GFX on pic32MK

[raf6410]

Hi,

I use the project "legato_quickstart" on my dev board curiosity pic32 mz ef.
it's works
i have try to convert this project to a PIC 32MK1024MCM100 and now it NOT working.
After many try, nothings works.
they are no activity on SPICLK pin.
I use terminal ( putty) to try to debug, the program it still running.

Please, could you help me.

[MHGC]

Hi,

Is this flavor of the legato_quickstart the one you are based off of?
https://microchip-mplab-harmony.github.io/gfx_apps_pic32mz_ef/apps/legato_quickstart/firmware/legato_qs_mzef_cu2_cpro_spi.X/

Are you using the same display for the PIC32MK1024MCM100?

[raf6410]

hi,

Yes i use this one. I try :

1. in properties i change the ref of the pic => building ok => but nothings on the screen
2. use the files .MHC of the exemple in a new project base on pic 32MK => building ok => but nothings on the screen
3. I switch the display on my board curiosity board pic 32mz => it works on this one

[MHGC]

Do you have the datasheet for your display?

Also, can you post a picture of the MHC project diagram (the one in the Harmony Configurator) for 2.?

[raf6410]

hi,

this is my display : http://www.lcdwiki.com/3.5inch_SPI_Module_ILI9488_SKU:MSP3520

I use harmony 3 :
- core v3.9.0
- csp v3.9.0
- gfx v3.9.2

[MHGC]

Ok. Next is the pin manager.
Do these pin definitions:
GFX_DISP_INTF_PIN_RESET (GPIO OUT/LATCH HIGH)
GFX_DISP_INTF_PIN_RSDC (GPIO OUT/LATCH HIGH)
GFX_DISP_INTF_PIN_CS (GPIO OUT/LATCH HIGH)
GFX_DISP_INTF_PIN_BACKLIGHT (GPIO OUT/LATCH LOW)

match with the pins from your PIC to the interface?

[MHGC]

Can you measure the pin output of each of these pins? Compare the behavior out of the MZ EF Curiosity 2.0 vs your board?
See which ones have similar behavior and which one does not?

[raf6410]

HI,
i have check pin manager these signals are OK and correctly attributed
I measure each signal, all Signals are differents GPIO PIN and SPI PIN
SPI pin are correctly attach in PIN manager

[MHGC]

Hi,

"all Signals are differents GPIO PIN and SPI PIN"
Do you mean these signals look different coming out of MZ EF versus your MK board?

Can you probe the 4-line SPI pins durng driver initialization in DRV_ILI9488_Configure and send picture of the probe signals?

[raf6410]

Hi,

Sorry for my response late.

For exemple below the signal SPI Clock on initialization phase on my custom PIC32MK board

and now the same signal on the PIC32 MZ EF curiosity

I try to connect my display on all SPI on the PIC, it is the same probleme