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;
 }