How can I have the cells of a Listview blink with a given frequency? I tried changing the background color of a cell by recreating the listview in a timer interrupt: inside the interrupt I use the createListview function. it works for a few seconds then everything stops...
Any idea?
thanks

I tried to use both methods but no results. I debugged and I never see the part of the code regarding "case: WM_TIMER" being run.
Here is my code. What is wrong?

int main(void)
{

/* Enable I-Cache-------------------------------------------------------------*/
SCB_EnableICache();
/* Enable D-Cache-------------------------------------------------------------*/
SCB_EnableDCache();

/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();

/* Configure the system clock */
SystemClock_Config();

/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_RTC_Init();
MX_TIM10_Init();
MX_LTDC_Init();
MX_DMA2D_Init();
MX_FMC_Init();
MX_DSIHOST_DSI_Init();
MX_TIM6_Init();

BSP_TS_Init(800, 480); //initialize touch panel
BSP_SDRAM_Init(); /* Initializes the SDRAM device */
__HAL_RCC_CRC_CLK_ENABLE();
GUI_Init();
GUI_Clear();
GUI_SetLayerVisEx(1, 0);
GUI_SelectLayer(0);

WM_MULTIBUF_Enable(1);

CreateLISTAWindow();

HAL_TIM_Base_Init(&htim6);
HAL_TIM_Base_Start_IT(&htim6);

HAL_TIM_Base_Init(&htim10);
HAL_TIM_Base_Start_IT(&htim10);

while (1)
{

}


In another file there is the LISTVIEW code:



#include "DIALOG.h"

/*********************************************************************
*
* Defines
*
**********************************************************************
*/
#define ID_WINDOW_0 (GUI_ID_USER + 0x00)
#define ID_LISTVIEW_0 (GUI_ID_USER + 0x01)
#define USER_MESSAGE WM_USER + 0x00

WM_HWIN hItem;


// USER START (Optionally insert additional defines)
// USER END

/*********************************************************************
*
* Static data
*
**********************************************************************
*/

// USER START (Optionally insert additional static data)
// USER END

/*********************************************************************
*
* _aDialogCreate
*/
static const GUI_WIDGET_CREATE_INFO _aDialogCreate[] = {
{ WINDOW_CreateIndirect, "Window", ID_WINDOW_0, 0, 100, 800, 380, 0, 0x0, 0 },
{ LISTVIEW_CreateIndirect, "Listview", ID_LISTVIEW_0, 5, 42, 790, 104, 0, 0x0, 0 },
// USER START (Optionally insert additional widgets)
// USER END
};

/*********************************************************************
*
* Static code
*
**********************************************************************
*/

// USER START (Optionally insert additional static code)
// USER END

/*********************************************************************
*
* _cbDialog
*/
static void _cbDialog(WM_MESSAGE * pMsg) {
// WM_HWIN hItem;
int NCode;
int Id;

GUI_COLOR aBlinkColor[] = {GUI_WHITE, GUI_BLUE};
static int Index;
// USER START (Optionally insert additional variables)
// USER END

switch (pMsg->MsgId) {
case WM_INIT_DIALOG:
//
// Initialization of 'Listview'
//
hItem = WM_GetDialogItem(pMsg->hWin, ID_LISTVIEW_0);
LISTVIEW_AddColumn(hItem, 30, "Col 0", GUI_TA_HCENTER | GUI_TA_VCENTER);
LISTVIEW_AddColumn(hItem, 30, "Col 1", GUI_TA_HCENTER | GUI_TA_VCENTER);
LISTVIEW_AddColumn(hItem, 30, "Col 2", GUI_TA_HCENTER | GUI_TA_VCENTER);
LISTVIEW_AddRow(hItem, NULL);
LISTVIEW_SetGridVis(hItem, 1);
LISTVIEW_SetItemText(hItem, 0, 0, "Item");
LISTVIEW_SetItemText(hItem, 1, 0, "Item");
// USER START (Optionally insert additional code for further widget initialization)
// WM_CreateTimer(pMsg->hWin, 0, 500, 0);
// USER END
break;

case WM_TIMER:
//
// If the timer expires we set another color for the background and the text
//
hItem = WM_GetDialogItem(pMsg->hWin, ID_LISTVIEW_0);
LISTVIEW_SetBkColor(hItem, LISTVIEW_CI_SELFOCUS, aBlinkColor[Index]);
Index ^= 1;
LISTVIEW_SetTextColor(hItem, LISTVIEW_CI_SELFOCUS, aBlinkColor[Index]);
//
// Restart the timer, 0 = period like on creation
//
WM_RestartTimer((WM_HTIMER)pMsg->Data.v, 0);
break;

case WM_USER:
WM_CreateTimer(pMsg->hWin, 0, 500, 0);
break;

case WM_NOTIFY_PARENT:
Id = WM_GetId(pMsg->hWinSrc);
NCode = pMsg->Data.v;
switch(Id) {
case ID_LISTVIEW_0: // Notifications sent by 'Listview'
switch(NCode) {
case WM_NOTIFICATION_CLICKED:
// USER START (Optionally insert code for reacting on notification message)
// USER END
break;
case WM_NOTIFICATION_RELEASED:
// USER START (Optionally insert code for reacting on notification message)
// USER END
break;
case WM_NOTIFICATION_SEL_CHANGED:
// USER START (Optionally insert code for reacting on notification message)
// USER END
break;
// USER START (Optionally insert additional code for further notification handling)
// USER END
}
break;
// USER START (Optionally insert additional code for further Ids)
// USER END
}
break;
// USER START (Optionally insert additional message handling)
// USER END
default:
WM_DefaultProc(pMsg);
break;
}
}

/*********************************************************************
*
* Public code
*
**********************************************************************
*/
/*********************************************************************
*
* CreateWindow
*/
WM_HWIN CreateLISTAWindow(void);
WM_HWIN CreateLISTAWindow(void) {
WM_HWIN hWin;

hWin = GUI_CreateDialogBox(_aDialogCreate, GUI_COUNTOF(_aDialogCreate), _cbDialog, WM_HBKWIN, 0, 0);
return hWin;
}

// USER START (Optionally insert additional public code)
// USER END

/*************************** End of file ****************************/

The functions are correct since I had already imported the GUI_X.c file. By the way if I use the GUI_Delay(100) I notive that the code gets stuck inside this function. For this reason I started using GUI_Exec() to update the widgets.

Could my problem be related to the non-functioning of the GUI_Delay() function?
And in this case, why does the code get stuck inside the function?
Thanks

I tried with a timer interrupt that occurs every few seconds: in the interrupt the only thing I do is:




Then inside static void _cbDialog(WM_MESSAGE * pMsg), I added a new case for USER_MESSAGE:




The USER_MESSAGE is defined as:




What I believe is that, once WM_SendMessageNoPara() inside the interrupt is called, the code does not move to the callback _cbDialog() and does not execute the code inside case WM_USER.


My question is: why doesn't this happen? I think that once WM_SendMessageNoPara() is called the code automatically moves to the callback _cbDialog(), right?

I think I solved!
Thank you very much for you herp!