软件包修改

applications/sdram/sdram_port.c

@@ -83,6 +83,7 @@ static void SDRAM_Initialization_Sequence(SDRAM_HandleTypeDef *hsdram, FMC_SDRAM
     /* Set the device refresh counter */
     HAL_SDRAM_ProgramRefreshRate(hsdram, SDRAM_REFRESH_COUNT);
 }
+
 static int SDRAM_Init(void)
 {
     int result = RT_EOK;
@@ -235,7 +236,7 @@ MSH_CMD_EXPORT(sdram_test, sdram test)
 /* 从片内 RAM 和 片外 SDRAM 顺序申请测试 */
 void malloc_test(void)
 {
-    int size = 50 * 1024;  // 50KBytes
+    int size = 1024 * 1024;  // 50KBytes
     rt_uint8_t * ptr = RT_NULL;
     ptr = rt_malloc(size);
     if(ptr != RT_NULL)

applications/sdram/sdram_port.h

@@ -30,18 +30,22 @@
 #define SDCLOCK_PERIOD                  2
 /* refresh rate counter */
 //#define SDRAM_REFRESH_COUNT             ((uint32_t)0x02AB)
-#define SDRAM_REFRESH_COUNT             ((uint32_t)0x1000)
+//#define SDRAM_REFRESH_COUNT             ((uint32_t)0x1000)
+#define SDRAM_REFRESH_COUNT             ((uint32_t)0x0396)
 #define SDRAM_SIZE                      ((uint32_t)0x2000000)
 /* Timing configuration for W9825G6KH-6 */
 /* 90 MHz of SD clock frequency (180MHz/2) */
 /* TMRD: 2 Clock cycles */
 #define LOADTOACTIVEDELAY               2
 /* TXSR: 7x11.90ns */
-#define EXITSELFREFRESHDELAY            12
+//#define EXITSELFREFRESHDELAY            12
+#define EXITSELFREFRESHDELAY            7
 /* TRAS: 4x11.90ns */
-#define SELFREFRESHTIME                 12
+//#define SELFREFRESHTIME                 12
+#define SELFREFRESHTIME                 5
 /* TRC:  7x11.90ns */
-#define ROWCYCLEDELAY                   10
+//#define ROWCYCLEDELAY                   10
+#define ROWCYCLEDELAY                   7
 /* TWR:  2 Clock cycles */
 #define WRITERECOVERYTIME               2
 /* TRP:  2x11.90ns */