micro_climate/Drivers/HP203B/hp203b.c

#include "hp203b.h"
#include "anemometer_dev.h"
#include "frt_protocol.h"

void SOFT_IIC_Init(void)
{

  GPIO_InitTypeDef GPIO_InitStruct = {0};

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOC_CLK_ENABLE();
  __HAL_RCC_GPIOH_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();

//  /*Configure GPIO pin Output Level */
  GPIO_InitStruct.Pin = IIC_SCL_PIN;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_OD;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  
  HAL_GPIO_Init(IIC_SCL_PORT, &GPIO_InitStruct);

  GPIO_InitStruct.Pin = IIC_SDA_PIN;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_OD;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  
  HAL_GPIO_Init(IIC_SDA_PORT, &GPIO_InitStruct);
  
  HAL_GPIO_WritePin(IIC_SCL_PORT, IIC_SCL_PIN, GPIO_PIN_SET);
  HAL_GPIO_WritePin(IIC_SDA_PORT, IIC_SDA_PIN, GPIO_PIN_SET);
}

void HAL_Delay_us(uint32_t us)
{
    uint32_t tickstart = 0;
    tickstart = HAL_GetTick();
    while ((HAL_GetTick() - tickstart) < (us / 1000));
}

void IIC_SDA(uint8_t status)
{
    HAL_GPIO_WritePin(IIC_SDA_PORT, IIC_SDA_PIN, status);
    HAL_Delay_us(10);
}

void IIC_SCL(uint8_t status)
{
    HAL_GPIO_WritePin(IIC_SCL_PORT, IIC_SCL_PIN, status);
    HAL_Delay_us(10);
}


void SDA_OUT()
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  
  GPIO_InitStruct.Pin = IIC_SDA_PIN;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  
  HAL_GPIO_Init(IIC_SDA_PORT, &GPIO_InitStruct);
}

void SDA_IN()
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};

  GPIO_InitStruct.Pin = IIC_SDA_PIN;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
  
  HAL_GPIO_Init(IIC_SDA_PORT, &GPIO_InitStruct);
}

uint8_t IIC_SDA_Read(void)
{
    uint8_t temp = 1;
    HAL_Delay_us(10);
    temp = HAL_GPIO_ReadPin(IIC_SDA_PORT, IIC_SDA_PIN);
    return temp;
}


void IIC_Start(void)
{
    IIC_SCL(0);
    IIC_SDA(1);
    IIC_SCL(1);
    IIC_SDA(0);
    IIC_SCL(0);
}

void IIC_Stop(void)
{
    IIC_SCL(0);
    IIC_SDA(0);
    IIC_SCL(1);
    IIC_SDA(1);
    
}

void IIC_SentAck(uint8_t AckBit)
{
    IIC_SCL(0);
    IIC_SDA(AckBit);
    IIC_SCL(1);
    IIC_SCL(0);
    IIC_SDA(1);
}

uint8_t IIC_ReceiveAck(void)
{
    uint8_t AckBit;
    
    IIC_SCL(0);
    IIC_SDA(1);
    IIC_SCL(1);
    AckBit = IIC_SDA_Read();
    IIC_SCL(0);
    IIC_SDA(1);
    if(AckBit == 1){
        return 1;
    }
    else if(AckBit == 0)
        return 0;
}

void IIC_SendByte(uint8_t Byte) //<2F><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ֽں<D6BD><DABA><EFBFBD>
{
	for (uint8_t i = 0; i < 8; i ++)
	{
        IIC_SCL(0);
		(Byte&0x80)?IIC_SDA(1):IIC_SDA(0);
        Byte<<=1;osDelay(10);
		IIC_SCL(1);
	}
    IIC_SCL(0);
    IIC_SDA(1);
}

uint8_t IIC_ReceiveByte(uint8_t ack)  //<2F><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ֽں<D6BD><DABA><EFBFBD>
{
	uint8_t Byte = 0x00;

	for (uint8_t i = 0; i < 8; i ++)
	{
		IIC_SCL(1);
        Byte<<=1;
        if(IIC_SDA_Read()) Byte|=0x01;
        IIC_SCL(0);
	}
    
    if(ack)IIC_SentAck(1);
    else IIC_SentAck(0);
	return Byte;
}

/**************************** 
*<EFBFBD><EFBFBD><EFBFBD>ƣ<EFBFBD>set_mode
*<EFBFBD><EFBFBD><EFBFBD>ܣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ôӻ<EFBFBD>ģʽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
*<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
*
*
*<EFBFBD><EFBFBD><EFBFBD>أ<EFBFBD><EFBFBD><EFBFBD>
*****************************/
void hp203_set_mode()
{
    IIC_Start();
    IIC_SendByte(HP20X_ADDRESSCMD_WRITE);
    
    if(!IIC_ReceiveAck()){
        IIC_SendByte(HP20X_CONVERT_OSR1024);
        if(!IIC_ReceiveAck()){
            IIC_Stop();
        }
    }
    
}


/**************************** 
*<EFBFBD><EFBFBD><EFBFBD>ƣ<EFBFBD>Hp203bReadPressure
*<EFBFBD><EFBFBD><EFBFBD>ܣ<EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD>ѹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ρ<EFBFBD><EFBFBD>¶<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
*<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Press--<EFBFBD><EFBFBD>ѹֵ
*			
*			 
*<EFBFBD><EFBFBD><EFBFBD>أ<EFBFBD><EFBFBD><EFBFBD>
*****************************/
void Hp203bReadPressure(void)
{
    
    long Hp203b_Pressure = 0;
    uint8_t Hp203bPressure_Temp[4] = {0};
    //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ
	IIC_Start();
    IIC_SendByte(HP20X_ADDRESSCMD_WRITE);
    while(IIC_ReceiveAck()){}
    IIC_SendByte(HP20X_READ_P);
    
    while(IIC_ReceiveAck()){}
    IIC_Stop();
    
    
    //<2F><>ȡ
    IIC_Start();
    IIC_SendByte(HP20X_ADDRESSCMD_READ);
    while(IIC_ReceiveAck()){}
    Hp203bPressure_Temp[0] = IIC_ReceiveByte(0);
    Hp203bPressure_Temp[1] = IIC_ReceiveByte(0);
    Hp203bPressure_Temp[2] = IIC_ReceiveByte(0);
    Hp203bPressure_Temp[3] = IIC_ReceiveByte(0);
    
    IIC_Stop();
    
    Hp203b_Pressure = Hp203bPressure_Temp[0];
    Hp203b_Pressure <<= 8;
    Hp203b_Pressure |= Hp203bPressure_Temp[1];
    Hp203b_Pressure <<= 8;
    Hp203b_Pressure |= Hp203bPressure_Temp[2];
    
    Hp203b_Pressure = Hp203b_Pressure / 100;

    g_stMcs_Para.pressure = Hp203b_Pressure;
}