// Set up the SPI for the MicroSD card
void sdSetup(void)
{
// Configure Port Direction
TRISDbits.TRISD5 = 0; // Turn RD5 into output for SCLK
TRISDbits.TRISD4 = 1; // Turn RD4 into input for MISO
TRISDbits.TRISD3 = 0; // Turn RD3 into output for MOSI
TRISDbits.TRISD2 = 0; // Turn RD2 into output for SS
TRISDbits.TRISD1 = 1; // Turn RD1 into input for CD (card detect)
// Configure PPS pins for MicroSD
iPPSInput(IN_FN_PPS_SDI1,IN_PIN_PPS_RP25); // Assign SDI1 to pin RP25
iPPSOutput(OUT_PIN_PPS_RP20,OUT_FN_PPS_SCK1OUT); // Assign SCK1OUT to pin RP20
iPPSOutput(OUT_PIN_PPS_RP22,OUT_FN_PPS_SDO1); // Assign SDO1 to pin RP22
iPPSOutput(OUT_PIN_PPS_RP23,OUT_FN_PPS_SS1OUT); // Assign SS1OUT to pin RP23
// Close SPI in case it's already open
CloseSPI1();
// Enable SPI interface
// Clear and disable SPI interupts for now
SPI1_Clear_Intr_Status_Bit;
DisableIntSPI1;
ConfigIntSPI1(SPI_INT_DIS);
// Interrupts disabled
OpenSPI1(0x0000, MASTER_ENABLE_ON, SPI_ENABLE);
// Master Mode
// SPI enabled
}
static void initSPI_OSD(uint16_t priPre, uint16_t secPre)
{
uint16_t SPICON1Value = 0, SPICON2Value = 0;
uint16_t SPISTATValue = 0;
#if defined(__dsPIC33E__)
SPICON1Value =
ENABLE_SDO_PIN & SPI_MODE16_OFF & ENABLE_SCK_PIN &
SPI_SMP_OFF & SPI_CKE_ON &
SLAVE_ENABLE_OFF &
CLK_POL_ACTIVE_HIGH &
MASTER_ENABLE_ON &
secPre & priPre;
// SPICON2Value = FRAME_ENABLE_OFF & FRAME_SYNC_OUTPUT; // & FIFO_BUFFER_DISABLE;
// SPISTATValue = SPI_ENABLE & SPI_IDLE_CON & SPI_RX_OVFLOW_CLR; // & BUF_INT_SEL_5;
SPISTATValue = SPI_ENABLE;
#else
SPICON1Value =
ENABLE_SDO_PIN & SPI_MODE16_OFF & ENABLE_SCK_PIN &
SPI_SMP_ON & SPI_CKE_OFF &
SLAVE_ENABLE_OFF &
CLK_POL_ACTIVE_LOW &
MASTER_ENABLE_ON &
secPre & priPre;
SPICON2Value = FRAME_ENABLE_OFF & FRAME_SYNC_OUTPUT;
SPISTATValue = SPI_ENABLE & SPI_IDLE_CON & SPI_RX_OVFLOW_CLR;
#endif
#if (BOARD_TYPE == UDB4_BOARD || BOARD_TYPE == UDB5_BOARD)
CloseSPI1();
// ConfigIntSPI1(SPI_INT_DIS & SPI_INT_PRI_6);
OpenSPI1(SPICON1Value, SPICON2Value, SPISTATValue);
SPI1STATbits.SPIROV = 0; // clear SPI receive overflow
_SPI1IF = 0; // clear any pending interrupts
// _SPI1IP = INT_PRI_SPI1; // set interrupt priority
// _SPI1IE = 1; // turn on SPI interrupts
#elif (BOARD_TYPE == AUAV3_BOARD)
CloseSPI3();
// ConfigIntSPI3(SPI_INT_DIS & SPI_INT_PRI_6);
OpenSPI3(SPICON1Value, SPICON2Value, SPISTATValue);
SPI3STATbits.SPIROV = 0; // clear SPI receive overflow
_SPI3IF = 0; // clear any pending interrupts
// _SPI3IP = INT_PRI_SPI3; // set interrupt priority
// _SPI3IE = 1; // turn on SPI interrupts
// SPIxSTAT 801C, SPIxCON1 0079, SPIxCON2 0000
#endif
}
