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-rw-r--r--keyboards/ferris/0_1/0_1.c17
-rw-r--r--keyboards/ferris/0_1/0_1.h43
-rw-r--r--keyboards/ferris/0_1/config.h60
-rw-r--r--keyboards/ferris/0_1/matrix.c282
-rw-r--r--keyboards/ferris/0_1/rules.mk28
5 files changed, 430 insertions, 0 deletions
diff --git a/keyboards/ferris/0_1/0_1.c b/keyboards/ferris/0_1/0_1.c
new file mode 100644
index 0000000000..dbdb0b4bdc
--- /dev/null
+++ b/keyboards/ferris/0_1/0_1.c
@@ -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_1.h"
diff --git a/keyboards/ferris/0_1/0_1.h b/keyboards/ferris/0_1/0_1.h
new file mode 100644
index 0000000000..4602637ca6
--- /dev/null
+++ b/keyboards/ferris/0_1/0_1.h
@@ -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
diff --git a/keyboards/ferris/0_1/config.h b/keyboards/ferris/0_1/config.h
new file mode 100644
index 0000000000..33494d9273
--- /dev/null
+++ b/keyboards/ferris/0_1/config.h
@@ -0,0 +1,60 @@
+/*
+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 0x0000
+#define DEVICE_VER 0x0001
+#define MANUFACTURER Pierre
+#define PRODUCT Ferris the keeb
+#define DESCRIPTION A minimalistic 34 - keys split keyboard
+
+/* 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 14
+#define UNUSED_MCP 7
+
+// wiring
+#define MATRIX_ROW_PINS_MCU \
+ { B3, B2, B1, F0 }
+#define MATRIX_COL_PINS_MCU \
+ { D6, D7, B4, B5, B6 }
+#define UNUSED_PINS_MCU \
+ { B0, B7, C6, C7, D2, D3, D4, D5, E6, F1, F4, F5, F6, F7 }
+#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 }
+
+/* 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
+
diff --git a/keyboards/ferris/0_1/matrix.c b/keyboards/ferris/0_1/matrix.c
new file mode 100644
index 0000000000..e13c35d358
--- /dev/null
+++ b/keyboards/ferris/0_1/matrix.c
@@ -0,0 +1,282 @@
+/*
+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"
+
+extern i2c_status_t mcp23017_status;
+#define I2C_TIMEOUT 1000
+
+// 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 GPIOA 0x12 // general purpose i/o port register (write modifies OLAT)
+#define GPIOB 0x13
+#define OLATA 0x14 // output latch register
+#define OLATB 0x15
+
+bool i2c_initialized = 0;
+i2c_status_t mcp23017_status = I2C_ADDR;
+
+uint8_t init_mcp23017(void) {
+ print("starting init");
+ mcp23017_status = I2C_ADDR;
+
+ // I2C subsystem
+ if (i2c_initialized == 0) {
+ i2c_init(); // on pins D(1,0)
+ i2c_initialized = true;
+ wait_ms(I2C_TIMEOUT);
+ }
+
+ // set pin direction
+ // - 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();
+ 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 init_cols(void);
+static void unselect_rows(void);
+static void select_row(uint8_t row);
+
+static uint8_t mcp23017_reset_loop;
+
+void matrix_init_custom(void) {
+ // initialize row and col
+
+ mcp23017_status = init_mcp23017();
+
+ unselect_rows();
+ init_cols();
+
+ // initialize matrix state: all keys off
+ for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+ matrix[i] = 0;
+ }
+}
+
+void matrix_power_up(void) {
+ mcp23017_status = init_mcp23017();
+
+ unselect_rows();
+ init_cols();
+
+ // 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
+ dprint("trying to reset mcp23017\n");
+ mcp23017_status = init_mcp23017();
+ if (mcp23017_status) {
+ dprint("right side not responding\n");
+ } else {
+ dprint("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;
+ select_row(left_index);
+ select_row(right_index);
+
+ // we don't need a 30us delay anymore, because selecting a
+ // left-hand row requires more than 30us for i2c.
+
+ changed |= store_matrix_row(current_matrix, left_index);
+ changed |= store_matrix_row(current_matrix, right_index);
+
+ unselect_rows();
+ }
+
+ return changed;
+}
+
+static void init_cols(void) {
+ // init on mcp23017
+ // not needed, already done as part of init_mcp23017()
+
+ // init on mcu
+ 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];
+ setPinInput(pin);
+ writePinHigh(pin);
+ }
+}
+
+static matrix_row_t read_cols(uint8_t 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;
+ // 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);
+ }
+ return current_row_value;
+ } else {
+ 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;
+ // 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;
+ }
+ }
+}
+
+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];
+ setPinInput(pin);
+ writePinLow(pin);
+ }
+}
+
+static void select_row(uint8_t row) {
+ if (row < MATRIX_ROWS_PER_SIDE) {
+ // select on atmega32u4
+ 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 {
+ 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();
+ }
+ }
+}
diff --git a/keyboards/ferris/0_1/rules.mk b/keyboards/ferris/0_1/rules.mk
new file mode 100644
index 0000000000..8645dbba0d
--- /dev/null
+++ b/keyboards/ferris/0_1/rules.mk
@@ -0,0 +1,28 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+BOOTLOADER = atmel-dfu
+
+# change yes to no to disable
+#
+BOOTMAGIC_ENABLE = no # 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 = yes
+
+SRC += matrix.c
+QUANTUM_LIB_SRC += i2c_master.c