/*FUNCTION*********************************************************************
*
* Function Name : PDB_DRV_Init
* Description : Initialize the PDB counter and trigger input for PDB module.
* It resets PDB registers and enables the clock for PDB. So it should be
* called before any operation to PDB module. After initialized, the PDB can
* ack as a triggered timer, which lays the foundation for other features in
* PDB module.
*
*END*************************************************************************/
pdb_status_t PDB_DRV_Init(uint32_t instance, const pdb_timer_config_t *userConfigPtr)
{
assert(instance < PDB_INSTANCE_COUNT);
PDB_Type * base = g_pdbBase[instance];
if (!userConfigPtr)
{
return kStatus_PDB_InvalidArgument;
}
/* Enable the clock gate from clock manager. */
CLOCK_SYS_EnablePdbClock(instance);
/* Reset the registers for PDB module to reset state. */
PDB_HAL_Init(base);
PDB_HAL_Enable(base);
PDB_HAL_ConfigTimer(base, userConfigPtr);
/* Configure NVIC. */
if (userConfigPtr->intEnable)
{
INT_SYS_EnableIRQ(g_pdbIrqId[instance] );/* Enable PDB interrupt in NVIC level.*/
}
else
{
INT_SYS_DisableIRQ(g_pdbIrqId[instance] );/* Disable PDB interrupt in NVIC level.*/
}
return kStatus_PDB_Success;
}
/*************************************************************************
* Function Name: PDB_init
* Parameters: none
* Return: none
* Description: PDB module initialization
*************************************************************************/
void PDB_init(void)
{
pdb_timer_config_t pdbUserConfig;
PDB_HAL_Init(PDB0_BASE_PTR);
PDB_HAL_SetAdcPreTriggerOutputEnable(PDB0_BASE_PTR, 0, (1U<<0)|(1U<<1), true);
PDB_HAL_SetAdcPreTriggerEnable(PDB0_BASE_PTR, 0, (1U<<0)|(1U<<1), true);
PDB_HAL_SetAdcPreTriggerBackToBackEnable(PDB0_BASE_PTR, 0, (1U<<1), true);
PDB_HAL_SetAdcPreTriggerDelayValue(PDB0_BASE_PTR, 0, 0, (PWM_MODULO / 6));
// Set load register mode
pdbUserConfig.loadValueMode = kPdbLoadValueImmediately;
// Select PDB external trigger source, it is from FTM0
pdbUserConfig.triggerInput = kPdbTrigger8;
PDB_HAL_ConfigTimer(PDB0_BASE_PTR,&pdbUserConfig);
PDB_HAL_Enable(PDB0_BASE_PTR);
PDB_HAL_SetTimerModulusValue(PDB0_BASE_PTR, 0x7fff);
PDB_HAL_SetLoadValuesCmd(PDB0_BASE_PTR);
// Set load register mode
pdbUserConfig.clkPreDiv = kPdbClkPreDivBy1;
pdbUserConfig.loadValueMode = kPdbLoadValueAtNextTrigger;
// Select PDB external trigger source, it is from FTM0
pdbUserConfig.triggerInput = kPdbTrigger8;
pdbUserConfig.seqErrIntEnable = true;
pdbUserConfig.clkPreMultFactor = kPdbClkPreMultFactorAs1;
PDB_HAL_ConfigTimer(PDB0_BASE_PTR,&pdbUserConfig);
PDB_HAL_SetLoadValuesCmd(PDB0_BASE_PTR);
enable_irq(g_pdbIrqId[0]);
set_irq_priority(g_pdbIrqId[0], ISR_PRIORITY_PDB0);
}
