293 lines
7.5 KiB
C
293 lines
7.5 KiB
C
/*
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MIT License
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Copyright (c) 2018, JacoBurge
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Adapted for QMK by Jack Humbert in 2018
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#include "matrix.h"
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#include "i2c_master.h"
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#include "print.h"
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#include <string.h>
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#define VIBRATE_LENGTH 50 //Defines number of interrupts motor will vibrate for, must be bigger than 8 for correct operation
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volatile uint8_t vibrate = 0; //Trigger vibration in interrupt
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static matrix_row_t matrix[MATRIX_ROWS];
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const uint8_t SENr[6] = {1, 2, 3, 5, 6, 7};//Maps capacitive pads to pins
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const uint8_t SENc[6] = {0, 4, 8, 9, 10, 11};
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volatile uint8_t LEDs[6][6] = {{0}};//Stores current LED values
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//Read data from the cap touch IC
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uint8_t readDataFromTS(uint8_t reg) {
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uint8_t rx[1] = { 0 };
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if (i2c_read_register(0x1C << 1, reg, rx, 1, 100) == 0) {
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return rx[0];
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}
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return 0;
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}
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//Write data to cap touch IC
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uint8_t writeDataToTS(uint8_t reg, uint8_t data) {
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uint8_t tx[2] = { reg, data };
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if (i2c_transmit(0x1C << 1, tx, 2, 100) == 0) {
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return 1;
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} else {
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return 0;
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}
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}
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uint8_t checkTSPres(void) {
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return (readDataFromTS(0x00) == 0x3E);
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}
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uint8_t capSetup(void) {
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uint8_t temp_return = checkTSPres();
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if (temp_return == 1) {
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// Perform measurements every 16ms
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writeDataToTS(0x08, 1);
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// Increase detection integrator value
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writeDataToTS(0x0B, 1);
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// Oversample to gain two bits for columns
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writeDataToTS(0x28, 0x42);
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writeDataToTS(0x29, 0x00);
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writeDataToTS(0x2A, 0x00);
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writeDataToTS(0x2B, 0x00);
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writeDataToTS(0x2C, 0x42);
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writeDataToTS(0x2D, 0x00);
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writeDataToTS(0x2E, 0x00);
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writeDataToTS(0x2F, 0x00);
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writeDataToTS(0x30, 0x42);
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writeDataToTS(0x31, 0x42);
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writeDataToTS(0x32, 0x42);
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writeDataToTS(0x33, 0x42);
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// Recalibration if touch detected for more than 8 seconds n*0.16s
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writeDataToTS(0x0C, 50);
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// Enable keys and set key groups
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writeDataToTS(0x1C, 0x00 | 0x04);
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writeDataToTS(0x1D, 0x00 | 0x08);
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writeDataToTS(0x1E, 0x00 | 0x08);
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writeDataToTS(0x1F, 0x00 | 0x08);
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writeDataToTS(0x20, 0x00 | 0x04);
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writeDataToTS(0x21, 0x00 | 0x08);
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writeDataToTS(0x22, 0x00 | 0x08);
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writeDataToTS(0x23, 0x00 | 0x08);
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writeDataToTS(0x24, 0x00 | 0x04);
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writeDataToTS(0x25, 0x00 | 0x04);
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writeDataToTS(0x26, 0x00 | 0x04);
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writeDataToTS(0x27, 0x00 | 0x04);
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}
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return temp_return;
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}
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__attribute__ ((weak))
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void matrix_init_user(void) {}
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__attribute__ ((weak))
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void matrix_scan_user(void) {}
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__attribute__ ((weak))
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void matrix_init_kb(void) {
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matrix_init_user();
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}
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__attribute__ ((weak))
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void matrix_scan_kb(void) {
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matrix_scan_user();
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}
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void matrix_init(void) {
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i2c_init();
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//Motor enable
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gpio_set_pin_output(E6);
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//Motor PWM
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gpio_set_pin_output(D7);
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//Power LED
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gpio_set_pin_output(B7);
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gpio_write_pin_high(B7);
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//LEDs Columns
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gpio_set_pin_output(F7);
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gpio_set_pin_output(F6);
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gpio_set_pin_output(F5);
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gpio_set_pin_output(F4);
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gpio_set_pin_output(F1);
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gpio_set_pin_output(F0);
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//LEDs Rows
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gpio_set_pin_output(D6);
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gpio_set_pin_output(B4);
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gpio_set_pin_output(B5);
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gpio_set_pin_output(B6);
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gpio_set_pin_output(C6);
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gpio_set_pin_output(C7);
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//Capacitive Interrupt
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gpio_set_pin_input(D2);
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capSetup();
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writeDataToTS(0x06, 0x12); //Calibrate capacitive touch IC
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memset(matrix, 0, MATRIX_ROWS * sizeof(matrix_row_t));
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matrix_init_kb();
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}
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uint16_t touchDetectionRoutine(void) {
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uint16_t data;
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uint8_t temp1, temp2;
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temp1 = readDataFromTS(0x04);
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temp2 = readDataFromTS(0x03);
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data = temp1;
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data = (data << 8) | temp2;
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return data;
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}
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//Process raw capacitive data, map pins to rows and columns
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void decodeArray(uint16_t dataIn, uint8_t *column, uint8_t *row) {
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uint8_t i1 = 20, i2 = 20;
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for (uint8_t i = 0; i < 12; i++) {
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if ((dataIn & 0b1) == 1) {
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if (i1 == 20) {
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i1 = i;
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} else if (i2 == 20) {
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i2 = i;
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}
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}
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dataIn = dataIn >> 1;
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}
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for (uint8_t j = 0; j < 6; j++) {
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if (SENr[j] == i1 || SENr[j] == i2) {
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*row = j;
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}
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if (SENc[j] == i1 || SENc[j] == i2) {
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*column = j;
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}
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}
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}
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void touchClearCurrentDetections(void) {
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readDataFromTS(0x05);
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readDataFromTS(0x02);
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readDataFromTS(0x03);
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readDataFromTS(0x04);
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}
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//Check interrupt pin
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uint8_t isTouchChangeDetected(void) {
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return !gpio_read_pin(D2);
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}
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uint8_t matrix_scan(void) {
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if (isTouchChangeDetected()) {
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uint16_t dataIn = touchDetectionRoutine();
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if ((dataIn & 0b111100010001) > 0 && (dataIn & 0b000011101110) > 0) {
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uint8_t column = 10, row = 10;
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decodeArray(dataIn, &column, &row);
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if (column != 10 && row != 10) {
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vibrate = VIBRATE_LENGTH; //Trigger vibration
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matrix[row] = _BV(column);
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} else {
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memset(matrix, 0, MATRIX_ROWS * sizeof(matrix_row_t));
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}
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} else {
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memset(matrix, 0, MATRIX_ROWS * sizeof(matrix_row_t));
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}
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touchClearCurrentDetections();
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}
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for (uint8_t c = 0; c < 6; c++) {
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for (uint8_t r = 0; r < 6; r++) {
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switch (r) {
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case 0: gpio_write_pin(D6, matrix_is_on(r, c)); break;
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case 1: gpio_write_pin(B4, matrix_is_on(r, c)); break;
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case 2: gpio_write_pin(B5, matrix_is_on(r, c)); break;
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case 3: gpio_write_pin(B6, matrix_is_on(r, c)); break;
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case 4: gpio_write_pin(C6, matrix_is_on(r, c)); break;
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case 5: gpio_write_pin(C7, matrix_is_on(r, c)); break;
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}
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switch (c) {
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case 0: gpio_write_pin(F5, !matrix_is_on(r, c)); break;
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case 1: gpio_write_pin(F4, !matrix_is_on(r, c)); break;
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case 2: gpio_write_pin(F1, !matrix_is_on(r, c)); break;
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case 3: gpio_write_pin(F0, !matrix_is_on(r, c)); break;
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case 4: gpio_write_pin(F6, !matrix_is_on(r, c)); break;
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case 5: gpio_write_pin(F7, !matrix_is_on(r, c)); break;
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}
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}
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}
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if (vibrate == VIBRATE_LENGTH) {
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gpio_write_pin_high(E6);
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gpio_write_pin_high(D7);
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vibrate--;
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} else if (vibrate > 0) {
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vibrate--;
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} else if (vibrate == 0) {
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gpio_write_pin_low(D7);
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gpio_write_pin_low(E6);
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}
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matrix_scan_kb();
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return 1;
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}
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bool matrix_is_on(uint8_t row, uint8_t col) {
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return (matrix[row] & (1<<col));
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}
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matrix_row_t matrix_get_row(uint8_t row) {
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return matrix[row];
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}
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void matrix_print(void) {
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xprintf("\nr/c 01234567\n");
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for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
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xprintf("%X0: ", row);
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matrix_row_t data = matrix_get_row(row);
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for (int col = 0; col < MATRIX_COLS; col++) {
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if (data & (1<<col))
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xprintf("1");
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else
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xprintf("0");
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}
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xprintf("\n");
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}
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}
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