5 Setting of Baud Rate and COM Port
- Choose <Options><Select Port>
- Select the COM port to which your GEMINI-1
programmer is connected.
- Select the required target baud rate to
communicate with the target microcontroller.
The default is 9,600 baud which should work
reliably for most target systems.
If you wish to minimise the programming time, the baud rate may be increased. The
reliability of the programming operation depends on the target device and, to some
extent, the speed of the PC. Please refer to the ‘Microcontroller Timing Characteristics
Section’ on page 46 for further information.
6 Performing a ‘Signature Check’ of the target device
A quick check to make sure that the programmer is able to communicate with the target
device is to perform a ‘Signature Check’ operation.
- Select <Device><Check Signature>
-> The yellow ‘Active’ LED on the programmer should illuminate
-> The ‘Device Signature (ID) should be read from the target device and validated:
• PASS: Signature matches selected device
• FAIL: Incorrect signature - The wrong device may have been selected.
• Device not responding: Programmer could not communicate with target device.
(See Error Messages section)
7 Loading user code to the buffer area
To program the target system with real data, the buffer must first be loaded with the
user code.
- Select <File><Load to Buffer...>
The ‘Load to Buffer’ dialog as shown in Figure 12
- To load a file into the code area, click <Browse...> in the code section
- Select the required file (*.hex or *.bin)
- Click <Load>
- Click <Ok> to quit the ‘Load dialog box’.
Please note: The current Philips microcontrollers do not feature an EEPROM (Data)
Section, so the ‘Data’ dialogue has been greyed out.
Philips Device Programming Guide continued
Figure 11
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