UART comunication PSOC 5LP

sorry ...
Try this link  https://www.itead.cc/wiki/Nextion_HMI_Solution

arduino utiliza una biblioteca especifica para esta pantalla....asi que eso lo hace un poco mas fácil....
For example to send a data to the progress bar send this

Serial.print("j0.val="); //Variable of the screen to modify

Serial.print(val); //Send the optimum value of the potentiometer

Serial.write(0xff);

Serial.write(0xff);

Serial.write(0xff);

My doubt is, that sentence use in the psoc creator pra to send the value that corresponds to "j0.val" of the screen. Could you use this UART_PutString () statement for example? But where do I put the address "J0.val"?
Thank you friend...

thank you friend ANKS

Thanks for your advice, I managed to communicate with the screen, and managed to send a text, the problem is that I can not send the numerical data correctly, perhaps because of a formatting problem I suppose. Convert the character to the voltage value that I take from a potentiometer using sprintf () and send it, but does not show it, maybe I should send them as numerical data in hex?.

There is a way to directly change a number that represents the value in volt of the state of the potentiometer to another format ... for example to hexa. I take that value in volt and conveti to character

The value of str is a character, my question is if it is correct to send it like this.
I send it as in the following example but it does not show na on the screen.

sprintf (str,"%.4f",voltage);

uart_putstring("n0.val=");

uart_putchar(0x22);

uart_putstring(str);

uart_putchar(0xff);

uart_putchar(0xff);

uart_putchar(0xff);

I tried sending a text and it sends it of the following form without problems:

uart_putstring("t0.txt=");

uart_putchar(0x22);

uart_putstring("hola");

uart_putchar(0x22);

uart_putchar(0xff);

uart_putchar(0xff);

uart_putchar(0xff);

Also try the following:

sprintf (str,"%.4f",voltage);

uart_putstring("t0.txt=");

uart_putchar(0x22);

uart_putstring(str);

uart_putchar(0x22);

uart_putchar(0xff);

uart_putchar(0xff);

uart_putchar(0xff);

And the value displayed on the screen is 0.000, When I move the pot the value changes to -0.000, the 0.0, But never shows another value. Any proposal......thank you

Already make the changes and is working very well.... thank you very much for your help