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Move 0-length check to outside of DMA-specific code

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This commit is contained in:
Phillip Burgess 2018-12-10 13:07:43 -08:00
parent c21979066c
commit 7b04012eaf
1 changed files with 2 additions and 1 deletions
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3
Adafruit_SPITFT.cpp
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@ -509,12 +509,13 @@ void Adafruit_SPITFT::writePixels(uint16_t *colors, uint32_t len) {
/**************************************************************************/
void Adafruit_SPITFT::writeColor(uint16_t color, uint32_t len) {
if(!len) return; // Avoid 0-byte transfers
uint8_t hi = color >> 8, lo = color;
if(_sclk < 0) { // Using hardware SPI
#ifdef USE_SPI_DMA
if(!len) return; // DO NOT ANGER DMA WITH 0-BYTE TRANSFERS!
int i, d, numDescriptors;
if(hi == lo) { // If high & low bytes are same...