/*FUNCTION**********************************************************************
*
* Function Name : TSI_DRV_ChangeMode
* Description : The function change the current mode.
*
*END**************************************************************************/
tsi_status_t TSI_DRV_ChangeMode(uint32_t instance, const tsi_modes_t mode)
{
assert(instance < TSI_INSTANCE_COUNT);
TSI_Type * base = g_tsiBase[instance];
tsi_state_t * tsiState = g_tsiStatePtr[instance];
if((mode == tsiState->opMode) || (mode == tsi_OpModeNoChange))
{
return kStatus_TSI_Success;
}
if(mode >= tsi_OpModeCnt)
{
return kStatus_TSI_InvalidMode;
}
/* Critical section. Access to global variable */
if (kStatus_OSA_Success != OSA_MutexLock(&tsiState->lockChangeMode, OSA_WAIT_FOREVER))
{
return kStatus_TSI_Error;
}
if (tsiState->status != kStatus_TSI_Initialized)
{
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lockChangeMode);
return tsiState->status;
}
if(mode == tsi_OpModeNoise)
{
if(!tsiState->opModesData[mode].config.mode)
{
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lockChangeMode);
return kStatus_TSI_InvalidMode;
}
}else
{
if(tsiState->opModesData[mode].config.mode)
{
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lockChangeMode);
return kStatus_TSI_InvalidMode;
}
}
tsiState->opMode = mode;
TSI_HAL_SetConfiguration(base, &tsiState->opModesData[mode].config);
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lockChangeMode);
return kStatus_TSI_Success;
}
/*FUNCTION**********************************************************************
*
* Function Name : TSI_DRV_Measure
* Description : This function gets (measure) capacitance of enabled electrodes
* from the TSI module using a non-blocking method.
*
*END**************************************************************************/
tsi_status_t TSI_DRV_Measure(uint32_t instance)
{
assert(instance < TSI_INSTANCE_COUNT);
TSI_Type * base = g_tsiBase[instance];
tsi_state_t * tsiState = g_tsiStatePtr[instance];
/* Critical section. Access to global variable */
if (kStatus_OSA_Success != OSA_MutexLock(&tsiState->lock, OSA_WAIT_FOREVER))
{
return kStatus_TSI_Error;
}
if (tsiState->status != kStatus_TSI_Initialized)
{
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lock);
return tsiState->status;
}
tsiState->status = kStatus_TSI_Busy;
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lock);
TSI_HAL_DisableModule(base);
TSI_HAL_EnableSoftwareTriggerScan(base);
TSI_HAL_EnableModule(base);
TSI_HAL_StartSoftwareTrigger(base);
return kStatus_TSI_Success;
}
/*FUNCTION**********************************************************************
*
* Function Name : TSI_DRV_SetCallBackFunc
* Description : Set the TSI call back function pointer for non blocking measurement
*
*
*END**************************************************************************/
tsi_status_t TSI_DRV_SetCallBackFunc(uint32_t instance, const tsi_callback_t pFuncCallBack, void * usrData)
{
assert(instance < TSI_INSTANCE_COUNT);
tsi_state_t * tsiState = g_tsiStatePtr[instance];
/* Critical section. Access to global variable */
if (kStatus_OSA_Success != OSA_MutexLock(&tsiState->lock, OSA_WAIT_FOREVER))
{
return kStatus_TSI_Error;
}
if (g_tsiStatePtr[instance]->status != kStatus_TSI_Initialized)
{
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lock);
return g_tsiStatePtr[instance]->status;
}
g_tsiStatePtr[instance]->pCallBackFunc = pFuncCallBack;
g_tsiStatePtr[instance]->usrData = usrData;
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lock);
return kStatus_TSI_Success;
}
/*!
* @cond DOXYGEN_PRIVATE
*
* @brief Initialization of pit timer module
*
* Called by hwtimer_deinit. Disables the peripheral. Unregisters ISR.
*
* @param hwtimer[in] Pointer to hwtimer structure.
*
* @return kHwtimerSuccess Success.
* @return kHwtimerLockError When Locking failed.
* @return kHwtimerRegisterHandlerError When un-registration of the interrupt service routine failed.
*
* @see HWTIMER_SYS_PitInit
* @see HWTIMER_SYS_PitSetDiv
* @see HWTIMER_SYS_PitStart
* @see HWTIMER_SYS_PitStop
* @see HWTIMER_SYS_PitGetTime
* @see HWTIMER_SYS_PitIsr
* @see HWTIMER_SYS_PitIsrShared
*/
static _hwtimer_error_code_t HWTIMER_SYS_PitDeinit(hwtimer_t * hwtimer)
{
/* We belive that if isr is shared ,than is shared for every chanells */
uint32_t baseAddr = g_pitBaseAddr[0];
uint32_t pitChannel;
int i;
assert(NULL != hwtimer);
pitChannel = hwtimer->llContext[0U];
assert(pitChannel < FSL_FEATURE_PIT_TIMER_COUNT);
/* Remove Hwtimer from global array and disable interrupt on this channel */
PIT_HAL_StopTimer(baseAddr, pitChannel);
PIT_HAL_SetIntCmd(baseAddr, pitChannel, false);
PIT_HAL_ClearIntFlag(baseAddr, pitChannel);
/* Critical section. Access to global variable */
if (kStatus_OSA_Success != OSA_MutexLock(g_lock, OSA_WAIT_FOREVER))
{
return kHwtimerLockError;
}
/* Pit can have shared interrupt vectors. We need un-register interrupt only when all hwtimers are de-inited(set to NULL) */
g_hwtimersPit[pitChannel] = NULL;
if (kStatus_OSA_Success != OSA_MutexUnlock(g_lock))
{
return kHwtimerLockError;
}
/* Check if this is last hwtimer in pit_hwtimers_array */
for (i = 0U; i < FSL_FEATURE_PIT_TIMER_COUNT; i++)
{
if (NULL != g_hwtimersPit[i])
{
break;
}
}
if (i == FSL_FEATURE_PIT_TIMER_COUNT)
{
if(kStatus_OSA_Success != OSA_InstallIntHandler(kpitIrqIds[pitChannel], NULL))
{
return kHwtimerRegisterHandlerError;
}
}
/* Release lock if does not exists*/
/* Enter critical section to avoid interrupt release locking */
OSA_EnterCritical(kCriticalDisableInt);
if (kStatus_OSA_Success != OSA_MutexUnlock(g_lock))
{
return kHwtimerLockError;
}
g_lock = NULL;
OSA_ExitCritical(kCriticalDisableInt);
return kHwtimerSuccess;
}
/*FUNCTION**********************************************************************
*
* Function Name : TSI_DRV_EnableElectrode
* Description : Enables/Disables the electrode for measuring.
*
*END**************************************************************************/
tsi_status_t TSI_DRV_EnableElectrode(uint32_t instance, const uint32_t channel, const bool enable)
{
assert(instance < TSI_INSTANCE_COUNT);
assert(channel < FSL_FEATURE_TSI_CHANNEL_COUNT);
TSI_Type * base = g_tsiBase[instance];
tsi_state_t * tsiState = g_tsiStatePtr[instance];
/* Critical section. Access to global variable */
if (kStatus_OSA_Success != OSA_MutexLock(&tsiState->lock, OSA_WAIT_FOREVER))
{
return kStatus_TSI_Error;
}
if (tsiState->status != kStatus_TSI_Initialized)
{
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lock);
return tsiState->status;
}
/* Check the condition for low power mode. */
if((tsiState->opMode == tsi_OpModeLowPower) || (tsiState->opMode == tsi_OpModeProximity))
{
if(tsiState->opModesData[tsi_OpModeLowPower].enabledElectrodes != 0)
{
/* Only one elctrode can be enabled in low power mode and proximity. */
/* Disable al previous enabled. */
TSI_HAL_DisableChannels(base, 0xffffffff);
}
}
if(enable)
{
tsiState->opModesData[tsiState->opMode].enabledElectrodes |= (1U << channel);
TSI_HAL_EnableChannel(base, channel);
}
else
{
tsiState->opModesData[tsiState->opMode].enabledElectrodes &= ~(1U << channel);
TSI_HAL_DisableChannel(base, channel);
}
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lock);
return kStatus_TSI_Success;
}
/*FUNCTION**********************************************************************
*
* Function Name : TSI_DRV_Measure
* Description : This function gets (measure) capacitance of enabled electrodes
* from the TSI module using a non-blocking method.
*
*END**************************************************************************/
tsi_status_t TSI_DRV_Measure(uint32_t instance)
{
assert(instance < TSI_INSTANCE_COUNT);
TSI_Type * base = g_tsiBase[instance];
tsi_state_t * tsiState = g_tsiStatePtr[instance];
uint32_t first_pen, pen;
/* Critical section. Access to global variable */
if (kStatus_OSA_Success != OSA_MutexLock(&tsiState->lock, OSA_WAIT_FOREVER))
{
return kStatus_TSI_Error;
}
if (tsiState->status != kStatus_TSI_Initialized)
{
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lock);
return tsiState->status;
}
if(!tsiState->opModesData[tsiState->opMode].enabledElectrodes)
{
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lock);
return kStatus_TSI_InvalidChannel;
}
tsiState->status = kStatus_TSI_Busy;
first_pen = 0U;
pen = tsiState->opModesData[tsiState->opMode].enabledElectrodes;
while (((pen >> first_pen) & 0x1U) == 0U) {
first_pen++;
}
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lock);
TSI_HAL_DisableModule(base);
TSI_HAL_SetMeasuredChannelNumber(base, first_pen);
TSI_HAL_EnableSoftwareTriggerScan(base);
TSI_HAL_EnableModule(base);
TSI_HAL_StartSoftwareTrigger(base);
return kStatus_TSI_Success;
}
/*FUNCTION**********************************************************************
*
* Function Name : TSI_DRV_LoadConfiguration
* Description : The function load the configuration for one mode of operation.
*
*END**************************************************************************/
tsi_status_t TSI_DRV_LoadConfiguration(uint32_t instance, const tsi_modes_t mode, const tsi_operation_mode_t * operationMode)
{
assert(instance < TSI_INSTANCE_COUNT);
assert(operationMode);
TSI_Type * base;
tsi_state_t * tsiState = g_tsiStatePtr[instance];
if(mode >= tsi_OpModeCnt)
{
return kStatus_TSI_InvalidMode;
}
/* Critical section. Access to global variable */
if (kStatus_OSA_Success != OSA_MutexLock(&tsiState->lock, OSA_WAIT_FOREVER))
{
return kStatus_TSI_Error;
}
tsiState->opModesData[mode] = *operationMode;
/* In case that the loaded configuration is active one, update the HW also. */
if(mode == tsiState->opMode)
{
base = g_tsiBase[instance];
TSI_HAL_SetConfiguration(base, &tsiState->opModesData[mode].config);
TSI_HAL_EnableInterrupt(base);
TSI_HAL_EnableEndOfScanInterrupt(base);
}
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lock);
return kStatus_TSI_Success;
}
/*FUNCTION**********************************************************************
*
* Function Name : TSI_DRV_ChangeMode
* Description : The function change the current mode.
*
*END**************************************************************************/
tsi_status_t TSI_DRV_ChangeMode(uint32_t instance, const tsi_modes_t mode)
{
assert(instance < TSI_INSTANCE_COUNT);
TSI_Type * base = g_tsiBase[instance];
tsi_state_t * tsiState = g_tsiStatePtr[instance];
if((mode == tsiState->opMode) || (mode == tsi_OpModeNoChange))
{
return kStatus_TSI_Success;
}
if(mode >= tsi_OpModeNoise) /* Neither the noise mode is not supported in TSIv1&2 revision. */
{
return kStatus_TSI_InvalidMode;
}
/* Critical section. Access to global variable */
if (kStatus_OSA_Success != OSA_MutexLock(&tsiState->lockChangeMode, OSA_WAIT_FOREVER))
{
return kStatus_TSI_Error;
}
if (tsiState->status != kStatus_TSI_Initialized)
{
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lockChangeMode);
return tsiState->status;
}
tsiState->opMode = mode;
TSI_HAL_SetConfiguration(base, &tsiState->opModesData[mode].config);
/* Disable all electrodes */
TSI_HAL_DisableChannels(base, 0xffff);
/* Enable the set electrodes for current operation mode */
TSI_HAL_EnableChannels(base, tsiState->opModesData[mode].enabledElectrodes);
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lockChangeMode);
return kStatus_TSI_Success;
}
/*FUNCTION**********************************************************************
*
* Function Name : TSI_DRV_EnableElectrode
* Description : Enables/Disables the electrode for measuring.
*
*END**************************************************************************/
tsi_status_t TSI_DRV_EnableElectrode(uint32_t instance, const uint32_t channel, const bool enable)
{
assert(instance < TSI_INSTANCE_COUNT);
assert(channel < FSL_FEATURE_TSI_CHANNEL_COUNT);
tsi_state_t * tsiState = g_tsiStatePtr[instance];
/* Critical section. Access to global variable */
if (kStatus_OSA_Success != OSA_MutexLock(&tsiState->lock, OSA_WAIT_FOREVER))
{
return kStatus_TSI_Error;
}
if (tsiState->status != kStatus_TSI_Initialized)
{
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lock);
return tsiState->status;
}
/* Check the condition for low power mode. */
if((tsiState->opMode == tsi_OpModeLowPower) || (tsiState->opMode == tsi_OpModeProximity))
{
tsiState->opModesData[tsiState->opMode].enabledElectrodes = 0;
}
if(enable)
{
tsiState->opModesData[tsiState->opMode].enabledElectrodes |= (1U << channel);
}
else
{
tsiState->opModesData[tsiState->opMode].enabledElectrodes &= ~(1U << channel);
}
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lock);
return kStatus_TSI_Success;
}
/*FUNCTION**********************************************************************
*
* Function Name : TSI_DRV_Recalibrate
* Description : The function force the recalibration process of TSI parameters.
*
*END**************************************************************************/
tsi_status_t TSI_DRV_Recalibrate(uint32_t instance, uint32_t * lowestSignal)
{
assert(instance < TSI_INSTANCE_COUNT);
TSI_Type * base = g_tsiBase[instance];
tsi_state_t * tsiState = g_tsiStatePtr[instance];
/* Critical section. Access to global variable */
if (kStatus_OSA_Success != OSA_MutexLock(&tsiState->lock, OSA_WAIT_FOREVER))
{
return kStatus_TSI_Error;
}
if (tsiState->status != kStatus_TSI_Initialized)
{
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lock);
return tsiState->status;
}
tsiState->status = kStatus_TSI_Recalibration;
*lowestSignal = TSI_HAL_Recalibrate(base, &(tsiState->opModesData[tsiState->opMode].config),
tsiState->opModesData[tsiState->opMode].enabledElectrodes,
g_tsiParamLimits[tsiState->opMode]);
tsiState->status = kStatus_TSI_Initialized;
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lock);
if(*lowestSignal == 0)
{
return kStatus_TSI_Error;
}
else
{
return kStatus_TSI_Success;
}
}
/*FUNCTION**********************************************************************
*
* Function Name : TSI_DRV_DisableLowPower
* Description : Enables/Disables the low power module.
*
*END**************************************************************************/
tsi_status_t TSI_DRV_DisableLowPower(uint32_t instance, const tsi_modes_t mode)
{
assert(instance < TSI_INSTANCE_COUNT);
TSI_Type * base = g_tsiBase[instance];
tsi_state_t * tsiState = g_tsiStatePtr[instance];
tsi_status_t status;
/* Critical section. Access to global variable */
if (kStatus_OSA_Success != OSA_MutexLock(&tsiState->lock, OSA_WAIT_FOREVER))
{
return kStatus_TSI_Error;
}
if (tsiState->status != kStatus_TSI_LowPower)
{
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lock);
return tsiState->status;
}
TSI_HAL_DisableLowPower(base);
TSI_HAL_EnableInterrupt(base);
TSI_HAL_EnableEndOfScanInterrupt(base);
TSI_HAL_EnableSoftwareTriggerScan(base);
tsiState->status = kStatus_TSI_Initialized;
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lock);
status = TSI_DRV_ChangeMode(instance, mode);
return status;
}
/**
* send data packet
* @param pHostInterface_packet [description]
*/
static void HostInterface_FlushPacket(hostInterface_packet_t * pHostInterface_packet)
{
osa_status_t
status = OSA_MutexLock(&uartTxAccessMutex, OSA_WAIT_FOREVER );
if ( kStatus_OSA_Success == status )
{
#if defined( SEND_PACKETS_VIA_UART_INT )
UART_DRV_SendDataBlocking( gHostInterface_instance, (uint8_t*)pHostInterface_packet, pHostInterface_packet->length + gHostInterface_headerSize + 1, UART_TIMEOUT );
#elif defined( SEND_PACKETS_VIA_UART_DMA )
UART_DRV_EdmaSendDataBlocking( gHostInterface_instance, (uint8_t*)pHostInterface_packet, pHostInterface_packet->length + gHostInterface_headerSize + 1, UART_TIMEOUT );
#endif
#if defined( HEXIWEAR_DEBUG )
// UART_DRV_SendDataBlocking( HEXIWEAR_DEBUG_UART_INSTANCE, (uint8_t*)pHostInterface_packet, pHostInterface_packet->length + gHostInterface_headerSize + 1, UART_TIMEOUT );
#endif
}
OSA_MutexUnlock(&uartTxAccessMutex);
}
/*FUNCTION**********************************************************************
*
* Function Name : TSI_DRV_AbortMeasure
* Description : This function aborts possible measure cycle.
*
*END**************************************************************************/
tsi_status_t TSI_DRV_AbortMeasure(uint32_t instance)
{
assert(instance < TSI_INSTANCE_COUNT);
TSI_Type * base = g_tsiBase[instance];
tsi_status_t status = kStatus_TSI_Success;
tsi_state_t * tsiState = g_tsiStatePtr[instance];
/* Critical section. Access to global variable */
if (kStatus_OSA_Success != OSA_MutexLock(&tsiState->lock, OSA_WAIT_FOREVER))
{
return kStatus_TSI_Error;
}
if(tsiState->status == kStatus_TSI_Recalibration)
{
status = kStatus_TSI_Recalibration;
}
else if(tsiState->status != kStatus_TSI_Initialized)
{
TSI_HAL_ClearOutOfRangeFlag(base);
TSI_HAL_ClearEndOfScanFlag(base);
TSI_HAL_DisableModule(base);
if(tsiState->isBlockingMeasure)
{
/* Signal the synchronous completion object. */
OSA_SemaPost(&tsiState->irqSync);
tsiState->isBlockingMeasure = false;
}
/* Return status of the driver to initialized state */
tsiState->status = kStatus_TSI_Initialized;
}
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lock);
return status;
}
/**
* send data packet
* @param pHostInterface_packet [description]
*/
static void HostInterface_FlushPacket(hostInterface_packet_t * pHostInterface_packet)
{
osa_status_t
status = OSA_MutexLock(&uartTxAccessMutex, OSA_WAIT_FOREVER );
if ( kStatus_OSA_Success == status )
{
#if defined( SEND_VIA_UART_INT )
GPIO_DRV_TogglePinOutput( PROBE_PIN );
UART_DRV_SendDataBlocking( gHostInterface_instance, (uint8_t*)pHostInterface_packet, pHostInterface_packet->length + gHostInterface_headerSize + 1, 10 );
#elif defined( SEND_VIA_UART_DMA )
UART_DRV_EdmaSendDataBlocking( gHostInterface_instance, (uint8_t*)pHostInterface_packet, pHostInterface_packet->length + gHostInterface_headerSize + 1, 100 );
#endif
#if defined( HEXIWEAR_DEBUG )
UART_DRV_SendDataBlocking( HEXIWEAR_DEBUG_INSTANCE, (uint8_t*)pHostInterface_packet, pHostInterface_packet->length + gHostInterface_headerSize + 1, 100 );
}
#endif
OSA_MutexUnlock(&uartTxAccessMutex);
}
/*FUNCTION**********************************************************************
*
* Function Name : TSI_DRV_SaveConfiguration
* Description : The function save the configuration for one mode of operation.
*
*END**************************************************************************/
tsi_status_t TSI_DRV_SaveConfiguration(uint32_t instance, const tsi_modes_t mode, tsi_operation_mode_t * operationMode)
{
assert(instance < TSI_INSTANCE_COUNT);
assert(operationMode);
tsi_state_t * tsiState = g_tsiStatePtr[instance];
if(mode >= tsi_OpModeCnt)
{
return kStatus_TSI_InvalidMode;
}
/* Critical section. Access to global variable */
if (kStatus_OSA_Success != OSA_MutexLock(&tsiState->lock, OSA_WAIT_FOREVER))
{
return kStatus_TSI_Error;
}
*operationMode = tsiState->opModesData[mode];
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lock);
return kStatus_TSI_Success;
}
/*!
* @cond DOXYGEN_PRIVATE
*
* @brief This function initializes caller allocated structure according to given
* numerical identifier of the timer.
*
* Called by hwtimer_init().
* Initializes the HWTIMER structure.
* Sets interrupt priority and registers ISR.
*
* @param hwtimer[in] Returns initialized hwtimer structure handle.
* @param pitId[in] Determines PIT module and pit channel.
* @param isrPrior[in] Interrupt priority for PIT
* @param data[in] Specific data. Not used in this timer.
*
* @return kHwtimerSuccess Success.
* @return kHwtimerInvalidInput When channel number does not exist in pit module.
* @return kHwtimerLockError When Locking failed.
* @return kHwtimerRegisterHandlerError When registration of the interrupt service routine failed.
*
* @see HWTIMER_SYS_PitDeinit
* @see HWTIMER_SYS_PitSetDiv
* @see HWTIMER_SYS_PitStart
* @see HWTIMER_SYS_PitStop
* @see HWTIMER_SYS_PitGetTime
* @see HWTIMER_SYS_PitIsr
* @see HWTIMER_SYS_PitIsrShared
*/
static _hwtimer_error_code_t HWTIMER_SYS_PitInit(hwtimer_t * hwtimer, uint32_t pitId, uint32_t isrPrior, void *data)
{
uint32_t pitChannel;
uint32_t baseAddr = g_pitBaseAddr[0];
if (FSL_FEATURE_PIT_TIMER_COUNT < pitId)
{
return kHwtimerInvalidInput;
}
assert(NULL != hwtimer);
/* We need to store pitId of timer in context struct */
hwtimer->llContext[0U] = pitId;
pitChannel = hwtimer->llContext[0U];
/* Un-gate pit clock */
CLOCK_SYS_EnablePitClock(0U);
/* Enable PIT module clock */
PIT_HAL_Enable(baseAddr);
/* Allows the timers to be stopped when the device enters the Debug mode. */
PIT_HAL_SetTimerRunInDebugCmd(baseAddr, false);
/* Disable timer and interrupt */
PIT_HAL_StopTimer(baseAddr, pitChannel);
PIT_HAL_SetIntCmd(baseAddr, pitChannel, false);
/* Clear any pending interrupt */
PIT_HAL_ClearIntFlag(baseAddr, pitChannel);
/* Create lock if does not exists*/
/* Enter critical section to avoid interrupt create locking */
OSA_EnterCritical(kCriticalDisableInt);
if (g_lock == NULL)
{
/* Initialize synchronization object */
if (kStatus_OSA_Success != OSA_MutexCreate(&g_lock_data))
{
return kHwtimerLockError;
}
g_lock = &g_lock_data;
}
OSA_ExitCritical(kCriticalDisableInt);
assert(g_lock == &g_lock_data);
/* Critical section. Access to global variable */
if (kStatus_OSA_Success != OSA_MutexLock(g_lock, OSA_WAIT_FOREVER))
{
return kHwtimerLockError;
}
/* Store hwtimer in global array */
g_hwtimersPit[pitChannel] = hwtimer;
if (kStatus_OSA_Success != OSA_MutexUnlock(g_lock))
{
return kHwtimerLockError;
}
/* Enable PIT interrupt.*/
if (kStatus_OSA_Success != OSA_InstallIntHandler(kpitIrqIds[pitChannel], HWTIMER_SYS_PitIsr))
{
return kHwtimerRegisterHandlerError;
}
PIT_HAL_SetIntCmd(baseAddr, pitChannel, true);
INT_SYS_EnableIRQ(kpitIrqIds[pitChannel]);
return kHwtimerSuccess;
}
/*FUNCTION**********************************************************************
*
* Function Name : TSI_DRV_Init
* Description : Initialize whole the TSI peripheral to be ready to read capacitance changes
* To initialize the TSI driver, the configuration structure should be handled.
*
*END**************************************************************************/
tsi_status_t TSI_DRV_Init(uint32_t instance, tsi_state_t * tsiState, const tsi_user_config_t * tsiUserConfig)
{
assert(instance < TSI_INSTANCE_COUNT);
TSI_Type * base = g_tsiBase[instance];
tsi_state_t * tsiSt = g_tsiStatePtr[instance];
/* Critical section. */
OSA_EnterCritical(kCriticalDisableInt);
/* Exit if current instance is already initialized. */
if(tsiSt)
{
/* End of critical section. */
OSA_ExitCritical(kCriticalDisableInt);
return kStatus_TSI_Initialized;
}
/* Save runtime structure pointer.*/
tsiSt = g_tsiStatePtr[instance] = tsiState;
/* Clear the state structure for this instance. */
memset(tsiSt, 0, sizeof(tsi_state_t));
/* Create the mutex used by whole driver. */
OSA_MutexCreate(&tsiSt->lock);
/* Create the mutex used by change mode function. */
OSA_MutexCreate(&tsiSt->lockChangeMode);
/* Critical section. Access to global variable */
if (kStatus_OSA_Success != OSA_MutexLock(&tsiSt->lock, OSA_WAIT_FOREVER))
{
/* End of critical section. */
OSA_ExitCritical(kCriticalDisableInt);
return kStatus_TSI_Error;
}
/* End of critical section. */
OSA_ExitCritical(kCriticalDisableInt);
tsiSt->opMode = tsi_OpModeNormal;
tsiSt->opModesData[tsiSt->opMode].config = *tsiUserConfig->config; /* Store the hardware configuration. */
tsiSt->pCallBackFunc = tsiUserConfig->pCallBackFunc;
tsiSt->usrData = tsiUserConfig->usrData;
tsiSt->isBlockingMeasure = false;
/* Un-gate TSI module clock */
CLOCK_SYS_EnableTsiClock(instance);
/* Initialize the interrupt sync object. */
OSA_SemaCreate(&tsiSt->irqSync, 0);
TSI_HAL_Init(base);
TSI_HAL_SetConfiguration(base, &tsiSt->opModesData[tsiSt->opMode].config);
TSI_HAL_EnableInterrupt(base);
TSI_HAL_EnableEndOfScanInterrupt(base);
TSI_HAL_EnableSoftwareTriggerScan(base);
/* Disable all electrodes */
tsiState->opModesData[tsiState->opMode].enabledElectrodes = 0;
/* Enable TSI interrupt on NVIC level. */
INT_SYS_EnableIRQ(g_tsiIrqId[instance]);
tsiSt->status = kStatus_TSI_Initialized;
/* End of critical section. */
OSA_MutexUnlock(&tsiSt->lock);
return kStatus_TSI_Success;
}
/*FUNCTION**********************************************************************
*
* Function Name : TSI_DRV_EnableLowPower
* Description : Enables/Disables the low power module.
*
*END**************************************************************************/
tsi_status_t TSI_DRV_EnableLowPower(uint32_t instance)
{
assert(instance < TSI_INSTANCE_COUNT);
TSI_Type * base = g_tsiBase[instance];
tsi_state_t * tsiState = g_tsiStatePtr[instance];
tsi_status_t status;
uint32_t i;
int32_t channel = -1;
/* Critical section. Access to global variable */
if (kStatus_OSA_Success != OSA_MutexLock(&tsiState->lock, OSA_WAIT_FOREVER))
{
return kStatus_TSI_Error;
}
if((tsiState->opModesData[tsiState->opMode].config.thresl == 0) || (tsiState->opModesData[tsiState->opMode].config.thresh == 0))
{
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lock);
return kStatus_TSI_Error;
}
if ((status = TSI_DRV_ChangeMode(instance, tsi_OpModeLowPower)) != kStatus_TSI_Success)
{
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lock);
return status;
}
if(tsiState->opModesData[tsiState->opMode].enabledElectrodes == 0)
{
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lock);
return kStatus_TSI_InvalidChannel;
}
/* Configurate the peripheral for next use */
TSI_HAL_EnableOutOfRangeInterrupt(base);
TSI_HAL_EnableHardwareTriggerScan(base);
for(i = 0; i < FSL_FEATURE_TSI_CHANNEL_COUNT; i++)
{
if((uint32_t)(1 << i) & tsiState->opModesData[tsiState->opMode].enabledElectrodes)
{
channel = i;
break;
}
}
if(channel == -1)
{
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lock);
return kStatus_TSI_InvalidChannel;
}
tsiState->status = kStatus_TSI_LowPower;
TSI_HAL_EnableLowPower(base);
TSI_HAL_SetMeasuredChannelNumber(base, channel);
TSI_HAL_EnableInterrupt(base);
TSI_HAL_EnableModule(base);
/* End of critical section. */
OSA_MutexUnlock(&tsiState->lock);
return kStatus_TSI_Success;
}
uint32_t OS_Mutex_unlock(os_mutex_handle handle)
{
return ((kStatus_OSA_Success == OSA_MutexUnlock((mutex_t*) (handle))) ? OS_MUTEX_OK : OS_MUTEX_ERROR);
}
