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dma working again w/ dynamic objects

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ra8875
Jorj Bauer 1 year ago
parent 0a2fb1aeee
commit 900e242adc
11 changed files with 87 additions and 60 deletions
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7
README.md
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@ -85,10 +85,9 @@ You'll also need the ILI9341_t3n library from
https://github.com/KurtE/ILI9341_t3n/
I'm using it at tag f1bfb81825c60e39e011e502fe5c39a04305e1dc - not
because that tag is special, but because that's when I checked out the
repo. I haven't tested newer code and if you have problems, you'll
want to roll back to that tag.
As of this writing, the master branch does not work for Aiie; but the
branch "dma_new_fix" is fine. I'd recommend checking out that branch
if it exists.
# Running (on the Teensy)

1
apple/appledisplay.cpp
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@ -460,7 +460,6 @@ void AppleDisplay::redraw40ColumnText(uint8_t startingY)
// Only draw onscreen locations
if (row >= startingY && col <= 39 && row <= 23) {
const uint8_t *cptr = xlateChar(mmu->readDirect(addr, 0), &invert);
for (uint8_t y2 = 0; y2<8; y2++) {
uint8_t d = *(cptr + y2);
for (uint8_t x2 = 0; x2 < 7; x2++) {

18
physicaldisplay.cpp
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@ -5,24 +5,6 @@
#include "font.h"
const uint16_t loresPixelColors[16] = { 0x0000, // 0 black
0xC006, // 1 magenta
0x0010, // 2 dark blue
0xA1B5, // 3 purple
0x0480, // 4 dark green
0x6B4D, // 5 dark grey
0x1B9F, // 6 med blue
0x0DFD, // 7 light blue
0x92A5, // 8 brown
0xF8C5, // 9 orange
0x9555, // 10 light gray
0xFCF2, // 11 pink
0x07E0, // 12 green
0xFFE0, // 13 yellow
0x87F0, // 14 aqua
0xFFFF // 15 white
};
void PhysicalDisplay::drawCharacter(uint8_t mode, uint16_t x, uint16_t y, char c)
{
int8_t xsize = 8,

14
teensy/ILI9341_wrap.cpp
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@ -60,18 +60,19 @@ bool ILI9341_Wrap::updateScreenAsync(bool update_cont)
void ILI9341_Wrap::drawPixel(int16_t x, int16_t y, uint16_t color)
{
if (x>=320 || y>=240)
return;
frame_buffer[y*ILI9341_WIDTH+x] = color;
}
void ILI9341_Wrap::drawPixel(int16_t x, int16_t y, uint8_t color)
{
frame_buffer[y*ILI9341_WIDTH+x] = _332To565(color);
}
// The 9341 is half the width we need, so this jumps through hoops to
// reduce the resolution in a way that's reasonable by blending pixels
void ILI9341_Wrap::cacheApplePixel(uint16_t x, uint16_t y, uint16_t color)
{
if (x>=560 || y>=192)
return;
if (x&1) {
uint16_t origColor =frame_buffer[(y+SCREENINSET_9341_Y)*ILI9341_WIDTH+(x>>1)+SCREENINSET_9341_X];
if (g_displayType == m_blackAndWhite) {
@ -98,6 +99,9 @@ void ILI9341_Wrap::cacheApplePixel(uint16_t x, uint16_t y, uint16_t color)
void ILI9341_Wrap::cacheDoubleWideApplePixel(uint16_t x, uint16_t y, uint16_t color16)
{
if (x>=280 || y>=192)
return;
frame_buffer[(y+SCREENINSET_9341_Y)*ILI9341_WIDTH + (x) + SCREENINSET_9341_X] = color16;
}

1
teensy/ILI9341_wrap.h
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@ -27,7 +27,6 @@ class ILI9341_Wrap : public BaseDisplay {
virtual bool updateScreenAsync(bool update_cont = false);
virtual void drawPixel(int16_t x, int16_t y, uint16_t color);
virtual void drawPixel(int16_t x, int16_t y, uint8_t color);
virtual void cacheApplePixel(uint16_t x, uint16_t y, uint16_t color);
virtual void ILI9341_Wrap::cacheDoubleWideApplePixel(uint16_t x, uint16_t y, uint16_t color16);

39
teensy/RA8875_t4.cpp
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@ -87,6 +87,10 @@
* https://github-wiki-see.page/m/TeensyUser/doc/wiki/Memory-Mapping
*/
// Static DMA objects that we need in RAM1
DMASetting _dmasettings[12];
DMAChannel _dmatx;
// at 8bpp, each pixel is 1 byte
#define COUNT_PIXELS_WRITE (RA8875_WIDTH * RA8875_HEIGHT)
@ -282,6 +286,8 @@ void RA8875_t4::_initializeTFT()
void RA8875_t4::setFrameBuffer(uint8_t *frame_buffer)
{
Serial.print("fb 0x");
Serial.println((uint32_t)frame_buffer, HEX);
_pfbtft = frame_buffer;
_dma_state &= ~RA8875_DMA_INIT;
}
@ -382,7 +388,10 @@ bool RA8875_t4::updateScreenAsync(bool update_cont)
_dma_state &= ~RA8875_DMA_CONT;
}
_dma_state |= RA8875_DMA_ACTIVE;
// Make sure the dma settings are flushed. Otherwise bad things happen.
if ((uint32_t)_dmasettings >= 0x20200000u)
arm_dcache_flush(_dmasettings, sizeof(DMASetting)*12); // FIXME constant
return true;
}
@ -399,18 +408,27 @@ uint8_t _color16To8bpp(uint16_t color) {
void RA8875_t4::drawPixel(int16_t x, int16_t y, uint16_t color)
{
// FIXME: bounds checking
if (x>=800 || y>=480) {
Serial.print("^ ");
Serial.print(x);
Serial.print(" ");
Serial.println(y);
return;
}
_pfbtft[y*RA8875_WIDTH+x] = _color16To8bpp(color);
}
void RA8875_t4::drawPixel(int16_t x, int16_t y, uint8_t color)
{
// FIXME: bounds checking
_pfbtft[y*RA8875_WIDTH+x] = color;
}
void RA8875_t4::cacheApplePixel(uint16_t x, uint16_t y, uint16_t color)
{
if (x>=560 || y>=192) {
Serial.print("! ");
Serial.print(x);
Serial.print(" ");
Serial.println(y);
return;
}
// The 8875 display doubles vertically
uint c8 = _565To332(color);
for (int yoff=0; yoff<2; yoff++) {
@ -420,6 +438,11 @@ void RA8875_t4::cacheApplePixel(uint16_t x, uint16_t y, uint16_t color)
void RA8875_t4::cacheDoubleWideApplePixel(uint16_t x, uint16_t y, uint16_t color16)
{
if (x>=280 || y>=192) {
Serial.println("@");
return;
}
// The RA8875 doubles Apple's pixels.
for (int yoff=0; yoff<2; yoff++) {
for (int xoff=0; xoff<2; xoff++) {

11
teensy/RA8875_t4.h
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@ -37,7 +37,6 @@ class RA8875_t4 : public BaseDisplay {
virtual bool updateScreenAsync(bool update_cont = false);
virtual void drawPixel(int16_t x, int16_t y, uint16_t color);
virtual void drawPixel(int16_t x, int16_t y, uint8_t color);
virtual void cacheApplePixel(uint16_t x, uint16_t y, uint16_t color16);
virtual void cacheDoubleWideApplePixel(uint16_t x, uint16_t y, uint16_t color16);
@ -81,9 +80,13 @@ private:
uint32_t _spi_clock_read;
uint32_t _clock; // current clock, used in starting transactions (b/c we have to slow down sometimes)
// DMA stuff
DMASetting _dmasettings[12];
DMAChannel _dmatx;
// DMA stuff. The _dmasettings[] and _dmatx can't be member
// variables. If they are, then the object will work if it's
// statically allocated; but dynamically allocated RA8875_t4 objects
// would be malloc()'d in RAM2, which is a problem for DMA.
// So instead they're static globals in the module.
// DMASetting _dmasettings[12];
// DMAChannel _dmatx;
uint32_t _spi_fcr_save;
uint8_t *_pfbtft;
volatile uint8_t _dma_state;

3
teensy/basedisplay.h
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@ -1,8 +1,6 @@
#ifndef __BASE_DISPLAY_H
#define __BASE_DISPLAY_H
const uint16_t loresPixelColors[16];
#define RGBto565(r,g,b) ((((r) & 0xF8) << 8) | (((g) & 0xFC) << 3) | ((b) >> 3))
#define _565toR(c) ( ((c) & 0xF800) >> 8 )
#define _565toG(c) ( ((c) & 0x07E0) >> 3 )
@ -30,7 +28,6 @@ class BaseDisplay {
virtual bool updateScreenAsync(bool update_cont = false) = 0;
virtual void drawPixel(int16_t x, int16_t y, uint16_t color) = 0;
virtual void drawPixel(int16_t x, int16_t y, uint8_t color) = 0;
// Apple interface methods
virtual void cacheApplePixel(uint16_t x, uint16_t y, uint16_t color) = 0;

51
teensy/teensy-display.cpp
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@ -25,6 +25,24 @@ uint16_t *dmaBuffer16 = NULL;
#define PIN_MISO 1
#define PIN_SCK 27
const uint16_t loresPixelColors[16] = { 0x0000, // 0 black
0xC006, // 1 magenta
0x0010, // 2 dark blue
0xA1B5, // 3 purple
0x0480, // 4 dark green
0x6B4D, // 5 dark grey
0x1B9F, // 6 med blue
0x0DFD, // 7 light blue
0x92A5, // 8 brown
0xF8C5, // 9 orange
0x9555, // 10 light gray
0xFCF2, // 11 pink
0x07E0, // 12 green
0xFFE0, // 13 yellow
0x87F0, // 14 aqua
0xFFFF // 15 white
};
TeensyDisplay::TeensyDisplay()
{
driveIndicator[0] = driveIndicator[1] = false;
@ -38,11 +56,15 @@ TeensyDisplay::TeensyDisplay()
pinMode(11, INPUT);
digitalWrite(11, HIGH); // turn on pull-up
if (digitalRead(11)) {
if (!digitalRead(11)) {
// Default: use older, smaller but faster, ILI display if pin 11 is not connected to ground
Serial.println(" using ILI9341 display");
dmaBuffer16 = (uint16_t *)malloc((320*240)*2+32); // malloc() happens in the DMAMEM area (RAM2) FIXME *** CONSTANTS -- and does the +32 align properly?
dmaBuffer16 = (uint16_t *)malloc((320*240)*2+32); // malloc() happens in the DMAMEM area (RAM2)
// And we have to be sure dmaBuffer16 is 32-byte aligned for DMA purposes
// so we intentionally alloc'd an extra 32 bytes in order to shift here
dmaBuffer16 = (uint16_t *)(((uintptr_t)dmaBuffer16 + 32) &
~((uintptr_t)(31)));
tft = new ILI9341_Wrap(PIN_CS, PIN_RST, PIN_MOSI, PIN_SCK, PIN_MISO, PIN_DC);
@ -60,8 +82,12 @@ TeensyDisplay::TeensyDisplay()
// If someone grounded pin 11, then use the new RA8875 display
Serial.println(" using RA8875 display");
dmaBuffer = (uint8_t *)malloc(800*480+32); // malloc() happens in the DMAMEM area (RAM2) FIXME *** CONSTANTS -- and does the +32 align properly?
dmaBuffer = (uint8_t *)malloc(800*480+32); // malloc() happens in the DMAMEM area (RAM2)
// And we have to be sure dmaBuffer is 32-byte aligned for DMA purposes
// so we intentionally alloc'd an extra 32 bytes in order to shift here
dmaBuffer = (uint8_t *)(((uintptr_t)dmaBuffer + 32) &
~((uintptr_t)(31)));
tft = new RA8875_t4(PIN_CS, PIN_RST, PIN_MOSI, PIN_SCK, PIN_MISO);
// Load the 8875 images
@ -79,16 +105,17 @@ TeensyDisplay::TeensyDisplay()
tft->setFrameBuffer((uint8_t *)dmaBuffer);
}
Serial.print("before ");
Serial.println((uint32_t)tft);
Serial.print("after ");
Serial.println((uint32_t)tft);
tft->fillWindow();
Serial.println("finished filling");
}
TeensyDisplay::~TeensyDisplay()
{
/* FIXME: we mucked with these after alloc to align them, so we can't free them from their offset addresses; need to keep track of the original malloc'd address instead
if (dmaBuffer)
free(dmaBuffer);
if (dmaBuffer16)
free(dmaBuffer16);
*/
}
// Take one of the abstracted image constants, figure out which one it
@ -125,7 +152,6 @@ void TeensyDisplay::drawImageOfSizeAt(const uint8_t *img,
uint16_t wherex, uint16_t wherey)
{
uint8_t r, g, b;
uint8_t *p = img;
for (uint16_t y=0; y<sizey; y++) {
for (uint16_t x=0; x<sizex; x++) {
@ -183,11 +209,6 @@ void TeensyDisplay::cachePixel(uint16_t x, uint16_t y, uint8_t color)
tft->cacheApplePixel(x,y,loresPixelColors[color]);
}
void TeensyDisplay::cacheDoubleWidePixel(uint16_t x, uint16_t y, uint16_t color16)
{
tft->cacheDoubleWideApplePixel(x, y, color16);
}
// "DoubleWide" means "please double the X because I'm in low-res
// width mode".
void TeensyDisplay::cacheDoubleWidePixel(uint16_t x, uint16_t y, uint8_t color)

1
teensy/teensy-display.h
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@ -24,7 +24,6 @@ class TeensyDisplay : public PhysicalDisplay {
virtual void drawUIImage(uint8_t imageIdx);
virtual void drawImageOfSizeAt(const uint8_t *img, uint16_t sizex, uint16_t sizey, uint16_t wherex, uint16_t wherey);
void cacheDoubleWidePixel(uint16_t x, uint16_t y, uint16_t color16);
virtual void cacheDoubleWidePixel(uint16_t x, uint16_t y, uint8_t color);
virtual void cachePixel(uint16_t x, uint16_t y, uint8_t color);

1
teensy/teensy.ino
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@ -358,6 +358,7 @@ void runDisplay(uint32_t now)
}
if (!g_biosInterrupt) {
// FIXME this needs some love. It could be efficient, but parts are removed, so it's doing duplicative work.
g_ui->blit();
g_vm->vmdisplay->lockDisplay();
if (g_vm->vmdisplay->needsRedraw()) { // necessary for the VM to redraw

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