source: ctrl/firmware/Main/CubeMX/FATFS/Target/eeprom_diskio.c

Last change on this file was 90, checked in by Zed, 3 months ago

Communication with M24256E EEPROM works.
File size: 10.0 KB
Line 
1/* USER CODE BEGIN Header */
2/**
3 ******************************************************************************
4  * @file    user_diskio.c
5  * @brief   This file includes a diskio driver skeleton to be completed by the user.
6  ******************************************************************************
7  * @attention
8  *
9  * Copyright (c) 2025 STMicroelectronics.
10  * All rights reserved.
11  *
12  * This software is licensed under terms that can be found in the LICENSE file
13  * in the root directory of this software component.
14  * If no LICENSE file comes with this software, it is provided AS-IS.
15  *
16  ******************************************************************************
17  */
18 /* USER CODE END Header */
19
20#ifdef USE_OBSOLETE_USER_CODE_SECTION_0
21/*
22 * Warning: the user section 0 is no more in use (starting from CubeMx version 4.16.0)
23 * To be suppressed in the future.
24 * Kept to ensure backward compatibility with previous CubeMx versions when
25 * migrating projects.
26 * User code previously added there should be copied in the new user sections before
27 * the section contents can be deleted.
28 */
29/* USER CODE BEGIN 0 */
30/* USER CODE END 0 */
31#endif
32
33/* USER CODE BEGIN DECL */
34
35/* Includes ------------------------------------------------------------------*/
36#include <stdio.h>
37#include <string.h>
38
39#include "ff_gen_drv.h"
40
41#include "eeprom_diskio.h"
42#include "eeprom_conf.h"
43#include "m24256e.h"
44
45/* Private typedef -----------------------------------------------------------*/
46/* Private define ------------------------------------------------------------*/
47
48/* Private variables ---------------------------------------------------------*/
49/* Disk status */
50static volatile DSTATUS Stat = STA_NOINIT;
51
52uint8_t M24256E_CDA_DevSelCode = 0xB0;
53uint8_t M24256E_IDPage_DevSelCode = 0xB0;
54uint8_t M24256E_Memory_DevSelCode = 0xA0;
55
56static M24256E_EEPROM_CommonDrv_t *M24256EDrv[EEICA1_M24_INSTANCES_NBR];
57void *M24256ECompObj[EEICA1_M24_INSTANCES_NBR];
58
59/* USER CODE END DECL */
60
61static int32_t M24256E_Probe(void);
62int32_t M24256E_IsDeviceReady(uint32_t Instance, const uint32_t Trials);
63int32_t M24256E_ReadPage(uint32_t Instance, uint8_t * const pData, const uint32_t TarAddr, const uint16_t Size);
64
65/* Private function prototypes -----------------------------------------------*/
66DSTATUS EEPROM_initialize (BYTE pdrv);
67DSTATUS EEPROM_status (BYTE pdrv);
68DRESULT EEPROM_read (BYTE pdrv, BYTE *buff, DWORD sector, UINT count);
69#if _USE_WRITE == 1
70  DRESULT EEPROM_write (BYTE pdrv, const BYTE *buff, DWORD sector, UINT count);
71#endif /* _USE_WRITE == 1 */
72#if _USE_IOCTL == 1
73  DRESULT EEPROM_ioctl (BYTE pdrv, BYTE cmd, void *buff);
74#endif /* _USE_IOCTL == 1 */
75
76Diskio_drvTypeDef  EEPROM_Driver =
77{
78  EEPROM_initialize,
79  EEPROM_status,
80  EEPROM_read,
81#if  _USE_WRITE
82  EEPROM_write,
83#endif  /* _USE_WRITE == 1 */
84#if  _USE_IOCTL == 1
85  EEPROM_ioctl,
86#endif /* _USE_IOCTL == 1 */
87};
88
89/* Private functions ---------------------------------------------------------*/
90
91/**
92  * @brief  Initializes a Drive
93  * @param  pdrv: Physical drive number (0..)
94  * @retval DSTATUS: Operation status
95  */
96DSTATUS EEPROM_initialize (BYTE pdrv /* Physical drive nmuber to identify the drive */
97                                                                          )
98{
99        /* USER CODE BEGIN INIT */
100        UNUSED(pdrv);                                                                                                                           // We have only one EEPROM on the bus
101
102    Stat = STA_NOINIT;
103
104        if (M24256E_Probe() == BSP_ERROR_NONE)
105                Stat = 0;
106
107    return Stat;
108        /* USER CODE END INIT */
109}
110
111/**
112  * @brief  Gets Disk Status
113  * @param  pdrv: Physical drive number (0..)
114  * @retval DSTATUS: Operation status
115  */
116DSTATUS EEPROM_status (
117        BYTE pdrv       /* Physical drive number to identify the drive */
118)
119{
120        /* USER CODE BEGIN STATUS */
121        UNUSED(pdrv);                                                                                                                           // We have only one EEPROM on the bus
122    Stat = STA_NOINIT;
123
124        if (M24256E_IsDeviceReady(EEICA1_M24256E, MAX_TRIALS) == BSP_ERROR_NONE)
125                Stat = 0;
126
127    return Stat;
128        /* USER CODE END STATUS */
129}
130
131/**
132  * @brief  Reads Sector(s)
133  * @param  pdrv: Physical drive number (0..)
134  * @param  *buff: Data buffer to store read data
135  * @param  sector: Sector address (LBA)
136  * @param  count: Number of sectors to read (1..128)
137  * @retval DRESULT: Operation result
138  */
139DRESULT EEPROM_read (
140        BYTE pdrv,      /* Physical drive nmuber to identify the drive */
141        BYTE *buff,     /* Data buffer to store read data */
142        DWORD sector,   /* Sector address in LBA */
143        UINT count      /* Number of sectors to read */
144)
145{
146        /* USER CODE BEGIN READ */
147        UNUSED(pdrv);
148        printf("Requested %u sectors starting at %lu.\n", count, sector);
149
150        if (M24256E_ReadPage(EEICA1_M24256E, buff, sector * _MIN_SS, count * _MIN_SS) != BSP_ERROR_NONE)
151                return RES_ERROR;
152
153    return RES_OK;
154        /* USER CODE END READ */
155}
156
157/**
158  * @brief  Writes Sector(s)
159  * @param  pdrv: Physical drive number (0..)
160  * @param  *buff: Data to be written
161  * @param  sector: Sector address (LBA)
162  * @param  count: Number of sectors to write (1..128)
163  * @retval DRESULT: Operation result
164  */
165#if _USE_WRITE == 1
166DRESULT EEPROM_write (
167        BYTE pdrv,          /* Physical drive nmuber to identify the drive */
168        const BYTE *buff,   /* Data to be written */
169        DWORD sector,       /* Sector address in LBA */
170        UINT count          /* Number of sectors to write */
171)
172{
173  /* USER CODE BEGIN WRITE */
174  /* USER CODE HERE */
175    return RES_OK;
176  /* USER CODE END WRITE */
177}
178#endif /* _USE_WRITE == 1 */
179
180/**
181  * @brief  I/O control operation
182  * @param  pdrv: Physical drive number (0..)
183  * @param  cmd: Control code
184  * @param  *buff: Buffer to send/receive control data
185  * @retval DRESULT: Operation result
186  */
187#if _USE_IOCTL == 1
188DRESULT EEPROM_ioctl (
189        BYTE pdrv,      /* Physical drive nmuber (0..) */
190        BYTE cmd,       /* Control code */
191        void *buff      /* Buffer to send/receive control data */
192)
193{
194        /* USER CODE BEGIN IOCTL */
195        UNUSED(pdrv);
196
197    DRESULT res = RES_ERROR;
198
199    if (Stat & STA_NOINIT) return RES_NOTRDY;
200
201    switch (cmd)
202    {
203                case CTRL_SYNC:   // Make sure that no pending write process
204                        res = RES_OK;
205                        break;
206
207                case GET_SECTOR_COUNT:    // Get number of sectors on the disk (DWORD)
208                        *(DWORD*)buff = M24256E_MEMORYSIZE / _MIN_SS;
209                        res = RES_OK;
210                        break;
211
212                case GET_SECTOR_SIZE:   // Get R/W sector size (WORD)
213                        *(WORD*)buff = _MIN_SS;
214                        res = RES_OK;
215                        break;
216
217
218                case GET_BLOCK_SIZE:    // Get erase block size in unit of sector (DWORD)
219                        *(DWORD*)buff = 1;
220                        res = RES_OK;
221                        break;
222
223                default:
224                        res = RES_PARERR;
225    }
226
227    return res;
228        /* USER CODE END IOCTL */
229}
230#endif /* _USE_IOCTL == 1 */
231
232//------------------------------------------------------------------------------
233
234/**
235* @brief  Reads complete page from the memory at page start address
236* @param  Instance : I2C EEPROM instance to be used
237* @param  pData   : pointer to the data to read
238* @param  TarAddr : starting page address to read
239* @param  Size    : Size in bytes of the value to be written
240* @retval BSP status
241*/
242int32_t M24256E_ReadPage(uint32_t Instance, uint8_t * const pData, const uint32_t TarAddr, const uint16_t Size)
243{
244  int32_t ret = BSP_ERROR_NONE;
245
246  if ((TarAddr + Size)> M24256E_MEMORYSIZE)
247    return BSP_ERROR_WRONG_PARAM;
248
249  uint32_t iNumberOfPage = (TarAddr + Size) / M24256E_PAGESIZE;
250  uint32_t iRemainder = (TarAddr + Size) % M24256E_PAGESIZE;
251
252  uint32_t PageAddress = TarAddr * M24256E_PAGESIZE;
253  uint32_t iPageNumber = TarAddr;
254  if (iRemainder != 0U)
255  {
256    iNumberOfPage += 1U;
257  }
258
259  if (iNumberOfPage <= 1U)
260  {
261    if (M24256EDrv[Instance]->ReadPage(M24256ECompObj[Instance], pData, PageAddress, M24256E_PAGESIZE) != BSP_ERROR_NONE)
262    {
263      ret = BSP_ERROR_COMPONENT_FAILURE;
264    }
265    else
266    {
267      ret = BSP_ERROR_NONE;
268    }
269  }
270  else
271  {
272    for (uint32_t iCounter=0; iCounter<iNumberOfPage; iCounter++)
273    {
274      uint32_t iPageAddress = iPageNumber * M24256E_PAGESIZE;
275      ret = M24256EDrv[Instance]->ReadPage(M24256ECompObj[Instance], &pData[0U + (iCounter*M24256E_PAGESIZE)], iPageAddress, M24256E_PAGESIZE);
276      iPageNumber++;
277      HAL_Delay(5);
278    }
279  }
280
281  return ret;
282}
283
284//------------------------------------------------------------------------------
285
286/**
287* @brief  Checks if the memory is available
288* @param  Instance : I2C EEPROM instance to be used
289* @param  Trials : Number of trials
290* @retval BSP status
291*/
292int32_t M24256E_IsDeviceReady(uint32_t Instance, const uint32_t Trials)
293{
294    int32_t ret;
295
296    if (M24256EDrv[Instance]->IsReady(M24256ECompObj[Instance], Trials) != BSP_ERROR_NONE)
297    {
298      ret = BSP_ERROR_COMPONENT_FAILURE;
299    }
300    else
301    {
302      ret = BSP_ERROR_NONE;
303    }
304    return ret;
305}
306
307//------------------------------------------------------------------------------
308
309/**
310* @brief  Register Bus IOs for instance M24256E
311* @retval BSP status
312*/
313static int32_t M24256E_Probe(void)
314{
315    M24256E_IO_t io_ctx256;
316    int32_t ret = BSP_ERROR_NONE;
317    static M24256E_Object_t M24256_obj_0;
318
319    io_ctx256.Address     = M24256E_CDA_DevSelCode;
320    io_ctx256.Init        = EEICA1_I2C_INIT;
321    io_ctx256.DeInit      = EEICA1_I2C_DEINIT;
322    io_ctx256.ReadReg     = EEICA1_I2C_READREG;
323    io_ctx256.WriteReg    = EEICA1_I2C_WRITEREG;
324    io_ctx256.ReadReg16   = EEICA1_I2C_READREG16;
325    io_ctx256.WriteReg16  = EEICA1_I2C_WRITEREG16;
326    io_ctx256.Transmit    = EEICA1_I2C_SEND;
327    io_ctx256.IsReady     = EEICA1_I2C_ISREADY;
328    io_ctx256.Delay       = EEICA1_M24_DELAY;
329
330    if (M24256E_RegisterBusIO(&M24256_obj_0, &io_ctx256) != M24_OK)
331    {
332                ret = BSP_ERROR_UNKNOWN_COMPONENT;
333    }
334
335    M24256ECompObj[EEICA1_M24256E] = &M24256_obj_0;
336    M24256EDrv[EEICA1_M24256E] = (M24256E_EEPROM_CommonDrv_t *)(void *)&M24256E_i2c_Drv;
337
338    if (M24256EDrv[EEICA1_M24256E]->Init(M24256ECompObj[EEICA1_M24256E]) != M24_OK)
339    {
340                ret = BSP_ERROR_COMPONENT_FAILURE;
341    }
342    else
343    {
344                ret = BSP_ERROR_NONE;
345    }
346    return ret;
347}
348
349//------------------------------------------------------------------------------
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