Diff: main.cpp

Revision:

0:d885866e7cbf

diff -r 000000000000 -r d885866e7cbf main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Aug 12 09:16:40 2019 +0000
@@ -0,0 +1,47 @@
+#include "stm32f4xx_flash.h"
+#include "mbed.h"
+
+//address (write & read)
+#define ADDR_FLASH_SECTOR_0     ((uint32_t)0x08000000) /* Base @ of Sector 0, 16 Kbytes */
+#define ADDR_FLASH_SECTOR_1     ((uint32_t)0x08004000) /* Base @ of Sector 1, 16 Kbytes */
+#define ADDR_FLASH_SECTOR_2     ((uint32_t)0x08008000) /* Base @ of Sector 2, 16 Kbytes */
+#define ADDR_FLASH_SECTOR_3     ((uint32_t)0x0800C000) /* Base @ of Sector 3, 16 Kbytes */
+#define ADDR_FLASH_SECTOR_4     ((uint32_t)0x08010000) /* Base @ of Sector 4, 64 Kbytes */
+#define ADDR_FLASH_SECTOR_5     ((uint32_t)0x08020000) /* Base @ of Sector 5, 128 Kbytes */
+#define ADDR_FLASH_SECTOR_6     ((uint32_t)0x08040000) /* Base @ of Sector 6, 128 Kbytes */
+#define ADDR_FLASH_SECTOR_7     ((uint32_t)0x08060000) /* Base @ of Sector 7, 128 Kbytes */
+
+// sector (erase sector) binary_SNB<<3
+#define FLASH_Latency_0                ((uint8_t)0x0000)  /*!< FLASH Zero Latency cycle      */
+#define FLASH_Latency_1                ((uint8_t)0x0001)  /*!< FLASH One Latency cycle       */
+#define FLASH_Latency_2                ((uint8_t)0x0002)  /*!< FLASH Two Latency cycles      */
+#define FLASH_Latency_3                ((uint8_t)0x0003)  /*!< FLASH Three Latency cycles    */
+#define FLASH_Latency_4                ((uint8_t)0x0004)  /*!< FLASH Four Latency cycles     */
+#define FLASH_Latency_5                ((uint8_t)0x0005)  /*!< FLASH Five Latency cycles     */
+#define FLASH_Latency_6                ((uint8_t)0x0006)  /*!< FLASH Six Latency cycles      */
+#define FLASH_Latency_7                ((uint8_t)0x0007)  /*!< FLASH Seven Latency cycles    */
+                             
+Serial pc(USBTX,USBRX);
+
+int main(){
+    FLASH_Unlock();
+    FLASH_ClearFlag( FLASH_FLAG_EOP |  FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
+    FLASH_EraseSector(0x0002<<3, VoltageRange_3); // erase whole sector 
+    FLASH_ProgramWord(0x08008000,0xFFFF);           // write at address, 쓸때도 4byte씩 씀
+    FLASH_Lock();
+    int a=*(int*)(0x08008000);                // 32 bit int로 읽음 _ 4byte씩 
+    pc.printf("%d\n",a);
+    a=*(int*)(0x08008001);
+    pc.printf("%d\n",a);
+    a=*(int*)(0x08008002);
+    pc.printf("%d\n",a);
+    a=*(int*)(0x08008003);
+    pc.printf("%d\n",a);
+    a=*(int*)(0x08040004);
+    pc.printf("%d\n",a);
+    while(1){
+//        int a=*(int*)(0x08040000);                // read value at address
+//        pc.printf("%d\n",a);
+        }
+}
+