Subversion Repositories opb_onewire

 void OneWireReset (void) {

        volatile int x;

        // Reset the 1-wire bus

        WriteREG (XPAR_S3E_ONEWIRE_MASTER_0_BASEADDR,USER,0x8,0x3);             // Send the opcode for a bus reset

        WriteREG (XPAR_S3E_ONEWIRE_MASTER_0_BASEADDR,USER,0xC,0x1);             // Execute!

        // Wait a little while...

        x=0;

        while (x < 25000) {

                x++;

        }

 }

 void OneWireWrite (unsigned char data) {

        volatile int x;

        volatile unsigned char ReadBUF;

        // Send skip ROM command

        WriteREG (XPAR_S3E_ONEWIRE_MASTER_0_BASEADDR,USER,0x8,0x1);             // Send the opcode for a write

        WriteREG (XPAR_S3E_ONEWIRE_MASTER_0_BASEADDR,USER,0x4,data);            // Send the data for a write

        WriteREG (XPAR_S3E_ONEWIRE_MASTER_0_BASEADDR,USER,0xC,0x1);             // Execute!

        // Wait a little while...

        x=0;

        while (x < 5000) {

                x++;

        }

 }

 unsigned char OneWireRead (void) {

        volatile int x;

        volatile unsigned char ReadBUF;

        // Read a byte

        WriteREG (XPAR_S3E_ONEWIRE_MASTER_0_BASEADDR,USER,0x8,0x2);             // Send the opcode for a read

        WriteREG (XPAR_S3E_ONEWIRE_MASTER_0_BASEADDR,USER,0xC,0x1);             // Execute!

        // Wait a little while...

        x=0;

        while (x < 5000) {

                x++;

        }

        ReadBUF = ReadREG(XPAR_S3E_ONEWIRE_MASTER_0_BASEADDR,USER,0x0); // Read the data

        return ReadBUF;

 }