Difference between revisions of "Component: One Wire (DS2482) (Comms: Interface)"
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Revision as of 13:29, 17 November 2021
| Author | MatrixTSL |
| Version | 1.0 |
| Category | Comms: Interface |
Contents
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.
Detailed description
No detailed description exists yet for this component
Examples
No additional examples
Downloadable macro reference
|
ReceiveByte |
| Receives a byte from the one wire bus a bit at a time | |
 - BYTE
|
Return |
|
|
TransmitByte |
| Transmit a byte to the one wire bus a bit at a time | |
| - BYTE
|
Command |
 - VOID
|
Return |
|
|
SkipROM |
| Performs a bus reset and the sends the SkipROM command byte | |
| - VOID
|
Return |
|
|
BusReset |
| 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 | |
 - BOOL
|
Return |
|
|
MatchROM |
| Performs a reset followed by the MatchROM code and then the 8-bit ROM code. | |
| - BYTE
|
FamilyCode |
| - BYTE
|
SerialNumber |
| - VOID
|
Return |
|
|
ScanBus |
| Scans the one wire bus to detect all connected devices. Returns the number of one wire devices found. | |
| - BYTE
|
Return |
|
|
GetDeviceCount |
| Returns the number of devices found by the last ScanBus operation. | |
| - BYTE
|
Return |
|
|
GetIDByte |
| Returns byte ectet of the 64-Bit lasered ROM code, 255 on error | |
| - BYTE
|
Device |
| Device ID - Range: 0 - NumDevices - 1 | |
| - BYTE
|
ByteIndex |
| Index of the data byte. 0=FamilyCode, 1-6=Serial, 7=CRC | |
| - BYTE
|
Return |
|
|
Initialise |
| - VOID
|
Return |
Property reference
|
Properties |
|
Max Devices |
| 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 | |
|
Device Address |
|
Stop Delay |
| On older microcontroller devices there is a potential for the I2C hardware channel to lock up if there is not a 10ms delay between an I2C stop event and the next I2C start event. Most modern microcontrollers will not have a problem so this property can be disabled to speed up the I2C communications. | |
|
|
Baud Select |
| Baud rate option selector | |
|
Baud Rate |
| Baud rate to be used | |
|
|
Scope Traces |
| Selects if the component pin connections are automatically generated on the data recorder window or not. Yes: Automatically add the component pins to a group on the data recorder which will reflect the sim data during simultion. No: Do not show the pin signals on the data recorder window. | |
|
|
Console Data |
| Selects if the console data is automatically generated or not | |
|
|
API |
| Specifies the injector component on the panel to interact with to provide comms simulation. | |
|
Connections |
|
|
Channel |
| Channel selection | |
|
SDA |
| Pin used for SDA (data signal) | |
|
|
SCL |
| Pin used for SCL (clock signal) | |
|
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Simulations |
|
|
Simulate Comms |
