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158 changes: 158 additions & 0 deletions keyboards/cipulot/common/via_apc.c
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/* Copyright 2023 Cipulot
*
* 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 "ec_switch_matrix.h"
#include "action.h"
#include "via.h"

#ifdef VIA_ENABLE

void apc_init_thresholds(void);
void apc_set_threshold(bool is_for_actuation);

// Declaring an _apc_config_t struct that will store our data
typedef struct _apc_config_t {
uint16_t actuation_threshold;
uint16_t release_threshold;
} apc_config;

// Check if the size of the reserved persistent memory is the same as the size of struct apc_config
_Static_assert(sizeof(apc_config) == EECONFIG_USER_DATA_SIZE, "Mismatch in keyboard EECONFIG stored data");

// Declaring a new variable apc of type apc_config
apc_config apc;

// Declaring enums for VIA config menu
enum via_apc_enums {
// clang-format off
id_apc_actuation_threshold = 1,
id_apc_release_threshold = 2
// clang-format on
};

// Initializing persistent memory configuration: default values are declared and stored in PMEM
void eeconfig_init_user(void) {
// Default values
apc.actuation_threshold = DEFAULT_ACTUATION_LEVEL;
apc.release_threshold = DEFAULT_RELEASE_LEVEL;
// Write default value to EEPROM now
eeconfig_update_user_datablock(&apc);
}

// On Keyboard startup
void keyboard_post_init_user(void) {
// Read custom menu variables from memory
eeconfig_read_user_datablock(&apc);
apc_init_thresholds();
}

// Handle the data received by the keyboard from the VIA menus
void apc_config_set_value(uint8_t *data) {
// data = [ value_id, value_data ]
uint8_t *value_id = &(data[0]);
uint8_t *value_data = &(data[1]);

switch (*value_id) {
case id_apc_actuation_threshold: {
apc.actuation_threshold = value_data[1] | (value_data[0] << 8);
apc_set_threshold(true);
break;
}
case id_apc_release_threshold: {
apc.release_threshold = value_data[1] | (value_data[0] << 8);
apc_set_threshold(false);
break;
}
}
}

// Handle the data sent by the keyboard to the VIA menus
void apc_config_get_value(uint8_t *data) {
// data = [ value_id, value_data ]
uint8_t *value_id = &(data[0]);
uint8_t *value_data = &(data[1]);

switch (*value_id) {
case id_apc_actuation_threshold: {
value_data[0] = apc.actuation_threshold >> 8;
value_data[1] = apc.actuation_threshold & 0xFF;
break;
}
case id_apc_release_threshold: {
value_data[0] = apc.release_threshold >> 8;
value_data[1] = apc.release_threshold & 0xFF;
break;
}
}
}

// Save the data to persistent memory after changes are made
void apc_config_save(void) {
eeconfig_update_user_datablock(&apc);
}

void via_custom_value_command_kb(uint8_t *data, uint8_t length) {
// data = [ command_id, channel_id, value_id, value_data ]
uint8_t *command_id = &(data[0]);
uint8_t *channel_id = &(data[1]);
uint8_t *value_id_and_data = &(data[2]);

if (*channel_id == id_custom_channel) {
switch (*command_id) {
case id_custom_set_value: {
apc_config_set_value(value_id_and_data);
break;
}
case id_custom_get_value: {
apc_config_get_value(value_id_and_data);
break;
}
case id_custom_save: {
apc_config_save();
break;
}
default: {
// Unhandled message.
*command_id = id_unhandled;
break;
}
}
return;
}

*command_id = id_unhandled;
}

// Initialize the thresholds
void apc_init_thresholds(void) {
ecsm_config.ecsm_actuation_threshold = apc.actuation_threshold;
ecsm_config.ecsm_release_threshold = apc.release_threshold;

// Update the ecsm_config
ecsm_update(&ecsm_config);
}

// Set the thresholds
void apc_set_threshold(bool is_for_actuation) {
if (is_for_actuation) {
ecsm_config.ecsm_actuation_threshold = apc.actuation_threshold;

} else {
ecsm_config.ecsm_release_threshold = apc.release_threshold;
}
// Update the ecsm_config
ecsm_update(&ecsm_config);
}
#endif // VIA_ENABLE
45 changes: 45 additions & 0 deletions keyboards/cipulot/ec_theca/config.h
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/* Copyright 2023 Cipulot
*
* 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 MATRIX_ROWS 6
#define MATRIX_COLS 16

/* Custom matrix pins and port select array */
#define MATRIX_ROW_PINS \
{ B4, A14, B3, A15, B6, B5 }
#define MATRIX_COL_CHANNELS \
{ 3, 0, 1, 2, 6, 5, 7, 4 }
#define MUX_SEL_PINS \
{ B7, B8, B9 }

/* Hardware peripherals pins */
#define APLEX_EN_PIN_0 C13
#define APLEX_EN_PIN_1 C14
#define DISCHARGE_PIN B1
#define ANALOG_PORT A3

/* 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

#define DEFAULT_ACTUATION_LEVEL 550
#define DEFAULT_RELEASE_LEVEL 500

#define DISCHARGE_TIME 10
191 changes: 191 additions & 0 deletions keyboards/cipulot/ec_theca/ec_switch_matrix.c
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/* Copyright 2023 Cipulot
*
* 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 "ec_switch_matrix.h"
#include "analog.h"
#include "atomic_util.h"
#include "print.h"
#include "wait.h"

/* Pin and port array */
const uint32_t row_pins[] = MATRIX_ROW_PINS;
const uint8_t col_channels[] = MATRIX_COL_CHANNELS;
const uint32_t mux_sel_pins[] = MUX_SEL_PINS;

static ecsm_config_t config;
static uint16_t ecsm_sw_value[MATRIX_ROWS][MATRIX_COLS];

static adc_mux adcMux;

static inline void discharge_capacitor(void) {
writePinLow(DISCHARGE_PIN);
}
static inline void charge_capacitor(uint8_t row) {
writePinHigh(DISCHARGE_PIN);
writePinHigh(row_pins[row]);
}

static inline void init_mux_sel(void) {
for (int idx = 0; idx < 3; idx++) {
setPinOutput(mux_sel_pins[idx]);
}
}

static inline void select_mux(uint8_t col) {
uint8_t ch = col_channels[col];
writePin(mux_sel_pins[0], ch & 1);
writePin(mux_sel_pins[1], ch & 2);
writePin(mux_sel_pins[2], ch & 4);
}

static inline void init_row(void) {
for (int idx = 0; idx < MATRIX_ROWS; idx++) {
setPinOutput(row_pins[idx]);
writePinLow(row_pins[idx]);
}
}

static inline void clear_row(void) {
for (int idx = 0; idx < MATRIX_ROWS; idx++) {
setPinOutput(row_pins[idx]);
writePinLow(row_pins[idx]);
}
}

/* Initialize the peripherals pins */
int ecsm_init(ecsm_config_t const* const ecsm_config) {
// Initialize config
config = *ecsm_config;

palSetLineMode(ANALOG_PORT, PAL_MODE_INPUT_ANALOG);
adcMux = pinToMux(ANALOG_PORT);

// Dummy call to make sure that adcStart() has been called in the appropriate state
adc_read(adcMux);

// Initialize discharge pin as discharge mode
writePinLow(DISCHARGE_PIN);
setPinOutputOpenDrain(DISCHARGE_PIN);

// Initialize drive lines
init_row();

// Initialize multiplexer select pin
init_mux_sel();

// Enable AMUX
setPinOutput(APLEX_EN_PIN_0);
writePinLow(APLEX_EN_PIN_0);
setPinOutput(APLEX_EN_PIN_1);
writePinLow(APLEX_EN_PIN_1);

return 0;
}

int ecsm_update(ecsm_config_t const* const ecsm_config) {
// Save config
config = *ecsm_config;
return 0;
}

// Read the capacitive sensor value
uint16_t ecsm_readkey_raw(uint8_t channel, uint8_t row, uint8_t col) {
uint16_t sw_value = 0;

// Select the multiplexer
if (channel == 0) {
writePinHigh(APLEX_EN_PIN_0);
select_mux(col);
writePinLow(APLEX_EN_PIN_0);
} else {
writePinHigh(APLEX_EN_PIN_1);
select_mux(col);
writePinLow(APLEX_EN_PIN_1);
}

// Set strobe pins to low state
//writePinLow(row_pins[row]);
clear_row();
ATOMIC_BLOCK_FORCEON {
// Set the row pin to high state and have capacitor charge
charge_capacitor(row);
// Read the ADC value
sw_value = adc_read(adcMux);
}
// Discharge peak hold capacitor
discharge_capacitor();
// Waiting for the ghost capacitor to discharge fully
wait_us(DISCHARGE_TIME);

return sw_value;
}

// Update press/release state of key
bool ecsm_update_key(matrix_row_t* current_row, uint8_t row, uint8_t col, uint16_t sw_value) {
bool current_state = (*current_row >> col) & 1;

// Press to release
if (current_state && sw_value < config.ecsm_actuation_threshold) {
*current_row &= ~(1 << col);
return true;
}

// Release to press
if ((!current_state) && sw_value > config.ecsm_release_threshold) {
*current_row |= (1 << col);
return true;
}

return false;
}

// Scan key values and update matrix state
bool ecsm_matrix_scan(matrix_row_t current_matrix[]) {
bool updated = false;

// Disable AMUX of channel 1
writePinHigh(APLEX_EN_PIN_1);
for (int col = 0; col < sizeof(col_channels); col++) {
for (int row = 0; row < MATRIX_ROWS; row++) {
ecsm_sw_value[row][col] = ecsm_readkey_raw(0, row, col);
updated |= ecsm_update_key(&current_matrix[row], row, col, ecsm_sw_value[row][col]);
}
}

// Disable AMUX of channel 1
writePinHigh(APLEX_EN_PIN_0);
for (int col = 0; col < sizeof(col_channels); col++) {
for (int row = 0; row < MATRIX_ROWS; row++) {
ecsm_sw_value[row][col + 8] = ecsm_readkey_raw(1, row, col);
updated |= ecsm_update_key(&current_matrix[row], row, col + 8, ecsm_sw_value[row][col + 8]);
}
}
return updated;
}

// Debug print key values
void ecsm_print_matrix(void) {
for (int row = 0; row < MATRIX_ROWS; row++) {
for (int col = 0; col < MATRIX_COLS; col++) {
uprintf("%4d", ecsm_sw_value[row][col]);
if (col < (MATRIX_COLS - 1)) {
print(",");
}
}
print("\n");
}
print("\n");
}
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