flash programming driver for stm32l4x

src/configuration_handler.c

@@ -18,8 +18,8 @@
 #endif
 
 #ifdef STM32L471xx
+#include "./drivers/l4/flash_stm32l4x.h"
 #include <stm32l4xx.h>
-#include <stm32l4xx_ll_flash.h>
 #include <stm32l4xx_ll_crc.h>
 #endif
 

system/include/drivers/l4/flash_stm32l4x.h

@@ -0,0 +1,36 @@
+/*
+ * flash_stm32l4x.h
+ *
+ *  Created on: Jun 6, 2021
+ *      Author: mateusz
+ */
+
+#ifndef INCLUDE_DRIVERS_L4_FLASH_STM32L4X_H_
+#define INCLUDE_DRIVERS_L4_FLASH_STM32L4X_H_
+
+#include "station_config_target_hw.h"
+
+typedef enum
+{
+  FLASH_BUSY = 1,
+  FLASH_ERROR_PG,
+  FLASH_ERROR_WRP,
+  FLASH_COMPLETE,
+  FLASH_TIMEOUT
+}FLASH_Status;
+
+
+#define FLASH_BANK_1              ((uint32_t)0x01)                          /*!< Bank 1   */
+#if defined (STM32L471xx) || defined (STM32L475xx) || defined (STM32L476xx) || defined (STM32L485xx) || defined (STM32L486xx) || \
+    defined (STM32L496xx) || defined (STM32L4A6xx) || defined (STM32L4P5xx) || defined (STM32L4Q5xx) || defined (STM32L4R5xx) || \
+    defined (STM32L4R7xx) || defined (STM32L4R9xx) || defined (STM32L4S5xx) || defined (STM32L4S7xx) || defined (STM32L4S9xx)
+#define FLASH_BANK_2              ((uint32_t)0x02)                          /*!< Bank 2   */
+#define FLASH_BANK_BOTH           ((uint32_t)(FLASH_BANK_1 | FLASH_BANK_2)) /*!< Bank1 and Bank2  */
+#else
+#define FLASH_BANK_BOTH           ((uint32_t)(FLASH_BANK_1))                /*!< Bank 1   */
+#endif
+
+FLASH_Status FLASH_GetBank1Status(void);
+
+
+#endif /* INCLUDE_DRIVERS_L4_FLASH_STM32L4X_H_ */

system/src/drivers/l4/flash_stm32l4x.c

@@ -0,0 +1,133 @@
+/*
+ * flash_stm32l4x.c
+ *
+ *  Created on: Jun 6, 2021
+ *      Author: mateusz
+ */
+
+#include "./drivers/l4/flash_stm32l4x.h"
+#include "stm32l4xx.h"
+
+/**
+  * @brief  Returns the FLASH Bank1 Status.
+  * @note   This function can be used for all STM32F10x devices, it is equivalent
+  *         to FLASH_GetStatus function.
+  * @param  None
+  * @retval FLASH Status: The returned value can be: FLASH_BUSY, FLASH_ERROR_PG,
+  *         FLASH_ERROR_WRP or FLASH_COMPLETE
+  */
+FLASH_Status FLASH_GetBank1Status(void)
+{
+  FLASH_Status flashstatus = FLASH_COMPLETE;
+
+  if((FLASH->SR & FLASH_SR_BSY) == FLASH_SR_BSY)
+  {
+    flashstatus = FLASH_BUSY;
+  }
+  else
+  {
+    if((FLASH->SR & FLASH_SR_FASTERR) != 0)
+    {
+      flashstatus = FLASH_ERROR_PG;
+    }
+    else if ((FLASH->SR & FLASH_SR_FASTERR) != 0)
+    {
+        flashstatus = FLASH_ERROR_PG;
+    }
+    else if ((FLASH->SR & FLASH_SR_PROGERR) != 0)
+    {
+        flashstatus = FLASH_ERROR_PG;
+    }
+    else
+    {
+      if((FLASH->SR & FLASH_SR_WRPERR) != 0 )
+      {
+        flashstatus = FLASH_ERROR_WRP;
+      }
+      else
+      {
+        flashstatus = FLASH_COMPLETE;
+      }
+    }
+  }
+  /* Return the Flash Status */
+  return flashstatus;
+}
+
+FLASH_Status FLASH_ErasePage(uint32_t Page_Address) {
+
+
+}
+
+/**
+  * @brief  Erase the specified FLASH memory page.
+  * @param  Page FLASH page to erase
+  *         This parameter must be a value between 0 and (max number of pages in the bank - 1)
+  * @param  Banks Bank(s) where the page will be erased
+  *          This parameter can be one of the following values:
+  *            @arg FLASH_BANK_1: Page in bank 1 to be erased
+  *            @arg FLASH_BANK_2: Page in bank 2 to be erased
+  * @retval None
+  */
+void FLASH_PageErase(uint32_t Page, uint32_t Banks)
+{
+  /* Check the parameters */
+  assert_param(IS_FLASH_PAGE(Page));
+
+#if defined (STM32L471xx) || defined (STM32L475xx) || defined (STM32L476xx) || defined (STM32L485xx) || defined (STM32L486xx) || \
+    defined (STM32L496xx) || defined (STM32L4A6xx) || \
+    defined (STM32L4P5xx) || defined (STM32L4Q5xx) || \
+    defined (STM32L4R5xx) || defined (STM32L4R7xx) || defined (STM32L4R9xx) || defined (STM32L4S5xx) || defined (STM32L4S7xx) || defined (STM32L4S9xx)
+#if defined (STM32L4P5xx) || defined (STM32L4Q5xx) || defined (STM32L4R5xx) || defined (STM32L4R7xx) || defined (STM32L4R9xx) || defined (STM32L4S5xx) || defined (STM32L4S7xx) || defined (STM32L4S9xx)
+  if(READ_BIT(FLASH->OPTR, FLASH_OPTR_DBANK) == 0U)
+  {
+    CLEAR_BIT(FLASH->CR, FLASH_CR_BKER);
+  }
+  else
+#endif
+  {
+
+    if((Banks & FLASH_BANK_1) != 0U)
+    {
+      CLEAR_BIT(FLASH->CR, FLASH_CR_BKER);
+    }
+    else
+    {
+      SET_BIT(FLASH->CR, FLASH_CR_BKER);
+    }
+  }
+#else
+  /* Prevent unused argument(s) compilation warning */
+  UNUSED(Banks);
+#endif
+
+  /* Proceed to erase the page */
+  MODIFY_REG(FLASH->CR, FLASH_CR_PNB, ((Page & 0xFFU) << FLASH_CR_PNB_Pos));
+  SET_BIT(FLASH->CR, FLASH_CR_PER);
+  SET_BIT(FLASH->CR, FLASH_CR_STRT);
+}
+
+
+FLASH_Status FLASH_WaitForLastOperation(uint32_t Timeout)
+{
+  FLASH_Status status = FLASH_COMPLETE;
+
+  /* Check for the Flash Status */
+  status = FLASH_GetBank1Status();
+  /* Wait for a Flash operation to complete or a TIMEOUT to occur */
+  while((status == FLASH_BUSY) && (Timeout != 0x00))
+  {
+    status = FLASH_GetBank1Status();
+    Timeout--;
+  }
+  if(Timeout == 0x00 )
+  {
+    status = FLASH_TIMEOUT;
+  }
+  /* Return the operation status */
+  return status;
+}
+
+
+
+