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适配2*2Mb Eerpom

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wu58430 2024-01-10 16:44:32 +08:00
parent 71829693ac
commit bc1d09501e
1 changed files with 30 additions and 20 deletions
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50
driver/eeprom.c
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@ -20,45 +20,55 @@
#include "driver/eeprom.h" #include "driver/eeprom.h"
#include "driver/i2c.h" #include "driver/i2c.h"
#include "driver/system.h" #include "driver/system.h"
uint8_t WRITE_SIZE=0;
uint8_t WRITE_SIZE = 0;
void EEPROM_ReadBuffer(uint32_t Address, void *pBuffer, uint8_t Size) { void EEPROM_ReadBuffer(uint32_t Address, void *pBuffer, uint8_t Size) {
if(Size==0)return; if (Size == 0)return;
I2C_Start(); I2C_Start();
uint8_t P0 = (Address / 0x10000) << 1; uint8_t IIC_ADD = 0xA0 | ((Address / 0x10000) << 1);
#ifdef ENABLE_EEPROM_4M
I2C_Write(0xA0|P0); if (Address >= 0x20000)
{IIC_ADD = 0xA8 | (((Address - 0x20000) / 0x10000) << 1);
Address-=0x20000;
I2C_Write((Address >> 8) & 0xFF); }
I2C_Write((Address >> 0) & 0xFF); #endif
I2C_Write(IIC_ADD);
I2C_Write((Address >> 8) & 0xFF);
I2C_Write((Address >> 0) & 0xFF);
I2C_Start(); I2C_Start();
I2C_Write((0xA0|P0)+1); I2C_Write(IIC_ADD + 1);
I2C_ReadBuffer(pBuffer, Size); I2C_ReadBuffer(pBuffer, Size);
I2C_Stop(); I2C_Stop();
} }
void EEPROM_WriteBuffer(uint32_t Address, const void *pBuffer,uint8_t WRITE_SIZE) { void EEPROM_WriteBuffer(uint32_t Address, const void *pBuffer, uint8_t WRITE_SIZE) {
if (pBuffer == NULL ) if (pBuffer == NULL)
return; return;
uint8_t buffer[128]; uint8_t buffer[128];
EEPROM_ReadBuffer(Address, buffer, WRITE_SIZE); EEPROM_ReadBuffer(Address, buffer, WRITE_SIZE);
if (memcmp(pBuffer, buffer, WRITE_SIZE) != 0) { if (memcmp(pBuffer, buffer, WRITE_SIZE) != 0) {
uint8_t P0 = (Address / 0x10000) << 1; uint8_t IIC_ADD=0xA0 | ((Address / 0x10000) << 1);
I2C_Start(); I2C_Start();
if(Address<0x10000) I2C_Write(0xA0); #ifdef ENABLE_EEPROM_4M
else I2C_Write(0xA0 | P0); if(Address>=0x20000)
IIC_ADD = 0xA8 | (((Address - 0x20000) / 0x10000) << 1);
I2C_Write((Address >> 8) & 0xFF); #endif
I2C_Write((Address >> 0) & 0xFF); I2C_Write(IIC_ADD);
I2C_Write(((Address>=0x20000?Address:Address-0x20000) >> 8) & 0xFF);
I2C_Write(((Address>=0x20000?Address:Address-0x20000) >> 0) & 0xFF);
I2C_WriteBuffer(pBuffer, WRITE_SIZE); I2C_WriteBuffer(pBuffer, WRITE_SIZE);
I2C_Stop(); I2C_Stop();
} }
SYSTEM_DelayMs(11); SYSTEM_DelayMs(8);
} }