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Ethernet cable insertion detection, Change Ethernet spped an Duplex on the fly

David Frölich

Hello,

I use a LPC 1758 Device with V4.54 for a embedded sensor system.
The sensor has an Ethernet interface for data acquiring.

The data is read by two different systems (Hardwar_1, Hardware_2) which reconnected by hand.

Hardware_1:
100 MBit Ethernet Full Duplex

Hardware_2:
10 MBit Ethernet Half Duplex

When plug off the Network Hardware_1, and connect Hardware_2 middleware don't adjust Ethernet speed and duplex. Only solution to communicate with sensor on other speed rate is a soft reset of the processor.

Only the first adapter witch was connected with Sensor works fine.

The Problem was already discussed in 2011: www.onarm.com/.../

I have two questions:

1: is this bug already fixed in MDK 5. Is there a possibility to connect different MACs to the SOC.

2: is there a workaround, to initiate a reconnect with new Autonegotiation with other Ethernet interface while system is running.

With kind regards

David Froelich

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    Network version 7 fully supports cable connect on the fly. Ethernet PHY runs in auto-negotiation mode. The system reads link info, when link-up is detected, and dynamically configures ethernet MAC. You can connect to 10 Mbit, 100 Mbit, half or full duplex ethernet port and it will work.

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    Network version 7 fully supports cable connect on the fly. Ethernet PHY runs in auto-negotiation mode. The system reads link info, when link-up is detected, and dynamically configures ethernet MAC. You can connect to 10 Mbit, 100 Mbit, half or full duplex ethernet port and it will work.

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