hello sir, This is my first project in ARM7.e design a vb software in which we generate many different waveform with its many(depending on amplitude) different hex value.we are using UART for serial communication.we have to generate analog ouput which shows the same waveform as generated in vb software window.For that we are using DAC.Hex value generated in vb we have to access that value serially and send that value to DAC.How I can access these HEX value.please help me for same.
thank you.
It still isn't clear what you mean by "it".
On the ARM, you will need to:
1. Receive data from the UART;
2. Interpret what you receive as values for the DAC;
3. Use those values to control the DAC.
As already noted, the processor documentation (datasheet, user manual, application notes, examples, etc) will tell you how to configure & use the UART and DAC.
Again, don't try to do it all in big blob - take small steps:
I would suggest that you start with the UART:
First, a simple "hello world" project to send stuff out of the UART;
Then extend the project to send different strings based, say, on pressing buttons;
Then extend the project to also receive from the UART;
Then extend the project to do something simple (eg, light an LED) based on the received data;
etc, etc,...