EC Pro 2 PCB

keyboards/cipulot/ec_pro2/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
+
+/* Custom matrix pins and port select array */
+#define MATRIX_ROW_PINS \
+    { B15, A8, B0, A7, B1 }
+#define MATRIX_COL_CHANNELS \
+    { 0, 3, 1, 2, 5, 7, 6, 4 }
+#define MUX_SEL_PINS \
+    { B6, B5, B4 }
+
+/* Hardware peripherals pins */
+#define APLEX_EN_PIN_0 B7
+#define APLEX_EN_PIN_1 B3
+#define DISCHARGE_PIN A6
+#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
+
+// This is the size of the EEPROM for the custom VIA-specific data
+#define EECONFIG_KB_DATA_SIZE 4
+
+#define DEFAULT_ACTUATION_LEVEL 550
+#define DEFAULT_RELEASE_LEVEL 500

keyboards/cipulot/ec_pro2/ec_pro2.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/>.
+ */
+
+#ifdef VIA_ENABLE
+#    include "ec_switch_matrix.h"
+#    include "print.h"
+#    include "eeconfig.h"
+#    include "quantum.h"
+
+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_KB_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_kb(void) {
+    // Default values
+    apc.actuation_threshold = DEFAULT_ACTUATION_LEVEL;
+    apc.release_threshold   = DEFAULT_RELEASE_LEVEL;
+    // Write default value to EEPROM now
+    eeconfig_update_kb_datablock(&apc);
+}
+
+// On Keyboard startup
+void keyboard_post_init_kb(void) {
+    // Read custom menu variables from memory
+    eeconfig_read_kb_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_kb_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

keyboards/cipulot/ec_pro2/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"
+
+/* 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) {
+    ATOMIC_BLOCK_FORCEON {
+        writePinLow(DISCHARGE_PIN);
+    }
+}
+static inline void charge_capacitor(uint8_t row) {
+    ATOMIC_BLOCK_FORCEON {
+        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]);
+    }
+}
+
+/* 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);
+
+    // 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]);
+
+    // Set the row pin to high state and have capacitor charge
+    charge_capacitor(row);
+
+    ATOMIC_BLOCK_FORCEON {
+        sw_value = adc_read(adcMux);
+    }
+    // Discharge peak hold capacitor
+    discharge_capacitor();
+
+    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) - 1); 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");
+}