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userControls.c
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userControls.c
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/** @file
* @brief Source file for button handlers
*/
#include <stdbool.h>
#include "project.h"
#include "assert.h"
#include "userControls.h"
#include "sysTickTimer.h"
#define BUTTON_PRESS 0
#define BUTTON_RELEASE 1U
#define BUTTON_LONG_PRESS_MS 3000U
#define BUTTON_MIDDLE_PRESS_MS 1000U
typedef struct
{
bool isInit;
bool isIRQ;
bool longPressSend;
uint32_t timeStampPrev;
uint32_t timeStampCur;
uint8_t curState;
uint8_t prevState;
onBtnChange_t onBtnChangeCb;
} userControl_t;
static userControl_t userControl = {.isInit = false};
CY_ISR(Isr_UC_Btn_Handler)
{
Button_ClearInterrupt();
userControl.isIRQ = true;
Isr_UC_Btn_ClearPending();
}
void userControl_Init(onBtnChange_t btn_cb)
{
ASSERT(NULL != btn_cb);
userControl.isInit = true;
userControl.onBtnChangeCb = btn_cb;
userControl.isIRQ = false;
userControl.prevState = BUTTON_RELEASE;
userControl.curState = BUTTON_RELEASE;
userControl.timeStampPrev = 0;
Isr_UC_Btn_StartEx(Isr_UC_Btn_Handler);
}
void userControl_Run(void)
{
ASSERT(userControl.isInit);
/* No bounce problem observed, skip debouncing for now. */
if (userControl.isIRQ)
{
userControl.isIRQ = false;
userControl.timeStampPrev = userControl.timeStampCur;
userControl.prevState = userControl.curState;
userControl.curState = Button_Read();
userControl.timeStampCur = sysTickTimer_GetTimeMs();
if ((userControl.prevState != userControl.curState) && (userControl.prevState == BUTTON_PRESS))
{
do
{
if (sysTickTimer_IsTimePassedMs(userControl.timeStampPrev, BUTTON_LONG_PRESS_MS))
{
userControl.onBtnChangeCb(BTN_LONG_PRESS);
break;
}
if (sysTickTimer_IsTimePassedMs(userControl.timeStampPrev, BUTTON_MIDDLE_PRESS_MS))
{
userControl.onBtnChangeCb(BTN_MIDDLE_PRESS);
break;
}
userControl.onBtnChangeCb(BTN_SHORT_PRESS);
} while(false);
}
}
}