mirror of
https://github.com/Bodmer/TFT_eSPI.git
synced 2024-09-21 02:17:13 +00:00
3c6dab0a52
// For RP2040 processor and 8 or 16 bit parallel displays: // The parallel interface write cycle period is derived from a division of the CPU clock // speed so scales with the processor clock. This means that the divider ratio may need // to be increased when overclocking. I may also need to be adjusted dependant on the // display controller type (ILI94341, HX8357C etc). If RP2040_PIO_CLK_DIV is not defined // the library will set default values which may not suit your display. // The display controller data sheet will specify the minimum write cycle period. The // controllers often work reliably for shorter periods, however if the period is too short // the display may not initialise or graphics will become corrupted. // PIO write cycle frequency = (CPU clock/(4 * RP2040_PIO_CLK_DIV)) //#define RP2040_PIO_CLK_DIV 1 // 32ns write cycle at 125MHz CPU clock #define RP2040_PIO_CLK_DIV 2 // 64ns write cycle at 125MHz CPU clock //#define RP2040_PIO_CLK_DIV 3 // 96ns write cycle at 125MHz CPU clock
141 lines
2.7 KiB
C
141 lines
2.7 KiB
C
// This is the command sequence that rotates the ST7789 driver coordinate frame
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writecommand(TFT_MADCTL);
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rotation = m % 4;
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switch (rotation) {
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case 0: // Portrait
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#ifdef CGRAM_OFFSET
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if (_init_width == 135)
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{
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colstart = 52;
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rowstart = 40;
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}
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else if(_init_height == 280)
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{
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colstart = 0;
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rowstart = 20;
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}
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else if(_init_width == 172)
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{
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colstart = 34;
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rowstart = 0;
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}
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else if(_init_width == 170)
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{
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colstart = 35;
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rowstart = 0;
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}
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else
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{
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colstart = 0;
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rowstart = 0;
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}
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#endif
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writedata(TFT_MAD_COLOR_ORDER);
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_width = _init_width;
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_height = _init_height;
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break;
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case 1: // Landscape (Portrait + 90)
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#ifdef CGRAM_OFFSET
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if (_init_width == 135)
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{
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colstart = 40;
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rowstart = 53;
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}
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else if(_init_height == 280)
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{
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colstart = 20;
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rowstart = 0;
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}
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else if(_init_width == 172)
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{
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colstart = 0;
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rowstart = 34;
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}
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else if(_init_width == 170)
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{
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colstart = 0;
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rowstart = 35;
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}
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else
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{
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colstart = 0;
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rowstart = 0;
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}
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#endif
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writedata(TFT_MAD_MX | TFT_MAD_MV | TFT_MAD_COLOR_ORDER);
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_width = _init_height;
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_height = _init_width;
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break;
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case 2: // Inverter portrait
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#ifdef CGRAM_OFFSET
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if (_init_width == 135)
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{
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colstart = 53;
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rowstart = 40;
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}
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else if(_init_height == 280)
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{
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colstart = 0;
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rowstart = 20;
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}
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else if(_init_width == 172)
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{
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colstart = 34;
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rowstart = 0;
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}
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else if(_init_width == 170)
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{
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colstart = 35;
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rowstart = 0;
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}
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else
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{
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colstart = 0;
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rowstart = 80;
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}
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#endif
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writedata(TFT_MAD_MX | TFT_MAD_MY | TFT_MAD_COLOR_ORDER);
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_width = _init_width;
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_height = _init_height;
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break;
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case 3: // Inverted landscape
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#ifdef CGRAM_OFFSET
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if (_init_width == 135)
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{
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colstart = 40;
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rowstart = 52;
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}
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else if(_init_height == 280)
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{
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colstart = 20;
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rowstart = 0;
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}
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else if(_init_width == 172)
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{
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colstart = 0;
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rowstart = 34;
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}
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else if(_init_width == 170)
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{
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colstart = 0;
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rowstart = 35;
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}
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else
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{
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colstart = 80;
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rowstart = 0;
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}
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#endif
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writedata(TFT_MAD_MV | TFT_MAD_MY | TFT_MAD_COLOR_ORDER);
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_width = _init_height;
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_height = _init_width;
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break;
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}
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