meshcore-dev/MeshCore
1
0
Fork 0
mirror of https://github.com/meshcore-dev/MeshCore.git synced 2026-04-20 22:13:47 +00:00
Code Issues Projects Releases Packages Wiki Activity

perf: reuse ST7789 scanline buffer

Browse source
This commit is contained in:
Robert Ekl 2026-03-08 22:32:11 -06:00
parent 2715d3a113
commit c2aae65e79
No known key found for this signature in database
GPG key ID: 224F2A3AEDFDEC85
1 changed files with 55 additions and 37 deletions
Download patch file Download diff file Expand all files Collapse all files

92
src/helpers/ui/ST7789Spi.h
View file

@ -103,9 +103,11 @@ class ST7789Spi : public OLEDDisplay {
int _mosi;
int _clk;
SPIClass * _spi;
SPISettings _spiSettings;
SPISettings _spiSettings;
uint16_t _RGB=0xFFFF;
uint8_t _buffheight;
uint16_t* _pixbuf = nullptr;
uint32_t _pixbuf_capacity = 0;
public:
/* pass _cs as -1 to indicate "do not use CS pin", for cases where it is hard wired low */
ST7789Spi(SPIClass *spiClass,uint8_t _rst, uint8_t _dc, uint8_t _cs, OLEDDISPLAY_GEOMETRY g = GEOMETRY_RAWMODE,uint16_t width=240,uint16_t height=135,int mosi=-1,int miso=-1,int clk=-1) {
@ -121,9 +123,29 @@ class ST7789Spi : public OLEDDisplay {
setGeometry(g,width,height);
}
~ST7789Spi() {
if (_pixbuf != nullptr) {
rtos_free(_pixbuf);
_pixbuf = nullptr;
_pixbuf_capacity = 0;
}
}
bool connect(){
this->_buffheight=displayHeight / 8;
this->_buffheight+=displayHeight % 8 ? 1:0;
if (_pixbuf == nullptr || _pixbuf_capacity < displayWidth) {
uint16_t* new_pixbuf = (uint16_t *)rtos_malloc(sizeof(uint16_t) * displayWidth);
if (new_pixbuf == nullptr) {
_pixbuf_capacity = 0;
return false;
}
if (_pixbuf != nullptr) {
rtos_free(_pixbuf);
}
_pixbuf = new_pixbuf;
_pixbuf_capacity = displayWidth;
}
pinMode(_cs, OUTPUT);
pinMode(_dc, OUTPUT);
//pinMode(_ledA, OUTPUT);
@ -186,27 +208,25 @@ class ST7789Spi : public OLEDDisplay {
set_CS(LOW);
_spi->beginTransaction(_spiSettings);
for (y = minBoundY; y <= maxBoundY; y++)
{
for(int temp = 0; temp<8;temp++)
{
//setAddrWindow(minBoundX,y*8+temp,maxBoundX-minBoundX+1,1);
setAddrWindow(minBoundX,y*8+temp,maxBoundX-minBoundX+1,1);
//setAddrWindow(y*8+temp,minBoundX,1,maxBoundX-minBoundX+1);
uint32_t const pixbufcount = maxBoundX-minBoundX+1;
uint16_t *pixbuf = (uint16_t *)rtos_malloc(2 * pixbufcount);
for (x = minBoundX; x <= maxBoundX; x++)
{
pixbuf[x-minBoundX] = ((buffer[x + y * displayWidth]>>temp)&0x01)==1?_RGB:0;
}
for (y = minBoundY; y <= maxBoundY; y++)
{
for(int temp = 0; temp<8;temp++)
{
//setAddrWindow(minBoundX,y*8+temp,maxBoundX-minBoundX+1,1);
setAddrWindow(minBoundX,y*8+temp,maxBoundX-minBoundX+1,1);
//setAddrWindow(y*8+temp,minBoundX,1,maxBoundX-minBoundX+1);
uint32_t const pixbufcount = maxBoundX-minBoundX+1;
for (x = minBoundX; x <= maxBoundX; x++)
{
_pixbuf[x-minBoundX] = ((buffer[x + y * displayWidth]>>temp)&0x01)==1?_RGB:0;
}
#ifdef ESP_PLATFORM
_spi->transferBytes((uint8_t *)pixbuf, NULL, 2 * pixbufcount);
_spi->transferBytes((uint8_t *)_pixbuf, NULL, 2 * pixbufcount);
#else
_spi->transfer(pixbuf, NULL, 2 * pixbufcount);
_spi->transfer(_pixbuf, NULL, 2 * pixbufcount);
#endif
rtos_free(pixbuf);
}
}
}
}
_spi->endTransaction();
set_CS(HIGH);
@ -214,27 +234,25 @@ class ST7789Spi : public OLEDDisplay {
set_CS(LOW);
_spi->beginTransaction(_spiSettings);
uint8_t x, y;
for (y = 0; y < _buffheight; y++)
{
for(int temp = 0; temp<8;temp++)
{
//setAddrWindow(minBoundX,y*8+temp,maxBoundX-minBoundX+1,1);
//setAddrWindow(minBoundX,y*8+temp,maxBoundX-minBoundX+1,1);
setAddrWindow(y*8+temp,0,1,displayWidth);
uint32_t const pixbufcount = displayWidth;
uint16_t *pixbuf = (uint16_t *)rtos_malloc(2 * pixbufcount);
for (x = 0; x < displayWidth; x++)
{
pixbuf[x] = ((buffer[x + y * displayWidth]>>temp)&0x01)==1?_RGB:0;
}
for (y = 0; y < _buffheight; y++)
{
for(int temp = 0; temp<8;temp++)
{
//setAddrWindow(minBoundX,y*8+temp,maxBoundX-minBoundX+1,1);
//setAddrWindow(minBoundX,y*8+temp,maxBoundX-minBoundX+1,1);
setAddrWindow(y*8+temp,0,1,displayWidth);
uint32_t const pixbufcount = displayWidth;
for (x = 0; x < displayWidth; x++)
{
_pixbuf[x] = ((buffer[x + y * displayWidth]>>temp)&0x01)==1?_RGB:0;
}
#ifdef ESP_PLATFORM
_spi->transferBytes((uint8_t *)pixbuf, NULL, 2 * pixbufcount);
_spi->transferBytes((uint8_t *)_pixbuf, NULL, 2 * pixbufcount);
#else
_spi->transfer(pixbuf, NULL, 2 * pixbufcount);
_spi->transfer(_pixbuf, NULL, 2 * pixbufcount);
#endif
rtos_free(pixbuf);
}
}
}
}
_spi->endTransaction();
set_CS(HIGH);