Verified Commit 0473f463 authored by Rahix's avatar Rahix
Browse files

feat(epicardium): Add buttons module



Co-authored-by: fleur's avatarfleur <spacecarrot@fleurshax.net>
Signed-off-by: Rahix's avatarRahix <rahix@rahix.de>
parent 162fe8f8
......@@ -88,6 +88,8 @@ typedef _Bool bool;
#define API_LIGHT_SENSOR_RUN 0x80
#define API_LIGHT_SENSOR_GET 0x81
#define API_LIGHT_SENSOR_STOP 0x82
#define API_BUTTONS_READ 0x90
/* clang-format on */
typedef uint32_t api_int_id_t;
......@@ -274,6 +276,68 @@ API_ISR(EPIC_INT_UART_RX, epic_isr_uart_rx);
*/
API_ISR(EPIC_INT_CTRL_C, epic_isr_ctrl_c);
/**
* Buttons
* =======
*
*/
/** Button IDs */
enum epic_button {
/** ``1``, Bottom left button (bit 0). */
BUTTON_LEFT_BOTTOM = 1,
/** ``2``, Bottom right button (bit 1). */
BUTTON_RIGHT_BOTTOM = 2,
/** ``4``, Top right button (bit 2). */
BUTTON_RIGHT_TOP = 4,
/** ``8``, Top left (power) button (bit 3). */
BUTTON_LEFT_TOP = 8,
/** ``8``, Top left (power) button (bit 3). */
BUTTON_RESET = 8,
};
/**
* Read buttons.
*
* :c:func:`epic_buttons_read` will read all buttons specified in ``mask`` and
* return set bits for each button which was reported as pressed.
*
* .. note::
*
* The reset button cannot be unmapped from reset functionality. So, while
* you can read it, it cannot be used for app control.
*
* **Example**:
*
* .. code-block:: cpp
*
* #include "epicardium.h"
*
* uint8_t pressed = epic_buttons_read(BUTTON_LEFT_BOTTOM | BUTTON_RIGHT_BOTTOM);
*
* if (pressed & BUTTON_LEFT_BOTTOM) {
* // Bottom left button is pressed
* }
*
* if (pressed & BUTTON_RIGHT_BOTTOM) {
* // Bottom right button is pressed
* }
*
* :param uint8_t mask: Mask of buttons to read. The 4 LSBs correspond to the 4
* buttons:
*
* ===== ========= ============ ===========
* ``3`` ``2`` ``1`` ``0``
* ----- --------- ------------ -----------
* Reset Right Top Right Bottom Left Bottom
* ===== ========= ============ ===========
*
* Use the values defined in :c:type:`epic_button` for masking, as shown in
* the example above.
* :return: Returns nonzero value if unmasked buttons are pushed.
*/
API(API_BUTTONS_READ, uint8_t epic_buttons_read(uint8_t mask));
/**
* LEDs
* ====
......
#include "epicardium.h"
#include "portexpander.h"
#include "MAX77650-Arduino-Library.h"
#include <stdint.h>
static const uint8_t pin_mask[] = {
[BUTTON_LEFT_BOTTOM] = 1 << 5,
[BUTTON_RIGHT_BOTTOM] = 1 << 3,
[BUTTON_RIGHT_TOP] = 1 << 6,
};
uint8_t epic_buttons_read(uint8_t mask)
{
uint8_t ret = 0;
if (portexpander_detected() && (mask & 0x3)) {
uint8_t pin_status = ~portexpander_get();
for (uint8_t m = 1; m < 0x8; m <<= 1) {
if (mask & m && pin_status & pin_mask[m]) {
ret |= m;
}
}
}
if (mask & BUTTON_RESET && MAX77650_getDebounceStatusnEN0()) {
ret |= BUTTON_RESET;
}
return ret;
}
module_sources = files(
'buttons.c',
'dispatcher.c',
'display.c',
'fileops.c',
......
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