mirror of
https://github.com/clockworkpi/DevTerm.git
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116 lines
2.2 KiB
C++
116 lines
2.2 KiB
C++
#include "keys.h"
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static bool key_debouncing = false;
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static uint16_t key_debouncing_time = 0;
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uint8_t keys_io[ KEYS_NUM ]= {KEY1,KEY2,KEY3,KEY4,KEY5,KEY6,KEY7,KEY8,KEY9,KEY10,KEY11,KEY12,KEY13,KEY14,KEY15,KEY16};
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/* keys state(1:on, 0:off) */
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static uint16_t keys;
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static uint16_t keys_debouncing;
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static uint16_t keys_prev;
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static int8_t keys_jack_idx=-1;
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static uint16_t keys_jack_time = 0;
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void init_keys(){
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int i;
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for(i=0;i<KEYS_NUM;i++) {
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pinMode( keys_io[i],INPUT_PULLUP);
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}
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}
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uint8_t scan_keys(){
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uint16_t data;
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uint8_t s;
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data = 0;
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delayMicroseconds(20);
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for(int i = 0;i < KEYS_NUM;i++) {
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s = digitalRead(keys_io[i]); //HIGH =0,LOW = 1
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if( s == LOW ){
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data |= 1 << i;
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}else {
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data |= 0 << i;
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}
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}
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if ( keys_debouncing != data ) {
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keys_debouncing = data;
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key_debouncing = true;
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key_debouncing_time = millis();
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}
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if (key_debouncing == true && ( (millis() - key_debouncing_time) > KEY_DEBOUNCE )) {
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keys = keys_debouncing;
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debouncing = false;
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}
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return 1;
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}
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void print_keys(DEVTERM*dv) {
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char buff[128];
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for (int i = 0; i < KEYS_NUM; i++) {
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if( keys & (1<< i) ){
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sprintf(buff,"B%d pressed\n",i+1);
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dv->_Serial->print(buff);
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}
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}
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}
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void keys_task(DEVTERM*dv){
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uint16_t _change = 0;
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scan_keys();
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uint16_t _mask =1;
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for(uint8_t c=0;c < KEYS_NUM;c++,_mask <<=1){
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if( (keys_prev & _mask) == 0 && (keys & _mask) > 0){
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keypad_action(dv,c,KEY_PRESSED);
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}
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if( (keys_prev & _mask) > 0 && (keys & _mask) == 0){
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keypad_action(dv,c,KEY_RELEASED);
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}
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if( (keys_prev & _mask) > 0 && (keys & _mask) > 0) { ////same key
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if( c >= 0 && c < 4) {// only allow B1-B4
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if( keys_jack_idx == -1){
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keys_jack_idx = c;
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}else{
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if(keys_jack_idx != c) {
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keys_jack_time = 0;
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keys_jack_idx = c;
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}else{
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keys_jack_time +=1;
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if( keys_jack_time % (KEY_DEBOUNCE*20) == 0){
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keypad_action(dv,c,KEY_PRESSED);
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}
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}
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}
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}
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}
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}
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keys_prev = keys;
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}
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void keys_init(DEVTERM*dv){
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init_keys();
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//center the position
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dv->Joystick->X(511);
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dv->Joystick->Y(511);
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}
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