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Viewing changes to ToyKeeper/spaghetti-monster/fsm-pcint.c

  • Committer: Selene Scriven
  • Date: 2020-07-06 20:24:28 UTC
  • mfrom: (188.1.294 fsm)
  • Revision ID: bzr@toykeeper.net-20200706202428-7pyen2ow9q2rtd9p
merged nearly a year of updates from the fsm branch, including the new product map

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ToyKeeper/spaghetti-monster/fsm-pcint.c
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#include <util/delay_basic.h>
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uint8_t button_is_pressed() {
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    // remember the past 32 measurements
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    static uint32_t readings = 0;
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    // take at least one new measurement,
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    // and wait for measurements to settle to all zeroes or all ones
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    do {
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        // shift past readings and add current value
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        readings = (readings << 1) | ((SWITCH_PORT & (1<<SWITCH_PIN)) == 0);
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        // wait a moment
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        _delay_loop_2(BOGOMIPS/16);  // up to 2ms to stabilize
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    }
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    while ((readings != 0) && (readings != 0xFFFFFFFF));
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    button_last_state = readings;
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    return readings;
 
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    uint8_t value = ((SWITCH_PORT & (1<<SWITCH_PIN)) == 0);
 
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    button_last_state = value;
 
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    return value;
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}
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inline void PCINT_on() {
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//void button_change_interrupt() {
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#if (ATTINY == 25) || (ATTINY == 45) || (ATTINY == 85) || (ATTINY == 1634)
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EMPTY_INTERRUPT(PCINT0_vect);
 
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//EMPTY_INTERRUPT(PCINT0_vect);
 
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#ifdef PCINT_vect
 
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ISR(PCINT_vect) {
 
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#else
 
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ISR(PCINT0_vect) {
 
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#endif
 
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    irq_pcint = 1;
 
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}
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#else
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    #error Unrecognized MCU type
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#endif
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        pushed = push_event(B_RELEASE);
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    }
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    // check if sequence matches any defined sequences
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    // if so, send event to current state callback
 
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    // send event to the current state callback
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    if (pushed) {
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        button_last_state = pressed;
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        emit_current_event(0);