src/main/drivers/flash_impl.h

   1 /*
   2  * This file is part of Cleanflight and Betaflight.
   3  *
   4  * Cleanflight and Betaflight are free software. You can redistribute
   5  * this software and/or modify this software under the terms of the
   6  * GNU General Public License as published by the Free Software
   7  * Foundation, either version 3 of the License, or (at your option)
   8  * any later version.
   9  *
  10  * Cleanflight and Betaflight are distributed in the hope that they
  11  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
  12  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  13  * See the GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this software.
  17  *
  18  * If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 /*
  22  * Author: jflyper
  23  */
  24
  25 #pragma once
  26
  27 #include "drivers/bus.h"
  28 #include "drivers/dma.h"
  29
  30 struct flashVTable_s;
  31
  32 typedef enum {
  33     FLASHIO_NONE = 0,
  34     FLASHIO_SPI,
  35     FLASHIO_QUADSPI
  36 } flashDeviceIoMode_e;
  37
  38 typedef struct flashDeviceIO_s {
  39     union {
  40         extDevice_t *dev; // Device interface dependent handle (spi/i2c)
  41     #ifdef USE_QUADSPI
  42         QUADSPI_TypeDef *quadSpi;
  43     #endif
  44     } handle;
  45     flashDeviceIoMode_e mode;
  46 } flashDeviceIO_t;
  47
  48 typedef struct flashDevice_s {
  49     const struct flashVTable_s *vTable;
  50     flashGeometry_t geometry;
  51     uint32_t currentWriteAddress;
  52     bool isLargeFlash;
  53     // Whether we've performed an action that could have made the device busy
  54     // for writes. This allows us to avoid polling for writable status
  55     // when it is definitely ready already.
  56     bool couldBeBusy;
  57     uint32_t timeoutAt;
  58     flashDeviceIO_t io;
  59     void (*callback)(uint32_t arg);
  60     uint32_t callbackArg;
  61 } flashDevice_t;
  62
  63 typedef struct flashVTable_s {
  64     bool (*isReady)(flashDevice_t *fdevice);
  65     bool (*waitForReady)(flashDevice_t *fdevice);
  66     void (*eraseSector)(flashDevice_t *fdevice, uint32_t address);
  67     void (*eraseCompletely)(flashDevice_t *fdevice);
  68     void (*pageProgramBegin)(flashDevice_t *fdevice, uint32_t address, void (*callback)(uint32_t length));
  69     uint32_t (*pageProgramContinue)(flashDevice_t *fdevice, uint8_t const **buffers, uint32_t *bufferSizes, uint32_t bufferCount);
  70     void (*pageProgramFinish)(flashDevice_t *fdevice);
  71     void (*pageProgram)(flashDevice_t *fdevice, uint32_t address, const uint8_t *data, uint32_t length, void (*callback)(uint32_t length));
  72     void (*flush)(flashDevice_t *fdevice);
  73     int (*readBytes)(flashDevice_t *fdevice, uint32_t address, uint8_t *buffer, uint32_t length);
  74     const flashGeometry_t *(*getGeometry)(flashDevice_t *fdevice);
  75 } flashVTable_t;