Diff: main.cpp

Revision:

0:23f5942ba14e

Child:

1:fa70127b3381

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Nov 30 13:44:37 2015 +0000
@@ -0,0 +1,54 @@
+#include "mbed.h"
+#include "stm32f4xx_hal_flash.h"
+
+namespace {
+    //STM32F411.C/E(DM00119316.pdf p.43 Table 4)
+    const uint32_t   ADDR_FLASH_SECTOR_0 = (uint32_t)0x08000000;     /* Base address of Sector 0,  16 Kbytes  */
+    const uint32_t   ADDR_FLASH_SECTOR_1 = (uint32_t)0x08004000;     /* Base address of Sector 1,  16 Kbytes  */
+    const uint32_t   ADDR_FLASH_SECTOR_2 = (uint32_t)0x08008000;     /* Base address of Sector 2,  16 Kbytes  */
+    const uint32_t   ADDR_FLASH_SECTOR_3 = (uint32_t)0x0800c000;     /* Base address of Sector 3,  16 Kbytes  */
+    const uint32_t   ADDR_FLASH_SECTOR_4 = (uint32_t)0x08010000;     /* Base address of Sector 4,  64 Kbytes  */
+    const uint32_t   ADDR_FLASH_SECTOR_5 = (uint32_t)0x08020000;     /* Base address of Sector 5, 128 Kbytes  */
+    const uint32_t   ADDR_FLASH_SECTOR_6 = (uint32_t)0x08040000;     /* Base address of Sector 6, 128 Kbytes  */
+    const uint32_t   ADDR_FLASH_SECTOR_7 = (uint32_t)0x08060000;     /* Base address of Sector 7, 128 Kbytes  */
+
+    /** @brief  内蔵FLASHへのbyte書込み(セクタ消去有り)
+     *
+     * @param[in]   addr    書込み先アドレス(ADDR_FLASH_SECTOR_x)
+     * @param[in]   pData   書き込みデータ
+     * @param[in]   Len     書き込みデータサイズ
+     */
+    void programByte(uint32_t addr, const uint8_t *pData, uint8_t Len)
+    {
+        HAL_StatusTypeDef ret;
+    
+        /* flash control registerへのアクセス許可 */
+        HAL_FLASH_Unlock();
+    
+        /* 消去(電圧 [2.7V to 3.6V]) */
+        FLASH_Erase_Sector(addr, FLASH_VOLTAGE_RANGE_3);
+    
+        /* 書込み(4byte単位) */
+        for (int lp = 0 ; lp < Len; lp ++) {
+            ret = HAL_FLASH_Program(FLASH_TYPEPROGRAM_BYTE, addr, *pData);
+            if (ret != HAL_OK) {
+                //trouble!!
+                while (true) {}
+            }
+            addr++;
+            pData++;
+        }
+    
+        /* flash control registerへのアクセス禁止 */
+        HAL_FLASH_Lock();
+    }
+}
+
+
+
+int main()
+{
+    uint8_t str[] = "Hello.";
+    
+    programByte(ADDR_FLASH_SECTOR_7, str, sizeof(str));
+}