write continuous data to sdram on DE0 nano board

Hi Johi,

​

Thanks for the reply,

my qsys and top level are as below,

I use the onchip memory as nios2 cpu's memory.

​

Yes, it's very likely that data is written into the zone that is for other purpose,

is there any way to avoid it?

adam

​

​

module SPCM_NIOS(
 
	//////////// CLOCK //////////
	CLOCK_50,
 
	//////////// LED //////////
	LED,
 
	//////////// KEY //////////
	KEY,
 
	//////////// SDRAM //////////
	DRAM_ADDR,
	DRAM_BA,
	DRAM_CAS_N,
	DRAM_CKE,
	DRAM_CLK,
	DRAM_CS_N,
	DRAM_DQ,
	DRAM_DQM,
	DRAM_RAS_N,
	DRAM_WE_N,
 
	//////////// GPIO_0, GPIO_0 connect to GPIO Default //////////
	GP0,
	GP0_IN,
 
	//////////// GPIO_1, GPIO_1 connect to GPIO Default //////////
	GP1,
	GP1_IN 
);
 
//=======================================================
//  PARAMETER declarations
//=======================================================
 
 
//=======================================================
//  PORT declarations
//=======================================================
 
//////////// CLOCK //////////
input 		          		CLOCK_50;
 
//////////// LED //////////
output		     [7:0]		LED;
 
//////////// KEY //////////
input 		     [1:0]		KEY;
 
//////////// SDRAM //////////
output		    [12:0]		DRAM_ADDR;
output		     [1:0]		DRAM_BA;
output		          		DRAM_CAS_N;
output		          		DRAM_CKE;
output		          		DRAM_CLK;
output		          		DRAM_CS_N;
inout 		    [15:0]		DRAM_DQ;
output		     [1:0]		DRAM_DQM;
output		          		DRAM_RAS_N;
output		          		DRAM_WE_N;
 
//////////// GPIO_0, GPIO_0 connect to GPIO Default //////////
inout 		    [33:0]		GP0;
input 		     [1:0]		GP0_IN;
 
//////////// GPIO_1, GPIO_1 connect to GPIO Default //////////
inout 		    [33:0]		GP1;
input 		     [1:0]		GP1_IN;
 
 
 
 spcm_qsys u0 (
	  .clk_50_clk                        (CLOCK_50),                        //                      clk_50.clk
	  .rst_n_reset                       (KEY[0]),                       //                       rst_n.reset
	  .clk_sdram_clk_clk                 (DRAM_CLK),                 //               clk_sdram_clk.clk
	  .new_sdram_controller_0_wire_addr  (DRAM_ADDR),  // new_sdram_controller_0_wire.addr
	  .new_sdram_controller_0_wire_ba    (DRAM_BA),    //                            .ba
	  .new_sdram_controller_0_wire_cas_n (DRAM_CAS_N), //                            .cas_n
	  .new_sdram_controller_0_wire_cke   (DRAM_CKE),   //                            .cke
	  .new_sdram_controller_0_wire_cs_n  (DRAM_CS_N),  //                            .cs_n
	  .new_sdram_controller_0_wire_dq    (DRAM_DQ),    //                            .dq
	  .new_sdram_controller_0_wire_dqm   (DRAM_DQM),   //                            .dqm
	  .new_sdram_controller_0_wire_ras_n (DRAM_RAS_N), //                            .ras_n
	  .new_sdram_controller_0_wire_we_n  (DRAM_WE_N),   //                            .we_n
	  .key_export (KEY),
	  .led_export (LED)
 );
 
 
 
endmodule

​

Hi FJumaah,

Thanks for the reply!

Now I modify my code to use alt_ic_isr_register(...) function,

But unfortunately, the code is still stuck at the 65th press of the key😞

whether alt_ic_isr_register or alt_irq_register the results are the same.

#include <stdio.h>
#include <unistd.h>
#include "system.h"
#include "alt_types.h"
#include "io.h"
#include "altera_avalon_pio_regs.h"
#include "sys/alt_irq.h"
 
int bKeyPressed = 0;
int cnt = 1;
alt_u16 incre = 0;
alt_u16 data;
volatile int edge_capture;
 
void KEY_ISR(void* context){
 
        bKeyPressed = 1;
 
        // clear interrupt flag
        IOWR_ALTERA_AVALON_PIO_EDGE_CAP(KEY_BASE,0);
        printf("isr\n");
}
 
 
static void init_button_pio(){
 
	void* edge_capture_ptr = (void*) &edge_capture;
	// enable interrupt, 2-keybutton
	IOWR_ALTERA_AVALON_PIO_IRQ_MASK(KEY_BASE,0x03);
    // clear capture flag
    IOWR_ALTERA_AVALON_PIO_EDGE_CAP(KEY_BASE,0);
 
	#ifdef ALT_ENHANCED_INTERRUPT_API_PRESENT
    	alt_ic_isr_register(
    			KEY_IRQ_INTERRUPT_CONTROLLER_ID,
    			KEY_IRQ,
    			KEY_ISR,
    			edge_capture_ptr,
    			0x0);
    	printf("ENHANCED mode\n");
	#else
    	alt_irq_register (KEY_IRQ, edge_capture_ptr, KEY_ISR);
    	printf("LEGACY mode\n");
	#endif
 
}
 
 
int main()
{
	init_button_pio();
	IOWR(LED_BASE, 0, (alt_u8)0);
 
	while(1)
	{
		if(bKeyPressed)
		{
			bKeyPressed = 0;
 
			*((alt_u8*)NEW_SDRAM_CONTROLLER_0_BASE + incre) = cnt;
			data = *((alt_u8*)NEW_SDRAM_CONTROLLER_0_BASE + incre);
 
			printf("cnt = %d, ", cnt);
			printf("incre = %d, ", incre);
			printf("data=%x\n", data);
			IOWR(LED_BASE, 0, (alt_u8)data);
			cnt ++;
			incre += 1;
		}
	}
 
	printf("b\n");
  return 0;
}

Hello,

any results?