// 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
}
//<editor-fold defaultstate="collapsed" desc="SPI Setup">
void Setup_SPI1()
{
OpenSPI1(
(
ENABLE_SCK_PIN &//
// FIFO_BUFFER_DISABLE &
ENABLE_SDO_PIN &//
SPI_MODE16_OFF &//
SPI_SMP_ON &//
SPI_CKE_ON &//
SLAVE_ENABLE_OFF &//
CLK_POL_ACTIVE_HIGH &//
MASTER_ENABLE_ON &//
SEC_PRESCAL_4_1 &//
PRI_PRESCAL_4_1//
)
,
(
FRAME_ENABLE_OFF & //NOT USED
FRAME_SYNC_OUTPUT & //NOT USED
FRAME_POL_ACTIVE_HIGH & //NOT USED
FRAME_SYNC_EDGE_PRECEDE //NOT USED
)
,
(
SPI_ENABLE &//
SPI_IDLE_CON &//
SPI_RX_OVFLOW_CLR //
)
);
ConfigIntSPI1(SPI_INT_EN & SPI_INT_PRI_5);
TRIS_SCLK;
TRIS_MOSI;
TRIS_MISO;
MAP_SCLK;
MAP_MOSI;
MAP_MISO;
printf("SPI1 Setup\r\n");
return;
}
void Setup_SPI1()
{
OpenSPI1(
(
ENABLE_SCK_PIN &//
// FIFO_BUFFER_DISABLE &
ENABLE_SDO_PIN &//
SPI_MODE16_OFF &//
SPI_SMP_ON &//
SPI_CKE_ON &//
SLAVE_ENABLE_OFF &//
CLK_POL_ACTIVE_HIGH &//
MASTER_ENABLE_ON &//
SEC_PRESCAL_4_1 &//
PRI_PRESCAL_4_1//
)
,
(
FRAME_ENABLE_OFF & //NOT USED
FRAME_SYNC_OUTPUT & //NOT USED
FRAME_POL_ACTIVE_HIGH & //NOT USED
FRAME_SYNC_EDGE_PRECEDE //NOT USED
)
,
(
SPI_ENABLE &//
SPI_IDLE_CON &//
SPI_RX_OVFLOW_CLR //
)
);
ConfigIntSPI1(SPI_INT_EN & SPI_INT_PRI_5);
PPSOutput(OUT_FN_PPS_SCK1, OUT_PIN_PPS_RP8);//CLK
PPSOutput(OUT_FN_PPS_SDO1, OUT_PIN_PPS_RP7);//MOSI
PPSInput(IN_FN_PPS_SDI1, IN_PIN_PPS_RP6); //MISO
TRISBbits.TRISB8 = 0;//Clk
TRISBbits.TRISB7 = 0;//MOSI
TRISBbits.TRISB6 = 1;//MISO
printf("SPI1 Setup\r\n");
return;
}
