/*----------------------------------------------------------------------------*
* NAME
* InitAlertTagHardware - initialize application hardware
*
* DESCRIPTION
* This function is called upon a power reset to initialize the PIOs
* and configure their initial states.
*
* RETURNS
* Nothing.
*
*----------------------------------------------------------------------------*/
extern void InitAlertTagHardware(void)
{
#ifndef DEBUG_THRU_UART
/* Don't wakeup on UART RX line */
SleepWakeOnUartRX(FALSE);
#endif
/* Setup PIOs
* PIO3 - Buzzer - BUZZER_PIO
* PIO4 - LED 1 - LED_PIO
* PIO11 - Button - BUTTON_PIO
*/
PioSetModes(PIO_BIT_MASK(BUTTON_PIO), pio_mode_user);
PioSetDir(BUTTON_PIO, PIO_DIRECTION_INPUT); /* input */
PioSetPullModes(PIO_BIT_MASK(BUTTON_PIO), pio_mode_strong_pull_up);
/* Setup button on PIO11 */
PioSetEventMask(PIO_BIT_MASK(BUTTON_PIO), pio_event_mode_both);
#ifdef ENABLE_LEDBLINK
/* PWM is being used for LED glowing.*/
PioSetModes(PIO_BIT_MASK(LED_PIO), pio_mode_pwm1);
/* Advertising parameters are being configured for PWM right now. When
* application moves to connection state, we change PWM parameters to
* the ones for connection
*/
PioConfigPWM(LED_PWM_INDEX_1, pio_pwm_mode_push_pull, DULL_LED_ON_TIME_ADV,
DULL_LED_OFF_TIME_ADV, DULL_LED_HOLD_TIME_ADV, BRIGHT_LED_OFF_TIME_ADV,
BRIGHT_LED_ON_TIME_ADV, BRIGHT_LED_HOLD_TIME_ADV, LED_RAMP_RATE);
PioEnablePWM(LED_PWM_INDEX_1, FALSE);
#endif /* ENABLE_LEDBLINK */
#ifdef ENABLE_BUZZER
PioSetModes(PIO_BIT_MASK(BUZZER_PIO), pio_mode_pwm0);
/* Configure the buzzer on PIO3 */
PioConfigPWM(BUZZER_PWM_INDEX_0, pio_pwm_mode_push_pull, DULL_BUZZ_ON_TIME,
DULL_BUZZ_OFF_TIME, DULL_BUZZ_HOLD_TIME, BRIGHT_BUZZ_ON_TIME,
BRIGHT_BUZZ_OFF_TIME, BRIGHT_BUZZ_HOLD_TIME, BUZZ_RAMP_RATE);
PioEnablePWM(BUZZER_PWM_INDEX_0, FALSE);
#endif /* ENABLE_BUZZER */
/* Set the I2C pins to pull down */
PioSetI2CPullMode(pio_i2c_pull_mode_strong_pull_down);
}
/*----------------------------------------------------------------------------*
* NAME
* SetIndication
*
* DESCRIPTION
* This function indicates the app state through LED blinking
*
* RETURNS/MODIFIES
* Nothing.
*
*----------------------------------------------------------------------------*/
extern void SetIndication(app_indication state)
{
#ifdef ENABLE_LEDBLINK
if(state == app_ind_stop)
{
/*Stop LED glowing */
PioEnablePWM(LED_PWM_INDEX_1, FALSE);
/* Reconfigure LED to pio_mode_user. This reconfiguration has been done
* because When PWM is disabled, LED pio value remains same as it was at
* the exact time of disabling. So if LED was on, it may remain ON even
* after PWM disabling. So it is better to reconfigure it to user mode.
* It will reconfigured to PWM mode while enabling.
*/
PioSetModes(PIO_BIT_MASK(LED_PIO), pio_mode_user);
PioSet(LED_PIO, FALSE);
}
else
{
if(state == app_ind_adv)
{
/* Fast Blinking for advertising */
PioConfigPWM(LED_PWM_INDEX_1, pio_pwm_mode_push_pull,
DULL_LED_ON_TIME_ADV, DULL_LED_OFF_TIME_ADV,
DULL_LED_HOLD_TIME_ADV, BRIGHT_LED_ON_TIME_ADV,
BRIGHT_LED_OFF_TIME_ADV, BRIGHT_LED_HOLD_TIME_ADV,
LED_RAMP_RATE);
}
else if(state == app_ind_conn)
{
/* slow blinking for connected state */
PioConfigPWM(LED_PWM_INDEX_1, pio_pwm_mode_push_pull,
DULL_LED_ON_TIME_CONN, DULL_LED_OFF_TIME_CONN,
DULL_LED_HOLD_TIME_CONN, BRIGHT_LED_ON_TIME_CONN,
BRIGHT_LED_OFF_TIME_CONN, BRIGHT_LED_HOLD_TIME_CONN,
LED_RAMP_RATE);
}
PioSetModes(PIO_BIT_MASK(LED_PIO), pio_mode_pwm1);
/*Start LED glowing */
PioEnablePWM(LED_PWM_INDEX_1, TRUE);
PioSet(LED_PIO, TRUE);
}
#endif /* ENABLE_LEDBLINK */
}
void LcdDisplayBacklight(uint8 dull, uint8 bright)
{
PioConfigPWM
(
PWM_ID_LED, pio_pwm_mode_push_pull,
/* All time units are ~30us except for hold_time (which is ~16ms). */
dull, 100 - (dull % 101), 20, /* dull_on/off/hold_time */
bright, 100 - (bright % 101), 20, /* bright_on/off/hold_time */
255 /* ramp_rate */
);
} /* LcdDisplayBacklight */
/*----------------------------------------------------------------------------*
* NAME
* setPwmDutyCycle
*
* DESCRIPTION
* Configures PWM1 to generate a waveform of a specified duty cycle.
*
* PARAMETERS
* value A value in the range (0 to NUMBER_OF_STEPS). Setting
* it to 0 would set the duty cycle to 0%, while setting
* it to NUMBER_OF_STEPS would result in 100% duty cycle.
*
* RETURNS/MODIFIES
* None
*----------------------------------------------------------------------------*/
static void setPwmDutyCycle( uint8 value )
{
const uint8 total_period = NUMBER_OF_STEPS; /* Total period including on
and off times, in number of ticks */
PioConfigPWM(
1, /* Use the PWM1 */
pio_pwm_mode_push_pull, /* PWM1 is configured with push-pull
output current driver circuitry */
/* Pulse timings for the first part of the sequence */
/* ON time for the pulses during the first part of the
* sequence is (value * 30)us */
value,
/* OFF time for the pulses during the first part of the
* sequence is (total_period - value) * 30us */
(total_period - value),
/* Duration for which the first part of the sequence lasts for
* in units of 16ms. Since a fixed frequency waveform is
* produced, both parts of the sequence contain identical
* pulses. As ramping will not enabled for this PWM, the
* output switches from the first part of the sequence to
* the second part instantaneously. Since they are identical,
* the switching doesn't have any effect and hence the duration
* for which the first or second part of the sequence last
* doesn't really matter. We simply choose a non-zero value. */
1U,
/* Pulse timings for the second part of the sequence.
* This is chosen to be identical to the first part of the
* sequence as the output is supposed to be fixed frequency. */
/* ON time for the pulses during the second part of the
* sequence is also (value * 30)us */
value,
/* OFF time for the pulses during the second part of the
* sequence is also (total_period - value) * 30us */
(total_period - value),
/* Duration for which the second part of the sequence lasts for
* chosen to be 1 * 16ms */
1U,
/* Ramping is disabled as the output is supposed to be fixed
* frequency */
0U
);
}
/*----------------------------------------------------------------------------*
* NAME
* BuzzerInitHardware
*
* DESCRIPTION
* This function initialises the buzzer hardware.
*
* PARAMETERS
* None
*
* RETURNS
* Nothing
*----------------------------------------------------------------------------*/
extern void BuzzerInitHardware(void)
{
/* Configure the buzzer PIO to use PWM. */
PioSetModes(BUZZER_PIO_MASK, pio_mode_pwm0);
/* Configure the PWM for buzzer ON OFF values */
PioConfigPWM(BUZZER_PWM_INDEX_0, pio_pwm_mode_push_pull, DULL_BUZZ_ON_TIME,
DULL_BUZZ_OFF_TIME, DULL_BUZZ_HOLD_TIME, BRIGHT_BUZZ_ON_TIME,
BRIGHT_BUZZ_OFF_TIME, BRIGHT_BUZZ_HOLD_TIME, BUZZ_RAMP_RATE);
/* Disable buzzer for the time being. */
PioEnablePWM(BUZZER_PWM_INDEX_0, FALSE);
}
/*----------------------------------------------------------------------------*
* NAME
* InitTimeClientHardware-initialize application hardware
*
* DESCRIPTION
* This function is called upon a power reset to initialize the PIOs
* and configure their initial states.
*
* RETURNS
* Nothing.
*
*----------------------------------------------------------------------------*/
extern void InitTimeClientHardware(void)
{
/* Setup PIOs
* PIO3 - Buzzer - BUZZER_PIO
* PIO4 - LED 1 - LED_PIO
* PIO11 - Button - BUTTON_PIO
*/
PioSetModes(PIO_BIT_MASK(BUTTON_PIO), pio_mode_user);
PioSetDir(BUTTON_PIO, PIO_DIRECTION_INPUT); /* input */
PioSetPullModes(PIO_BIT_MASK(BUTTON_PIO), pio_mode_strong_pull_up);
/* Setup button on PIO11 */
PioSetEventMask(PIO_BIT_MASK(BUTTON_PIO), pio_event_mode_both);
/* Initialize Buzzer Hardware */
BuzzerInitHardware();
#ifdef ENABLE_LEDBLINK
/* PWM is being used for LED glowing.*/
PioSetModes(PIO_BIT_MASK(LED_PIO), pio_mode_pwm1);
/* Advertising parameters are being configured for PWM right now. When
* application moves to connection state, we change PWM parameters to
* the ones for connection
*/
PioConfigPWM(LED_PWM_INDEX_1, pio_pwm_mode_push_pull, DULL_LED_ON_TIME_ADV,
DULL_LED_OFF_TIME_ADV, DULL_LED_HOLD_TIME_ADV, BRIGHT_LED_OFF_TIME_ADV,
BRIGHT_LED_ON_TIME_ADV, BRIGHT_LED_HOLD_TIME_ADV, LED_RAMP_RATE);
PioEnablePWM(LED_PWM_INDEX_1, FALSE);
#endif /* ENABLE_LEDBLINK */
/* Set the I2C pins to pull down */
PioSetI2CPullMode(pio_i2c_pull_mode_strong_pull_down);
}
/*----------------------------------------------------------------------------*
* NAME
* AppInit
*
* DESCRIPTION
* This user application function is called after a power-on reset
* (including after a firmware panic), after a wakeup from Hibernate or
* Dormant sleep states, or after an HCI Reset has been requested.
*
* NOTE: In the case of a power-on reset, this function is called
* after AppPowerOnReset().
*
* PARAMETERS
* last_sleep_state [in] Last sleep state
*
* RETURNS
* Nothing
*----------------------------------------------------------------------------*/
void AppInit(sleep_state last_sleep_state)
{
/* Initialise UART communications */
DebugInit(1, NULL, NULL);
DebugWriteString("Configuring PWM Modes\r\n");
/* Configure the output PIO on which the slow flashing LED signal is
* generated */
PioSetDir(PIO_LED, PIO_DIR_OUTPUT);
/* SLOW FLASHING WITH PWM:
* Configure PWM 0 to have the following characteristics
* DULL LED Light is generated by having pulses of 0ms ON and
* 6ms OFF (~0% duty cycle)
* BRIGHT LED Light is generated by having pulses of 6ms ON and
* 0ms OFF (~100% duty cycle)
* Dullest and Brightest level are held for ~1s
*
* The brightness level ramps for ~1s when going from dullest to
* brightest and vice-versa */
if (PioConfigPWM(0, pio_pwm_mode_push_pull,
/* Pulse timings for the dullest part of the sequence:
* dullest part of the sequence has the pulse off for the whole
* period, in effect the line stays low for the duration for which
* the dullest part of the sequence lasts. */
0, /* ON time for the pulse is 0us */
255, /* OFF time for the pulse is (255 * 30)us */
62, /* Dullest part of the sequence lasts for
( 62 * 16 )ms before ramping up to the brightest
part of the sequence */
/* Pulse timings for the brightest part of the sequence:
* brightest part of the sequence has the pulse ON for the whole
* period, in effect the line stays high for the duration for which
* the brightest part of the sequence lasts. */
255, /* ON time for the pulse is (255 * 30)us */
0, /* OFF time for the pulse is 0us */
62, /* Brightest part of the sequence lasts for
( 62 * 16 )ms before ramping down to the dullest
part of the sequence */
/* Ramping between dullest and brightest parts of the sequence
* This parameter determines the duration for which the ramping
* lasts when going from dullest to the brightest (and vice-versa).
*
* The total duration for which the ramping lasts is determined by
* multiplying this value with one less than the difference between
* the on_time or off_time of the two states, whichever is bigger;
* in the units of 30us
* */
132 /* Ramping lasts for ((255-1) * 132 * 30)us */
))
{
DebugWriteString("PWM0 was set to ramp between brightest and dullest "
"levels\r\n");
/* Connect PWM0 output to LED */
PioSetMode(PIO_LED, pio_mode_pwm0);
/* Enable the PWM0 */
PioEnablePWM(0, TRUE);
}
else
{
DebugWriteString("PWM0 couldn't be configured\r\n");
}
/* Set both outputs to have strong internal pull ups */
PioSetPullModes((1UL << PIO_MOTOR) | (1UL << PIO_LED),
pio_mode_strong_pull_up);
/* Configure motor PIO to be output */
PioSetDir(PIO_MOTOR, PIO_DIR_OUTPUT);
/* Connect PWM1 output to motor PIO */
PioSetMode(PIO_MOTOR, pio_mode_pwm1);
/* Initialise timers */
TimerInit(MAX_APP_TIMERS, app_timers);
/* Call the function (with a dummy timer ID to start with) to configure
* the PWM1 with initial duty cycle and start a timer. When the timer
* expires the same function gets called again and the duty cycle for
* PWM1 gets updated. It takes care of restarting the timer and ensuring
* that duty cycle alternates between 0% and 100% back and forth. */
dutyCycleTask(TIMER_INVALID);
/* Enable the PWM1 */
PioEnablePWM(1, TRUE);
}
