do you use your own target board or out TWR-8400 tower board? do you use TWR-8400 on board OSJTAG circuit or Universal multilink device to debug?
If possible, pls give your tel number so that I can call you
Thanks for your reply,sir.I have solved the question just now.It's the power's fault.When the program began to dowanload ,the power can't keep output steady voltage on 3.3V.
Sorry.what I mean is the target board.When I use the OSJTAG's power supply to my target board,the program's download is OK.However,When I power the target board with another supply,the code warrior's window shows that it lost the connection with the target board,I test the target supply voltage of the board's chip,It's about 3.3V,so it's Ok.I'm really confused about the reason why the code download failed.I wonder it's the target board's voltage error,but it was tested at 3.3V.
Thanks for your reply .
Em,Sorry……That's OK,Sir.The question I've meet is that I used the TWR-56F8400 board to download the program to my MC56F84789 chip,but it's alaways failed. When I cut the main circuit'sinta power and only link the TWR_56F8400's USB port to my computer,link the TWR-56F8400's JTAG port to the main circuit's JTAG port , the code can be downloaded to the main circuit 'MC56F84789 chip .However,when I turn on the main circuit's power.It's always failed to download.The CodeWarrior's intarface shows that the chip is secured. When I click the "yes" button,It shows…….
When I click the retry,it still don't work and popup the same window.
It really bother me a lot.I'm looking forward to your help.
could you please write your question in English? This is international community and support is located all over the world, so not all members are able to communicate in Chinese. Thank you.