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Permit D6 (MISO) to be used for DC to save on pins

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Using D6 (MISO) for the DC line is not recommended as transaction support and TFT reads may cause it to become and input!
However if a hardware setup has no other pins spare, then this is an option that can be tried.
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Bodmer
2017-03-11 16:38:29 +00:00
committed by GitHub
parent abd9451048
commit 05a9aee260
1 changed files with 4 additions and 0 deletions
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TFT_eSPI.cpp
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@@ -151,6 +151,10 @@ void TFT_eSPI::init(void)
// SPI1U1 |= SPIUSIO; // Single I/O pin on MOSI (bi-directional) - not tested // SPI1U1 |= SPIUSIO; // Single I/O pin on MOSI (bi-directional) - not tested
// Set to output once again incase D6 (MISO) is used for DC
digitalWrite(TFT_DC, HIGH); // Data/Command high = data mode
pinMode(TFT_DC, OUTPUT);
// toggle RST low to reset // toggle RST low to reset
#ifdef TFT_RST #ifdef TFT_RST
if (TFT_RST >= 0) { if (TFT_RST >= 0) {