lpc17788 با 64MB رم

[alitaroosheh]

سلام

آقا من یه مشکل پیدا کردم با EMC رو LPC1788

از روی شماتیک embest یه مدار زدم که IAR olimex هم مثله اونه...

روی باس کنترلر دو تا mt48lc16m16 گذاشته کسکید شده که جمعا 64MByte رو تشکیل میده

دو تا 16Mega word

ولی توی کانفیگ کردنش هر کاری میکنم نمیشه عدد بزرگتر از 200000 هگز ریخت ... یعنی از بیت 22 به بعد دیتا چرتوپرت مینویسه

این کد پیکره بندی:

void SDRAMInit( void )
{
	volatile uint32_t i;
	volatile unsigned long Dummy;
	LPC_IOCON->P2_16 = 0x21;
	LPC_IOCON->P2_17 = 0x21;
	LPC_IOCON->P2_18 = 0x21;
	
	LPC_IOCON->P2_19 = 0x21;
	
	LPC_IOCON->P2_20 = 0x21;
	LPC_IOCON->P2_24 = 0x21;
	LPC_IOCON->P2_28 = 0x21;
	LPC_IOCON->P2_29 = 0x21;
	LPC_IOCON->P2_30 = 0x21;
	LPC_IOCON->P2_31 = 0x21;
	LPC_IOCON->P3_0 = 0x21;
	LPC_IOCON->P3_1 = 0x21;
	LPC_IOCON->P3_2 = 0x21;
	LPC_IOCON->P3_3 = 0x21;
	LPC_IOCON->P3_4 = 0x21;
	LPC_IOCON->P3_5 = 0x21;
	LPC_IOCON->P3_6 = 0x21;
	LPC_IOCON->P3_7 = 0x21;
	LPC_IOCON->P3_8 = 0x21;
	LPC_IOCON->P3_9 = 0x21;
	LPC_IOCON->P3_10 = 0x21;
	LPC_IOCON->P3_11 = 0x21;
	LPC_IOCON->P3_12 = 0x21;
	LPC_IOCON->P3_13 = 0x21;
	LPC_IOCON->P3_14 = 0x21;
	LPC_IOCON->P3_15 = 0x21;
	LPC_IOCON->P3_16 = 0x21;
	LPC_IOCON->P3_17 = 0x21;
	LPC_IOCON->P3_18 = 0x21;
	LPC_IOCON->P3_19 = 0x21;
	LPC_IOCON->P3_20 = 0x21;
	LPC_IOCON->P3_21 = 0x21;
	LPC_IOCON->P3_22 = 0x21;
	LPC_IOCON->P3_23 = 0x21;
	LPC_IOCON->P3_24 = 0x21;
	LPC_IOCON->P3_25 = 0x21;
	LPC_IOCON->P3_26 = 0x21;
	LPC_IOCON->P3_27 = 0x21;
	LPC_IOCON->P3_28 = 0x21;
	LPC_IOCON->P3_29 = 0x21;
	LPC_IOCON->P3_30 = 0x21;
	LPC_IOCON->P3_31 = 0x21;
	LPC_IOCON->P4_0 = 0x21;
	LPC_IOCON->P4_1 = 0x21;
	LPC_IOCON->P4_2 = 0x21;
	LPC_IOCON->P4_3 = 0x21;
	LPC_IOCON->P4_4 = 0x21;
	LPC_IOCON->P4_5 = 0x21;
	LPC_IOCON->P4_6 = 0x21;
	LPC_IOCON->P4_7 = 0x21;
	LPC_IOCON->P4_8 = 0x21;
	LPC_IOCON->P4_9 = 0x21;
	LPC_IOCON->P4_10 = 0x21;
	LPC_IOCON->P4_11 = 0x21;
	LPC_IOCON->P4_12 = 0x21;
	LPC_IOCON->P4_13 = 0x21;
	LPC_IOCON->P4_14 = 0x21;
	LPC_IOCON->P4_25 = 0x21;
	


LPC_IOCON->P3_22 = 0x21;


// 	
	LPC_SC->PCONP   	|= 0x00000800;
	LPC_SC->EMCDLYCTL   = 0x00001010;
	LPC_EMC->Control 	= 0x00000001;
	LPC_EMC->Config  	= 0x00000000;
	PINSEL_ConfigPin(2,14,1);
	PINSEL_ConfigPin(2,15,1);
	PINSEL_ConfigPin(2,16,1);
	PINSEL_ConfigPin(2,17,1);
	PINSEL_ConfigPin(2,18,1);
	PINSEL_ConfigPin(2,19,1);
	PINSEL_ConfigPin(2,20,1);
	PINSEL_ConfigPin(2,21,1);
  PINSEL_ConfigPin(2,22,1);
	PINSEL_ConfigPin(2,23,1);
	PINSEL_ConfigPin(2,24,1);
	PINSEL_ConfigPin(2,25,1);
	PINSEL_ConfigPin(2,26,1);
	PINSEL_ConfigPin(2,27,1);
	PINSEL_ConfigPin(2,28,1);
	PINSEL_ConfigPin(2,29,1);
	PINSEL_ConfigPin(2,30,1);
	PINSEL_ConfigPin(2,31,1);

	for(i = 0; i < 32; i++)
	{
		PINSEL_ConfigPin(3,i,1);
		PINSEL_ConfigPin(4,i,1);
	}	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	//	EMC_Init();
	// Init SDRAM controller
	LPC_SC->PCONP   	|= 0x00000800;
	/*Init SDRAM controller*/
	LPC_SC->EMCDLYCTL |= (8<<0);
	/*Set data read delay*/
	LPC_SC->EMCDLYCTL |=(8<<8);
	LPC_SC->EMCDLYCTL |= (0x08 <<16);

	LPC_EMC->Control =1;
	LPC_EMC->DynamicReadConfig = 1;
	LPC_EMC->DynamicRasCas0 = 0;
	LPC_EMC->DynamicRasCas0 |=(3<<8);
	LPC_EMC->DynamicRasCas0 |= (3<<0);
	LPC_EMC->DynamicRP = P2C(SDRAM_TRP);
	LPC_EMC->DynamicRAS = P2C(SDRAM_TRAS);
	LPC_EMC->DynamicSREX = P2C(SDRAM_TXSR);
	LPC_EMC->DynamicAPR = SDRAM_TAPR;
	LPC_EMC->DynamicDAL = SDRAM_TDAL+P2C(SDRAM_TRP);
	LPC_EMC->DynamicWR = SDRAM_TWR;
	LPC_EMC->DynamicRC = P2C(SDRAM_TRC);
	LPC_EMC->DynamicRFC = P2C(SDRAM_TRFC);
	LPC_EMC->DynamicXSR = P2C(SDRAM_TXSR);
	LPC_EMC->DynamicRRD = P2C(SDRAM_TRRD);
	LPC_EMC->DynamicMRD = SDRAM_TMRD;

	// 13 row, 9 - col, SDRAM
	LPC_EMC->DynamicConfig0 = 0x0004680;
// 	LPC_EMC->DynamicConfig1 = 0x0004680;
// 	LPC_EMC->DynamicConfig2 = 0x0004680;
// 	LPC_EMC->DynamicConfig3 = 0x0004680;
	// JEDEC General SDRAM Initialization Sequence
	// DELAY to allow power and clocks to stabilize ~100 us
	// NOP
	LPC_EMC->DynamicControl = 0x0183;
	for(i= 200*30; i;i--);
	// PALL
	LPC_EMC->DynamicControl = 0x0103;
	LPC_EMC->DynamicRefresh = 2;
	for(i= 256; i; --i); // > 128 clk
	LPC_EMC->DynamicRefresh = P2C(SDRAM_REFRESH) >> 4;
	// COMM

    LPC_EMC->DynamicControl    = 0x00000083; /* Issue MODE command */
	Dummy = *((volatile uint32_t *)(SDRAM_BASE_ADDR | (0x32<<13)));
	// NORM
	LPC_EMC->DynamicControl = 0x0000;
	LPC_EMC->DynamicConfig0 |=(1<<19);
// 	LPC_EMC->DynamicConfig1 |=(1<<19);
// 	LPC_EMC->DynamicConfig2 |=(1<<19);
// 	LPC_EMC->DynamicConfig3 |=(1<<19);
	for(i = 100000; i;i--);
	
}

اینم کد تست:

wr_ptr = (uint32_t *)SDRAM_BASE_ADDR;
*wr_ptr = 0xFFFF0A0A;
v1=*wr_ptr;
*wr_ptr = 0x0A0A;
v2=*wr_ptr;

که
v1=0x88C9760A
v2=0x0A0A

کمک