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| author | ConfuSomu | 2021-02-20 12:55:39 -0500 |
|---|---|---|
| committer | ConfuSomu | 2021-02-20 12:55:39 -0500 |
| commit | 8ad7e71440e603e94e972c099769ef2fc5e470e1 (patch) | |
| tree | 4042a8583cd881ae760f542394bb87d39b0e05dd /buttons.cpp | |
| parent | f2d591ce164086cdb0e57a49e867058e59457795 (diff) | |
| download | pico-watch-8ad7e71440e603e94e972c099769ef2fc5e470e1.tar pico-watch-8ad7e71440e603e94e972c099769ef2fc5e470e1.tar.gz pico-watch-8ad7e71440e603e94e972c099769ef2fc5e470e1.zip | |
Adopt C++
A large number of changes had to be made to use C++. "extern C" had to
be added for a few headers not adapted to C++. See
https://github.com/raspberrypi/pico-sdk/pull/106 for fix in affected
files. They will be removed when the pull request is merged in
pico-sdk's master branch.
Diffstat (limited to 'buttons.cpp')
| -rw-r--r-- | buttons.cpp | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/buttons.cpp b/buttons.cpp new file mode 100644 index 0000000..8ba7b81 --- /dev/null +++ b/buttons.cpp @@ -0,0 +1,55 @@ +#include <stdio.h> +#include "pico/stdlib.h" + +#include "buttons.hpp" +// From pico-watch.c: +extern int app_btnpressed(int app_id, uint gpio); +extern void app_switch(int old_appid, int new_appid); +extern int current_app; + +// Debounce control +// See https://www.raspberrypi.org/forums/viewtopic.php?f=145&t=301522#p1812063 +// time is currently shared between all buttons. +unsigned long button_time; +const int button_delayTime = 50; // 50ms worked fine for me .... change it to your needs/specs. + +//const uint BUTTON_PINS[] = {BUTTON_HOME, BUTTON_SELECT, BUTTON_MODE, BUTTON_UP, BUTTON_DOWN}; + +void gpio_interrupt_cb(uint gpio, uint32_t events) { + if ((to_ms_since_boot(get_absolute_time())-button_time)>button_delayTime) { + if (gpio == BUTTON_HOME && (current_app != 0)) // Home app + app_switch(current_app, 0); + else + app_btnpressed(current_app, gpio); + + button_time = to_ms_since_boot(get_absolute_time()); + } +} + +void init_buttons() { + gpio_init(BUTTON_HOME); + gpio_pull_up(BUTTON_HOME); + gpio_set_irq_enabled_with_callback(BUTTON_HOME, GPIO_IRQ_EDGE_FALL , true, &gpio_interrupt_cb); + gpio_init(BUTTON_SELECT); + gpio_pull_up(BUTTON_SELECT); + gpio_set_irq_enabled_with_callback(BUTTON_SELECT, GPIO_IRQ_EDGE_FALL , true, &gpio_interrupt_cb); + gpio_init(BUTTON_MODE); + gpio_pull_up(BUTTON_MODE); + gpio_set_irq_enabled_with_callback(BUTTON_MODE, GPIO_IRQ_EDGE_FALL , true, &gpio_interrupt_cb); + gpio_init(BUTTON_DOWN); + gpio_pull_up(BUTTON_DOWN); + gpio_set_irq_enabled_with_callback(BUTTON_DOWN, GPIO_IRQ_EDGE_FALL , true, &gpio_interrupt_cb); + gpio_init(BUTTON_UP); + gpio_pull_up(BUTTON_UP); + gpio_set_irq_enabled_with_callback(BUTTON_UP, GPIO_IRQ_EDGE_FALL , true, &gpio_interrupt_cb); + + /* For some reason for loop does not work… TODO + for (int i=0; i < NUMBER_OF_BUTTONS; i++) { + uint button = BUTTON_PINS[i]; + gpio_init(button); + gpio_pull_up(button); + gpio_set_irq_enabled_with_callback(button, GPIO_IRQ_EDGE_FALL , true, &gpio_interrupt_cb); + } + */ + button_time = to_ms_since_boot(get_absolute_time()); +} |