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-rw-r--r--quantum/joystick.c98
-rw-r--r--quantum/joystick.h28
-rw-r--r--quantum/process_keycode/process_joystick.c152
-rw-r--r--quantum/process_keycode/process_joystick.h21
4 files changed, 155 insertions, 144 deletions
diff --git a/quantum/joystick.c b/quantum/joystick.c
index 86b2c64036..d285dcdb5e 100644
--- a/quantum/joystick.c
+++ b/quantum/joystick.c
@@ -1,5 +1,24 @@
+/* Copyright 2022
+ *
+ * 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 "joystick.h"
+#include "analog.h"
+#include "wait.h"
+
// clang-format off
joystick_t joystick_status = {
.buttons = {0},
@@ -15,12 +34,13 @@ joystick_t joystick_status = {
// array defining the reading of analog values for each axis
__attribute__((weak)) joystick_config_t joystick_axes[JOYSTICK_AXES_COUNT] = {};
-// to be implemented in the hid protocol library
-void send_joystick_packet(joystick_t *joystick);
+__attribute__((weak)) void joystick_task(void) {
+ joystick_read_axes();
+}
void joystick_flush(void) {
if ((joystick_status.status & JS_UPDATED) > 0) {
- send_joystick_packet(&joystick_status);
+ host_joystick_send(&joystick_status);
joystick_status.status &= ~JS_UPDATED;
}
}
@@ -36,3 +56,75 @@ void unregister_joystick_button(uint8_t button) {
joystick_status.status |= JS_UPDATED;
joystick_flush();
}
+
+int16_t joystick_read_axis(uint8_t axis) {
+ // disable pull-up resistor
+ writePinLow(joystick_axes[axis].input_pin);
+
+ // if pin was a pull-up input, we need to uncharge it by turning it low
+ // before making it a low input
+ setPinOutput(joystick_axes[axis].input_pin);
+
+ wait_us(10);
+
+ if (joystick_axes[axis].output_pin != JS_VIRTUAL_AXIS) {
+ setPinOutput(joystick_axes[axis].output_pin);
+ writePinHigh(joystick_axes[axis].output_pin);
+ }
+
+ if (joystick_axes[axis].ground_pin != JS_VIRTUAL_AXIS) {
+ setPinOutput(joystick_axes[axis].ground_pin);
+ writePinLow(joystick_axes[axis].ground_pin);
+ }
+
+ wait_us(10);
+
+ setPinInput(joystick_axes[axis].input_pin);
+
+ wait_us(10);
+
+#if defined(ANALOG_JOYSTICK_ENABLE) && (defined(__AVR__) || defined(PROTOCOL_CHIBIOS))
+ int16_t axis_val = analogReadPin(joystick_axes[axis].input_pin);
+#else
+ // default to resting position
+ int16_t axis_val = joystick_axes[axis].mid_digit;
+#endif
+
+ // test the converted value against the lower range
+ int32_t ref = joystick_axes[axis].mid_digit;
+ int32_t range = joystick_axes[axis].min_digit;
+ int32_t ranged_val = ((axis_val - ref) * -JOYSTICK_RESOLUTION) / (range - ref);
+
+ if (ranged_val > 0) {
+ // the value is in the higher range
+ range = joystick_axes[axis].max_digit;
+ ranged_val = ((axis_val - ref) * JOYSTICK_RESOLUTION) / (range - ref);
+ }
+
+ // clamp the result in the valid range
+ ranged_val = ranged_val < -JOYSTICK_RESOLUTION ? -JOYSTICK_RESOLUTION : ranged_val;
+ ranged_val = ranged_val > JOYSTICK_RESOLUTION ? JOYSTICK_RESOLUTION : ranged_val;
+
+ return ranged_val;
+}
+
+void joystick_read_axes() {
+#if JOYSTICK_AXES_COUNT > 0
+ for (int i = 0; i < JOYSTICK_AXES_COUNT; ++i) {
+ if (joystick_axes[i].input_pin == JS_VIRTUAL_AXIS) {
+ continue;
+ }
+
+ joystick_set_axis(i, joystick_read_axis(i));
+ }
+
+ joystick_flush();
+#endif
+}
+
+void joystick_set_axis(uint8_t axis, int16_t value) {
+ if (value != joystick_status.axes[axis]) {
+ joystick_status.axes[axis] = value;
+ joystick_status.status |= JS_UPDATED;
+ }
+}
diff --git a/quantum/joystick.h b/quantum/joystick.h
index 5d81b14ef2..ee966fdb1a 100644
--- a/quantum/joystick.h
+++ b/quantum/joystick.h
@@ -1,3 +1,19 @@
+/* Copyright 2022
+ *
+ * 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 <stdint.h>
@@ -54,7 +70,10 @@ typedef struct {
extern joystick_config_t joystick_axes[JOYSTICK_AXES_COUNT];
-enum joystick_status { JS_INITIALIZED = 1, JS_UPDATED = 2 };
+enum joystick_status {
+ JS_INITIALIZED = 1,
+ JS_UPDATED,
+};
typedef struct {
uint8_t buttons[(JOYSTICK_BUTTON_COUNT - 1) / 8 + 1];
@@ -65,7 +84,14 @@ typedef struct {
extern joystick_t joystick_status;
+void joystick_task(void);
void joystick_flush(void);
void register_joystick_button(uint8_t button);
void unregister_joystick_button(uint8_t button);
+
+int16_t joystick_read_axis(uint8_t axis);
+void joystick_read_axes(void);
+void joystick_set_axis(uint8_t axis, int16_t value);
+
+void host_joystick_send(joystick_t *joystick);
diff --git a/quantum/process_keycode/process_joystick.c b/quantum/process_keycode/process_joystick.c
index e867606074..af69d3aa05 100644
--- a/quantum/process_keycode/process_joystick.c
+++ b/quantum/process_keycode/process_joystick.c
@@ -1,10 +1,21 @@
-#include "joystick.h"
-#include "process_joystick.h"
-
-#include "analog.h"
+/* Copyright 2022
+ *
+ * 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 <string.h>
-#include <math.h>
+#include "process_joystick.h"
+#include "joystick.h"
bool process_joystick(uint16_t keycode, keyrecord_t *record) {
switch (keycode) {
@@ -18,132 +29,3 @@ bool process_joystick(uint16_t keycode, keyrecord_t *record) {
}
return true;
}
-
-__attribute__((weak)) void joystick_task(void) {
- if (process_joystick_analogread()) {
- joystick_flush();
- }
-}
-
-uint16_t savePinState(pin_t pin) {
-#ifdef __AVR__
- uint8_t pinNumber = pin & 0xF;
- return ((PORTx_ADDRESS(pin) >> pinNumber) & 0x1) << 1 | ((DDRx_ADDRESS(pin) >> pinNumber) & 0x1);
-#elif defined(PROTOCOL_CHIBIOS)
- /*
- The pin configuration is backed up in the following format :
- bit 15 9 8 7 6 5 4 3 2 1 0
- |unused|ODR|IDR|PUPDR|OSPEEDR|OTYPER|MODER|
- */
- return ((PAL_PORT(pin)->MODER >> (2 * PAL_PAD(pin))) & 0x3) | (((PAL_PORT(pin)->OTYPER >> (1 * PAL_PAD(pin))) & 0x1) << 2) | (((PAL_PORT(pin)->OSPEEDR >> (2 * PAL_PAD(pin))) & 0x3) << 3) | (((PAL_PORT(pin)->PUPDR >> (2 * PAL_PAD(pin))) & 0x3) << 5) | (((PAL_PORT(pin)->IDR >> (1 * PAL_PAD(pin))) & 0x1) << 7) | (((PAL_PORT(pin)->ODR >> (1 * PAL_PAD(pin))) & 0x1) << 8);
-#else
- return 0;
-#endif
-}
-
-void restorePinState(pin_t pin, uint16_t restoreState) {
-#if defined(PROTOCOL_LUFA)
- uint8_t pinNumber = pin & 0xF;
- PORTx_ADDRESS(pin) = (PORTx_ADDRESS(pin) & ~_BV(pinNumber)) | (((restoreState >> 1) & 0x1) << pinNumber);
- DDRx_ADDRESS(pin) = (DDRx_ADDRESS(pin) & ~_BV(pinNumber)) | ((restoreState & 0x1) << pinNumber);
-#elif defined(PROTOCOL_CHIBIOS)
- PAL_PORT(pin)->MODER = (PAL_PORT(pin)->MODER & ~(0x3 << (2 * PAL_PAD(pin)))) | (restoreState & 0x3) << (2 * PAL_PAD(pin));
- PAL_PORT(pin)->OTYPER = (PAL_PORT(pin)->OTYPER & ~(0x1 << (1 * PAL_PAD(pin)))) | ((restoreState >> 2) & 0x1) << (1 * PAL_PAD(pin));
- PAL_PORT(pin)->OSPEEDR = (PAL_PORT(pin)->OSPEEDR & ~(0x3 << (2 * PAL_PAD(pin)))) | ((restoreState >> 3) & 0x3) << (2 * PAL_PAD(pin));
- PAL_PORT(pin)->PUPDR = (PAL_PORT(pin)->PUPDR & ~(0x3 << (2 * PAL_PAD(pin)))) | ((restoreState >> 5) & 0x3) << (2 * PAL_PAD(pin));
- PAL_PORT(pin)->IDR = (PAL_PORT(pin)->IDR & ~(0x1 << (1 * PAL_PAD(pin)))) | ((restoreState >> 7) & 0x1) << (1 * PAL_PAD(pin));
- PAL_PORT(pin)->ODR = (PAL_PORT(pin)->ODR & ~(0x1 << (1 * PAL_PAD(pin)))) | ((restoreState >> 8) & 0x1) << (1 * PAL_PAD(pin));
-#else
- return;
-#endif
-}
-
-__attribute__((weak)) bool process_joystick_analogread() {
- return process_joystick_analogread_quantum();
-}
-
-bool process_joystick_analogread_quantum() {
-#if JOYSTICK_AXES_COUNT > 0
- for (int axis_index = 0; axis_index < JOYSTICK_AXES_COUNT; ++axis_index) {
- if (joystick_axes[axis_index].input_pin == JS_VIRTUAL_AXIS) {
- continue;
- }
-
- // save previous input pin status as well
- uint16_t inputSavedState = savePinState(joystick_axes[axis_index].input_pin);
-
- // disable pull-up resistor
- writePinLow(joystick_axes[axis_index].input_pin);
-
- // if pin was a pull-up input, we need to uncharge it by turning it low
- // before making it a low input
- setPinOutput(joystick_axes[axis_index].input_pin);
-
- wait_us(10);
-
- // save and apply output pin status
- uint16_t outputSavedState = 0;
- if (joystick_axes[axis_index].output_pin != JS_VIRTUAL_AXIS) {
- // save previous output pin status
- outputSavedState = savePinState(joystick_axes[axis_index].output_pin);
-
- setPinOutput(joystick_axes[axis_index].output_pin);
- writePinHigh(joystick_axes[axis_index].output_pin);
- }
-
- uint16_t groundSavedState = 0;
- if (joystick_axes[axis_index].ground_pin != JS_VIRTUAL_AXIS) {
- // save previous output pin status
- groundSavedState = savePinState(joystick_axes[axis_index].ground_pin);
-
- setPinOutput(joystick_axes[axis_index].ground_pin);
- writePinLow(joystick_axes[axis_index].ground_pin);
- }
-
- wait_us(10);
-
- setPinInput(joystick_axes[axis_index].input_pin);
-
- wait_us(10);
-
-# if defined(ANALOG_JOYSTICK_ENABLE) && (defined(__AVR__) || defined(PROTOCOL_CHIBIOS))
- int16_t axis_val = analogReadPin(joystick_axes[axis_index].input_pin);
-# else
- // default to resting position
- int16_t axis_val = joystick_axes[axis_index].mid_digit;
-# endif
-
- // test the converted value against the lower range
- int32_t ref = joystick_axes[axis_index].mid_digit;
- int32_t range = joystick_axes[axis_index].min_digit;
- int32_t ranged_val = ((axis_val - ref) * -JOYSTICK_RESOLUTION) / (range - ref);
-
- if (ranged_val > 0) {
- // the value is in the higher range
- range = joystick_axes[axis_index].max_digit;
- ranged_val = ((axis_val - ref) * JOYSTICK_RESOLUTION) / (range - ref);
- }
-
- // clamp the result in the valid range
- ranged_val = ranged_val < -JOYSTICK_RESOLUTION ? -JOYSTICK_RESOLUTION : ranged_val;
- ranged_val = ranged_val > JOYSTICK_RESOLUTION ? JOYSTICK_RESOLUTION : ranged_val;
-
- if (ranged_val != joystick_status.axes[axis_index]) {
- joystick_status.axes[axis_index] = ranged_val;
- joystick_status.status |= JS_UPDATED;
- }
-
- // restore output, ground and input status
- if (joystick_axes[axis_index].output_pin != JS_VIRTUAL_AXIS) {
- restorePinState(joystick_axes[axis_index].output_pin, outputSavedState);
- }
- if (joystick_axes[axis_index].ground_pin != JS_VIRTUAL_AXIS) {
- restorePinState(joystick_axes[axis_index].ground_pin, groundSavedState);
- }
-
- restorePinState(joystick_axes[axis_index].input_pin, inputSavedState);
- }
-
-#endif
- return true;
-}
diff --git a/quantum/process_keycode/process_joystick.h b/quantum/process_keycode/process_joystick.h
index 7a8b82913a..1fb8757708 100644
--- a/quantum/process_keycode/process_joystick.h
+++ b/quantum/process_keycode/process_joystick.h
@@ -1,11 +1,22 @@
+/* Copyright 2022
+ *
+ * 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 <stdint.h>
#include "quantum.h"
bool process_joystick(uint16_t keycode, keyrecord_t *record);
-
-void joystick_task(void);
-
-bool process_joystick_analogread(void);
-bool process_joystick_analogread_quantum(void);
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