ds2480.h

sdcc是为51等小型嵌入式cpu设计的c语言编译器支持数种不同类型的cpu

//---------------------------------------------------------------------------
// Copyright (C) 2000 Dallas Semiconductor Corporation, All Rights Reserved.
// 
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// to deal in the Software without restriction, including without limitation 
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// and/or sell copies of the Software, and to permit persons to whom the 
// Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included 
// in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 
// MERCHANTABILITY,  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
// IN NO EVENT SHALL DALLAS SEMICONDUCTOR BE LIABLE FOR ANY CLAIM, DAMAGES 
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 
// OTHER DEALINGS IN THE SOFTWARE.
// 
// Except as contained in this notice, the name of Dallas Semiconductor 
// shall not be used except as stated in the Dallas Semiconductor 
// Branding Policy. 
//---------------------------------------------------------------------------
//
//  DS2480.H - This file contains the DS2480 constants
//
//  Version: 2.00
//
//  History: 1.02 -> 1.03 Make sure uchar is not defined twice.
//           
//

// Mode Commands
#define MODE_DATA                      0xE1
#define MODE_COMMAND                   0xE3
#define MODE_STOP_PULSE                0xF1

// Return byte value 
#define RB_CHIPID_MASK                 0x1C
#define RB_RESET_MASK                  0x03
#define RB_1WIRESHORT                  0x00
#define RB_PRESENCE                    0x01
#define RB_ALARMPRESENCE               0x02 
#define RB_NOPRESENCE                  0x03

#define RB_BIT_MASK                    0x03
#define RB_BIT_ONE                     0x03
#define RB_BIT_ZERO                    0x00

// Masks for all bit ranges 
#define CMD_MASK                       0x80
#define FUNCTSEL_MASK                  0x60
#define BITPOL_MASK                    0x10
#define SPEEDSEL_MASK                  0x0C
#define MODSEL_MASK                    0x02
#define PARMSEL_MASK                   0x70
#define PARMSET_MASK                   0x0E

// Command or config bit 
#define CMD_COMM                       0x81
#define CMD_CONFIG                     0x01

// Function select bits 
#define FUNCTSEL_BIT                   0x00
#define FUNCTSEL_SEARCHON              0x30
#define FUNCTSEL_SEARCHOFF             0x20
#define FUNCTSEL_RESET                 0x40
#define FUNCTSEL_CHMOD                 0x60

// Bit polarity/Pulse voltage bits 
#define BITPOL_ONE                     0x10
#define BITPOL_ZERO                    0x00
#define BITPOL_5V                      0x00
#define BITPOL_12V                     0x10

// One Wire speed bits 
#define SPEEDSEL_STD                   0x00
#define SPEEDSEL_FLEX                  0x04
#define SPEEDSEL_OD                    0x08
#define SPEEDSEL_PULSE                 0x0C

// Data/Command mode select bits 
#define MODSEL_DATA                    0x00
#define MODSEL_COMMAND                 0x02

// 5V Follow Pulse select bits (If 5V pulse
// will be following the next byte or bit.) 
#define PRIME5V_TRUE                   0x02
#define PRIME5V_FALSE                  0x00

// Parameter select bits 
#define PARMSEL_PARMREAD               0x00
#define PARMSEL_SLEW                   0x10
#define PARMSEL_12VPULSE               0x20
#define PARMSEL_5VPULSE                0x30
#define PARMSEL_WRITE1LOW              0x40
#define PARMSEL_SAMPLEOFFSET           0x50
#define PARMSEL_ACTIVEPULLUPTIME       0x60
#define PARMSEL_BAUDRATE               0x70

// Pull down slew rate. 
#define PARMSET_Slew15Vus              0x00
#define PARMSET_Slew2p2Vus             0x02
#define PARMSET_Slew1p65Vus            0x04
#define PARMSET_Slew1p37Vus            0x06
#define PARMSET_Slew1p1Vus             0x08
#define PARMSET_Slew0p83Vus            0x0A
#define PARMSET_Slew0p7Vus             0x0C
#define PARMSET_Slew0p55Vus            0x0E

// 12V programming pulse time table 
#define PARMSET_32us                   0x00
#define PARMSET_64us                   0x02
#define PARMSET_128us                  0x04
#define PARMSET_256us                  0x06
#define PARMSET_512us                  0x08
#define PARMSET_1024us                 0x0A
#define PARMSET_2048us                 0x0C
#define PARMSET_infinite               0x0E

// 5V strong pull up pulse time table 
#define PARMSET_16p4ms                 0x00
#define PARMSET_65p5ms                 0x02
#define PARMSET_131ms                  0x04
#define PARMSET_262ms                  0x06
#define PARMSET_524ms                  0x08
#define PARMSET_1p05s                  0x0A
#define PARMSET_2p10s                  0x0C
#define PARMSET_infinite               0x0E

// Write 1 low time 
#define PARMSET_Write8us               0x00
#define PARMSET_Write9us               0x02
#define PARMSET_Write10us              0x04
#define PARMSET_Write11us              0x06
#define PARMSET_Write12us              0x08
#define PARMSET_Write13us              0x0A
#define PARMSET_Write14us              0x0C
#define PARMSET_Write15us              0x0E

// Data sample offset and Write 0 recovery time
#define PARMSET_SampOff3us             0x00
#define PARMSET_SampOff4us             0x02
#define PARMSET_SampOff5us             0x04
#define PARMSET_SampOff6us             0x06
#define PARMSET_SampOff7us             0x08
#define PARMSET_SampOff8us             0x0A
#define PARMSET_SampOff9us             0x0C
#define PARMSET_SampOff10us            0x0E

// Active pull up on time 
#define PARMSET_PullUp0p0us            0x00
#define PARMSET_PullUp0p5us            0x02
#define PARMSET_PullUp1p0us            0x04
#define PARMSET_PullUp1p5us            0x06
#define PARMSET_PullUp2p0us            0x08
#define PARMSET_PullUp2p5us            0x0A
#define PARMSET_PullUp3p0us            0x0C
#define PARMSET_PullUp3p5us            0x0E
 
// Baud rate bits 
#define PARMSET_9600                   0x00
#define PARMSET_19200                  0x02
#define PARMSET_57600                  0x04
#define PARMSET_115200                 0x06

// DS2480 program voltage available
#define DS2480PROG_MASK                0x20

// mode bit flags
#define MODE_NORMAL                    0x00
#define MODE_OVERDRIVE                 0x01
#define MODE_STRONG5                   0x02
#define MODE_PROGRAM                   0x04
#define MODE_BREAK                     0x08

extern int DS2480Detect(int);
extern int DS2480ChangeBaud(int, uchar);

// global DS2480 state
extern int ULevel[MAX_PORTNUM]; // current DS2480 1-Wire Net level
extern int UBaud[MAX_PORTNUM];  // current DS2480 baud rate
extern int UMode[MAX_PORTNUM];  // current DS2480 command or data mode state
extern int USpeed[MAX_PORTNUM]; // current DS2480 1-Wire Net comm speed