[Studio and graphs]

I just saw the preview video of 0.20. Looks like some nice improvements are coming. 

I should also offer some feedback about the min screen size, I seem to have a problem on my laptop with 0.15. My laptop max resolution is 1280 X 800, which is too small. The studio clips off the bottom edge of the screen. I could perhaps push my windows bar off the bottom to get it to just barely fit, but it would be handy if I could scale in the vertical as well as the horizontal to make it fit the screen. 

[Studio and graphs]

Can uGFX Studio do graphs yet? I found the below link, which notes that it may come out some day. I currently have version 0.15. 

I also wanted to say great library. I'm pleasantly surprised by how much I can do with pretty much no feedback. The documentation and general code style has been good enough that a lesser experienced programmer like myself was able to get it up and running with out any real issues and with almost no help from the folks in the forum. That's great, and good job, keep up the good work. 

 

[Touch Screen Calibration]

With some help from a friend, I got it working at least from a hard coded standpoint. Using the example on the wiki we got it to display the existing calibrated values, which I then used to replace the numbers noted in the example on the wiki. This has also caused the stack overflow to go away. Next thing to learn is how to make this persistant, such that I can remove the hard coding. I understand there is a lib or similar that I'll need to add to make this easier to do. Also to get the values to hard code, I used the below snippet, then I added to the variables in the Expressions in chibistudio, and copied and pasted the values to the section of the example code. So far so good. 

bool_t SaveMouseCalibration(unsigned instance, const void *data, size_t sz)
{
    (void)instance;

    if (sz != sizeof(calibrationData) || instance != 0) {
        return FALSE;
    }

    memcpy((void*)&calibrationData, data, sz);

    return TRUE;
}

 

[Touch Screen Calibration]

I'm trying to get the touch screen to only calibrate when it's required. Is there an example that shows how to do the screen calibration? I'm sure I'm not the first one to do this, however I have not been able to find an existing reference example yet. Here is where I'm at and what I've attempted so far. 

I found this wiki page http://wiki.ugfx.org/index.php/Touchscreen_Calibration however I'm still lost. When I try to enable load and save like this in gfxconf.h 

#define GINPUT_TOUCH_USER_CALIBRATION_SAVE TRUE
#define GINPUT_TOUCH_USER_CALIBRATION_LOAD TRUE

I get this error which are sourced from ginput_mouse.c

undefined reference to `LoadMouseCalibration'
undefined reference to `SaveMouseCalibration'

Also I have an LCD button that will call ginputCalibrateMouse(0); When I press this button, the screen goes blank blue, my heartbeat LED stops blinking, and when I use the debugger pause I see dbg_panic_msg is a stack overflow. I'm not sure how to fix these issues. they are a bit beyond my programming abilities. One person suggested the program might not have enough memory for the stack. I see my make file notes CHIBIOS_LDSCRIPT = STM32F429xI.ld which contains this. 

MEMORY
{
    flash : org = 0x08000000, len = 2M
    ram0  : org = 0x20000000, len = 192k    /* SRAM1 + SRAM2 + SRAM3 */
    ram1  : org = 0x20000000, len = 112k    /* SRAM1 */
    ram2  : org = 0x2001C000, len = 16k     /* SRAM2 */
    ram3  : org = 0x20020000, len = 64k     /* SRAM3 */
    ram4  : org = 0x10000000, len = 64k     /* CCM SRAM */
    ram5  : org = 0x40024000, len = 4k      /* BCKP SRAM */
    ram6  : org = 0x00000000, len = 0
    ram7  : org = 0x00000000, len = 0
}

/* RAM region to be used for Main stack. This stack accommodates the processing
   of all exceptions and interrupts*/
REGION_ALIAS("MAIN_STACK_RAM", ram0);

/* RAM region to be used for the process stack. This is the stack used by
   the main() function.*/
REGION_ALIAS("PROCESS_STACK_RAM", ram0);

/* RAM region to be used for data segment.*/
REGION_ALIAS("DATA_RAM", ram0);

Perhaps I should change those ram#'s to something more, but I don't know what they should be changed too. 

Here's some back ground information about my setup. I'm using an STM32F429 discovery, and I started with this demo

I have made reasonably small changes. I added some buttons on the LCD which when pressed will increase and decrease the rate of blinking of the green LED. I also added some debug stuff like setting up the terminal1, and chibios debug options. I have put a copy of my project posted here https://sourceforge.net/p/daecu/code/HEAD/tree/Hardware/trunk/rusefi.com/Digital_Dash_STM32F429/A_stm32f429_discovery_chibios_3/ I'm using chibistudio for the IDE on a win64 platform. 

Are there any suggestions in what I could look at to help get this screen to only calibrate when needed instead of on every boot?