Genesis Sequoia Fli32626 多屏参切换编程方法（不掉电切换屏参）.docx

Squoia FLi32626 多屏参切换编程方法通常，在用Sequoia参考软件编译生成的HEX文件中只包含一个屏参。即所使用的屏参已在HEX文件中固定，如果要更换屏参必须要更改软件，重新编译并烧入FLASH。这对具有较强文档管理水平的大公司来说，并不是问题，只要将所有的软件登记归档，并记录对应的屏的型号即可；但是对一些小公司而言，特别是在频繁更换屏的情况下，或是软件工程师换人的情况下，很容易造成混乱。这时，就希望把可能用到的所有屏的参数都集成一个软件中，生产时根据实际所使用的屏，通过菜单或串口来选择，并保存在NVRAM中。本文将讲解FLI32626不掉电情况下多屏参即时切换的软件编写方法。在参考软件中，运行时所使用的屏参是在panel.h 通过指定DEFAULT_PANEL来实现的。如使用LG 1080P的屏，则打开如下的宏定义即可：#define DEFAULT_PANELLG_1080P_LC370WU1如果要使用其它的屏参，则需要打开对应的宏定义并重新编译。那么如何将多个屏参都包含到一个软件中，并可即时切换呢？在参考软件中，已经给出了集成多屏参的方法，只不过需要在选择所需的屏参后关机并重新开机，新的屏参才会起作用。下面先来分析开机过程中屏参的调用流程。void ApplicationInit(void)/在panel.h中.AssignPanelData(0); / Initialize default panel data . BoardInit(); NvramCheck(); / Get all the UserPref values #ifdef MULTIPANEL_DATA_IN_ONE_HEX /This code is for supporting multipip panel data in single hex (Appstest 255 panel_id) / The calling of AssignPanelData() above only sets up the default panel since I2C / is not initialized. As a result, UserPrefPanelSelect is always zero at that moment. / Now after NvramCheck() is called, I2C is running and UserPrefPanelSelect carries / the saved panel ID. AssignPanelData(UserPrefPanelSelect); / DDDS Initialization (Per Panel) gm_DdsSetInitFreq(CLK_DDDS, (DWORD)gmv_OUTPUT_HTOTAL * gmv_OUTPUT_VTOTAL * gmvb_OutputFrameRate); / EDDS Initialization (108MHz) gm_DdsSetInitFreq(CLK_EDDS, FREQ_108MHz); #if (FEATURE_DECODER = TWO_DECODER) gm_DdsSetInitFreq(CLK_EDDS2, FREQ_108MHz); #endif / Freerun DDS gmvb_DDDSSourceChannel = gmvb_MainChannel; gm_SetDisplayFreeRun(); #endif在上述初始化过程中，首先调用AssignPanelData(0) 将CurrentPanelData指向DEFAULT_PANEL，即使用panel.h 中定义的缺省屏参。在NvramCheck()之后，有一个宏定义MULTIPANEL_DATA_IN_ONE_HEX， 如果定义了该宏（在system.h中），则将根据从NVRAM中取得的UserPrefPanelSelect，重新分配屏参：AssignPanelData(UserPrefPanelSelect);在正常开机时，可以通过遥控菜单或串口改变UserPrefPanelSelect的值，将该值保存到NVRAM中之后，关机再重新开机即可选用所选的屏参，参考appstest 255 指令如下：case Func255: SelectPanel()； break; void SelectPanel(void) InitNvram(); UserPrefPanelSelect = B_Param; SaveModeIndependentSettings(); for (i=1; PanelArrayi != NULL_PTR; i+) if (PanelArrayi = PanelArray) continue; / / For manually modified panel, search for panel ID based on userpreference / if (B_Param) if (PanelArrayi-ID = B_Param) CurrentPanelData = PanelArrayi; return; / / Otherwise, use default panel / else if (PanelArrayi-ID = DEFAULT_PANEL) CurrentPanelData = PanelArrayi; return; msg (Panel ID given is not supported);需要注意的是，如果要集成多屏参，除了要打开宏定义 MULTIPANEL_DATA_IN_ONE_HEX之外，还要确保要使用的屏参头文件已包含在软件中，否则在AssignPanelData(UserPrefPanelSelect)中将搜索不到所需的屏参，结果仍然使用缺省屏参。见下面两点：1. PanelArray 中必须有对应的屏参数据地址ROM gmt_PanelData * ROM PanelArray =NULL_PTR,/ Do not remove - place holder for default panel selected by PANEL definition&Panel_LG_XGA_LM150X06,&Panel_LG_XGA_LM150X06_VGA,&Panel_LG_WXGA_LM171W01,&Panel_LG_WXGA_LC171W03,&Panel_LG_WXGA_LC230W01,&Panel_LG_WXGA_LC300_W01,&Panel_LG_WXGA_LC320W01,&Panel_SAMSUNG_WXGA_LTM170W01,&Panel_SAMSUNG_SXGA_LTM170E4_L01,&Panel_SAMSUNG_UXGA_LTM213U4_L01,&Panel_LG_SXGA_LM190E01,&Panel_CUSTOMER_WXGA_PANEL_1,&Panel_CUSTOMER_WXGA_1366,&Panel_CUSTOMER_WXGA_DLP,&Panel_CUSTOMER_WXGA_720P,&Panel_LG_WXGA_LC171W03_VGA,&Panel_Sanyo_TM290WX_71N31,&Panel_AUO_WXGA_T315XW01,&Panel_LG_WXGA_LC200WX1,#if (FEATURE_1080P_PANEL = ENABLE)&Panel_1080P_AUO_T370HW01,&Panel_1080P_AUO_T370HW02,&Panel_1080P_CMO_V370H1_L01,&Panel_SAMSUNG_WUXGA_LTM240W1_L01,&Panel_LG_UXGA_LM201U03,&Panel_CUSTOMER_1080P_DVIOUT,&Panel_1080P_LG_LC370WU1,/27&Panel_1080P_IPS_AX094F002E,&Panel_SAMSUNG_1080P_LTA400HH_LH1,&Panel_LG_WSXGA_LM220WE1_TLD1,#endif&Panel_CRT_33K,&Panel_CRT_38K,&Panel_1080I,&Panel_LG_WXGA_LC370WX2,&Panel_CUSTOMER_720P_DVIOUT,&Panel_CUSTOMER_1080I_DVIOUT,&Panel_CUSTOMER_480P_DVIOUT,#ifdef VIDEO_WALL &Panel_HDMI_OUT_1080P60,/for VIDEO_WALL#endifNULL_PTR,/ Do not remove - place holder for end of list;2. Panel.h 中必须打开对应的宏定义/#define INCLUDE_LG_XGA_150X06/#define INCLUDE_LG_XGA_150X06_VGA#define INCLUDE_LG_WXGA_LM171W01#define INCLUDE_LG_WXGA_LC171W03/#define INCLUDE_LG_WXGA_LC171W03_VGA/#define INCLUDE_LG_WXGA_LC230W01/#define INCLUDE_LG_WXGA_LC300_W01/#define INCLUDE_LG_WXGA_LC320W01/#defineINCLUDE_LG_WXGA_LC370WX2 / 100/120 Hz panel/#define INCLUDE_SAMSUNG_WXGA_LTM170W01/#define INCLUDE_SAMSUNG_SXGA_LTM170E4_L01/#define INCLUDE_SAMSUNG_UXGA_LTM213U4_L01/#define INCLUDE_LG_SXGA_LM190E01/#define INCLUDE_Sanyo_TM290WX_71N31/#define INCLUDE_AUO_WXGA_T315XW01/#define INCLUDE_CUSTOMER_WXGA_PANEL_1/#define INCLUDE_CUSTOMER_WXGA_DLP/#define INCLUDE_CUSTOMER_WXGA_720P/#define INCLUDE_CUSTOMER_WXGA_1366/#define INCLUDE_LG_WXGA_LC200WX1#if (FEATURE_1080P_PANEL = ENABLE)#define INCLUDE_AUO_1080P_T370HW01/#define INCLUDE_AUO_1080P_T370HW02/#define INCLUDE_CMO_1080P_V370H1_L01/#define INCLUDE_SAMSUNG_WUXGA_LTM240W1_L01/#define INCLUDE_LG_UXGA_LM201U03/#define INCLUDE_CUSTOMER_1080P_DVIOUT#define INCLUDE_LG_1080P_LC370WU1/ #define INCLUDE_IPS_1080P_AX094F002E/#define INCLUDE_SAMSUNG_1080P_LTA400HH_LH1/#define INCLUDE_LG_WSXGA_LM220WE1_TLD1#endif/#define INCLUDE_CRT_33K/#define INCLUDE_CRT_38K/#define INCLUDE_1080I/#define INCLUDE_CUSTOMER_720P_DVIOUT/#define INCLUDE_CUSTOMER_1080I_DVIOUT/#define INCLUDE_CUSTOMER_480P_DVIOUT如上的定义中，只有红色的四个屏参可选中。上面讲述的是参考软件中可使用的多屏参切换方法，缺点是不能即时切换，切换之后必须先掉电再重新开机后才能看到效果。本文的目的是要实现不掉电情况下即时切换屏参，因此必须在参考软件的基础上做进一步的改动才行。在原始的SelectPanel(void)中，只实现了保存UserPrefPanelSelect，并改变CurrentPanelData指向的功能，但是并没有根据CurrentPanelData指向的屏参去更改显示的Timing， 因此自然看不到即时的变化效果。要想看到即时的屏参效果，就必须在SelectPanel(void)中 增加后续的动作，具体思路如下：void SelectPanel(BYTE PanelIndex) #ifdef MULTIPANEL_DATA_IN_ONE_HEX/1. 保存选择的屏参IDUserPrefPanelSelect = PanelIndex; SaveModeIndependentSettings();/2. 重新设定CurrentPanelData指向与HT