STM32F1 硬件I2C驱动DAC(LTC2605)

#include "i2c_drive_mcp.h"

#define I2C_Speed 100000

#define Master_Address 0x0A //全部通道

static void I2C_GPIO_Config(void)
{
   GPIO_InitTypeDef GPIO_InitStructure;

   /*Enable the Clock*/
   RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1,ENABLE);

   /* Config :PB6-I2C1_SCL¡¢PB7-I2C1_SDA*/
   GPIO_InitStructure.GPIO_Pin=GPIO_Pin_6 | GPIO_Pin_7;
   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
   GPIO_Init(GPIOB, &GPIO_InitStructure);

}

static void I2C_Mode_Config(void)
{

   I2C_InitTypeDef I2C_InitStructure;
   I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
   I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
   I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
   I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
   I2C_InitStructure.I2C_OwnAddress1=Master_Address;
   I2C_InitStructure.I2C_ClockSpeed = I2C_Speed;

   I2C_Init(I2C1, &I2C_InitStructure);
   //I2C_DeInit(I2C2);
   I2C_Cmd(I2C1, ENABLE);
   I2C_AcknowledgeConfig(I2C1, ENABLE);

}

void I2C_LTC2605_Init(void)
{
I2C_GPIO_Config();
I2C_Mode_Config();
}

void GeneralCall_Reset(void)
{
I2C_GenerateSTART(I2C1, ENABLE);
   while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));

   I2C_Send7bitAddress(I2C1, 0x20, I2C_Direction_Transmitter);
   while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));

   I2C_SendData(I2C1, 0x06);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

   I2C_GenerateSTOP(I2C1, ENABLE);

}

u8 Config_Write(void)
{

   I2C_GenerateSTART(I2C1, ENABLE);

   while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));

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   I2C_Send7bitAddress(I2C1, 0x10, I2C_Direction_Transmitter);
   while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));

   I2C_SendData(I2C1, 0x80);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

   I2C_GenerateSTOP(I2C1, ENABLE);
   return 0;
}

u8 read_command(void)
{
   u8 Data[3],result=0;

   while(I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY));

   I2C_GenerateSTART(I2C1, ENABLE);

while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));

   I2C_Send7bitAddress(I2C1, 0xc1, I2C_Direction_Receiver);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));

   Data[0]=I2C_ReceiveData(I2C1);
   while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_RECEIVED));

   Data[1]=I2C_ReceiveData(I2C1);
   while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_RECEIVED));

   Data[2]=I2C_ReceiveData(I2C1);

   I2C_AcknowledgeConfig(I2C1, DISABLE);
       I2C_GenerateSTOP(I2C1, ENABLE);
   if(((Data[0]>>6)&0x01)!=0x01)
   {
           result=1;
}

   if(((Data[0]>>7)&0x01)!=0x01)
   {
           result=2;
}
   I2C_AcknowledgeConfig(I2C1, ENABLE);
   return result;
}

u8 Write_Temp_Value(u16 temp_input)
{
u8 Data[2];

   I2C_GenerateSTART(I2C1, ENABLE);
   while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));

   I2C_Send7bitAddress(I2C1, 0x20, I2C_Direction_Transmitter);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED))

   Data[0]= temp_input&0x00ff;
Data[1]= (temp_input>>8)&0x00ff;

   I2C_SendData(I2C1,0x22);
   while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

   I2C_SendData(I2C1,Data[1]);
   while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

   I2C_SendData(I2C1,Data[0]);
   while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

   I2C_GenerateSTOP(I2C1, ENABLE);
   return 0;
}


u8 Write_Pre_In(u16 pre_In_input)
{
   u8 Data[2];

   Data[0]= pre_In_input&0x00ff;
Data[1]= (pre_In_input>>8)&0x00ff;

   I2C_SendData(I2C1,0x21);
   while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

   I2C_SendData(I2C1,Data[1]);
   while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

   I2C_SendData(I2C1,Data[0]);
   while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

   I2C_GenerateSTOP(I2C1, ENABLE);
   return 0;
}

u8 Write_Pre_Out(u16 pre_Out_input)
{
u8 Data[2];

   Data[0]= pre_Out_input&0x00ff;
Data[1]= (pre_Out_input>>8)&0x00ff;

   I2C_SendData(I2C1,0x20);
   while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

   I2C_SendData(I2C1,Data[1]);
   while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

   I2C_SendData(I2C1,Data[0]);
   while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

   I2C_GenerateSTOP(I2C1, ENABLE);
   return 0;
}

int main(void){

I2C_GPIO_Config();
I2C_Mode_Config();

Write_Temp_Value(65535);

}

STM32F1 硬件I2C驱动DAC(LTC2605)

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