Implementation of 1-Wire with added Alarm Search Functionality
Dependents: Max32630_One_Wire_Interface
RomIterator.h
- Committer:
- IanBenzMaxim
- Date:
- 2016-05-16
- Revision:
- 77:529edb329ee0
- Child:
- 78:0cbbac7f2016
File content as of revision 77:529edb329ee0:
#ifndef OneWire_RomIterator #define OneWire_RomIterator #include <stdint.h> #include "Masters/OneWireMaster.h" namespace OneWire { /// Controls selection of 1-Wire devices on the bus through ROM commands. class RomIterator { private: OneWireMaster & owMaster; public: /// @param master 1-Wire master to use to issue ROM commands. RomIterator(OneWireMaster & master) : owMaster(master) { } virtual ~RomIterator() { } /// The 1-Wire master used to issue ROM commands. OneWireMaster & master() const { return owMaster; } }; /// Iterates through all 1-Wire devices in a sequential first to last order. class ForwardRomIterator : public RomIterator { public: /// @param master 1-Wire master to use to issue ROM commands. ForwardRomIterator(OneWireMaster & master) : RomIterator(master) { } /// Indicates that current device is the last. virtual bool lastDevice() const = 0; /// Select the first device in the sequence. virtual OneWireMaster::CmdResult selectFirstDevice() = 0; /// Select the next device in the sequence. virtual OneWireMaster::CmdResult selectNextDevice() = 0; /// Reselect the current device for an additional operation. virtual OneWireMaster::CmdResult reselectCurrentDevice() = 0; }; /// Iterates through all 1-Wire devices sequentially using the search procedure. class ForwardSearchRomIterator : public ForwardRomIterator { protected: OneWireMaster::SearchState searchState; public: /// @param master 1-Wire master to use to issue ROM commands. ForwardSearchRomIterator(OneWireMaster & master) : ForwardRomIterator(master) { } /// ROM ID of the currently selected device. const RomId & selectedDevice() const { return searchState.romId; } virtual bool lastDevice() const; virtual OneWireMaster::CmdResult selectFirstDevice(); virtual OneWireMaster::CmdResult selectNextDevice(); virtual OneWireMaster::CmdResult reselectCurrentDevice(); /// Select the first device in the sequence beginning with the given family. /// @param familyCode Family code to select. OneWireMaster::CmdResult selectFirstDeviceInFamily(uint8_t familyCode); /// Select the first device in the next sequential family skipping all remaining devices /// in the current family. OneWireMaster::CmdResult selectNextFamilyDevice(); }; /// Iterates though 1-Wire devices on the bus using random selection by ROM ID. class RandomAccessRomIterator : public RomIterator { public: /// @param master 1-Wire master to use to issue ROM commands. RandomAccessRomIterator(OneWireMaster & master) : RomIterator(master) { } /// Select the device with the given ROM ID. virtual OneWireMaster::CmdResult selectDevice(const RomId & romId) = 0; }; /// Iterator for a singledrop 1-Wire bus. class SingledropRomIterator : public RandomAccessRomIterator { public: /// @param master 1-Wire master to use to issue ROM commands. SingledropRomIterator(OneWireMaster & master) : RandomAccessRomIterator(master) { } /// Select the one and only device. OneWireMaster::CmdResult selectDevice() { return master().OWSkipRom(); } virtual OneWireMaster::CmdResult selectDevice(const RomId & romId); }; /// Iterator for a multidrop 1-Wire bus. class MultidropRomIterator : public RandomAccessRomIterator { protected: RomId lastRom; public: /// @param master 1-Wire master to use to issue ROM commands. MultidropRomIterator(OneWireMaster & master) : RandomAccessRomIterator(master) { } virtual OneWireMaster::CmdResult selectDevice(const RomId & romId); }; } #endif