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MCU Applications Engineering
A.2 Debugging Problems
This section discusses the cause of the problem and countermeasures to resolve it. The common
problems encountered with debugging are:
? Erratic debug behavior
? Cannot connect to target
? Issues that may come up during debug operations
A.2.1 Erratic Debug Behavior
HEW allows you to launch multiple “Slave HEW’s”. If more that one HEW is opened in a debug
session and/or the FoUSB Programmer software is also running, erratic behavior can result.
Having more than one ICD installed can also cause erratic problems or cause HEW to crash.
A.2.2 Cannot Connect to Target
When the message ‘Can’t connect with the target’ is displayed when attempting to connect, there
are several reasons that may cause this message to appear. Each cause and the corresponding
countermeasure are discussed below.
?
The SKP is not connected correctly.
Please connect the ICD to your PC. Note: Regardless of whether the ICD is bus or target-
powered, please connect target board to ICD board first before plugging the USB cable to
your PC. Please see section 4 on system (SKP8CMINI-17) connectivity.
?
The ICD has no power (Power LED on ICD is off).
Please ensure that the Power Mode switch on the ICD is on the ‘USB’ side. In ‘Target’
position, the ICD is powered from the target side.
?
USB was not selected on the Init dialog box.
Please select ‘USB’ from the Init dialog box that is displayed right after you start a debug
Session.
?
The selected MCU on the ICD board and the actual target MCU (R8C/17) do not match.
Close the error message by clicking on ‘OK’ button, and then click on the ‘Cancel’ button of
the Init window. Make sure you select R5F21174.mcu’ (or‘R5F21154.mcu’ if using R8C/15). If
the MCU loaded on the ICD is different, HEW will re-program the ICD to match it.
?
The target MCU is damaged.
Try a different target board and see if HEW will connect as you may have a damaged board
or MCU.
SKP8CMINI-17 User’s Manual Rev. 1.1
16/22
March 2005
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相关PDF资料
SKP8CMINI DEV EVALUATION KIT R8C/11
SL03 10001 CURRENT LIMITER INRUSH 10 OHM 1A
SL03 22101 CURRNT LIMITER INRUSH 220 OHM 1A
SL05 30001 CURRENT LIMITER INRUSH 30 OHM 1A
SL05 4R003 CURRENT LIMITER INRUSH 4 OHM 3A
SL05 5R001 CURRENT LIMITER INRUSH 5 OHM 1A
SL08 10002 CURRENT LIMITER 10 OHM 2.5A
SL08 12101 CURRNT LIMITER INRUSH 120 OHM 1A
相关代理商/技术参数
SKP8G 制造商:Thomas & Betts 功能描述:PLUG EVERLOK GRD
SKP8GC 制造商:Thomas & Betts 功能描述:PLUG EVLOK SKP8
SKP9G 制造商:Thomas & Betts 功能描述:PLUG EVERLOK GRD
SKP9GC 制造商:Thomas & Betts 功能描述:PLUG MULTI-POLE EVLOK 8W
SKPC100-440 制造商:SEMIKRON 功能描述:SKPC100-440 fair SCR trigger module
SKPC100Z-440 制造商:SEMIKRON 功能描述:TRIGGER MODULE ZERO VOLTAGE 制造商:SEMIKRON 功能描述:SKPC100Z-440 fair SCR trigger module
SKPC100Z-440 制造商:SEMIKRON 功能描述:TRIGGER MODULE ZERO-V
SKPC100Z-440 制造商:SEMIKRON 功能描述:TRIGGER MODULE, ZERO VOLTAGE