Component: One Wire (DS2482) (Comms: Interface): Difference between revisions
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==Component Source Code== | ==Component Source Code== | ||
Please click here to download the component source project: [https://www.flowcode.co.uk/wiki/componentsource/FC_Comp_Source_One_Wire_DS2482_I2C.fcfx FC_Comp_Source_One_Wire_DS2482_I2C.fcfx] | |||
Please click here to view the component source code (Beta): [https://www.flowcode.co.uk/FlowchartView/?wfile=componentsource/FC_Comp_Source_One_Wire_DS2482_I2C.fcfx FC_Comp_Source_One_Wire_DS2482_I2C.fcfx] | Please click here to view the component source code (Beta): [https://www.flowcode.co.uk/FlowchartView/?wfile=componentsource/FC_Comp_Source_One_Wire_DS2482_I2C.fcfx FC_Comp_Source_One_Wire_DS2482_I2C.fcfx] | ||
==Detailed description== | ==Detailed description== | ||
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==Examples== | ==Examples== | ||
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''<span style="color:red;">No additional examples</span>'' | ''<span style="color:red;">No additional examples</span>'' | ||
==Macro reference== | |||
{| class="wikitable | ===BusReset=== | ||
{| class="mtx-class-macrotable wikitable" | |||
|- | |- | ||
| width="10%" align="center" | | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | ||
| width="90%" | | width="90%" class="mtx-class-macrohead" | '''BusReset''' | ||
|- | |- | ||
| colspan="2" | | | colspan="2" | Issue a 'ping' on the bus. If there is at least one sensor on the bus then it will generate a presence pulse. Returns 0 if a presense pulse was detected Returns 1 no device was detected | ||
|- | |- | ||
|- | |- | ||
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9- | | width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-bool-icon.png]] - BOOL | ||
| width="90%" style="border-top: 2px solid #000;" | ''Return'' | | width="90%" style="border-top: 2px solid #000;" | ''Return'' | ||
|} | |} | ||
{| class="wikitable | ===GetDeviceCount=== | ||
{| class="mtx-class-macrotable wikitable" | |||
|- | |- | ||
| width="10%" align="center" | | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | ||
| width="90%" | | width="90%" class="mtx-class-macrohead" | '''GetDeviceCount''' | ||
|- | |- | ||
| colspan="2" | Returns the number of devices found by the last ScanBus operation. | | colspan="2" | Returns the number of devices found by the last ScanBus operation. | ||
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{| class="wikitable | ===GetIDByte=== | ||
{| class="mtx-class-macrotable wikitable" | |||
|- | |- | ||
| width="10%" align="center" | | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | ||
| width="90%" | | width="90%" class="mtx-class-macrohead" | '''GetIDByte''' | ||
|- | |- | ||
| colspan="2" | Returns byte ectet of the 64-Bit lasered ROM code, 255 on error | | colspan="2" | Returns byte ectet of the 64-Bit lasered ROM code, 255 on error | ||
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{| class="wikitable | ===Initialise=== | ||
{| class="mtx-class-macrotable wikitable" | |||
|- | |- | ||
| width="10%" align="center" | | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | ||
| width="90%" | | width="90%" class="mtx-class-macrohead" | '''Initialise''' | ||
|- | |- | ||
| colspan="2" | | | colspan="2" | | ||
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===MatchROM=== | |||
{| class="mtx-class-macrotable wikitable" | |||
== | |||
{| class="wikitable | |||
|- | |- | ||
| width="10%" align="center" | | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | ||
| width="90%" | | width="90%" class="mtx-class-macrohead" | '''MatchROM''' | ||
|- | |- | ||
| colspan="2" | Performs a reset followed by the MatchROM code and then the 8-bit ROM code. | |||
|- | |- | ||
|- | |- | ||
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE | |||
| width="90%" | FamilyCode | |||
| width="10%" align="center | |||
| width="90%" | | |||
|- | |- | ||
| colspan="2" | | | colspan="2" | | ||
|- | |- | ||
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE | | width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE | ||
| width="90%" | | | width="90%" | SerialNumber | ||
|- | |- | ||
| colspan="2" | | | colspan="2" | | ||
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{| class="wikitable | ===ReceiveByte=== | ||
{| class="mtx-class-macrotable wikitable" | |||
|- | |- | ||
| width="10%" align="center" | | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | ||
| width="90%" | | width="90%" class="mtx-class-macrohead" | '''ReceiveByte''' | ||
|- | |- | ||
| colspan="2" | | | colspan="2" | Receives a byte from the one wire bus a bit at a time | ||
|- | |- | ||
|- | |- | ||
| width="10%" align="center" style="border-top: 2px solid #000; | | width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-u8-icon.png]] - BYTE | ||
| width="90%" style="border-top: 2px solid #000;" | ''Return'' | | width="90%" style="border-top: 2px solid #000;" | ''Return'' | ||
|} | |} | ||
{| class="wikitable | ===ScanBus=== | ||
{| class="mtx-class-macrotable wikitable" | |||
|- | |- | ||
| width="10%" align="center" | | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | ||
| width="90%" | | width="90%" class="mtx-class-macrohead" | '''ScanBus''' | ||
|- | |- | ||
| colspan="2" | Scans the one wire bus to detect all connected devices. Returns the number of one wire devices found. | | colspan="2" | Scans the one wire bus to detect all connected devices. Returns the number of one wire devices found. | ||
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{| class="wikitable | ===SkipROM=== | ||
{| class="mtx-class-macrotable wikitable" | |||
|- | |- | ||
| width="10%" align="center" | | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | ||
| width="90%" | | width="90%" class="mtx-class-macrohead" | '''SkipROM''' | ||
|- | |- | ||
| colspan="2" | | | colspan="2" | Performs a bus reset and the sends the SkipROM command byte | ||
|- | |- | ||
|- | |- | ||
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9- | | width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID | ||
| width="90%" style="border-top: 2px solid #000;" | ''Return'' | | width="90%" style="border-top: 2px solid #000;" | ''Return'' | ||
|} | |} | ||
{| class="wikitable | ===TransmitByte=== | ||
{| class="mtx-class-macrotable wikitable" | |||
|- | |- | ||
| width="10%" align="center" | | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]] | ||
| width="90%" | | width="90%" class="mtx-class-macrohead" | '''TransmitByte''' | ||
|- | |- | ||
| colspan="2" | | | colspan="2" | Transmit a byte to the one wire bus a bit at a time | ||
|- | |- | ||
|- | |- | ||
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE | | width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE | ||
| width="90%" | | | width="90%" | Command | ||
|- | |- | ||
| colspan="2" | | | colspan="2" | | ||
|- | |- | ||
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID | | width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID | ||
| width="90%" style="border-top: 2px solid #000;" | ''Return'' | | width="90%" style="border-top: 2px solid #000;" | ''Return'' | ||
|} | |} | ||
==Property reference== | ==Property reference== | ||
{| class="wikitable | {| class="mtx-class-macrotable wikitable" | ||
|- | |- | ||
| width="10%" align="center" | | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-prop-icon.png]] | ||
| width="90%" | | width="90%" class="mtx-class-macrohead" | '''Properties''' | ||
|- | |- | ||
|- | |- | ||
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| colspan="2" | Controls the maximum number of devices that can be detected during a ScanBus. For each additional device we require 8 bytes to store the ROM ID. Default: 8 = 64 Bytes of RAM | | colspan="2" | Controls the maximum number of devices that can be detected during a ScanBus. For each additional device we require 8 bytes to store the ROM ID. Default: 8 = 64 Bytes of RAM | ||
|- | |- | ||
| width="10%" align="center" | | width="10%" align="center" class="mtx-class-propfolder" | [[File:Fc9-conn-icon.png]] | ||
| width="90%" | | width="90%" class="mtx-class-propfolder" | I2C Properties | ||
|- | |- | ||
|- | |- | ||
| Line 417: | Line 234: | ||
| colspan="2" | | | colspan="2" | | ||
|- | |- | ||
| width="10%" align="center" | | width="10%" align="center" class="mtx-class-propfolder" | [[File:Fc9-conn-icon.png]] | ||
| width="90%" | | width="90%" class="mtx-class-propfolder" | Connections | ||
|- | |- | ||
|- | |- | ||
| Line 436: | Line 253: | ||
| colspan="2" | Pin used for SCL (clock signal) | | colspan="2" | Pin used for SCL (clock signal) | ||
|- | |- | ||
| width="10%" align="center" | | width="10%" align="center" class="mtx-class-propfolder" | [[File:Fc9-conn-icon.png]] | ||
| width="90%" | | width="90%" class="mtx-class-propfolder" | Options | ||
|- | |- | ||
|- | |- | ||
| Line 455: | Line 272: | ||
| colspan="2" | Baud rate to be used | | colspan="2" | Baud rate to be used | ||
|- | |- | ||
| width="10%" align="center" | | width="10%" align="center" class="mtx-class-propfolder" | [[File:Fc9-conn-icon.png]] | ||
| width="90%" | | width="90%" class="mtx-class-propfolder" | Simulation | ||
|- | |- | ||
|- | |- | ||
Latest revision as of 14:36, 13 July 2026
| Author | MatrixTSL |
| Version | 1.0 |
| Category | Comms: Interface |
One Wire (DS2482) component
A One Wire master transciever controlled using I2C comms. Useful for microcontroller devices where One Wire communications timings are too tight to do reliably.
Component Source Code
Please click here to download the component source project: FC_Comp_Source_One_Wire_DS2482_I2C.fcfx
Please click here to view the component source code (Beta): FC_Comp_Source_One_Wire_DS2482_I2C.fcfx
Detailed description
No detailed description exists yet for this component
Examples
No additional examples
Macro reference
BusReset
GetDeviceCount
| GetDeviceCount | |
| Returns the number of devices found by the last ScanBus operation. | |
| Return | |
GetIDByte
Initialise
| Initialise | |
| Return | |
MatchROM
| MatchROM | |
| Performs a reset followed by the MatchROM code and then the 8-bit ROM code. | |
| FamilyCode | |
| SerialNumber | |
| Return | |
ReceiveByte
| ReceiveByte | |
| Receives a byte from the one wire bus a bit at a time | |
| Return | |
ScanBus
| ScanBus | |
| Scans the one wire bus to detect all connected devices. Returns the number of one wire devices found. | |
| Return | |
SkipROM
| SkipROM | |
| Performs a bus reset and the sends the SkipROM command byte | |
| Return | |
TransmitByte
| TransmitByte | |
| Transmit a byte to the one wire bus a bit at a time | |
| Command | |
| Return | |