keychron_qmk_firmware/keyboards/ploopyco/trackball_nano/trackball_nano.c
Jeff Epler 9632360caa
Use a macro to compute the size of arrays at compile time (#18044)
* Add ARRAY_SIZE and CEILING utility macros

* Apply a coccinelle patch to use ARRAY_SIZE

* fix up some straggling items

* Fix 'make test:secure'

* Enhance ARRAY_SIZE macro to reject acting on pointers

The previous definition would not produce a diagnostic for
```
int *p;
size_t num_elem = ARRAY_SIZE(p)
```
but the new one will.

* explicitly get definition of ARRAY_SIZE

* Convert to ARRAY_SIZE when const is involved

The following spatch finds additional instances where the array is
const and the division is by the size of the type, not the size of
the first element:
```
@ rule5a using "empty.iso" @
type T;
const T[] E;
@@

- (sizeof(E)/sizeof(T))
+ ARRAY_SIZE(E)

@ rule6a using "empty.iso" @
type T;
const T[] E;
@@

- sizeof(E)/sizeof(T)
+ ARRAY_SIZE(E)
```

* New instances of ARRAY_SIZE added since initial spatch run

* Use `ARRAY_SIZE` in docs (found by grep)

* Manually use ARRAY_SIZE

hs_set is expected to be the same size as uint16_t, though it's made
of two 8-bit integers

* Just like char, sizeof(uint8_t) is guaranteed to be 1

This is at least true on any plausible system where qmk is actually used.

Per my understanding it's universally true, assuming that uint8_t exists:
https://stackoverflow.com/questions/48655310/can-i-assume-that-sizeofuint8-t-1

* Run qmk-format on core C files touched in this branch

Co-authored-by: Stefan Kerkmann <karlk90@pm.me>
2022-08-30 10:20:04 +02:00

116 lines
3.5 KiB
C

/* Copyright 2021 Colin Lam (Ploopy Corporation)
* Copyright 2020 Christopher Courtney, aka Drashna Jael're (@drashna) <drashna@live.com>
* Copyright 2019 Sunjun Kim
* Copyright 2019 Hiroyuki Okada
*
* 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 "trackball_nano.h"
#include "wait.h"
#ifndef OPT_DEBOUNCE
# define OPT_DEBOUNCE 5 // (ms) Time between scroll events
#endif
#ifndef SCROLL_BUTT_DEBOUNCE
# define SCROLL_BUTT_DEBOUNCE 100 // (ms) Time between scroll events
#endif
#ifndef OPT_THRES
# define OPT_THRES 150 // (0-1024) Threshold for actication
#endif
#ifndef OPT_SCALE
# define OPT_SCALE 1 // Multiplier for wheel
#endif
#ifndef PLOOPY_DPI_OPTIONS
# define PLOOPY_DPI_OPTIONS \
{ 375, 750, 1375 }
# ifndef PLOOPY_DPI_DEFAULT
# define PLOOPY_DPI_DEFAULT 2
# endif
#endif
#ifndef PLOOPY_DPI_DEFAULT
# define PLOOPY_DPI_DEFAULT 2
#endif
keyboard_config_t keyboard_config;
uint16_t dpi_array[] = PLOOPY_DPI_OPTIONS;
#define DPI_OPTION_SIZE ARRAY_SIZE(dpi_array)
void cycle_dpi(void) {
keyboard_config.dpi_config = (keyboard_config.dpi_config + 1) % DPI_OPTION_SIZE;
pointing_device_set_cpi(dpi_array[keyboard_config.dpi_config]);
#ifdef CONSOLE_ENABLE
uprintf("DPI is now %d\n", dpi_array[keyboard_config.dpi_config]);
#endif
}
// TODO: Implement libinput profiles
// https://wayland.freedesktop.org/libinput/doc/latest/pointer-acceleration.html
// Compile time accel selection
// Valid options are ACC_NONE, ACC_LINEAR, ACC_CUSTOM, ACC_QUADRATIC
// Trackball State
bool is_scroll_clicked = false;
bool BurstState = false; // init burst state for Trackball module
uint16_t MotionStart = 0; // Timer for accel, 0 is resting state
void pointing_device_init_kb(void) {
// set the DPI.
pointing_device_set_cpi(dpi_array[keyboard_config.dpi_config]);
}
// Hardware Setup
void keyboard_pre_init_kb(void) {
// debug_enable = true;
// debug_matrix = true;
// debug_mouse = true;
// debug_encoder = true;
/* Ground all output pins connected to ground. This provides additional
* pathways to ground. If you're messing with this, know this: driving ANY
* of these pins high will cause a short. On the MCU. Ka-blooey.
*/
#ifdef UNUSABLE_PINS
const pin_t unused_pins[] = UNUSABLE_PINS;
for (uint8_t i = 0; i < ARRAY_SIZE(unused_pins); i++) {
setPinOutput(unused_pins[i]);
writePinLow(unused_pins[i]);
}
#endif
keyboard_pre_init_user();
}
void eeconfig_init_kb(void) {
keyboard_config.dpi_config = PLOOPY_DPI_DEFAULT;
eeconfig_update_kb(keyboard_config.raw);
eeconfig_init_user();
}
void matrix_init_kb(void) {
// is safe to just read DPI setting since matrix init
// comes before pointing device init.
keyboard_config.raw = eeconfig_read_kb();
if (keyboard_config.dpi_config > DPI_OPTION_SIZE) {
eeconfig_init_kb();
}
matrix_init_user();
}