Hello Ganou.

Thanks for your post.
Which display is it that you have? Can you please also give me your email address? I want to send you a .usf (uPriject) file to try.

Thanks,

Thank you for your response.

My LCD module type is LK204-25. My e-mail is ganou@iupui.edu.
Could your tell me how to ...

It is normal before I use the default baud rate, including sending data and receiving data.

After I change the baud rate, the screen turns to be whole screen black block. later I try to "manual override". Every step finished according to the instruction, but last step-Edit and save settings-I don ...

It is normal before I use the default baud rate, including sending data and receiving data.

After I change the baud rate, the screen turns to be whole screen black block. later I try to "manual override". Every step finished according to the instruction, but last step-Edit and save settings-I don't ...

Hi,

I have found that problem and overcome it, and they can communicate between DSP and LCD now. Thank you!

Gansheng

Hi,

Moveover, I let DSP continue to send data through SCI port , and I use oscilloscope to check the RX and TX, then it can clearly show the wave signal. But if I connect to LCD, I still have not any new information on LCD. If someone supect the cable and connector, I have just used them to connect ...

Hello Devid,

Thank you for your answer.

I have check the connecteion for many times and try to use different methods, but I did not find any problem in connection. could you tell me more detail about intialization that you mentioned.

Thank you very much!

Gansheng

Hi Ganou,


I think there is ...

Thank you for your help.

But I am frustrating. Although I send text and command so beartifully from DSP to uproject or hyperterminal, I can not see any change on the LCD. Do you think this problem relate to the voltage level of the transceiver on my DSP board? Because my board is 3.3 V voltage ...

Hello,

When you send say the letter 'A' from the DSP, and check this out in uProject, do you see 0x41? Or, if you check this out with Hyperterminal, do you see 'A' ?

Yes, the same as you say.


When you send 0xFE 0x58, do you see this on uProject? You might just see a symbol and 'X' if you check ...

Hi,
Now on uproject I can clearly and correctly see the number that I send from DSP. When I connect the SCI to the LCD, the LCD has nothing changed. Could you give me some suggestion to kick this problem?Thank you!

The following is my code.

#include "DSP281x_Device.h" // DSP281x Headerfile Include ...

Hi Raquel,

Thank you for your answer.

Now I can see the contect that I send on the uProject, as you said, but they still cannot show on the LCD.

I have a basic question:
From the manual, I am not sure that the consequence of the sending. For example,
If I want to send command, such as "clear ...

Hi,

Thank you for your reply.

First, you correctly understood what I described my situation.

In addition, I want to tell more:

1, I connect the LCD through a RS 232 cable with two DB-9 connectors. Because two sides are DB-9 male connectors, so I have swap the threads in the cable.

2. The DSP ...

Hi all,

I try to use DSP tms320c2812 to control LK-204-25 LCD and keypad, connecting wiht SCI. I have composed a little program, and debuged it. But the result is worst. I hope the program can first finish clear screen, and then send 80 text to show on LCD. But there is nothing change on the LCD ...