer with a unique digit bound to each non-alpha key.

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CONSOLE_ENABLE = yes

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# Ferris
![Ferris, top view](https://imgur.com/V4QuaGs.jpg)
![Ferris, bottom view](https://i.imgur.com/7DJYME8.jpg)
![Ferris, familly pic](https://i.imgur.com/TCjkquRh.jpeg)
A split 34 keys column staggered keyboard named and decorated after the rustlang mascott. All PCB files and some thoughts on the design are available on the [project's github page](https://github.com/pierrechevalier83/ferris)
* Keyboard Maintainer: [Pierre Chevalier](https://github.com/pierrechevalier83)
* Hardware Supported:
* Ferris 0.1 (With atmega32u4 chip. Comes in 4 variants: base, low, high and compact)
* Ferris 0.2 (With stm32f072 chip. Comes in 4 variants: bling, mini, high and compact)
* Ferris sweep (With pro-micro. Comes in a couple of PCB edge cuts shapes, but with identical pinout)
* Hardware Availability: Pierre Chevalier has been selling keyboard kits (see the #ferris channel in the 40% discord chat). Wider availability is on the horizon.
Make examples for this keyboard (after setting up your build environment):
make ferris/0_1:default
make ferris/0_2:default
make ferris/sweep:default:avrdude-split-right
See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).

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# Ferris sweep
![Ferris sweep, top view](https://i.imgur.com/5qCZUv6h.jpg)
![Ferris sweep, bottom view](https://i.imgur.com/ZC47CJth.jpg)
A version of the Ferris keyboard that uses a daughterboard, designed by the fantastic @davidphilipbarr with some input from @pierrechevalier83 for the copper pad. All PCB files are available on the [project's github page](https://github.com/davidphilipbarr/Sweep)
* Keyboard Maintainer: [Pierre Chevalier](https://github.com/pierrechevalier83)
* Hardware Supported:
* Ferris sweep (With pro-micro. Comes in a couple of PCB edge cuts shapes, but with identical pinout)
* Hardware Availability: @iamnotyourbroom in the 40% discord chat server may have some spares for you.
Make examples for this keyboard (after setting up your build environment):
make ferris/sweep:default:avrdude-split-left
make ferris/sweep:default:avrdude-split-right
See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).