can't get touch coordinates NO TOUCH ACTIVITY to work pls help

[artohautala]

Hi,
I'm trying to get touch coordinates to work but no success...
This works fine :

putc(0x6F); //cmd
putc(0x01);*/ //wait until touch press

... but I want to do function show_freq_level(); in loop for many many times while waiting for touch press:

do{
//do{
show_freq_level(); //WANT TO GO TO THIS FUNCTION
//FUNCTION LAST ABOUT 2 SECONDS

//THEN ASK IF THRERE'S ANY TOUCH ACTIVITY
putc(0x6F); //cmd
putc(0x04); //get touch status

//DO I HAVE TO WAIT ACK IB N THIS SITUATION??
com_ok(); //THIS WAITS FOR ACK (0X06)... IT WORKS FINE ELSEWHERE IN MY CODE

while(!kbhit(LCD));

delay_us(1);
touch_status_MSB = getc(LCD);//read character from UART
touch_status_LSB = getc(LCD);
//IF THERE IS'NT ANY TOUCH ACTIVITY RETURN TO FUNCTION show_freq_level(); }while(touch_status_LSB == 0);

but now my program don't react touching at all...
(show_freq_level() works ok)

So I like to know how and where and when (and how to use it) 0x6F 0x04 returns it's status value?
(If status is 0: no touch activity)

Is it one byte or two byte value ?

//these lines work fine to get touch goordinates
touch_status_MSB = getc(LCD);//read character from UART
touch_status_LSB = getc(LCD);



best regards

-arto-

[ESPsupport]

All touch commands always return 4 bytes, as per the manual.

[NathanSmutz]

ESPsupport wrote: All touch commands always return 4 bytes, as per the manual.

Don't forget to look for the status reply in the second byte of the 4 byte response.


BTW:
The manual I have, "PICASO-SGC_COMMANDS-SIS-rev9.pdf", is currently a little vague on that point.
The example given for touch status almost implies 2 bytes:

Serial ExampleCommand Data:6Fhex, 04hexPICASO-SGC Response:02hexGet Touch Status, Touch release reported.

[ESPsupport]

Yeah, people who 'skim' might miss the earlier line that says

Response x_coord(msb:lsb), y_coord(msb:lsb)

We'll see what can be done

[NathanSmutz]

I think that part was fine. A little blurb about the layout of the message returned by the statuscommand is all you need there, since that's the only oddball.