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91 lines
2.6 KiB
C
91 lines
2.6 KiB
C
/* BlinkyButton/Button with uC/AO active-object framework */
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#include "uc_ao.h" /* uC/AO API */
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#include "bsp.h"
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#include <stdbool.h>
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/* The BlinkyButton AO =======================================================*/
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enum { INITIAL_BLINK_TIME = (OS_TICKS_PER_SEC / 4) };
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typedef struct {
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Active super; /* inherit Active base class */
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/* add private data for the AO... */
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TimeEvent te;
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bool isLedOn;
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uint32_t blink_time;
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} BlinkyButton;
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static void BlinkyButton_dispatch(BlinkyButton * const me, Event const * const e) {
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switch (e->sig) {
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case INIT_SIG:
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BSP_ledBlueOff();
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/* intentionally fall through...*/
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case TIMEOUT_SIG: {
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if (!me->isLedOn) { /* LED not on */
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BSP_ledGreenOn();
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me->isLedOn = true;
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TimeEvent_arm(&me->te, me->blink_time, 0U);
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}
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else { /* LED is on */
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BSP_ledGreenOff();
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me->isLedOn = false;
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TimeEvent_arm(&me->te, me->blink_time * 3U, 0U);
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}
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break;
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}
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case BUTTON_PRESSED_SIG: {
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INT8U err; /* uC/OS-II error status */
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BSP_ledBlueOn();
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me->blink_time >>= 1; /* shorten the blink time by factor of 2 */
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if (me->blink_time == 0U) {
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me->blink_time = INITIAL_BLINK_TIME;
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}
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break;
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}
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case BUTTON_RELEASED_SIG: {
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BSP_ledBlueOff();
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break;
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}
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default: {
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break;
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}
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}
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}
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void BlinkyButton_ctor(BlinkyButton * const me) {
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Active_ctor(&me->super, (DispatchHandler)&BlinkyButton_dispatch);
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TimeEvent_ctor(&me->te, TIMEOUT_SIG, &me->super);
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me->isLedOn = false;
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me->blink_time = INITIAL_BLINK_TIME;
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}
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OS_STK stack_blinkyButton[100]; /* task stack */
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static Event *blinkyButton_queue[10];
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static BlinkyButton blinkyButton;
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Active *AO_BlinkyButton = &blinkyButton.super;
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/* the main function =========================================================*/
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int main() {
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INT8U err;
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BSP_init(); /* initialize the BSP */
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OSInit(); /* initialize uC/OS-II */
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/* create AO and start it */
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BlinkyButton_ctor(&blinkyButton);
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Active_start(AO_BlinkyButton,
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2U,
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blinkyButton_queue,
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sizeof(blinkyButton_queue)/sizeof(blinkyButton_queue[0]),
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stack_blinkyButton,
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sizeof(stack_blinkyButton),
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0U);
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BSP_start(); /* configure and start the interrupts */
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OSStart(); /* start the uC/OS-II scheduler... */
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return 0; /* NOTE: the scheduler does NOT return */
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}
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