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Freescale MQX Release Notes

Freescale Semiconductor

5.6 USB Host HUB Examples

The new HUB class support was enabled in HID example applications. The applications run

correctly with the USB device attached both directly, or through the hub. However, the example

code is still ready to handle a single device only. Combined Mouse+Keyboard demo is able to

handle one mouse and one keyboard simultaneously. Using multiple devices of the same kind

attached through the hub is not supported.

5.7 USB Host HUB Functionality with MCF5222x

The USB HUB functionality issue reported in the MQX release 3.0 (MCF52259) was solved.

However the HUB interfacing is still problematic with the older MCF52223. The issue is being

investigated and will be addressed by chip errata document.

5.8 BDM Connection Failures with MCF5223x

A problem of BDM communication loss was occasionally observed when debugging M52235EVB

applications. This issue is not related to MQX RTOS.

Workaround: This is may be solved by decreasing the BDM communication speed by factor 2 or

higher in the “Remote Debugging” settings panel for PEMICRO_USB connection. Press the “Edit

Connection” button and specify the Speed factor value “2”.

5.9 MQX Stationery / CodeWarrior FlashProgrammer Issue

An issue was identified in the CodeWarrior FlashProgrammer tool. The FlashProgrammer crashes

during target board initialization when project uses a “named source tree” in debugger file path. This

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ADC Release 3.1 Bedienungsanleitung Seite 27