Diff: SDRAM_DISCO_F746NG_BlockDevice.h

Revision:

1:36b940e6b8d2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SDRAM_DISCO_F746NG_BlockDevice.h	Thu Mar 08 20:14:42 2018 +0000
@@ -0,0 +1,150 @@
+/* Copyright (c) 2010-2016 mbed.org, MIT License
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+* and associated documentation files (the "Software"), to deal in the Software without
+* restriction, including without limitation the rights to use, copy, modify, merge, publish,
+* distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+* Software is furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in all copies or
+* substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#ifndef __SDRAM_DISCO_F746NG_H
+#define __SDRAM_DISCO_F746NG_H
+
+#ifdef TARGET_DISCO_F746NG
+
+#include "mbed.h"
+#include "stm32746g_discovery_sdram.h"
+#include "BlockDevice.h"
+
+/*
+  This class drives the SDRAM driver (MT48LC4M32B2B5-7) present on DISCO_F746NG board.
+
+  Usage:
+
+  #include "mbed.h"
+  #include "SDRAM_DISCO_F746NG.h"
+
+  int main()
+  {
+	  sdram.WriteData(SDRAM_DEVICE_ADDR + WRITE_READ_ADDR, WriteBuffer, BUFFER_SIZE);
+	  SDRAMCommandStructure.CommandMode            = FMC_SDRAM_CMD_SELFREFRESH_MODE;
+      SDRAMCommandStructure.CommandTarget          = FMC_SDRAM_CMD_TARGET_BANK2;
+      SDRAMCommandStructure.AutoRefreshNumber      = 1;
+      SDRAMCommandStructure.ModeRegisterDefinition = 0;
+      sdram.Sendcmd(&SDRAMCommandStructure);
+      SDRAMCommandStructure.CommandMode = FMC_SDRAM_CMD_NORMAL_MODE;
+      sdram.Sendcmd(&SDRAMCommandStructure);
+      sdram.ReadData(SDRAM_DEVICE_ADDR + WRITE_READ_ADDR, ReadBuffer, BUFFER_SIZE);
+      CompareBuffer(WriteBuffer, ReadBuffer, BUFFER_SIZE);
+      while(1) {
+      }
+  }
+
+*/
+class SDRAM_DISCO_F746NG_BlockDevice : public BlockDevice
+{
+  
+public:
+  //! Constructor
+  //SDRAM_DISCO_F746NG_BlockDevice();
+
+  //! Destructor
+  //~SDRAM_DISCO_F746NG_BlockDevice();
+
+
+  /**
+    * @brief  Initializes the SDRAM device.
+    * @retval SDRAM status
+    */
+    
+  virtual int init();	
+  //virtual uint8_t Init(void);
+
+  /**
+    * @brief  DeInitializes the SDRAM device.
+    * @retval SDRAM status
+    */
+    
+  virtual int deinit();
+  //virtual uint8_t DeInit(void);
+
+  /**
+    * @brief  Programs the SDRAM device.
+    * @param  RefreshCount: SDRAM refresh counter value 
+    * @retval None
+    */
+  
+  void Initialization_sequence(uint32_t RefreshCount);
+
+  /**
+    * @brief  Reads an amount of data from the SDRAM memory in polling mode.
+    * @param  uwStartAddress: Read start address
+    * @param  pData: Pointer to data to be read  
+    * @param  uwDataSize: Size of read data from the memory
+    * @retval SDRAM status
+    */
+    
+  virtual int read(void *buffer, bd_addr_t addr, bd_size_t size);
+  //uint8_t ReadData(uint32_t uwStartAddress, uint32_t *pData, uint32_t uwDataSize);
+
+  /**
+    * @brief  Reads an amount of data from the SDRAM memory in DMA mode.
+    * @param  uwStartAddress: Read start address
+    * @param  pData: Pointer to data to be read  
+    * @param  uwDataSize: Size of read data from the memory
+    * @retval SDRAM status
+    */
+
+  uint8_t ReadData_DMA(uint32_t uwStartAddress, uint32_t *pData, uint32_t uwDataSize);
+
+  /**
+    * @brief  Writes an amount of data to the SDRAM memory in polling mode.
+    * @param  uwStartAddress: Write start address
+    * @param  pData: Pointer to data to be written  
+    * @param  uwDataSize: Size of written data from the memory
+    * @retval SDRAM status
+    */
+
+  virtual int program(const void *buffer, bd_addr_t addr, bd_size_t size);
+  //uint8_t WriteData(uint32_t uwStartAddress, uint32_t *pData, uint32_t uwDataSize); 
+
+  /**
+    * @brief  Writes an amount of data to the SDRAM memory in DMA mode.
+    * @param  uwStartAddress: Write start address
+    * @param  pData: Pointer to data to be written  
+    * @param  uwDataSize: Size of written data from the memory
+    * @retval SDRAM status
+    */
+  uint8_t WriteData_DMA(uint32_t uwStartAddress, uint32_t *pData, uint32_t uwDataSize); 
+
+  /**
+    * @brief  Sends command to the SDRAM bank.
+    * @param  SdramCmd: Pointer to SDRAM command structure 
+    * @retval SDRAM status
+    */  
+  uint8_t Sendcmd(FMC_SDRAM_CommandTypeDef *SdramCmd);
+  
+  virtual int erase(bd_addr_t addr, bd_size_t size);
+  virtual bd_size_t get_read_size() const;
+  virtual bd_size_t get_program_size() const;
+  virtual bd_size_t get_erase_size() const;
+  virtual bd_size_t size() const;  
+
+private:
+
+};
+
+#else
+#error "This class must be used with DISCO_F746NG board only."
+#endif // TARGET_DISCO_F746NG
+
+#endif