Basic Troubleshooting
If you get an error message when trying to communicate with the MAXQ7665 EV kit, it will be necessary to close and
reopen the IAR Embedded Workbench. If restarting IAR does not fix the problem, try removing the RS-232 cable from
the EV kit and reset the EV kit by cycling the power. Then reconnect the RS-232 cable, apply power, and open the IAR
toolset. If IAR still cannot communicate with the MAXQ7665 EV kit, review the
Advanced Troubleshooting
section below.
Advanced Troubleshooting
This section describes the steps necessary to install and use Maxim's
MAXQ7665 EV kit over an RS-232 connection. Debugging may be necessary if the IAR Embedded Workbench cannot
download to the MAXQ7665 EV kit.
Required Hardware and Software
1. PC with Windows® and an RS-232 port
2. MAXQ7665 EV Kit
3. MAXQ7665 EV Kit Install CD
4. AC-to-DC converter with 12V output
5. DB-9 to DB-9 RS-232 cable
Software Installation
The MTK utility is provided on the MAXQ7665 EV kit's Install CD in the MTK directory. Run the
SETUPEX.exe
file to install
the MTK application.
Hardware Installation
Connect the MAXQ7665 EV kit to the AC-power adapter. Connect the RS-232 serial port cable from the PC to the EV kit's
DB-9 connector labeled PC RS232.
Start the MTK Utility
Once the application is installed, open it and select the DS89C430 from the drop-down menu. This is the device used to
communicate between the PC's RS-232 port and the MAXQ7665's JTAG connections.
Set the MTK Options
Select Options and then Configure Serial Port. Enter the serial port that you are using, and set the speed for 115,200
Baud. Also select "Toggle DTR on connect/disconnect," "Save working directory on exit," and "Save COM Port Settings on
Exit," if these settings are not checked already.
Connect to the MAXQ7665 EV Kit
Select the Target and "Open COMx at 115200 baud," where x is the serial port configured from the Options above. Test
the RS-232 interface by pressing Enter or Return at the keyboard. The MAXQ7665 EV kit should respond with the prompt
character ">" each time that Enter is pressed. If this step is working, it indicates that the microcontroller on the EV kit is
recognizing the Enter and is ready for input. If this step does not work, see the
No Prompt
section below.
Connect to the MAXQ7665 Debug Engine
There is a simple method to determine the state of the MAXQ7665: "Get" all the internal registers. The Get command
Page 8 of 12
