125 lines
3.8 KiB
C
125 lines
3.8 KiB
C
/* Copyright 2018 Jack Humbert <jack.humb@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "joystiic.h"
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#include "print.h"
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#include "action.h"
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#define JOYSTIIC_DEFAULT_ADDR 0x20
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#define JOYSTIIC_COMMAND_HORIZONTAL 0x00
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#define JOYSTIIC_COMMAND_VERTICAL 0x02
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#define JOYSTIIC_COMMAND_BUTTON 0x04
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#define JOYSTIIC_CENTER 512
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#define JOYSTIIC_DEADZONE 200
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uint16_t joystiic_horizontal;
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uint16_t joystiic_vertical;
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bool joystiic_button;
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uint8_t joystiic_tx[1];
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uint8_t joystiic_rx_horizontal[2];
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uint8_t joystiic_rx_vertical[2];
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uint8_t joystiic_rx_button[1];
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bool joystiic_triggered[5] = {0};
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void joystiic_init(void) {
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i2c_init();
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i2c_start(JOYSTIIC_DEFAULT_ADDR);
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}
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void joystiic_update(uint16_t horizontal, uint16_t vertical, bool button) {
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joystiic_update_kb(horizontal, vertical, button);
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joystiic_update_user(horizontal, vertical, button);
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}
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__attribute__ ((weak))
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void joystiic_update_kb(uint16_t horizontal, uint16_t vertical, bool button) { }
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__attribute__ ((weak))
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void joystiic_update_user(uint16_t horizontal, uint16_t vertical, bool button) { }
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void joystiic_trigger(uint8_t trigger, bool active) {
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joystiic_trigger_kb(trigger, active);
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joystiic_trigger_user(trigger, active);
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}
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__attribute__ ((weak))
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void joystiic_trigger_kb(uint8_t trigger, bool active) { }
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__attribute__ ((weak))
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void joystiic_trigger_user(uint8_t trigger, bool active) { }
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void joystiic_trigger_if_not(uint8_t trigger, bool active) {
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if (joystiic_triggered[trigger] != active) {
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joystiic_triggered[trigger] = active;
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joystiic_trigger(trigger, active);
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}
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}
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void joystiic_task(void) {
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// get horizontal axis
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joystiic_tx[0] = JOYSTIIC_COMMAND_HORIZONTAL;
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if (MSG_OK != i2c_transmit_receive(JOYSTIIC_DEFAULT_ADDR << 1,
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joystiic_tx, 1,
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joystiic_rx_horizontal, 2
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)) {
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printf("error hori\n");
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}
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joystiic_horizontal = ((uint16_t)joystiic_rx_horizontal[0] << 8) | joystiic_rx_horizontal[1];
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joystiic_trigger_if_not(JOYSTIIC_LEFT, joystiic_horizontal > (JOYSTIIC_CENTER + JOYSTIIC_DEADZONE));
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joystiic_trigger_if_not(JOYSTIIC_RIGHT, joystiic_horizontal < (JOYSTIIC_CENTER - JOYSTIIC_DEADZONE));
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// get vertical axis
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joystiic_tx[0] = JOYSTIIC_COMMAND_VERTICAL;
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if (MSG_OK != i2c_transmit_receive(JOYSTIIC_DEFAULT_ADDR << 1,
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joystiic_tx, 1,
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joystiic_rx_vertical, 2
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)) {
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printf("error vert\n");
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}
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joystiic_vertical = ((uint16_t)joystiic_rx_vertical[0] << 8) | joystiic_rx_vertical[1];
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joystiic_trigger_if_not(JOYSTIIC_UP, joystiic_vertical > (JOYSTIIC_CENTER + JOYSTIIC_DEADZONE));
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joystiic_trigger_if_not(JOYSTIIC_DOWN, joystiic_vertical < (JOYSTIIC_CENTER - JOYSTIIC_DEADZONE));
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// get button press
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joystiic_tx[0] = JOYSTIIC_COMMAND_BUTTON;
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if (MSG_OK != i2c_transmit_receive(JOYSTIIC_DEFAULT_ADDR << 1,
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joystiic_tx, 1,
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joystiic_rx_button, 1
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)) {
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printf("error vert\n");
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}
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joystiic_button = !joystiic_rx_button[0];
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joystiic_trigger_if_not(JOYSTIIC_PRESS, joystiic_button);
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joystiic_update(joystiic_horizontal, joystiic_vertical, joystiic_button);
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//printf("%d\n", joystiic[0]);
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// SEND_STRING("H: ");
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// send_word(joystiic_rx_horizontal[0]);
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// tap_code(KC_SPACE);
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// send_word(joystiic_rx_horizontal[1]);
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// tap_code(KC_SPACE);
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}
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