int32_t screenSpin::Savestr(char* Data)
{
for(int i=0;i<strlen(Data);i++)
{
Writebyte((int)Data[i]);
}
}
/*
Write n byte data to EEPROM
*/
unsigned char Write_EEPROM_Block(unsigned char DevAddr,unsigned int MemAddr,unsigned char *p,unsigned char num)
{
unsigned char i;
/* Start TWI */
Start();
Wait();
if(TestACK()!=START)
{
return 0;
}
/* Write Device Address */
Writebyte((DevAddr<<1)|(Write));
Wait();
if(TestACK()!=MT_SLA_ACK)
{
return 0;
}
/* Write Memory Address High Byte) */
Writebyte(MemAddr>>8);
Wait();
if(TestACK()!=MT_DATA_ACK)
{
return 0;
}
/* Write Memory Address Low Byte) */
Writebyte(MemAddr&0xff);
Wait();
if(TestACK()!=MT_DATA_ACK)
{
return 0;
}
/* Write Data to EEPROM */
for(i = 0;i < num;i++){
Writebyte(*(p+i));
Wait();
if(TestACK()!=MT_DATA_ACK)
{
return 0;
}
}
Stop();
_delay_ms(10);
return 1;
}
/*
Write 1 byte data to EEPROM
*/
unsigned char WriteEEPROM(unsigned char DevAddr,unsigned int MemAddr,unsigned char data)
{
/* Start TWI */
Start();
Wait();
if(TestACK()!=START)
{
return 0;
}
/* Write Device Address */
Writebyte((DevAddr<<1)|(Write));
Wait();
if(TestACK()!=MT_SLA_ACK)
{
return 0;
}
/* Write Memory Address High Byte) */
Writebyte(MemAddr>>8);
Wait();
if(TestACK()!=MT_DATA_ACK)
{
return 0;
}
/* Write Memory Address Low Byte) */
Writebyte(MemAddr&0xff);
Wait();
if(TestACK()!=MT_DATA_ACK)
{
return 0;
}
/* Write Data to EEPROM */
Writebyte(data);
Wait();
if(TestACK()!=MT_DATA_ACK)
{
return 0;
}
Stop();
_delay_ms(10);
return 1;
}
/*
Write n byte data to EEPROM
*/
unsigned char Read_EEPROM_Block(unsigned char DevAddr,unsigned int MemAddr,unsigned char *p,unsigned char num)
{
//unsigned char data;
unsigned char i = 0;
DevAddr = (DevAddr<<1)|(Write);//????????????????
/* Start TWI */
Start();
Wait();
if(TestACK()!=START)
{
return 0;
}
/* Write Device Address */
Writebyte(DevAddr);//SLA+W
Wait();
if(TestACK()!=MT_SLA_ACK)
{
return 0;
}
/* Write Memory Address High Byte) */
Writebyte(MemAddr>>8);
Wait();
if(TestACK()!=MT_DATA_ACK)
{
return 0;
}
/* Write Memory Address Low Byte) */
Writebyte(MemAddr&0xff);
Wait();
if(TestACK()!=MT_DATA_ACK)
{
return 0;
}
/* Restart */
Start();
Wait();
if(TestACK()!=ReStart)
{
return 0;
}
/* Write Device Address(read format) */
Writebyte(DevAddr + 1);//SLW+R
Wait();
if(TestACK()!=MR_SLA_ACK)//
{
return 0;
}
/* Read MultiByte From EEPROM */
for(i = 0;i < (num-1);i++){
/* Receive Data(1 byte only) */
SetACK();
Wait();
if(TestACK()!=MR_DATA_ACK)//
{
return 0;
}
*(p+i) = TWDR;
//to do (ACK)????
}
ResetACK();
Wait();
if(TestACK()!=MR_DATA_NACK)//
{
return 0;
}
*(p+num-1) = TWDR;
Stop();
_delay_ms(5);
return 1;
}
/*
Read 1 byte data from EEPROM
*/
unsigned char ReadEEPROM(unsigned char DevAddr,unsigned int MemAddr)
{
unsigned char data;
/* Start TWI */
Start();
Wait();
if(TestACK()!=START)
{
return 0;
}
/* Write Device Address */
Writebyte((DevAddr<<1)|(Write));//SLA+W
Wait();
if(TestACK()!=MT_SLA_ACK)
{
return 0;
}
/* Write Memory Address High Byte) */
Writebyte(MemAddr>>8);
Wait();
if(TestACK()!=MT_DATA_ACK)
{
return 0;
}
/* Write Memory Address Low Byte) */
Writebyte(MemAddr&0xff);
Wait();
if(TestACK()!=MT_DATA_ACK)
{
return 0;
}
/* Restart */
Start();
Wait();
if(TestACK()!=ReStart)
{
return 0;
}
/* Write Device Address(read format) */
Writebyte((DevAddr<<1)|(Read));//SLW+R
Wait();
if(TestACK()!=MR_SLA_ACK)//
{
return 0;
}
/* added for certian purpose */
TWCR=(1<<TWINT)|(1<<TWEN);
Wait();
/* Receive Data(1 byte only) */
data = TWDR;
/* Stop TWI */
Stop();
_delay_ms(5);
return data;
}
