Troubleshooting - Epson S5U1C17001H User Manual

9 TrOUBleSHOOTInG

9 Troubleshooting
The following shows the problems attributable to the hardware:
T h e L E D3 ( E M U ) t h a t l i t w h e n t h e
S5U1C17001H was turned on does not go
out.
The following message appears when the
debugger (gdb.exe) in the host computer is
invoked:
Cannot open ICD17 usb driver.
The following message suddenly appears
while the target program is being executed by
the debugger (gdb.exe) in the host computer:
Break by external break.
Program received signal SIGINT, Interrupt.
The operation is unstable.
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Table 9.1 Troubleshooting
Symptom
(1) Is the target system turned on?
(2) Is the target system connected with the S5U1C17001H?
(3) Was the start up sequence correct?
(1) Is the S5U1C17001H connected to the host computer correctly?
(2) Was the debugger (gdb.exe) restar ted after resetting the
This problem is caused by low-level noise on the DSIO signal of the
target system or when the BRK IN pin goes GND level.
(1) Is the target system connected with a cable other than the supplied,
(2) Is there any conductive material near the BRK IN pin?
(1) Is the DSIO output level (SW4, SW5) set correctly?
(2) Is the target system connected with a cable other than the one
Cause/remedy
→ Turn the target system on.
→ See Section 4.1, "Connecting the Target System," and check to
see if the target system is connected correctly.
→ See Section 5.2, "Activation in ICD Mode," and start up in the
correct order.
→ See Section 4.2, "Connecting to the Host Computer" and check
to see if the S5U1C17001H is connected to the host computer
correctly.
S5U1C17001H while the debugger is running?
→ See Section 5.2, "Activation in ICD Mode," and start up in the
correct order.
or is the supplied cable used with extension cables?
→ Use the supplied cable. If it cannot be used then use extension
cables that are as short as possible and shield them in order to
avoid occurrence of low-level noise on the DSIO signal.
→ Remove the conductive material.
→ See Section 3.1, "Left Side Panel," and make sure that the setting
is correct.
supplied, or is the supplied cable used with extension cables?
→ Use the supplied cable. If it cannot be used then use extension
cables that are as short as possible and shield them in order to
avoid occurrence of low-level noise on the DSIO signal.
ePSOn
S5U1C17001H USer ManUal
(ICD MInI Ver. 1.0)