Other Parts Discussed in Thread: TMS320F28335, MAX3232
Hi,
I've debugged my control board with TMS320F28335 several days. I've debugged the XINT, EPWM, SPI, GPIO
already, and it worked so well. When I debugged the SCI, the problem came out. I use the SCI-C as the RS232
(the level convert chip is MAX3232, and use opto-coupler as isolator between SCI-C of 28335 and the MAX3232),
and it can transmit and receive data normally. Then I disconnected the CCS and powered off the board. When
I powered on the board again, the emulator cannot connect the target any more! I debugged another board and the
same phenomenon happened.
When the board is powered on, the watchdog of 28335 can run normally. Is the 28335 still good? If it is so, why the
emulator cannot disconnect the 28335?
Thanks!