test-button.c File Reference

#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include "inc/hw_ints.h"
#include "inc/hw_gpio.h"
#include "inc/hw_memmap.h"
#include "driverlib/debug.h"
#include "driverlib/gpio.h"
#include "driverlib/interrupt.h"
#include "driverlib/pin_map.h"
#include "driverlib/sysctl.h"
#include "driverlib/systick.h"
#include "driverlib/rom.h"
#include "libos/os.h"
#include "libbutton/button.h"
#include "libhw/hardware.h"

Include dependency graph for test-button.c:

Go to the source code of this file.

Functions
void	update_pid (notification button_bitmask)
int	main ()

Variables
uint32_t	button_left_pressed = 0
uint32_t	button_right_pressed = 0

Function Documentation

int main

(

void

)

Definition at line 43 of file test-button.c.

References button_metadata_init, BUTTONS_BOTH, GPIO_BOTH_EDGES, GPIO_PORTF_BASE, HW_BUTTON, hw_init, hw_subscribe, IntMasterDisable(), IntMasterEnable(), postpone_death, SYSCTL_OSC_MAIN, SYSCTL_SYSDIV_1, SYSCTL_USE_OSC, SYSCTL_XTAL_16MHZ, SysCtlClockSet(), and update_pid().

           {

    SysCtlClockSet(SYSCTL_SYSDIV_1 | SYSCTL_USE_OSC | SYSCTL_OSC_MAIN |
                   SYSCTL_XTAL_16MHZ);

    IntMasterDisable();

    button_metadata_init(GPIO_PORTF_BASE, BUTTONS_BOTH, GPIO_BOTH_EDGES);
    hw_init(HW_BUTTON, button_metadata);
    hw_subscribe(HW_BUTTON, button_metadata, update_pid);

    IntMasterEnable();

    postpone_death();
}

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void update_pid

(

notification

button_bitmask

)

Definition at line 32 of file test-button.c.

References notification::_int, BUTTON_LEFT, button_left_pressed, BUTTON_RIGHT, and button_right_pressed.

Referenced by main().

                                             {
    /* What was that technique we learned in 460n to avoid a bunch of
     branches? cond && action*/
    if (button_bitmask._int & BUTTON_LEFT) {
        button_left_pressed++;
    }
    if (button_bitmask._int & BUTTON_RIGHT) {
        button_right_pressed++;
    }
}

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Variable Documentation

uint32_t button_left_pressed = 0

Definition at line 29 of file test-button.c.

Referenced by update_pid().

uint32_t button_right_pressed = 0

Definition at line 30 of file test-button.c.

Referenced by update_pid().