rt-thread-official/bsp/swm320-lq100/Libraries/SWM320_StdPeriph_Driver/SWM320_flash.c

/******************************************************************************************************************************************
* <EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>: SWM320_flash.c
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD>: ʹ<EFBFBD><EFBFBD>оƬ<EFBFBD><EFBFBD>IAP<EFBFBD><EFBFBD><EFBFBD>ܽ<EFBFBD>Ƭ<EFBFBD><EFBFBD>Flashģ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>EEPROM<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>󲻶<EFBFBD>ʧ
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD>֧<EFBFBD><EFBFBD>: http://www.synwit.com.cn/e/tool/gbook/?bid=1
* ע<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>:
* <EFBFBD>汾<EFBFBD><EFBFBD><EFBFBD><EFBFBD>: V1.1.0      2017<EFBFBD><EFBFBD>10<EFBFBD><EFBFBD>25<EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>¼:
*******************************************************************************************************************************************
* @attention
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH CODING INFORMATION
* REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. AS A RESULT, SYNWIT SHALL NOT BE HELD LIABLE
* FOR ANY DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT
* OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION CONTAINED HEREIN IN CONN-
* -ECTION WITH THEIR PRODUCTS.
*
* COPYRIGHT 2012 Synwit Technology
*******************************************************************************************************************************************/
#include "SWM320.h"
#include "SWM320_flash.h"


__attribute__((section("PlaceInRAM")))
static void switchTo80M(void)
{
    uint32_t i;

    for (i = 0; i < 50; i++) __NOP();

    FLASH->CFG0 = 0x4bf;
    FLASH->CFG1 = 0xabfc7a6e;

    for (i = 0; i < 50; i++) __NOP();
}

/******************************************************************************************************************************************
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>: FLASH_Erase()
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD>: Ƭ<EFBFBD><EFBFBD>Flash<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD>    <EFBFBD><EFBFBD>: uint32_t addr           <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ
* <EFBFBD><EFBFBD>    <EFBFBD><EFBFBD>: <EFBFBD><EFBFBD>
* ע<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>: <EFBFBD><EFBFBD>
******************************************************************************************************************************************/
void FLASH_Erase(uint32_t addr)
{
//  switchTo80M();

    FLASH->ERASE = addr | ((uint32_t)1 << FLASH_ERASE_REQ_Pos);
    while ((FLASH->STAT & FLASH_STAT_ERASE_GOING_Msk) == 0);
    while ((FLASH->STAT & FLASH_STAT_ERASE_GOING_Msk) == 1);

    FLASH->ERASE = 0;

//  switchTo40M();
}

/******************************************************************************************************************************************
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>: FLASH_Write()
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD>: Ƭ<EFBFBD><EFBFBD>Flashд<EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD>    <EFBFBD><EFBFBD>: uint32_t addr           д<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ
*           uint32_t buff[]         Ҫд<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
*           uint32_t size           Ҫд<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵĸ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD>λ
* <EFBFBD><EFBFBD>    <EFBFBD><EFBFBD>: <EFBFBD><EFBFBD>
* ע<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>: <EFBFBD><EFBFBD>
******************************************************************************************************************************************/
void FLASH_Write(uint32_t addr, uint32_t buff[], uint32_t size)
{
    uint32_t i, j;

    switchTo80M();

    FLASH->CACHE |= (1 << FLASH_CACHE_PROG_Pos);

    for (i = 0; i < size / 4; i++)
    {
        FLASH->ADDR = addr + i * 4 * 4;

        for (j = 0; j < 4; j++)
            FLASH->DATA = buff[i * 4 + j];
        while ((FLASH->STAT & FLASH_STAT_FIFO_EMPTY_Msk) == 0) __NOP();
    }
    if ((size % 4) != 0)
    {
        FLASH->ADDR = addr + i * 4 * 4;

        for (j = 0; j < size % 4; j++)
            FLASH->DATA = buff[i * 4 + j];
        while ((FLASH->STAT & FLASH_STAT_FIFO_EMPTY_Msk) == 0) __NOP();
    }
    while (FLASH->STAT & FLASH_STAT_PROG_GOING_Msk);

    FLASH->CACHE |= (1 << FLASH_CACHE_CLEAR_Pos);
    FLASH->CACHE = 0;

//  switchTo40M();
}