led.h File Reference

Functions
void	LedBlinkInit (blt_int16u interval_ms)
	Initializes the LED blink driver.
void	LedBlinkTask (void)
	Task function for blinking the LED as a fixed timer interval.
void	LedBlinkExit (void)
	Cleans up the LED blink driver. This is intended to be used upon program exit.

Function Documentation

LedBlinkExit()

void LedBlinkExit

(

void

)

Cleans up the LED blink driver. This is intended to be used upon program exit.

Returns

none.

Definition at line 101 of file led.c.

{
  /* turn the LED off */
  HAL_GPIO_WritePin(STATUS_LED_PORT, STATUS_LED_PIN, GPIO_PIN_RESET);
} /*** end of LedBlinkExit ***/

Referenced by CpuUserProgramStartHook().

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LedBlinkInit()

void LedBlinkInit

(

blt_int16u

interval_ms

)

Initializes the LED blink driver.

Parameters

interval_ms

Specifies the desired LED blink interval time in milliseconds.

Returns

none.

Definition at line 58 of file led.c.

{
  /* store the interval time between LED toggles */
  ledBlinkIntervalMs = interval_ms;
} /*** end of LedBlinkInit ***/

LedBlinkTask()

void LedBlinkTask

(

void

)

Task function for blinking the LED as a fixed timer interval.

Returns

none.

Definition at line 70 of file led.c.

{
  static blt_bool ledOn = BLT_FALSE;
  static blt_int32u nextBlinkEvent = 0;
 
  /* check for blink event */
  if (TimerGet() >= nextBlinkEvent)
  {
    /* toggle the LED state */
    if (ledOn == BLT_FALSE)
    {
      ledOn = BLT_TRUE;
      HAL_GPIO_WritePin(STATUS_LED_PORT, STATUS_LED_PIN, GPIO_PIN_SET);
    }
    else
    {
      ledOn = BLT_FALSE;
      HAL_GPIO_WritePin(STATUS_LED_PORT, STATUS_LED_PIN, GPIO_PIN_RESET);
    }
    /* schedule the next blink event */
    nextBlinkEvent = TimerGet() + ledBlinkIntervalMs;
  }
} /*** end of LedBlinkTask ***/

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