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everything goes through DMA

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This commit is contained in:
Jorj Bauer 2022-01-20 18:23:31 -05:00
parent 17752f0c12
commit fac84b53b0
2 changed files with 3 additions and 40 deletions
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41
teensy/RA8875_t4.cpp
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@ -410,32 +410,8 @@ bool RA8875_t4::updateScreenAsync(bool update_cont)
void RA8875_t4::fillWindow(uint16_t color)
{
int x0=0, y0=0;
int x1=RA8875_WIDTH-1,y1=RA8875_HEIGHT-1;
//X0
_writeRegister(RA8875_DLHSR0, x0 & 0xFF);
_writeRegister(RA8875_DLHSR0 + 1,x0 >> 8);
//Y0
_writeRegister(RA8875_DLVSR0, y0 & 0xFF);
_writeRegister(RA8875_DLVSR0 + 1,y0 >> 8);
//X1
_writeRegister(RA8875_DLHER0, x1 & 0xFF);
_writeRegister(RA8875_DLHER0 + 1,x1 >> 8);
//Y1
_writeRegister(RA8875_DLVER0, y1 & 0xFF);
_writeRegister(RA8875_DLVER0 + 1,y1 >> 8);
// Set the color
_writeRegister(RA8875_FGCR0,_565toR(color) >> 2); // 5 bits red -> 3 bits red
_writeRegister(RA8875_FGCR0+1,_565toG(color) >> 3); // 6 bits green -> 3 bits green
_writeRegister(RA8875_FGCR0+2,_565toB(color) >> 3); // 5 bits blue -> 2 bits blue
// Send fill
writeCommand(RA8875_DCR); // draw control register
_writeData(0xB0); // %1011 0000 == start draw; stop circle; fill shape; draw square; draw square (yes two different bits for draw square)
// Wait for completion (when DCR_LINESQUTRI_STATUS bit it set in read result, before TIMEOUT happens)
_waitPoll(RA8875_DCR, RA8875_DCR_LINESQUTRI_STATUS, _RA8875_WAITPOLL_TIMEOUT_DCR_LINESQUTRI_STATUS);
// FIXME: reduce color & fill appropriately
memset(_pfbtft, RA8875_WIDTH*RA8875_HEIGHT, 0);
}
// *** Remove this and convert to native 8-bit? Or make it inline?
@ -446,18 +422,7 @@ uint8_t _color16To8bpp(uint16_t color) {
void RA8875_t4::drawPixel(int16_t x, int16_t y, uint16_t color)
{
// FIXME: bounds checking
// Set Y
_writeRegister(RA8875_CURV0, y & 0xFF); // cursor vertical location
_writeRegister(RA8875_CURV0+1, y >> 8);
// Set X
_writeRegister(RA8875_CURH0, x & 0xFF); // cursor horiz location
_writeRegister(RA8875_CURH0+1, (x >> 8));
// Send pixel data
writeCommand(RA8875_MRWC); // write to wherever MWCR1 says (which we expect to be default graphics layer)
// writeData16(color);
_writeData(_color16To8bpp(color));
_pfbtft[y*RA8875_WIDTH+x] = _color16To8bpp(color);
}
uint32_t RA8875_t4::frameCount()

2
teensy/RA8875_t4.h
View File

@ -1,8 +1,6 @@
#ifndef _RA8875_T4_H
#define _RA8875_T4_H
#define SCREEN_DMA_NUM_SETTINGS 3
#include <Arduino.h>
#include <SPI.h>
#include <DMAChannel.h>