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刚用Renesas Starter Kit for Sh7124上手做测试，按照QuickStart所说的步骤，昨天顺利将“Tutorial”演示程序下载到测试板上并运行成功。

今天再想按此步骤测试，E8就死活也联不上了，检查下来的情况是：

1 将E8通过USB接入计算机后，在“设备管理器”中显示“Renesas Emulator”-“Renesas E-Series USB Driver”

2 运行HEW加载演示程序，然后点击“Connect”按纽，出现USB设备不安全删除告警
 弹出“Select USB Device”对话框，其中显示：E8DIRECT - 1 [Closed]

此时，在“设备管理器”中显示“Renesas USB Development Tools”- “E8Direct”

点击“Select USB Device”对话框中的OK后，出现“E8 Direct Configuration”对话框，
按照要求选择“250000”和“E8 provides 5.0V”后，点OK，出现下列告警：

Physical connection to target platform has been detected.  E8 powering at 5V
Failed to communicate with target. Trying Interface configuration again.

按照QuickStart说明，点Abort后，出现“Connection Error”对话框，选择“Download HMon using Boot...”点OK后，出现以下告警：

Checking for E8 update...
Adaptor checksum OK
Processing Data file :'e:\program files\renesas\hew\ADPFiles\E8-Rel-Img.mot'
Adaptor version number OK
 (current E8 Bootstub (Level 0) version = 2.00.00.000, FDT holds version 2.00.00.000, FDT requires version 2.00.XX.XXX)
Adaptor version type OK
 (current type = E8EMULATOR)
Processing Data file :'e:\program files\renesas\hew\ADPFiles\E8-Rel-Img.mot'
Adaptor version number OK
 (current E8 Adaptor Software (Level 1) version = 1.07.02.000, FDT holds version 1.07.00.000, FDT requires version 1.07.XX.XXX)
Preparing for re-enumeration of E8 to E8Direct...
Sending re-enumeration command...
Request sent successfully, closing E8 Comms...
Opening port 'E8DirectPrepare' ...
No E8 found to re-enumerate, looking for already re-enumerated E8Direct...
Found E8Direct already re-enumerated
Opening port 'E8DirectPrepare' ...
No E8 found to re-enumerate, looking for already re-enumerated E8Direct...
Found E8Direct already re-enumerated
Opening port 'E8DirectPrepare' ...
No E8 found to re-enumerate, looking for already re-enumerated E8Direct...
Found E8Direct already re-enumerated
Opening port 'E8DirectPrepare' ...
No E8 found to re-enumerate, looking for already re-enumerated E8Direct...
Found E8Direct already re-enumerated
Clock Frequency = 10.0000MHz, Clock Mode = 0, CKM = 4, and CKP = 4
Connecting to device 'SHTiny/71242F' on 'E8Direct'
Configuration:
'BOOT Mode' connection - using emulated interface
Opening port 'E8Direct' ...
ConfigString = [I|VERSION|1] [S|INTERFACE|USB] [S|PRODUCT|E8DIRECT] [S|BUSID|0]
Setting target power to 5.0V
Reset Active
Mode Pin Setting Active
Setting reset pin state low: 0x40, 0x00
Setting reset pin direction as output: 0x40, 0x40
Setting pin state: 0x9F, 0xFF
Sending reset: 0x00, 0x00, 0x00, 0xFA
Detected Target Device OK
UVcc = 5.00
Querying version info...
v01.00, firmware 0.16, product 1.00, build 5191
E8DIRECT
Initiating BOOT SCI sequence
Attempting 9600
Attempting 4800
Attempting 2400
Attempting 1200
Error No 15024: Boot failed
Error No 16132: Device does not support Protocol C

Opening port 'E8DirectPrepare' ...
No E8 found to re-enumerate, looking for already re-enumerated E8Direct...
Found E8Direct already re-enumerated

然后回到“Select USB Device”对话框。

希望Renesas工程师看一下，究竟出了什么问题？

第一次接触Renesas SH7124，头大啊！