uGFX/ugfx
2
0
Fork 0
Code Issues 2 Pull Requests Projects Releases Wiki Activity

DMA fixed and tested for SSD1963

Browse Source
This commit is contained in:
mobyfab 2012-09-17 22:51:02 +02:00
parent ac228656ae
commit 4991834cbb
1 changed files with 24 additions and 43 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
drivers/gdisp/SSD1963/gdisp_lld.c
View File

@ -186,8 +186,10 @@ bool_t GDISP_LLD(init)(void) {
#if defined(LCD_USE_FSMC)
#if defined(LCD_USE_DMA)
dmaStreamAllocate(LCD_DMA_STREAM, 0, NULL, NULL);
#endif //#ifdef LCD_USE_DMA
if (dmaStreamAllocate(LCD_DMA_STREAM, 0, NULL, NULL)) chSysHalt();
dmaStreamSetMemory0(LCD_DMA_STREAM, &LCD_RAM);
dmaStreamSetMode(LCD_DMA_STREAM, STM32_DMA_CR_PL(0) | STM32_DMA_CR_PSIZE_HWORD | STM32_DMA_CR_MSIZE_HWORD | STM32_DMA_CR_DIR_M2M);
#endif
#if defined(STM32F1XX) || defined(STM32F3XX)
/* FSMC setup for F1/F3 */
@ -384,23 +386,14 @@ void GDISP_LLD(drawpixel)(coord_t x, coord_t y, color_t color) {
GDISP_LLD(setwindow)(x, y, x+cx-1, y+cy-1);
GDISP_LLD(writestreamstart)();
#if defined(LCD_USE_DMA)
if (area > 1000) { // Do not use DMA for small areas
#if defined(LCD_USE_FSMC) && defined(LCD_USE_DMA)
uint16_t i, splitarea;
dmaStreamSetPeripheral(LCD_DMA_STREAM, &color);
dmaStreamSetMemory0(LCD_DMA_STREAM, LCD_RAM);
uint32_t i;
uint16_t splitarea;
for (i = (area/65535)+1; i > 0; i--) {
if (i <= 1) splitarea = area%65535;
else splitarea = 65535;
if (i <= 1) splitarea = area%65535; else splitarea = 65535;
dmaStreamSetTransactionSize(LCD_DMA_STREAM, splitarea);
dmaStreamSetMode(LCD_DMA_STREAM, STM32_DMA_CR_PSIZE_HWORD | STM32_DMA_CR_MSIZE_HWORD | STM32_DMA_CR_DIR_M2M | STM32_DMA_CR_EN);
while ((LCD_DMA_STREAM)->stream->NDTR > 0) chThdSleepMilliseconds(5);
}
}
else {
for(index = 0; index < area; index++)
GDISP_LLD(writedata)(color);
dmaStreamEnable(LCD_DMA_STREAM);
dmaWaitCompletion(LCD_DMA_STREAM);
}
#else
for(index = 0; index < area; index++)
@ -444,33 +437,21 @@ void GDISP_LLD(drawpixel)(coord_t x, coord_t y, color_t color) {
buffer += srcx + srcy * srccx;
#if defined(LCD_USE_DMA)
#if defined(LCD_USE_FSMC) && defined(LCD_USE_DMA)
uint32_t area = cx*cy;
if (area > 1000) { // Do not use DMA for small areas
uint16_t i, splitarea;
dmaStreamSetPeripheral(LCD_DMA_STREAM, buffer);
dmaStreamSetMemory0(LCD_DMA_STREAM, LCD_RAM);
uint32_t i;
uint16_t splitarea;
for (i = (area/65535)+1; i > 0; i--) {
if (i <= 1) splitarea = area%65535;
else splitarea = 65535;
if (i <= 1) splitarea = area%65535; else splitarea = 65535;
dmaStreamSetTransactionSize(LCD_DMA_STREAM, splitarea);
dmaStreamSetMode(LCD_DMA_STREAM, STM32_DMA_CR_PSIZE_HWORD | STM32_DMA_CR_MSIZE_HWORD | STM32_DMA_CR_PINC | STM32_DMA_CR_DIR_M2M | STM32_DMA_CR_EN);
while ((LCD_DMA_STREAM)->stream->NDTR > 0) chThdSleepMilliseconds(5);
}
}
else {
for(; y < endy; y++, buffer += lg)
for(x=srcx; x < endx; x++)
GDISP_LLD(writedata)(*buffer++);
dmaStreamEnable(LCD_DMA_STREAM);
dmaWaitCompletion(LCD_DMA_STREAM);
}
#else
for(; y < endy; y++, buffer += lg)
for(x=srcx; x < endx; x++)
GDISP_LLD(writedata)(*buffer++);
#endif //#ifdef LCD_USE_DMA
}
#endif