Renesas M16C FAMILY 用户手册

6 Troubleshooting 

 

3) If a communication error occurs frequently when debugging your program, check the 

following: 

 

When using an interrupt program in which multiple interrupts (interrupt from within 

another interrupt) are not enabled... 

-> If the interrupt program takes more than 260 µs of processing time, set the I flag to 

1 at the beginning of the interrupt program. 

If an error "Source file cannot be found" occurs, check the following: 

1) Whether the source file and the executable file exist in the same directory (or folder). 

2) Whether the source file has been opened by any editor other than the KD. 

Although no interrupts are accepted during a break, peripheral I/O continues operating. If 

the User Program is halted by a break after starting a timer, for example, timer interrupts 

are not accepted although the timer continues counting 

Coverage function cannot be used in KD. 

FoUSB dose not have “check sum” function. Therefore, when checking written contents, 

check “READ” > “Verify” > “Verification”. For details, refer to [4.1.3 Details of Main Button 

1]. 

The ID code of the User Program is not written to the microcomputer, but “all FFh” is 

written to it when using KD. Therefore, the ID code which is written to the microcomputer 

after KD exits is assumed “all FFh”. 

 

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