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适配2*2Mb Eerpom

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This commit is contained in:
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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38
driver/eeprom.c
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@ -20,21 +20,29 @@
#include "driver/eeprom.h"
#include "driver/i2c.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) {
if(Size==0)return;
if (Size == 0)return;
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;
}
#endif
I2C_Write(IIC_ADD);
I2C_Write((Address >> 8) & 0xFF);
I2C_Write((Address >> 0) & 0xFF);
I2C_Start();
I2C_Write((0xA0|P0)+1);
I2C_Write(IIC_ADD + 1);
I2C_ReadBuffer(pBuffer, Size);
@ -42,23 +50,25 @@ void EEPROM_ReadBuffer(uint32_t Address, void *pBuffer, uint8_t Size) {
}
void EEPROM_WriteBuffer(uint32_t Address, const void *pBuffer,uint8_t WRITE_SIZE) {
if (pBuffer == NULL )
void EEPROM_WriteBuffer(uint32_t Address, const void *pBuffer, uint8_t WRITE_SIZE) {
if (pBuffer == NULL)
return;
uint8_t buffer[128];
EEPROM_ReadBuffer(Address, buffer, WRITE_SIZE);
if (memcmp(pBuffer, buffer, WRITE_SIZE) != 0) {
uint8_t P0 = (Address / 0x10000) << 1;
uint8_t IIC_ADD=0xA0 | ((Address / 0x10000) << 1);
I2C_Start();
if(Address<0x10000) I2C_Write(0xA0);
else I2C_Write(0xA0 | P0);
I2C_Write((Address >> 8) & 0xFF);
I2C_Write((Address >> 0) & 0xFF);
#ifdef ENABLE_EEPROM_4M
if(Address>=0x20000)
IIC_ADD = 0xA8 | (((Address - 0x20000) / 0x10000) << 1);
#endif
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_Stop();
}
SYSTEM_DelayMs(11);
SYSTEM_DelayMs(8);
}