Need help with rs232 & LCD board

[Barny]

Hello,
i am a student and unfortunately a beginner working with flowcode and eblocks, but it is very important for a project.
I am using an Atmel8 16 PU, the EP019 – Atmel AVR Board and the EP005 – ECD Board, for programming FLowcode4
There are two questions:
• LCD Board:
I only try to start it and write a string and it does not work …. Unbelievable (it looks like activated but is only dark).
My settings:
- Data1 Port B Pin0
- Data2 PortB Pin1
- Data3 PortB Pin2
- Data3 PortB Pin3
- RS PortB Pin4
- Enable PortB Pin4
In flowcode i only use two macros for starting the LCD and write a String.
I don’t know what I am doing wrong??!
• Rs232
I try to make a simply connections between the programming board and the computer (Hyperterminal). I also use a “usb to uart – bridge” (pc don’t have a seriel interface) and I think there must be the problem, but don’t know why.
When I send a character it still reach the computer, but when I want to send a character from the computer to my processor, nothing is happening. I only use the macro “receivers232char (nTimeout=50)”.
(Boudrate = 9600, 1 Stopbit, External crystal with 20MHz)
I hope somebody is able to help me!

Any ideas please!?
Thanks Barny

[Benj]

Hello Barny,

My guess would be that your chip has the divide by 8 configuration setting enabled which means your device is running 8 times slower then you think it is. You can confirm this by connecting a LED to an output pin and trying a 1 second flasher program. To get around this you can change your clock speed in the View -> Proj options menu or you can change your configuration settings.

[Sean]

Another possible problem, if you have configured the device to use the external crystal oscillator, is that the EB019 is supplied with a 20MHz crystal and you appear to be using a 16MHz device.

You might need to change the crystal to allow it to be used by a 16MHz spec device.