106 lines
2.9 KiB
Plaintext
106 lines
2.9 KiB
Plaintext
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* Created new repo cloned from my local repo
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* created new branch h7 from active-devel
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* created dir basesw/ovi40-h7
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* Generated from ovi40-h7.ioc CubeMX sources
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* Added most to commit, some to .gitignore (license or not used)
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CHECK USB DEVICE FIFO BUFFERS SIZE CONFIGURATION!
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New Graphics Driver
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Example SSD1289
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Add an enum value to mchf_display_types_t to uniquely identify the display type
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If a controller & display uses an already existing combination of control functions
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but with a different detectable controller type, you may reuse the already existing
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display type and just identify and initialize differently.
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Examples are the HY28B_PARALLEL code, which supports multiple controllers, which differ only
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in the initialization sequence.
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However, same controller but with different communication interface (parallel instead of SPI)
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requires a new mchf_display_types_t value.
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typedef enum
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{
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DISPLAY_NONE = 0,
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DISPLAY_HY28A_SPI,
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DISPLAY_HY28B_SPI,
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DISPLAY_HY28B_PARALLEL,
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DISPLAY_RA8875_SPI,
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DISPLAY_RA8875_PARALLEL,
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DISPLAY_ILI9486_PARALLEL,
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DISPLAY_RPI_SPI,
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DISPLAY_HY32D_PARALLEL_SSD1289,
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// keep this always at the end of the enum
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DISPLAY_NUM
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} mchf_display_types_t;
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Define Register Data for Screen Init. It is important
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to provide the second data structure with correct data, since otherwise
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init will not do the right job. Be careful here.
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Surrond with #ifdef
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```
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#ifdef USE_GFX_SSD1289
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static const RegisterValue_t ssd1289[] =
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{
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{0x00,0x0001},
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...
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{0x4e,0x0000},
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};
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static const RegisterValueSetInfo_t ssd1289_regs =
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{
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ssd1289, sizeof(ssd1289)/sizeof(RegisterValue_t)
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};
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#endif
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```
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Add appropriate display infos (below we only filled information for parallel, spi requires
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a few more functions to be provided) if necessary (i.e. if you defined a new mchf_display_types_t value).
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The minimum you have to implement a display detection (either by extending an existing one or w.
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```
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static uint16_t UiLcdHy28_ReadDisplayId_SSD1289()
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{
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uint16_t retval = UiLcdHy28_ReadReg(0x00);
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switch (retval)
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{
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case 0x8989: // HY28A - SPI interface only (ILI9320 controller)
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mchf_display.reg_info = &ssd1289_regs;
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break;
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default:
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retval = 0;
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}
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return retval;
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}
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```
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If you reuse functions from another controller, you may need to make sure the #ifdef
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still enable the required functions if only the new controller is selected.
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If new control functions are required, write them as static functions,
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you have plenty of examples in the existing code.
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Remember to use
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```
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const uhsdr_display_info_t display_infos[] = {
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....
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#ifdef USE_GFX_SSD1289
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{
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DISPLAY_HY32D_PARALLEL_SSD1289, "HY32D Para. SSD1289",
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.SetActiveWindow = UiLcdHy28_SetActiveWindow_SSD1289,
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.SetCursorA = UiLcdHy28_SetCursorA_ILI932x,
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.WriteRAM_Prepare = UiLcdHy28_WriteRAM_Prepare_ILI932x,
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},
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#endif
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...
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};
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```
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