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Issue #505

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ILI9488 not compliant to datasheet with extra clock pulse?
This commit is contained in:
Bodmer
2020-01-02 00:50:49 +00:00
committed by GitHub
parent 962cec85aa
commit 3115285b05
1 changed files with 6 additions and 6 deletions
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12
TFT_eSPI.cpp
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@@ -906,7 +906,7 @@ void TFT_eSPI::readRect(int32_t x, int32_t y, int32_t w, int32_t h, uint16_t *da
uint32_t len = w * h;
while (len--) {
#if !defined (ILI9488_DRIVER)
//#if !defined (ILI9488_DRIVER)
// Read the 3 RGB bytes, colour is actually only in the top 6 bits of each byte
// as the TFT stores colours as 18 bits
@@ -914,15 +914,15 @@ void TFT_eSPI::readRect(int32_t x, int32_t y, int32_t w, int32_t h, uint16_t *da
uint8_t g = tft_Read_8();
uint8_t b = tft_Read_8();
#else
//#else
// The 6 colour bits are in LS 6 bits of each byte but we do not include the extra clock pulse
// so we use a trick and mask the middle 6 bits of the byte, then only shift 1 place left
uint8_t r = (tft_Read_8()&0x7E)<<1;
uint8_t g = (tft_Read_8()&0x7E)<<1;
uint8_t b = (tft_Read_8()&0x7E)<<1;
// uint8_t r = (tft_Read_8()&0x7E)<<1;
// uint8_t g = (tft_Read_8()&0x7E)<<1;
// uint8_t b = (tft_Read_8()&0x7E)<<1;
#endif
//#endif
// Swapped colour byte order for compatibility with pushRect()
*data++ = (r & 0xF8) | (g & 0xE0) >> 5 | (b & 0xF8) << 5 | (g & 0x1C) << 11;