Цитата(M_Andrey @ Apr 5 2011, 15:11)
И после этого дисплей все еще работает, максимальная частота вашего дисплея вряд-ли может быть более 25МГц, а тут превышение в три раза. Приведите всю инициализацию дисплея.
Уточнение. Где-то значит что-то ещё делиться, так как DOTCLK = 4 MHz с хвостиком.
Осцилографом натыкал.
Вроде ка бы обновление порядочное. Шина паралельная 18 бит.
И вот что я хаметил, если с SD грузить однородная картинка, то всё норма.
Нарисовал пару квадратиков на ней, мерцание заметно только на одном, который такого тёмно-зелёного цвета. Я вот сейчас вообще в шоке.
Всё нормально кроме одного маленького квадратика.
В чём может быть ароблема???
CODE
#define NULL 0
#define MUL 72/8
#define ACTIVATE_CS FIO0CLR = 0x10000
#define DEACTIVATE_CS FIO0SET = 0x10000
#define SET_RS FIO0SET = 0x80000
#define RESET_RS FIO0CLR = 0x80000
pInt32U a;
extern void delay(int cnt);
unsigned long buf[4]={0x56FF,0x7447,8098,87};
spiSend(BYTE data)
{
unsigned int failsafe;
S0SPDR = data;
failsafe = 0;
while(((S0SPSR & 0x80) == 0) && (failsafe < 5000))
failsafe++;
if(failsafe >= 5000)
{
S0SPCCR = 8;
S0SPCR = 0x38;
}
}
void writeToReg(WORD addr, WORD data)
{
RESET_RS;
ACTIVATE_CS;
spiSend(0);
spiSend(addr & 0xff);
DEACTIVATE_CS;
SET_RS;
ACTIVATE_CS;
spiSend(data >> 8);
spiSend(data & 0xff);
DEACTIVATE_CS;
RESET_RS;
ACTIVATE_CS;
spiSend(0);
spiSend(0x22);
DEACTIVATE_CS;
}
void lcd_hw_init(void)
{
//Turn on power to LCD
FIO2DIR |= 0x1;
FIO2SET = 0x1;
//set P1.18 as PWM output (PWM1.1, second alternative function)
PINSEL3 &= 0xFFFFFFCF;
PINSEL3 |= 0x00000020;
PWM1PR = 0x00; //no prescaling
PWM1MCR = 0x02; //reset counter if MR0 match
PWM1MR0 = 0x3000; //period time equal about 5 ms
PWM1MR1 = 0x1000;
PWM1LER = 0x03; //latch MR0 and MR1
PWM1PCR = 0x0200; //enable PWMENA1
PWM1TCR = 0x09; //enable counter and PWM
FIO0DIR |= 0x90000;
FIO0SET = 0x90000;
PINSEL10 = 0;
PINSEL0 = (PINSEL0 & 0xFFF000FF) | 0x00055500;
PINSEL3 = (PINSEL3 & 0xF00000FF) | 0x05555500;
PINSEL4 = (PINSEL4 & 0xF0300000) | 0x054FFFFF;
PINSEL9 = (PINSEL9 & 0xF0FFFFFF) | 0x0A000000;
PINSEL11 = 0x0000000d;
}
void lcd_display_init(void)
{
writeToReg (0x00,0x0001);
delay(20000);
writeToReg (0x03,0xA2A4);
writeToReg (0x0C,0x0004);
writeToReg (0x0D,0x0308);
writeToReg (0x0E,0x3000);
delay(50000);
writeToReg (0x1E,0x00AF);
writeToReg (0x01,0x2B3F);
writeToReg (0x02,0x0600);
writeToReg (0x10,0x0000);
writeToReg (0x07,0x0233);
writeToReg (0x0B,0x0039);
writeToReg (0x0F,0x0000);
delay(50000);
writeToReg (0x30,0x0707);
writeToReg (0x31,0x0204);
writeToReg (0x32,0x0204);
writeToReg (0x33,0x0502);
writeToReg (0x34,0x0507);
writeToReg (0x35,0x0204);
writeToReg (0x36,0x0204);
writeToReg (0x37,0x0502);
writeToReg (0x3A,0x0302);
writeToReg (0x3B,0x0302);
writeToReg (0x23,0x0000);
writeToReg (0x24,0x0000);
writeToReg (0x48,0x0000);
writeToReg (0x49,0x013F);
writeToReg (0x4A,0x0000);
writeToReg (0x4B,0x0000);
writeToReg (0x41,0x0000);
writeToReg (0x42,0x0000);
writeToReg (0x44,0xEF00);
writeToReg (0x45,0x0000);
writeToReg (0x46,0x013F);
delay(50000);
writeToReg (0x44,0xEF00);
writeToReg (0x45,0x0000);
writeToReg (0x4E,0x0000);
writeToReg (0x4F,0x0000);
writeToReg (0x46,0x013F);
}
void lcd_ctrl_init(tLcdParams* pParams)
{
DWORD regValue = 0;
// disable the display
LCD_CTRL &= ~LCD_CTRL_REG_EN;
// ppl value to set = ppl / 16 -1 (2:7)
// hsw value to set = hsw - 1 (8:15)
// hfp value to set = hfp - 1 (16:23)
// hbp value to set = hbp - 1 (24:31)
regValue= ( ((((pParams->ppl/16)-1)&0x3F) << 2)
| (( (pParams->hsw-1) &0xFF) << 8)
| (( (pParams->hfp-1) &0xFF) << 16)
| (( (pParams->hbp-1) &0xFF) << 24) );
LCD_TIMH = regValue;
regValue =((((pParams->lpp-1) &0x3FF) << 0)
| (((pParams->vsw-1) &0x03F) << 10)
| (((pParams->vfp-1) &0x0FF) << 16)
| (((pParams->vbp-1) &0x0FF) << 24) );
LCD_TIMV = regValue;
regValue = 0;
if(pParams->acb != 0)
{
regValue = (((pParams->acb-1) & 0x1F) << 6);
}
if(pParams->ioe != 0)
{
regValue |= LCD_POL_REG_IOE;
}
if(pParams->ipc != 0)
{
regValue |= LCD_POL_REG_IPC;
}
if(pParams->ihs != 0)
{
regValue |= LCD_POL_REG_IHS;
}
if(pParams->ivs != 0)
{
regValue |= LCD_POL_REG_IVS;
}
// clocks per line (CPL)
switch(pParams->panelType)
{
case LCD_MONO_4: regValue |= ((((pParams->ppl / 4)-1) & 0x3FF) << 16); break;
case LCD_MONO_8: regValue |= ((((pParams->ppl / 8)-1) & 0x3FF) << 16); break;
case LCD_CSTN: regValue |= (((((pParams->ppl * 3)/8)-1) & 0x3FF) << 16); break;
case LCD_TFT:
case LCD_ADTFT:
case LCD_HRTFT:
default: regValue |= (((pParams->ppl-1) & 0x3FF) << 16);
}
// panel clock divisor, lower bits
regValue |= ((17)-2)&0x0F; // TODO: should be calculated from fcclk
//regValue
LCD_POL = regValue;
// skip line end control
LCD_LE = 0;
// disable interrupts
LCD_INTMSK = 0;
// default 16 bits per pixel
regValue = LCD_CTRL_REG_BPP24;
// default BGR
regValue |= LCD_CTRL_REG_BGR;
switch(pParams->panelType)
{
case LCD_ADTFT:
case LCD_HRTFT:
case LCD_TFT: regValue |= LCD_CTRL_REG_TFT; break;
case LCD_MONO_4: regValue |= LCD_CTRL_REG_BW_MONO; break;
case LCD_MONO_8: regValue |= (LCD_CTRL_REG_MONO8 | LCD_CTRL_REG_BW_MONO); break;
case LCD_CSTN: break;
default: break;
}
if(pParams->dp == 1)
{
regValue |= LCD_CTRL_REG_DUAL;
}
LCD_CTRL = regValue;
// 0 = divide by 1
LCD_CFG = 0;
}
/******************************************************************************
* Implementation of public functions
*****************************************************************************/
void
lcdSetColorFormat(tColorFormat format)
{
switch(format)
{
case COLOR_FORMAT_RGB:
LCD_CTRL &= ~LCD_CTRL_REG_BGR;
break;
case COLOR_FORMAT_BGR:
LCD_CTRL |= LCD_CTRL_REG_BGR;
break;
default:
// ERROR
break;
}
}
void lcdSetBacklight(BYTE percent)
{
PWM1MR1 = ((unsigned long)0x3000 * (unsigned long)(100-percent)) / (unsigned long)100;
PWM1LER = 0x02;
}
void
lcdSetBpp(tLcdBpp bpp)
{
LCD_CTRL &= 0xfffffff1;
switch (bpp)
{
case LCD_BPP1:
LCD_CTRL |= LCD_CTRL_REG_BPP1;
break;
case LCD_BPP2:
LCD_CTRL |= LCD_CTRL_REG_BPP2;
break;
case LCD_BPP4:
LCD_CTRL |= LCD_CTRL_REG_BPP4;
break;
case LCD_BPP8:
LCD_CTRL |= LCD_CTRL_REG_BPP8;
break;
case LCD_BPP16:
LCD_CTRL |= LCD_CTRL_REG_BPP16;
break;
case LCD_BPP24:
LCD_CTRL |= LCD_CTRL_REG_BPP24;
break;
case LCD_BPP16_565:
LCD_CTRL |= LCD_CTRL_REG_BPP16_565;
break;
case LCD_BPP12_444:
LCD_CTRL |= LCD_CTRL_REG_BPP12_444;
break;
}
}
void
lcdTurnOn(void)
{
// enable LCD
LCD_CTRL |= LCD_CTRL_REG_EN;
// power on
LCD_CTRL |= LCD_CTRL_REG_PWR;
delay(5000);
//lcd_display_init();
lcdSetBacklight(100);
}
void
lcdInit(tLcdParams* pParams)
{
unsigned int i;
//char *d;
lcd_hw_init();
a=(pInt32U)0xA0000000; //óêàçàòåëü íà âíåøíþþ ïàìÿòü íà áóôåð îáíîâëåíèÿ 320 x 240 x 32 bit
lcdSetBacklight(0);
lcd_ctrl_init(pParams);
// set the frame buffer
LCD_UPBASE = 0xA0000000;
a=(pInt32U)0xFFE10800;
for(i=0;i<256;i++)
*a++=0x00;
//CRSR_CTRL=21;
CRSR_CTRL=0x0; //îòêëþ÷èëè êóðñîð
CRSR_CFG=2;
CRSR_CLIP=0x00001010;
CRSR_XY=0x00000000;
CRSR_PAL0=0x00FF0000;
CRSR_PAL1=0x0000FF00;
}
В майне вызывается lcdInit(&ea_QVGA_v2);
static tLcdParams ea_QVGA_v2 =
{
28, /* Horizontal back porch */
10, /* Horizontal front porch */
2, /* HSYNC pulse width */
240, /* Pixels per line */
3, /* Vertical back porch */
2, /* Vertical front porch */
2, /* VSYNC pulse width */
320, /* Lines per panel */
0, /* Do not invert output enable */
1, /* Invert panel clock */
1, /* Invert HSYNC */
1, /* Invert VSYNC */
1, /* AC bias frequency (not used) */
24, /* Bits per pixel */
LCD_ADTFT, /* LCD panel type */
0, /* Single panel display */
};
Исследования:
0xffff00 - не мирцает
0x000000 - не мирцает
0x008000 - мирцает
0x00ff80 - не мирцает
0x0000ff - не мирцает
0x00ff00 - не мирцает
0x8080ff - мирцает
0xff8040 - мирцает
Сообщение отредактировал IgorKossak - Apr 5 2011, 09:45
Причина редактирования: Длинный код оформляйте тэгами [codebox]
LPC2478 + TFT 320x240 совсем рябит (, вместе с курсором..
Apr 6 2010, 15:52
