102 lines
2.1 KiB
C
102 lines
2.1 KiB
C
/*
|
|
* btn.c: handler for user interface with real or capacitive buttons
|
|
*/
|
|
|
|
#include "ch32x035_conf.h"
|
|
#include "btn.h"
|
|
|
|
#include "driver/adc.h"
|
|
|
|
|
|
|
|
BtnSub btn[BTN_COUNT];
|
|
|
|
uint16_t btn_pushed;
|
|
uint16_t btn_held;
|
|
|
|
|
|
|
|
void btn_push_cb(uint8_t idx)
|
|
{
|
|
if (!(btn_pushed & (1 << idx))) {
|
|
btn_pushed |= (1 << idx);
|
|
if (btn[idx].cb_push) btn[idx].cb_push(idx);
|
|
}
|
|
}
|
|
|
|
void btn_hold_cb(uint8_t idx)
|
|
{
|
|
btn_held |= (1 << idx);
|
|
if (btn[idx].cb_hold) btn[idx].cb_hold(idx);
|
|
}
|
|
|
|
void btn_release_cb(uint8_t idx)
|
|
{
|
|
btn_pushed &= ~(1 << idx);
|
|
btn_held &= ~(1 << idx);
|
|
if (btn[idx].cb_release) btn[idx].cb_release(idx);
|
|
}
|
|
|
|
void btn_process()
|
|
{
|
|
uint16_t i;
|
|
uint32_t x;
|
|
uint16_t btn_state[4] = {0};
|
|
|
|
// fill button bitfield
|
|
for (i = 0; i < BTN_COUNT; i++) {
|
|
if (i == 0) {
|
|
// GPIOC pulldown button
|
|
x = GPIOC->INDR & (1 << 10); // PC10 (or PC17)
|
|
} else if (i < 3) {
|
|
// GPIOB pullup buttons
|
|
x = !(GPIOB->INDR & (1 << (i + 10))); // PB11, PB12
|
|
} else {
|
|
// touch sensors
|
|
x = adc_get_tkey(i - 3);
|
|
}
|
|
|
|
// is pushed?
|
|
if (x) {
|
|
if (btn[i].hold != 0xffff)
|
|
btn[i].hold++;
|
|
|
|
if (btn[i].hold == DEBOUNCE) {
|
|
btn_state[1] |= (1 << (i + 3));
|
|
}
|
|
}
|
|
|
|
// is held?
|
|
if (btn[i].hold == HOLD_COUNTS) {
|
|
btn_state[2] |= (1 << (i + 3));
|
|
}
|
|
|
|
// is repeated?
|
|
if (btn[i].repeat && (btn[i].hold == (HOLD_COUNTS + btn[i].repeat))) {
|
|
btn_state[2] |= (1 << (i + 3));
|
|
btn[i].hold = HOLD_COUNTS;
|
|
}
|
|
|
|
// is released?
|
|
if (!x) {
|
|
if (btn[i].hold) {
|
|
btn[i].hold = 0;
|
|
btn_state[3] |= (1 << (i + 3));
|
|
}
|
|
}
|
|
}
|
|
|
|
// process callbacks for new events
|
|
for (i = 0; i < BTN_COUNT; i++) {
|
|
if (btn_state[1] & (1 << i)) {
|
|
btn_push_cb(i);
|
|
}
|
|
if (btn_state[2] & (1 << i)) {
|
|
btn_hold_cb(i);
|
|
}
|
|
if (btn_state[3] & (1 << i)) {
|
|
btn_release_cb(i);
|
|
}
|
|
}
|
|
}
|