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Add multi TFT option support for issue #663 

Avoid coordinate optimisation for sketch controlled multiple TFT displays. Add #define MULTI_TFT_SUPPORT
to prevent setAddr optimisation that relies on coordinate transfer minimisation.
This commit is contained in:
Bodmer 2020-06-15 12:22:38 +01:00
parent 24750c605d
commit 8cb59566d4
1 changed files with 16 additions and 0 deletions
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16
TFT_eSPI.cpp
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@ -2621,6 +2621,13 @@ void TFT_eSPI::setWindow(int32_t x0, int32_t y0, int32_t x1, int32_t y1)
y1+=rowstart; y1+=rowstart;
#endif #endif
#ifdef MULTI_TFT_SUPPORT
// No optimisation to permit multiple screens
DC_C; tft_Write_8(TFT_CASET);
DC_D; tft_Write_32C(x0, x1);
DC_C; tft_Write_8(TFT_PASET);
DC_D; tft_Write_32C(y0, y1);
#else
// No need to send x if it has not changed (speeds things up) // No need to send x if it has not changed (speeds things up)
if (addr_col != (x0<<16 | x1)) { if (addr_col != (x0<<16 | x1)) {
DC_C; tft_Write_8(TFT_CASET); DC_C; tft_Write_8(TFT_CASET);
@ -2634,6 +2641,7 @@ void TFT_eSPI::setWindow(int32_t x0, int32_t y0, int32_t x1, int32_t y1)
DC_D; tft_Write_32C(y0, y1); DC_D; tft_Write_32C(y0, y1);
addr_row = (y0<<16 | y1); addr_row = (y0<<16 | y1);
} }
#endif
DC_C; tft_Write_8(TFT_RAMWR); DC_C; tft_Write_8(TFT_RAMWR);
DC_D; DC_D;
@ -2696,6 +2704,13 @@ void TFT_eSPI::drawPixel(int32_t x, int32_t y, uint32_t color)
begin_tft_write(); begin_tft_write();
#ifdef MULTI_TFT_SUPPORT
No optimisation
DC_C; tft_Write_8(TFT_CASET);
DC_D; tft_Write_32D(x);
DC_C; tft_Write_8(TFT_PASET);
DC_D; tft_Write_32D(y);
#else
// No need to send x if it has not changed (speeds things up) // No need to send x if it has not changed (speeds things up)
if (addr_col != (x<<16 | x)) { if (addr_col != (x<<16 | x)) {
DC_C; tft_Write_8(TFT_CASET); DC_C; tft_Write_8(TFT_CASET);
@ -2709,6 +2724,7 @@ void TFT_eSPI::drawPixel(int32_t x, int32_t y, uint32_t color)
DC_D; tft_Write_32D(y); DC_D; tft_Write_32D(y);
addr_row = (y<<16 | y); addr_row = (y<<16 | y);
} }
#endif
DC_C; tft_Write_8(TFT_RAMWR); DC_C; tft_Write_8(TFT_RAMWR);
DC_D; tft_Write_16(color); DC_D; tft_Write_16(color);