添加一些关于midi播放的项目
This commit is contained in:
terryLP
@@ -0,0 +1,270 @@
|
||||
/*****************************************************************************!
|
||||
* 技术讨论：QQ群 123763203
|
||||
* 官网 ：www.navota.com
|
||||
*
|
||||
* @file eeprom.c
|
||||
* @brief flash模拟eeprom库函数
|
||||
* @author Navota
|
||||
* @date 2018-1-1
|
||||
***************************************************************************/
|
||||
#include "flash.h"
|
||||
#include "eeprom.h"
|
||||
#include <string.h>
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* EEPROM 擦除命令，擦掉eeprom
|
||||
*输入参数：地址，函数将会擦除adr所在的扇区（512字节）
|
||||
*
|
||||
******************************************************************************/
|
||||
uint16_t Adress_Js(uint32_t adr)
|
||||
{
|
||||
uint16_t err = EEPROM_ERR_SUCCESS;
|
||||
|
||||
if (adr & 0x03)
|
||||
{
|
||||
err = EEPROM_ERR_INVALID_PARAM;
|
||||
return (err);
|
||||
}
|
||||
|
||||
if (adr > 1024)
|
||||
{
|
||||
err = EEPROM_ADR_OverFlow;
|
||||
return (err);
|
||||
}
|
||||
return (err);
|
||||
}
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* EEPROM 擦除命令，擦掉eeprom
|
||||
*输入参数：地址，函数将会擦除adr所在的512bytes eeprom
|
||||
*
|
||||
******************************************************************************/
|
||||
uint16_t EEPROM_Erase(uint32_t adr)
|
||||
{
|
||||
uint16_t err = EEPROM_ERR_SUCCESS;
|
||||
uint32_t e_adr;
|
||||
|
||||
if (adr & 0x03)
|
||||
{
|
||||
err = EEPROM_ERR_INVALID_PARAM;
|
||||
return (err);
|
||||
}
|
||||
|
||||
if (adr > 1024)
|
||||
{
|
||||
err = EEPROM_ADR_OverFlow;
|
||||
|
||||
return (err);
|
||||
}
|
||||
|
||||
e_adr = adr + EEPROM_START_ADR;
|
||||
err = Flash_EraseSector(e_adr);
|
||||
return (err);
|
||||
}
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* EEPROM 读取函数，读取地址所在的eeprom
|
||||
*输入参数：地址
|
||||
*
|
||||
******************************************************************************/
|
||||
uint32_t EEPROM_Read(uint32_t adr)
|
||||
{
|
||||
uint16_t err = EEPROM_ERR_SUCCESS;
|
||||
uint32_t e_adr;
|
||||
uint32_t data;
|
||||
|
||||
if (adr & 0x03)
|
||||
{
|
||||
err = EEPROM_ERR_INVALID_PARAM;
|
||||
return (err);
|
||||
}
|
||||
|
||||
if (adr > 1024)
|
||||
{
|
||||
err = EEPROM_ADR_OverFlow;
|
||||
return (err);
|
||||
}
|
||||
|
||||
e_adr = adr + EEPROM_START_ADR;
|
||||
data = M32(e_adr);
|
||||
return (data);
|
||||
}
|
||||
/******************************************************************************
|
||||
*
|
||||
* EEPROM 写函数，写地址所在的eeprom
|
||||
* 写之前读取出来，判断eeprom是否为空，如果为空，则直接写
|
||||
* 如果非空，则先把整个512bytes sector读取到sram，修改要写的位置
|
||||
* 然后再写入到flash，模拟一个eeprom的写过程
|
||||
* 输入参数：地址
|
||||
*
|
||||
******************************************************************************/
|
||||
uint16_t EEPROM_Write(uint32_t adr, uint32_t Data)
|
||||
{
|
||||
|
||||
uint32_t err = EEPROM_ERR_SUCCESS;
|
||||
uint32_t e_adr;
|
||||
uint32_t r_data;
|
||||
uint16_t i;
|
||||
uint32_t start_adr;
|
||||
// uint32_t modify_adr;
|
||||
uint32_t EEPROM_DATA[128];
|
||||
|
||||
if (adr & 0x03)
|
||||
{
|
||||
err = EEPROM_ERR_INVALID_PARAM;
|
||||
return (err);
|
||||
}
|
||||
|
||||
if (adr > 1024)
|
||||
{
|
||||
err = EEPROM_ADR_OverFlow;
|
||||
return (err);
|
||||
}
|
||||
|
||||
r_data = EEPROM_Read(adr);
|
||||
|
||||
e_adr = adr + EEPROM_START_ADR;
|
||||
|
||||
if (r_data == EEPROM_BLANK) //如果要写的位置是空的，则直接写
|
||||
{
|
||||
err = Flash_Program1LongWord(e_adr, Data);
|
||||
}
|
||||
else if ((r_data & Data) == Data) //如果要写的位置对应的bit，和要写的数据一致，或者是1，也是可以直接写
|
||||
{
|
||||
err = Flash_Program1LongWord(e_adr, Data);
|
||||
}
|
||||
else if (r_data == Data) //如果要写的数据和现有的数据一致，就不进行任何操作，直接返回
|
||||
{
|
||||
return (err);
|
||||
}
|
||||
else
|
||||
{
|
||||
start_adr = e_adr & EEPROM_SECTOR_MASK; //计算出sector的头地址
|
||||
|
||||
for (i = 0; i < 128; i++) //如果要写的位置不为空，则先把flash内容读取出来，放在sram中，修改
|
||||
{
|
||||
EEPROM_DATA[i] = M32(start_adr + 4 * i);
|
||||
}
|
||||
|
||||
EEPROM_DATA[(adr & EEPROM_ARRAY_ADR_MASK) >> 2] = Data; //修改SRAM 中的数据
|
||||
|
||||
err = EEPROM_Erase(adr);
|
||||
|
||||
err = Flash_Program(start_adr, (uint8_t *)EEPROM_DATA, 512); //然后写入flash
|
||||
}
|
||||
return (err);
|
||||
}
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
*Byte 写函数
|
||||
*
|
||||
******************************************************************************/
|
||||
uint16_t EEPROM_WriteByte(uint32_t adr, uint8_t Data)
|
||||
{
|
||||
uint32_t err = EEPROM_ERR_SUCCESS;
|
||||
uint32_t data_mask;
|
||||
uint32_t r_data;
|
||||
uint32_t data_m0;
|
||||
uint32_t data_m1;
|
||||
uint32_t word_adr = adr & 0x3fc;
|
||||
uint32_t b_sit = adr & 0x3;
|
||||
|
||||
//先让高位为FF
|
||||
data_m0 = Data << b_sit * 8;
|
||||
data_mask = 0xFFFFFFFF << (b_sit + 1) * 8;
|
||||
//然后让低位为FF
|
||||
data_m1 = 0xFFFFFFFF >> (32 - b_sit * 8);
|
||||
data_m1 = data_m1 | data_m0 | data_mask;
|
||||
|
||||
r_data = EEPROM_Read(word_adr);
|
||||
r_data |= 0xFF << b_sit * 8;
|
||||
|
||||
data_m1 = data_m1 & r_data;
|
||||
|
||||
err = EEPROM_Write(word_adr, data_m1);
|
||||
|
||||
return (err);
|
||||
}
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
*Byte 读函数
|
||||
*
|
||||
******************************************************************************/
|
||||
uint8_t EEPROM_ReadByte(uint32_t adr)
|
||||
{
|
||||
uint32_t r_data;
|
||||
uint32_t word_adr = adr & 0x3fc;
|
||||
uint32_t b_sit = adr & 0x3;
|
||||
uint8_t data;
|
||||
|
||||
r_data = EEPROM_Read(word_adr);
|
||||
data = (r_data >> b_sit * 8) & 0xff;
|
||||
return (data);
|
||||
}
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
*写函数，写一个长度为bytesize，到eeprom
|
||||
*先把1k的eeprom读取放入sram，然后修改要写的位置，
|
||||
*这个函数是还可以再优化的
|
||||
******************************************************************************/
|
||||
uint16_t EERPOM_Writeup4byte(uint32_t adr, uint8_t *pData, uint32_t length)
|
||||
{
|
||||
uint8_t buf[512];
|
||||
uint8_t *pbuf;
|
||||
uint32_t e_adr;
|
||||
uint32_t e_sec;
|
||||
uint32_t e_offset;
|
||||
uint32_t a;
|
||||
uint32_t err = EEPROM_ERR_SUCCESS;
|
||||
|
||||
#ifdef IAR
|
||||
if (adr & 0x03)
|
||||
{
|
||||
err = EEPROM_ERR_INVALID_PARAM;
|
||||
return (err);
|
||||
}
|
||||
#endif
|
||||
|
||||
if ((adr + length) > 1024)
|
||||
{
|
||||
err = EEPROM_ADR_OverFlow;
|
||||
return (err);
|
||||
}
|
||||
|
||||
e_adr = adr + EEPROM_START_ADR;
|
||||
e_sec = e_adr & EEPROM_SECTOR_MASK;
|
||||
e_offset = e_adr & 0x1ff;
|
||||
|
||||
while (length > 0)
|
||||
{
|
||||
//如果起始地址不等于0，或者长度小于512 都进入这个循环
|
||||
if (e_offset || (length < 512))
|
||||
{
|
||||
pbuf = buf;
|
||||
a = 512 - e_offset;
|
||||
a = (length > a ? a : length);
|
||||
|
||||
memcpy(buf, (uint8_t *)e_sec, 512);
|
||||
memcpy(&buf[e_offset], pData, a);
|
||||
pData += a;
|
||||
length -= a;
|
||||
e_offset = 0;
|
||||
}
|
||||
else
|
||||
{ //如果起始地址等于0且长度大于512
|
||||
pbuf = pData;
|
||||
pData += 512;
|
||||
length -= 512;
|
||||
}
|
||||
err = Flash_EraseSector(e_sec);
|
||||
err = Flash_Program(e_sec, (uint8_t *)pbuf, 512); //然后写入flash
|
||||
e_sec += 0x200;
|
||||
}
|
||||
return err;
|
||||
}
|
||||
Reference in New Issue
Block a user