by 5B4AIY » 15 Aug 2015 05:57
Hi, Juhani,
When using the Ingenia loader, the bootloader in the PA-100D uses an automatic speed detection algorithm, so that it is normally not necessary to select a port speed. However, sometimes the USB to RS232 convertor does not operate correctly at the highest speed, 115kb and you may have to try a slower speed. I am assuming that you have checked that the PA-100D serial port is operating correctly, in particular that the transmit data idle voltage is about -9V, showing that the MAX-232 interface chip is working correctly. I also suggest attempting to communicate with the amplifier using your terminal program at 115,200 baud and see if this works. I am also assuming that when you power up the PA-100D in the flash writer mode you see the message:
JUMA PA-100 Flash
Writer Started..
on the LCD. You can safely test this by this by holding the OPER button pressed, and then briefly press the PWR button. The message should be displayed for about 5 seconds, and then the amplifier should drop into its normal operating mode. If the message is displayed, this indicates that the bootloader initialization code is there.
I would then suggest when starting the Ingenia loader to configure it to run at a slower speed and see if you receive the message:
detection success
dsPIC6014a detected
firmware version 1.1
displayed on the PC.
If this message is not displayed, and the PA-100D simply times-out and drops into its normal operating mode, then this means that the boot loader and the Ingenia loader are not communicating. This is what error code -5 means. Try using a slower speed, 38,400 baud, for example.
Since you can communicate via a terminal program, the serial cable and the jumper settings used in this test should then work with the Ingenia loader. See if you can locate a Windows-XP machine and try that although I have to say that so far in four years I have not had a failure with Windows 7 when the permissions are set correctly. In the final analysis, you may have to re-flash the microprocessor with the full HEX loads file including the boot loader code. This requires an entirely different procedure, which I can give you if you wish.
73, Adrian