AnalogX: Difference between revisions
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The CAN bus API provides the configuration and control interface for AnalogX | The CAN bus API provides the configuration and control interface for AnalogX | ||
==CAN base ID== | |||
CAN base ID is '''0xE4600 (935424)''' | CAN base ID is '''0xE4600 (935424)''' | ||
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500K is enabled by default; cut the jumper labeled '''BAUD''' on the bottom of AnalogX to enable 1MB rate. | 500K is enabled by default; cut the jumper labeled '''BAUD''' on the bottom of AnalogX to enable 1MB rate. | ||
==CAN Messages== | |||
===Announcement=== | ===Announcement=== | ||
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Configures options for AnalogX. | Configures options for AnalogX. | ||
Send this message to AnalogX to configure runtime settings. | Send this message to AnalogX to configure runtime settings. | ||
* '''Note:''' Settings are volatile and will need to be set every power cycle. | |||
====Address==== | ====Address==== | ||
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| Reserved | | Reserved | ||
| | | | ||
|} | |||
===Statistics=== | |||
Broadcast by AnalogX every 1 second. | |||
====Address==== | |||
'''CAN ID:''' Base + 2 | |||
{| class="wikitable" | width="600px" | |||
|- | |||
! Offset | |||
! What | |||
! Value | |||
|- | |||
| 0 | |||
| Current Sample Rate | |||
| 1 - 255Hz | |||
|- | |||
| 1 | |||
| Reserved | |||
| | |||
|- | |||
| 2 | |||
| Reserved | |||
| | |||
|- | |||
| 3 | |||
| Reserved | |||
| | |||
|- | |||
| 4 | |||
| Reserved | |||
| | |||
|- | |||
| 5 | |||
| Major Version | |||
| Firmware Major Version Number | |||
|- | |||
| 6 | |||
| Minor Version | |||
| Firmware Minor Version Number | |||
|- | |||
| 7 | |||
| Patch Version | |||
| Firmware Patch version number | |||
|} | |} | ||
Revision as of 21:19, 26 July 2017
AnalogX CAN bus API
Overview
The CAN bus API provides the configuration and control interface for AnalogX
CAN base ID
CAN base ID is 0xE4600 (935424)
Adjusting Base ID
The base address is determined by the state of the ADR1 and ADR2 jumpers. By default, the jumpers are closed (bridged); the jumper can be opened by cutting the trace between the pads. To re-close the jumper, add a small amount of solder to bridge the gap between the pads you want to close.
- Opening the jumper ADR1 will add 256 to the base ID
- Opening the jumper ADR2 will add 512 to the base ID.
The combination of jumper settings will allow up to 4 AnalogX units to coexist on the same CAN bus.
| ADR2 Jumper | ADR1 Jumper | Address |
|---|---|---|
| Closed | Closed | 0xE4600 (935424) |
| Closed | Open | 0xE4700 (935680) |
| Open | Closed | 0xE4800 (935936) |
| Open | Open | 0xE4900 (936192) |
CAN Baud rate
500K and 1MB rates are supported.
500K is enabled by default; cut the jumper labeled BAUD on the bottom of AnalogX to enable 1MB rate.
CAN Messages
Announcement
Broadcast by the device upon power up
Address
CAN ID: Base + 0
| Offset | What | Value |
|---|---|---|
| 0 | Channel Count | Total number of channels on device |
| 1 | Reserved | |
| 2 | Reserved | |
| 3 | Reserved | |
| 4 | Reserved | |
| 5 | Major Version | Firmware Major Version Number |
| 6 | Minor Version | Firmware Minor Version Number |
| 7 | Patch Version | Firmware Patch version number |
Configuration Group 1
Configures options for AnalogX.
Send this message to AnalogX to configure runtime settings.
- Note: Settings are volatile and will need to be set every power cycle.
Address
CAN ID: Base + 3
| Offset | What | Value |
|---|---|---|
| 0 | Sample Rate | Rate to report sensor values ( 1 - 255Hz). Default sample rate is 50Hz. |
| 1 | Reserved | |
| 2 | Reserved | |
| 3 | Reserved | |
| 4 | Reserved | |
| 5 | Reserved | |
| 6 | Reserved | |
| 7 | Reserved |
Statistics
Broadcast by AnalogX every 1 second.
Address
CAN ID: Base + 2
| Offset | What | Value |
|---|---|---|
| 0 | Current Sample Rate | 1 - 255Hz |
| 1 | Reserved | |
| 2 | Reserved | |
| 3 | Reserved | |
| 4 | Reserved | |
| 5 | Major Version | Firmware Major Version Number |
| 6 | Minor Version | Firmware Minor Version Number |
| 7 | Patch Version | Firmware Patch version number |
Sample Broadcast
Sample Broadcast for Analog inputs. The samples are broadcast based on the configured sample rate (default is 50Hz)
Scaling and Data format
- Scaling: 0-5000mV
- Data format: Little Endian
Address
- CAN ID: Base + 20
| Offset | What | Value |
|---|---|---|
| 0 | Channel 1, low byte | |
| 1 | Channel 1, high byte | |
| 2 | Channel 2, low byte | |
| 3 | Channel 2, high byte | |
| 4 | Channel 3, low byte | |
| 5 | Channel 3, high byte | |
| 6 | Channel 4, low byte | |
| 7 | Channel 4, high byte |
