70 lines
2.0 KiB
C
70 lines
2.0 KiB
C
#ifndef BUGHAL_H
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#define BUGHAL_H
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#include <stdbool.h>
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/* Hardware abstraction layer for Pentabug hardware */
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enum {
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BUZZR_OUT, //initialize buzzer for OUTPUT mode (emmiting soundwaves)
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BUZZR_IN
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//initialize buzzer for INPUT mode (registering soundwaves)
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};
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#define LED_L (1 << PORTC0)
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#define LED_R (1 << PORTC2)
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#define MOTOR_ON 1
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#define MOTOR_OFF 0
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#define BTN_RIGHT 1
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#define BTN_LEFT 0
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#define BTN_BUTTONS 2 //numer of Buttons
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#define BTN_T_DEBOUNCE 5 // 50ms debounce time = minimum short press time
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#define BTN_T_LONGFACT 10 // after 10 * T_DEBOUNCE = 500ms button registers as long pressed
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//BUTTON state machine states
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#define BTNST_NTRL 0 // neutral - initial state nothing interesting, please go along
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#define BTNST_DBNC 1 // debounce - pin went up, but we wait for things to stabilize and stop oscillating
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#define BTNST_SDN 4 // affirmative, button is pressed,
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// and it's pressed no longer than
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// BTN_T_LONGFACT * BTN_T_DEBOUNCE * 10ms
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#define BTNST_SUP 8 // and button went up after beeing pressed for a _short_ time
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#define BTNST_LDN 16 // button is still down for more than
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//BTN_T_LONGFACT * BTN_T_DEBOUNCE * 10ms
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#define BTNST_LUP 32 // button came up after being pressed for a long time
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#define BTNST_SUPDBNC 64 // debounce after short up
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#define BTNST_LUPDBNC 128 // debounce after long up
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void init_leds(void);
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void led_on(int);
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void led_off(int);
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void init_buzzr(void);
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void init_mic(void);
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void buzzr_up(void);
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void buzzr_down(void);
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void buzzr_off(void);
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void buzzr_inv(void);
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// init ports and stuff for button functions
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void init_switch(void);
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// direct low level access to switches
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bool switch_l(void); //switch pressed?
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bool switch_r(void); //switch pressed?
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void init_motor(void);
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void set_motor(int);
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// higher level functions for accessing switches
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void button_poll(void); //needs to be polled in regular intervalls (lets say every 10ms)
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// reset button to neutral state
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void button_clear(uint8_t button);
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//test if buttonstate of btn eqals btnstate, returns true if yes
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bool btn_state(uint8_t btnstate, uint8_t btn);
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#endif
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