/* ===================================================================*/
LDD_TDeviceData* DacLdd1_Init(LDD_TUserData *UserDataPtr)
{
DacLdd1_TDeviceData *DeviceDataPtr; /* LDD device structure */
/* Allocate HAL device structure */
/* {Default RTOS Adapter} Driver memory allocation: Dynamic allocation is simulated by a pointer to the static object */
DeviceDataPtr = &DeviceDataPtr__DEFAULT_RTOS_ALLOC;
DeviceDataPtr->DmaTransferDeviceDataPtr = NULL; /* DMA is not used */
DeviceDataPtr->UserDataPtr = UserDataPtr; /* Store the RTOS device structure */
/* SIM_SCGC6: DAC0=1 */
SIM_SCGC6 |= SIM_SCGC6_DAC0_MASK;
DAC_PDD_EnableDevice(DAC0_BASE_PTR,PDD_DISABLE); /* Disable device */
/* Initialization of pin routing */
/* PORTE_PCR30: ISF=0,MUX=0 */
PORTE_PCR30 &= (uint32_t)~(uint32_t)((PORT_PCR_ISF_MASK | PORT_PCR_MUX(0x07)));
/* DAC0_DAT0H: ??=0,??=0,??=0,??=0,DATA1=0 */
DAC0_DAT0H = DAC_DATH_DATA1(0x00);
/* DAC0_DAT0L: DATA0=0 */
DAC0_DAT0L = DAC_DATL_DATA0(0x00);
/* DAC0_C2: ??=0,??=0,??=0,DACBFRP=0,??=1,??=1,??=1,DACBFUP=1 */
DAC0_C2 = (DAC_C2_DACBFUP_MASK | 0x0EU);
/* DAC0_C1: DMAEN=0,??=0,??=0,??=0,??=0,DACBFMD=0,??=0,DACBFEN=0 */
DAC0_C1 = 0x00U;
/* DAC0_SR: ??=0,??=0,??=0,??=0,??=0,??=0,DACBFRPTF=0,DACBFRPBF=0 */
DAC0_SR = 0x00U;
/* DAC0_C0: DACEN=1,DACRFS=0,DACTRGSEL=0,DACSWTRG=0,LPEN=0,??=0,DACBTIEN=0,DACBBIEN=0 */
DAC0_C0 = DAC_C0_DACEN_MASK;
/* Registration of the device structure */
PE_LDD_RegisterDeviceStructure(PE_LDD_COMPONENT_DacLdd1_ID,DeviceDataPtr);
return ((LDD_TDeviceData*)DeviceDataPtr); /* Return pointer to the data data structure */
}
PORTE->PCR[DAC_POS] |= PORT_PCR_MUX(0); // Select analog
// Disable buffer mode
DAC0->C1 = 0;
DAC0->C2 = 0;
// Enable DAC, select VDDA as reference voltage
DAC0->C0 = MASK(DAC_C0_DACEN_SHIFT) | MASK(DAC_C0_DACRFS_SHIFT);
}
/*
Code for driving DAC
*/
void Play_Sound_Sample(uint16_t val) {
DAC0->DAT[0].DATH = DAC_DATH_DATA1(val >> 8);
DAC0->DAT[0].DATL = DAC_DATL_DATA0(val);
}
void SineTable_Init(void) {
unsigned n;
for (n=0; n<NUM_STEPS; n++) {
SineTable[n] = (MAX_DAC_CODE/2)*(1+sinf(n*(2*3.1415927/NUM_STEPS)));
}
}
void Init_Waveform(void) {
uint32_t i;
for (i=0; i<NUM_WAVEFORM_SAMPLES; i++) {
Waveform[i] = (MAX_DAC_CODE/2)*
