// function to configure SPI module for STANDARD MASTER mode
void ConfigureMasterSPI(){
// clear SPIEN
SPI1STATbits.SPIEN=0;
// if using interrupts
IFS0bits.SPI1IF = 0; // clear the interrupt flag
IEC0bits.SPI1IE = 0; // enable interrupt
// IPC2bits.SPI1IP = 111; // set the interrupt priority
// write the desired settings to SPI1CON1 and SPI1CON2 (MSTEN = 1 for master)
SPI1CON1bits.DISSCK = 0; // disable SCK1 pin bit (SPI Master modes only)[enabled]
SPI1CON1bits.DISSDO = 0; // disables SDO1 pin bit[controlled by module]
SPI1CON1bits.MODE16 = 0; // word/byte communication select bit[byte wide]
SPI1CON1bits.SMP = 0; // SPI1 data input sample phase bit[middle]
SPI1CON1bits.CKE = 0; // SPI1 clock edge select bit
SPI1CON1bits.SSEN = 1; // slave select enable bit (slave mode)
SPI1CON1bits.CKP = 0; // clock polarity set bit[idle high]
InitSPIMaster();
SPI1CON1bits.MSTEN = 1; // master mode enable bit
SPI1CON1bits.SPRE = 0b000; // secondary prescale bits (master mode)[8:1]
SPI1CON1bits.PPRE = 0b00; // primary prescale bits (master mode)[64:1]
SPI1CON2bits.FRMEN = 0; // frame SPI1 support bit[disabled]
SPI1CON2bits.SPIFSD = 0; // frame sync pulse direction control on SS1 pin bit
SPI1CON2bits.SPIFPOL = 0; // frame sync pulse polarity bit (frame mode only)
SPI1CON2bits.SPIFE = 0; // frame sync pulse edge select bit
SPI1CON2bits.SPIBEN = 0; // enhanced buffer enable bit
// clear the SPIROV bit
SPI1STATbits.SPIROV = 0; // recieve overflow flag bit
// enable SPI operation by setting the SPIEN bit
SPI1STATbits.SPIEN = 1; // SPI1 enable bit
// write the data to be transmitted to the SPI1BUF register.
// transmission (and reception) will start as soon as data is written to the SPI1BUF register.
}
//Read a register from the memory
static int _F9_Handler (void)
{
uint8_t RegToRead = argAsInt(1);
uint8_t BufferNumber = argAsInt(2);
uint16_t Addr = argAsInt(3);
uint8_t DataBuffer[10];
if(RegToRead == 1)
{
AT45DB321D_Select();
}
else if(RegToRead == 0)
{
AT45DB321D_Deselect();
}
else if(RegToRead == 2) //Read status
{
//SPI_Init(SPI_SPEED_FCPU_DIV_2 | SPI_ORDER_MSB_FIRST | SPI_SCK_LEAD_FALLING | SPI_SAMPLE_TRAILING | SPI_MODE_MASTER);
InitSPIMaster(0,0); //Mode 0,0 is good
printf_P(PSTR("Stat: 0x%02X\n"), AT45DB321D_ReadStatus());
}
else if(RegToRead == 3) //Read IDs
{
//SPI_Init(SPI_SPEED_FCPU_DIV_2 | SPI_ORDER_MSB_FIRST | SPI_SCK_LEAD_FALLING | SPI_SAMPLE_TRAILING | SPI_MODE_MASTER);
InitSPIMaster(0,0); //Mode 0,0 is good
AT45DB321D_Select();
SPISendByte(AT45DB321D_CMD_READ_DEVICE_ID);
printf_P(PSTR("ID[1]: 0x%02X\n"), SPISendByte(0x00));
printf_P(PSTR("ID[2]: 0x%02X\n"), SPISendByte(0x00));
printf_P(PSTR("ID[3]: 0x%02X\n"), SPISendByte(0x00));
printf_P(PSTR("ID[4]: 0x%02X\n"), SPISendByte(0x00));
AT45DB321D_Deselect();
}
else if(RegToRead == 4) //Read bytes from buffer
{
printf_P(PSTR("Reading 5 bytes from buffer %u at address 0x%04X\n"), BufferNumber, Addr);
AT45DB321D_BufferRead(BufferNumber, Addr, DataBuffer, 5);
printf_P(PSTR("0: 0x%02X\n"), DataBuffer[0]);
printf_P(PSTR("1: 0x%02X\n"), DataBuffer[1]);
printf_P(PSTR("2: 0x%02X\n"), DataBuffer[2]);
printf_P(PSTR("3: 0x%02X\n"), DataBuffer[3]);
printf_P(PSTR("4: 0x%02X\n"), DataBuffer[4]);
}
else if(RegToRead == 5) //write bytes to buffer
{
printf_P(PSTR("writing 5 bytes to buffer %u at address 0x%04X\n"), BufferNumber, Addr);
DataBuffer[0] = 0xAE;
DataBuffer[1] = 0x14;
DataBuffer[2] = 0x9A;
DataBuffer[3] = 0x22;
DataBuffer[4] = 0x17;
AT45DB321D_BufferWrite(BufferNumber, Addr, DataBuffer, 5);
}
else if(RegToRead == 6) //Copy page to buffer
{
printf_P(PSTR("Copy page 0x%04X to buffer %u\n"), Addr, BufferNumber);
AT45DB321D_CopyPageToBuffer(BufferNumber, Addr);
printf_P(PSTR("Stat: 0x%02X\n"), AT45DB321D_WaitForReady());
}
else if(RegToRead == 7) //Copy buffer to page
{
printf_P(PSTR("Copy buffer %u to page 0x%04X\n"), BufferNumber, Addr);
AT45DB321D_CopyBufferToPage(BufferNumber, Addr);
printf_P(PSTR("Stat: 0x%02X\n"), AT45DB321D_WaitForReady());
}
else if(RegToRead == 8) //Erase page
{
printf_P(PSTR("Erase page 0x%04X\n"), Addr);
AT45DB321D_ErasePage(Addr);
printf_P(PSTR("Stat: 0x%02X\n"), AT45DB321D_WaitForReady());
}
else if(RegToRead == 9) //init datalogger
{
Datalogger_Init(DATALOGGER_INIT_APPEND | DATALOGGER_INIT_RESTART_IF_FULL);
}
else if (RegToRead == 10)
{
Datalogger_AddDataSet(DataBuffer);
}
else if (RegToRead == 11)
{
Datalogger_SaveDataToFlash();
}
else if (RegToRead == 12)
{
Datalogger_ReadBackData(5);
}
return 0;
}
