Button sequence control

[CY]

Hi,

Recently, I was trying to move my project from STM to Nordic IC.

I just wonder how to implement the below codes into the nRF52832 or how to program it in Nordic environment.

The current SDK I use is 15.2. Whether there is any inc and src files I need to add for the application.

The program purpose is doing the feature like one-click, double-click, press and hold function.

tClockTime presTimeCurr = 0, relsTimeCurr = 0, presTimePrev = 0, relsTimePrev = 0;
BOOL handleButtonEvent = FALSE;

tClockTime Clock_Time(void)
{
return sys_tick_count;
}

void Button_IrqHandler(void)
{
  if(SdkEvalPushButtonGetITPendingBit(USER_BUTTON) == SET) 
  {
    if (SdkEvalPushButtonGetState(USER_BUTTON) == RESET) {
      presTimePrev = presTimeCurr;
      presTimeCurr = Clock_Time();
    } else {
      relsTimePrev = relsTimeCurr;
      relsTimeCurr = Clock_Time();
      handleButtonEvent = TRUE;
    }
    SdkEvalPushButtonClearITPendingBit(USER_BUTTON);
  }
}


void DeviceInputData(void)
{
  uint8_t char_read;
  if (handleButtonEvent && (Clock_Time() - relsTimeCurr > 500)) {
    if (relsTimePrev == 0 || relsTimeCurr - relsTimePrev > 500) {
      if (relsTimeCurr - presTimeCurr > 1500) {
        char_read = 'A';
      } else {
        char_read = 'a';
      }
    } else {
      char_read = 'b';
    }
    handleButtonEvent = FALSE;
  }
}

Question 1 Whether there is suitable solution for my requirement?

Question 2 Should I use app_button instead of bsp_button?

Question 3 I supposed I need timer to count the tick, which source I should use?

Question 4 Is there any easy way I could shift my STM32 program to Nordic, though I know the SDK is quite different.

I apologize for asking multiple question, since I am still not familiar with Nordic.

I hope I could move my project from STM to Nordic in a smooth way.

[Hung Bui]

Hi Wedy, 

1. I don't see any problem on what you want to achieve. 

2. I think it's better to use app_button

3. The app_button already use a timer to detect if a button is pressed for a period of time (detection_delay for debouncing). However, there is no detection if it's double click or long hold. 

You can either modify the app_button to add these feature, or create a library that use app_button to detect if it's double click or it's a long hold.

4. I don't think there is an easy way to port the original code for STM32 to Nordic except for re-writing the code.

[CY]

See, I will try to modified the app_button.

Thanks.