| Line No. | Rev | Author | Line |
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| 1 | 6 | kaklik | /*! \file ds2482.h \brief Dallas DS2482 I2C-to-Dallas1Wire Master Library. */ |
| 2 | //***************************************************************************** |
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| 3 | // |
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| 4 | // File Name : 'ds2482.h' |
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| 5 | // Title : Dallas DS2482 I2C-to-Dallas1Wire Master Library |
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| 6 | // Author : Pascal Stang - Copyright (C) 2004 |
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| 7 | // Created : 2004.09.27 |
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| 8 | // Revised : 2004.09.27 |
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| 9 | // Version : 0.1 |
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| 10 | // Target MCU : Atmel AVR Series |
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| 11 | // Editor Tabs : 4 |
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| 12 | // |
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| 13 | // NOTE: This code is currently below version 1.0, and therefore is considered |
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| 14 | // to be lacking in some functionality or documentation, or may not be fully |
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| 15 | // tested. Nonetheless, you can expect most functions to work. |
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| 16 | // |
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| 17 | // This code is distributed under the GNU Public License |
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| 18 | // which can be found at http://www.gnu.org/licenses/gpl.txt |
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| 19 | // |
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| 20 | //***************************************************************************** |
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| 21 | |||
| 22 | #ifndef DS2482_H |
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| 23 | #define DS2482_H |
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| 24 | |||
| 25 | #include "global.h" |
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| 26 | |||
| 27 | // constants/macros/typdefs |
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| 28 | #define DS2482_I2C_ADDR 0x30 //< Base I2C address of DS2482 devices |
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| 29 | |||
| 30 | // DS2482 command defines |
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| 31 | #define DS2482_CMD_DRST 0xF0 //< DS2482 Device Reset |
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| 32 | #define DS2482_CMD_WCFG 0xD2 //< DS2482 Write Configuration |
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| 33 | #define DS2482_CMD_CHSL 0xC3 //< DS2482 Channel Select |
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| 34 | #define DS2482_CMD_SRP 0xE1 //< DS2482 Set Read Pointer |
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| 35 | #define DS2482_CMD_1WRS 0xB4 //< DS2482 1-Wire Reset |
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| 36 | #define DS2482_CMD_1WWB 0xA5 //< DS2482 1-Wire Write Byte |
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| 37 | #define DS2482_CMD_1WRB 0x96 //< DS2482 1-Wire Read Byte |
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| 38 | #define DS2482_CMD_1WSB 0x87 //< DS2482 1-Wire Single Bit |
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| 39 | #define DS2482_CMD_1WT 0x78 //< DS2482 1-Wire Triplet |
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| 40 | |||
| 41 | // DS2482 status register bit defines |
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| 42 | #define DS2482_STATUS_1WB 0x01 //< DS2482 Status 1-Wire Busy |
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| 43 | #define DS2482_STATUS_PPD 0x02 //< DS2482 Status Presence Pulse Detect |
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| 44 | #define DS2482_STATUS_SD 0x04 //< DS2482 Status Short Detected |
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| 45 | #define DS2482_STATUS_LL 0x08 //< DS2482 Status 1-Wire Logic Level |
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| 46 | #define DS2482_STATUS_RST 0x10 //< DS2482 Status Device Reset |
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| 47 | #define DS2482_STATUS_SBR 0x20 //< DS2482 Status Single Bit Result |
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| 48 | #define DS2482_STATUS_TSB 0x40 //< DS2482 Status Triplet Second Bit |
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| 49 | #define DS2482_STATUS_DIR 0x80 //< DS2482 Status Branch Direction Taken |
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| 50 | |||
| 51 | // DS2482 configuration register bit defines |
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| 52 | #define DS2482_CFG_APU 0x01 //< DS2482 Config Active Pull-Up |
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| 53 | #define DS2482_CFG_PPM 0x02 //< DS2482 Config Presence Pulse Masking |
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| 54 | #define DS2482_CFG_SPU 0x04 //< DS2482 Config Strong Pull-Up |
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| 55 | #define DS2482_CFG_1WS 0x08 //< DS2482 Config 1-Wire Speed |
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| 56 | |||
| 57 | // DS2482 channel selection code defines |
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| 58 | #define DS2482_CH_IO0 0xF0 //< DS2482 Select Channel IO0 |
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| 59 | #define DS2482_CH_IO1 0xE1 //< DS2482 Select Channel IO1 |
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| 60 | #define DS2482_CH_IO2 0xD2 //< DS2482 Select Channel IO2 |
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| 61 | #define DS2482_CH_IO3 0xC3 //< DS2482 Select Channel IO3 |
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| 62 | #define DS2482_CH_IO4 0xB4 //< DS2482 Select Channel IO4 |
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| 63 | #define DS2482_CH_IO5 0xA5 //< DS2482 Select Channel IO5 |
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| 64 | #define DS2482_CH_IO6 0x96 //< DS2482 Select Channel IO6 |
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| 65 | #define DS2482_CH_IO7 0x87 //< DS2482 Select Channel IO7 |
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| 66 | |||
| 67 | // DS2482 read pointer code defines |
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| 68 | #define DS2482_READPTR_SR 0xF0 //< DS2482 Status Register |
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| 69 | #define DS2482_READPTR_RDR 0xE1 //< DS2482 Read Data Register |
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| 70 | #define DS2482_READPTR_CSR 0xD2 //< DS2482 Channel Selection Register |
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| 71 | #define DS2482_READPTR_CR 0xC3 //< DS2482 Configuration Register |
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| 72 | |||
| 73 | // functions |
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| 74 | |||
| 75 | //! Initialize the DS2482 chip |
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| 76 | // returns: |
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| 77 | // 0 if successful |
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| 78 | // non-zero if unsuccessful (chip not present) |
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| 79 | u08 ds2482Init(u08 i2cAddr); |
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| 80 | u08 ds2482Reset(u08 i2cAddr); |
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| 81 | u08 ds2482SendCmd(u08 cmd); |
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| 82 | u08 ds2482SendCmdArg(u08 cmd, u08 arg); |
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| 83 | u08 ds2482BusyWait(void); |
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| 84 | u08 ds2482BusReset(void); |
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| 85 | u08 ds2482BusTransferBit(u08 bit); |
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| 86 | u08 ds2482BusTriplet(u08 dir); |
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| 87 | u08 ds2482BusLevel(void); |
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| 88 | void ds2482BusWriteByte(u08 data); |
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| 89 | u08 ds2482BusReadByte(void); |
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| 90 | |||
| 91 | #endif |
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