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Add support for SONY SPRESENSE board #431

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Add support for SONY SPRESENSE board #431

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32 changes: 32 additions & 0 deletions Adafruit_SPITFT.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1037,6 +1037,17 @@ void Adafruit_SPITFT::writePixels(uint16_t *colors, uint32_t len, bool block,
spi_write_blocking(pi_spi, (uint8_t *)colors, len * 2);
}
return;
#elif defined(ARDUINO_ARCH_SPRESENSE)
if (connection == TFT_HARD_SPI) {
if (!bigEndian) {
swapBytes(colors, len); // convert little-to-big endian for display
}
hwspi._spi->send16(colors, len);
if (!bigEndian) {
swapBytes(colors, len); // big-to-little endian to restore pixel buffer
}
return;
}
#elif defined(USE_SPI_DMA) && \
(defined(__SAMD51__) || defined(ARDUINO_SAMD_ZERO))
if ((connection == TFT_HARD_SPI) || (connection == TFT_PARALLEL)) {
Expand Down Expand Up @@ -1219,6 +1230,25 @@ void Adafruit_SPITFT::writeColor(uint16_t color, uint32_t len) {
}
return;
}
#elif defined(ARDUINO_ARCH_SPRESENSE)
if (connection == TFT_HARD_SPI) {
#define SPI_MAX_PIXELS_AT_ONCE 1024
static uint16_t temp[SPI_MAX_PIXELS_AT_ONCE];
uint16_t bufLen =
(len < SPI_MAX_PIXELS_AT_ONCE) ? len : SPI_MAX_PIXELS_AT_ONCE;
uint16_t xferLen;

for (uint32_t t = 0; t < bufLen; t++) {
temp[t] = color;
}
// Issue pixels in blocks from temp buffer
while (len) { // While pixels remain
xferLen = (bufLen < len) ? bufLen : len; // How many this pass?
writePixels((uint16_t *)temp, xferLen, true, true);
len -= xferLen;
}
return;
}
#elif defined(ARDUINO_NRF52_ADAFRUIT) && \
defined(NRF52840_XXAA) // Adafruit nRF52840 use SPIM3 DMA at 32Mhz
// at most 2 scan lines
Expand Down Expand Up @@ -2426,6 +2456,8 @@ void Adafruit_SPITFT::SPI_WRITE16(uint16_t w) {
spi_inst_t *pi_spi = hwspi._spi == &SPI ? spi0 : spi1;
w = __builtin_bswap16(w);
spi_write_blocking(pi_spi, (uint8_t *)&w, 2);
#elif defined(ARDUINO_ARCH_SPRESENSE)
hwspi._spi->transfer16(w);
#else
// MSB, LSB because TFTs are generally big-endian
hwspi._spi->transfer(w >> 8);
Expand Down