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1.5wuling_zhuanjietou/SYSTEM/24cxx.c

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[五菱1.5代，同步奇瑞]
2024-10-17 01:06:51 +00:00
#include "24cxx.h"
#include "bsp_i2c_gpio.h"
#include "led.h"
//<2F><>ʼ<EFBFBD><CABC>IIC
void ee_Init(void)
{
bsp_InitI2C();
}
//<2F><>AT24CXXָ<58><D6B8><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7>ȡһ<C8A1><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//ReadAddr :<3A><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD>ַ
//<2F><><EFBFBD><EFBFBD>ֵ <20><><EFBFBD><EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
u8 ee_ReadOneByte(u16 ReadAddr)
{
u8 temp = 0;
IIC_Start();
if (EE_TYPE > AT24C16) {
IIC_Send_Byte(EE_DEV_ADDR|EEPROM_I2C_WR);//<2F><><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD>
IIC_Wait_Ack();
IIC_Send_Byte(ReadAddr / 256); //<2F><><EFBFBD>͸ߵ<CDB8>ַ
} else IIC_Send_Byte(EE_DEV_ADDR|EEPROM_I2C_WR + ((ReadAddr / 256) << 1)); //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ0xA0,д<><D0B4><EFBFBD><EFBFBD>
IIC_Wait_Ack();
IIC_Send_Byte(ReadAddr % 256); //<2F><><EFBFBD>͵͵<CDB5>ַ
IIC_Wait_Ack();
IIC_Start();
if (1)IIC_Send_Byte(EE_DEV_ADDR|EEPROM_I2C_RD); //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģʽ
else IIC_Send_Byte(EE_DEV_ADDR|EEPROM_I2C_RD + ((ReadAddr / 256) << 1)); //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģʽ
IIC_Wait_Ack();
temp = IIC_Read_Byte(1);
IIC_Stop();//<2F><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>ֹͣ<CDA3><D6B9><EFBFBD><EFBFBD>
return temp;
}
//<2F><>AT24CXXָ<58><D6B8><EFBFBD><EFBFBD>ַдһ<D0B4><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//WriteAddr:д<><D0B4><EFBFBD><EFBFBD><EFBFBD>ݵ<EFBFBD>Ŀ<EFBFBD>ĵ<EFBFBD>ַ
//data :Ҫд<D2AA><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
void ee_WriteOneByte(u16 WriteAddr, u8 data)
{
IIC_Start();
if (EE_TYPE > AT24C16) {
IIC_Send_Byte(EE_DEV_ADDR|EEPROM_I2C_WR);
IIC_Wait_Ack();
IIC_Send_Byte(WriteAddr / 256); //<2F><><EFBFBD>͸ߵ<CDB8>ַ
} else IIC_Send_Byte(EE_DEV_ADDR|EEPROM_I2C_WR + ((WriteAddr / 256) << 1));
IIC_Wait_Ack();
IIC_Send_Byte(WriteAddr % 256); //<2F><><EFBFBD>͵͵<CDB5>ַ
IIC_Wait_Ack();
IIC_Send_Byte(data);
IIC_Wait_Ack();
IIC_Stop();//<2F><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>ֹͣ<CDA3><D6B9><EFBFBD><EFBFBD>
Delay_MS(6);
}
#if 1
//<2F><>EEPROMд<4D><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD>
uint8_t ee_WriteBytes(uint8_t *_pWriteBuf, uint16_t _usAddress, uint16_t _usSize)
{
uint16_t i, m;
uint16_t addr;
addr = _usAddress;
for (i = 0; i < _usSize; i++) {
//<2F><><EFBFBD><EFBFBD>һ<EFBFBD>λ<EFBFBD><CEBB>ߵ<EFBFBD>ַ<EFBFBD><D6B7><EFBFBD>뵽8<EBB5BD><38>Ҫ<EFBFBD><D2AA><EFBFBD>·<EFBFBD><C2B7><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD>źź<C5BA>EEPROM<4F><4D>ַ
//Ϊ<>˽<EFBFBD><CBBD><EFBFBD>8<EFBFBD><38>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
if (i == 0 || (addr % EE_PAGE_SIZE) == 0) {
if (i != 0) {
IIC_Stop();
Delay_MS(6);
}
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC>ַ
IIC_Start();
//<2F><><EFBFBD><EFBFBD><EFBFBD>豸д<E8B1B8><D0B4>ַ
if (EE_TYPE > AT24C16) {
IIC_Send_Byte(EE_DEV_ADDR|EEPROM_I2C_WR);
if (IIC_Wait_Ack() != 0) {
goto cmd_fail;
}
IIC_Send_Byte(addr / 256); //<2F><><EFBFBD>͸ߵ<CDB8>ַ
} else IIC_Send_Byte((EE_DEV_ADDR + ((addr / 256) << 1)) | EEPROM_I2C_WR);
//<2F>ȴ<EFBFBD><C8B4>ӻ<EFBFBD>Ӧ<EFBFBD><D3A6>
if (IIC_Wait_Ack() != 0) {
goto cmd_fail;
}
//EEPROMӦ<4D><D3A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>EEPROM<4F><4D><EFBFBD>ڲ<EFBFBD><DAB2>洢<EFBFBD><E6B4A2><EFBFBD><EFBFBD>ַ
IIC_Send_Byte((uint8_t)addr);
//<2F>ȴ<EFBFBD><C8B4>ӻ<EFBFBD>Ӧ<EFBFBD><D3A6>
if (IIC_Wait_Ack() != 0) {
goto cmd_fail;
}
}
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
IIC_Send_Byte(_pWriteBuf[i]);
//<2F>ȴ<EFBFBD>Ӧ<EFBFBD><D3A6>
if (IIC_Wait_Ack() != 0) {
goto cmd_fail;
}
//д<><D0B4><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7>1
addr++;
}
IIC_Stop();
return 1;
cmd_fail:
IIC_Stop();
return 0;
}
uint8_t ee_ReadBytes(uint8_t *_pReadBuf, uint16_t _usAddress, uint16_t _usSize)
{
uint16_t i;
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC>ַ
IIC_Start();
//<2F><><EFBFBD><EFBFBD><EFBFBD>豸д<E8B1B8><D0B4>ַ
if (EE_TYPE > AT24C16) {
IIC_Send_Byte(EE_DEV_ADDR);
if (IIC_Wait_Ack() != 0) {
goto cmd_fail;
}
IIC_Send_Byte(_usAddress / 256); //<2F><><EFBFBD>͸ߵ<CDB8>ַ
} else IIC_Send_Byte((EE_DEV_ADDR + ((_usAddress / 256) << 1)) | EEPROM_I2C_WR);
if (IIC_Wait_Ack() != 0) {
goto cmd_fail;
}
IIC_Send_Byte((uint8_t)_usAddress);
if (IIC_Wait_Ack() != 0) {
goto cmd_fail;
}
IIC_Start();
if (EE_TYPE > AT24C16) IIC_Send_Byte(EE_DEV_ADDR | EEPROM_I2C_RD);
else IIC_Send_Byte((EE_DEV_ADDR + ((_usAddress / 256) << 1)) | EEPROM_I2C_RD);
if (IIC_Wait_Ack() != 0) {
goto cmd_fail;
}
for (i = 0; i < _usSize; i++) {
/* ÿ<><C3BF><EFBFBD><EFBFBD>1<EFBFBD><31><EFBFBD>ֽں<D6BD><DABA><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>Ack<63><6B> <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ֽڲ<D6BD><DAB2><EFBFBD>ҪAck<63><6B><EFBFBD><EFBFBD>Nack */
_pReadBuf[i] = IIC_Read_Byte(i != _usSize - 1?1:0);
}
IIC_Stop();
return 1;
cmd_fail:
IIC_Stop();
return 0;
}
#endif
#if 0
static void IIC1_Start(void); //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD>ź<EFBFBD>
static void IIC1_Stop(void); //<2F><><EFBFBD><EFBFBD>ֹͣ<CDA3>ź<EFBFBD>
static void IIC1_Write_Byte(u8 dat);//<2F><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ֽ<EFBFBD>
static u8 IIC1_Read_Byte(unsigned char ack);//<2F><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ֽ<EFBFBD>
static u8 IIC1_Wait_Ack(void);//<2F>ȴ<EFBFBD>ACK<43>ź<EFBFBD>
static void IIC1_Ack(void);//<2F><><EFBFBD><EFBFBD>ACK<43>ź<EFBFBD>
static void IIC1_NAck(void);//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ACK<43>ź<EFBFBD>
void I2C_delay(uint16_t n)
{
u8 i = 100 * n; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ż<EFBFBD><C5BB>ٶ<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>͵<EFBFBD>5<EFBFBD><35><EFBFBD><EFBFBD>д<EFBFBD><D0B4>
while (i) {
i--;
}
}
//<2F><>ʼ<EFBFBD><CABC>IIC
void AT24cxx_init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); /* <20><><EFBFBD><EFBFBD>GPIOʱ<4F><CAB1> */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_11; //SDA,SCL
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
IIC_SDA1;
IIC_SCL1;
}
//<2F><>AT24CXXָ<58><D6B8><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7>ȡһ<C8A1><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//ReadAddr :<3A><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD>ַ
//<2F><><EFBFBD><EFBFBD>ֵ <20><><EFBFBD><EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
u8 AT24cxx_ReadOneByte(u16 ReadAddr)
{
u8 temp = 0;
IIC1_Start();
if (EE_TYPE > AT24C16) {
IIC1_Write_Byte(0xa0);//<2F><><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD>
IIC1_Wait_Ack();
IIC1_Write_Byte(ReadAddr / 256); //<2F><><EFBFBD>͸ߵ<CDB8>ַ
} else IIC1_Write_Byte(0xa0 + ((ReadAddr / 256) << 1)); //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ0xA0,д<><D0B4><EFBFBD><EFBFBD>
IIC1_Wait_Ack();
IIC1_Write_Byte(ReadAddr % 256); //<2F><><EFBFBD>͵͵<CDB5>ַ
IIC1_Wait_Ack();
IIC1_Start();
if (EE_TYPE > AT24C16)IIC1_Write_Byte(0xa1); //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģʽ
else IIC1_Write_Byte(0xa1 + ((ReadAddr / 256) << 1)); //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģʽ
IIC1_Wait_Ack();
temp = IIC1_Read_Byte(1);
IIC1_Stop();//<2F><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>ֹͣ<CDA3><D6B9><EFBFBD><EFBFBD>
return temp;
}
//<2F><>AT24CXXָ<58><D6B8><EFBFBD><EFBFBD>ַдһ<D0B4><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//WriteAddr:д<><D0B4><EFBFBD><EFBFBD><EFBFBD>ݵ<EFBFBD>Ŀ<EFBFBD>ĵ<EFBFBD>ַ
//data :Ҫд<D2AA><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
void AT24cxx_WriteOneByte(u16 WriteAddr, u8 data)
{
IIC1_Start();
if (EE_TYPE > AT24C16) {
IIC1_Write_Byte(0xa0);
IIC1_Wait_Ack();
IIC1_Write_Byte(WriteAddr / 256); //<2F><><EFBFBD>͸ߵ<CDB8>ַ
} else IIC1_Write_Byte(0xa0 + ((WriteAddr / 256) << 1));
IIC1_Wait_Ack();
IIC1_Write_Byte(WriteAddr % 256); //<2F><><EFBFBD>͵͵<CDB5>ַ
IIC1_Wait_Ack();
IIC1_Write_Byte(data);
IIC1_Wait_Ack();
IIC1_Stop();//<2F><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>ֹͣ<CDA3><D6B9><EFBFBD><EFBFBD>
I2C_delay(2);
}
//<2F><>AT24CXXָ<58><D6B8><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7>ʼд<CABC><D0B4>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD>ȵ<EFBFBD><C8B5><EFBFBD><EFBFBD><EFBFBD>
//<2F>ú<EFBFBD><C3BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><D0B4>16λ<36><CEBB>32λ<32><CEBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//WriteAddr:<3A><>ʼд<CABC><D0B4><EFBFBD>ĵ<EFBFBD>ַ
//data :Ҫд<D2AA><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//len :Ҫд<D2AA><D0B4><EFBFBD><EFBFBD><EFBFBD>ݵij<DDB5><C4B3><EFBFBD>2<EFBFBD><32>4
void AT24cxx_WriteLenByte(u16 WriteAddr, u32 data, u8 len)
{
u8 i;
for (i = 0; i < len; i++) {
AT24cxx_WriteOneByte(WriteAddr + i, (data >> (8 * i)) & 0xff);
}
}
//<2F><>AT24CXXָ<58><D6B8><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD>ȵ<EFBFBD><C8B5><EFBFBD><EFBFBD><EFBFBD>
//<2F>ú<EFBFBD><C3BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڶ<EFBFBD><DAB6><EFBFBD>16bit<69><74><EFBFBD><EFBFBD>32bit<69><74><EFBFBD><EFBFBD><EFBFBD><EFBFBD>.
//ReadAddr :<3A><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD>ַ
//<2F><><EFBFBD><EFBFBD>ֵ :<3A><><EFBFBD><EFBFBD>
//len :Ҫ<><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵij<DDB5><C4B3><EFBFBD>2,4
u32 AT24cxx_ReadLenByte(u16 ReadAddr, u8 len)
{
u8 i;
u32 temp = 0;
for (i = 0; i < len; i++) {
temp <<= 8;
temp += AT24cxx_ReadOneByte(ReadAddr + len - i - 1);
}
return temp;
}
//<2F><>AT24CXXָ<58><D6B8><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7>ʼд<CABC><D0B4>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD>ȵ<EFBFBD><C8B5><EFBFBD><EFBFBD><EFBFBD>
//<2F>ú<EFBFBD><C3BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><D0B4>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD>
//WriteAddr:<3A><>ʼд<CABC><D0B4><EFBFBD>ĵ<EFBFBD>ַ
//buf :<3A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>׵<EFBFBD>ַ
//len :Ҫд<D2AA><D0B4><EFBFBD><EFBFBD><EFBFBD>ݵĸ<DDB5><C4B8><EFBFBD>
void AT24cxx_Write(u16 WriteAddr, u8 *buf, u16 len)
{
u16 i;
for (i = 0; i < len; i++) {
IWDG_Feed();
AT24cxx_WriteOneByte(WriteAddr, *buf);
WriteAddr++;
buf++;
}
}
//<2F><>AT24CXXָ<58><D6B8><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD>ȵ<EFBFBD><C8B5><EFBFBD><EFBFBD><EFBFBD>
//<2F>ú<EFBFBD><C3BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڶ<EFBFBD><DAB6><EFBFBD>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD>
//ReadAddr:<3A><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵĵ<DDB5>ַ
//len :Ҫд<D2AA><D0B4><EFBFBD><EFBFBD><EFBFBD>ݵĸ<DDB5><C4B8><EFBFBD>
//buf :<3A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>׵<EFBFBD>ַ
void AT24cxx_Read(u16 ReadAddr, u8 *buf, u16 len)
{
while (len--) {
IWDG_Feed();
*buf++ = AT24cxx_ReadOneByte(ReadAddr++);
}
}
//<2F><><EFBFBD><EFBFBD>AT24CXX<58>Ƿ<EFBFBD><C7B7><EFBFBD><EFBFBD><EFBFBD>
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>24XX<58>ĵ<EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>ַ(0)<29><><EFBFBD>洢<EFBFBD><E6B4A2>־<EFBFBD><D6BE>.
//<2F><><EFBFBD><EFBFBD>1<EFBFBD><31><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD><CAA7>
//<2F><><EFBFBD><EFBFBD>0<EFBFBD><30><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɹ<EFBFBD>
u8 AT24cxx_Check(void)
{
u8 temp1, temp2;
AT24cxx_WriteOneByte(0x010, 0x55);
temp1 = AT24cxx_ReadOneByte(0x010); //<2F><><EFBFBD><EFBFBD>ÿ<EFBFBD>ο<EFBFBD><CEBF><EFBFBD><EFBFBD><EFBFBD>дAT24CXX
temp2 = temp1;
if (temp2 == 0x55)return 0;
else {
AT24cxx_WriteOneByte(0x010, 0x55);
temp1 = AT24cxx_ReadOneByte(0x010);
temp2 = temp1;
if (temp2 == 0x55)return 0;
}
return 1;
}
//<2F><><EFBFBD><EFBFBD>IIC<49><43>ʼ<EFBFBD>ź<EFBFBD>
static void IIC1_Start(void)
{
IIC_SDA1;
IIC_SCL1;
I2C_delay(4);
IIC_SDA0;
I2C_delay(4);
IIC_SCL0;
I2C_delay(4);
}
//<2F><><EFBFBD><EFBFBD>IICֹͣ<CDA3>ź<EFBFBD>
static void IIC1_Stop(void)
{
IIC_SDA0;
IIC_SCL1;
I2C_delay(2);
IIC_SDA1;
I2C_delay(4);
// IIC_SCL0;
}
//<2F><><EFBFBD><EFBFBD>1<EFBFBD><31><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><D3A6>ʧ<EFBFBD>ܣ<EFBFBD><DCA3><EFBFBD><EFBFBD><EFBFBD>0<EFBFBD><30><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><D3A6><EFBFBD>ɹ<EFBFBD>
static u8 IIC1_Wait_Ack(void)
{
u8 i;
SDA_IN();
IIC_SCL0;
I2C_delay(2);
IIC_SCL1;
I2C_delay(2);
while (Read_IIC_SDA()) {
i++;
if (i > 250) {
IIC1_Stop();
return 1;
}
}
IIC_SCL0;
I2C_delay(2);
return 0;
}
//<2F><><EFBFBD><EFBFBD>ACKӦ<4B><D3A6>
static void IIC1_Ack(void)
{
IIC_SCL0;
SDA_OUT();
IIC_SDA0;
I2C_delay(2);
IIC_SCL1;
I2C_delay(2);
IIC_SCL0;
}
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ACKӦ<4B><D3A6>
static void IIC1_NAck(void)
{
IIC_SCL0;
SDA_OUT();
IIC_SDA1;
I2C_delay(2);
IIC_SCL1;
I2C_delay(2);
IIC_SCL0;
}
//IIC<49><43><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ֽ<EFBFBD>
//<2F><><EFBFBD>شӻ<D8B4><D3BB><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><D3A6>
//0<><30><EFBFBD><EFBFBD>Ӧ<EFBFBD><D3A6>
//1<><31><EFBFBD><EFBFBD>Ӧ<EFBFBD><D3A6>
void IIC1_Write_Byte(u8 dat)
{
u8 t;
SDA_OUT();
I2C_delay(2);
for (t = 0; t < 8; t++) {
IIC_SCL0;
if (dat & 0x80) {
IIC_SDA1;
} else {
IIC_SDA0;
}
I2C_delay(2);
IIC_SCL1;
dat <<= 1;
I2C_delay(2);
}
IIC_SCL0;
I2C_delay(2);
}
//<2F><>1<EFBFBD><31><EFBFBD>ֽڣ<D6BD>ack=0ʱ<30><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ACK,ack=1<><31><EFBFBD><EFBFBD><EFBFBD><EFBFBD>NACK
u8 IIC1_Read_Byte(unsigned char ack)
{
u8 i, receive;
SDA_IN();//SDA<44><41>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>
IIC_SDA0;
I2C_delay(2);
for (i = 0; i < 8; i++) {
IIC_SCL0;
I2C_delay(2);
IIC_SCL1;
receive <<= 1;
I2C_delay(2);
if (Read_IIC_SDA())receive++;
I2C_delay(2);
}
IIC_SDA1;
I2C_delay(2);
IIC_SCL0;
I2C_delay(2);
if (!ack)
IIC1_Ack();
else
IIC1_NAck();
return receive;
}
#endif
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