#include "PressureSensor.h"
#include "string.h"
#include "gpio.h"
#include "stdio.h"
#include "ac780x.h"


#define CPS135B_ADDR     (0x6D)

static uint8_t  iic_error_count = 0;
static uint8_t  iic_exception = 0;
static uint8_t  iic_exception2 = 0;
static float   cps_pressure = 0;
static float   cps_temperature = 0;
static uint32_t ret_status = 0;


/**
* @prototype I2C_ParaInit(void)
*
* @param[in] void
* @return	 void
*
* @brief  	 初始化I2C0.
*/
void I2C0_ParaInit(void)
{
	I2C_ConfigType i2cConfig;
	
	/*初始化引脚功能为I2C.*/
	GPIO_SetFunc(GPIOA, GPIO_PIN0, GPIO_FUN3);//I2C0_SCL
	GPIO_SetFunc(GPIOA, GPIO_PIN1, GPIO_FUN3);//I2C0_sda
	
	/*清零结构体变量.*/
	memset(&i2cConfig, 0x00, sizeof(i2cConfig));
	
	/*无论是主机还是从机模式都需要配置的参数.*/
	i2cConfig.mode				= I2C_MASTER;/*设置主从机模式.*/
	i2cConfig.extAddrEn			= DISABLE;/*10bit扩展地址禁能.*/
	i2cConfig.dmaRxEn			= DISABLE;/*设置DMA接收数据.*/
	i2cConfig.dmaTxEn			= DISABLE;/*设置DMA发送数据.*/
	i2cConfig.interruptEn		= DISABLE;/*I2C中断,BND/SAMF/ARBLOST.*/
	i2cConfig.nackInterruptEn	= DISABLE;/*NACK中断.*/
	i2cConfig.ssInterruptEn		= DISABLE;/*总线start或stop中断.*/
	i2cConfig.i2cEn				= ENABLE;/*使能模块.*/
	i2cConfig.callBack			= NULL;/*中断回调函数.*/
	
	/*主机模式需要配置的参数,配置成从机模式可忽略.*/
	i2cConfig.masterConfig.sampleCnt = 9;/*设置波特率为100Kbps,bandrate=(24M/(10*12*2))=100Kbps.*/
	i2cConfig.masterConfig.stepCnt	 = 11;
	i2cConfig.masterConfig.ARBEn 	 = ENABLE;/*设置主机仲裁功能.*/
	i2cConfig.masterConfig.SYNCEn	 = ENABLE;/*设置主机SCL同步功能.*/
	
	/*从机模式需要配置的参数,配置成主机模式可忽略.*/
	
	//i2cConfig.slaveConfig.slaveAddr		 = AT24C02_DEV_ADDR;/*从机地址.*/
	//i2cConfig.slaveConfig.slaveRangeAddr = 0;/*从机范围地址.*/
	//i2cConfig.slaveConfig.glitchFilterCnt= 0;/*毛刺过滤.*/
	//i2cConfig.slaveConfig.stretchEn		 = DISABLE;/*从机SCL延伸功能.*/
	//i2cConfig.slaveConfig.rangeAddrEn	 = DISABLE;/*禁能范围地址.*/
	//i2cConfig.slaveConfig.monitorEn		 = DISABLE;/*禁能从机监测功能.*/
	//i2cConfig.slaveConfig.generalCallEn	 = DISABLE;/*从机SCL广播地址.*/
	//i2cConfig.slaveConfig.wakeupEn		 = DISABLE;/*唤醒功能,仅从机时有效.*/
	//i2cConfig.slaveConfig.rxOFInterruptEn	= DISABLE;/*接收缓存溢出中断.*/
	//i2cConfig.slaveConfig.txUFInterruptEn	= DISABLE;/*发送缓存溢出中断.*/
	
	
	I2C_Init(I2C0, &i2cConfig);
}


/*
uint8_t cps135b_readbyte(uint8_t addr)
{
	uint8_t data;
	
	I2C_MasterTransmitPoll(I2C0, CPS135B_ADDR, &addr, 1, DISABLE);//发送读取地址
	I2C_MasterReceivePoll(I2C0, CPS135B_ADDR, &data, 1);//读取数据
	
	return data;
}

void cps135b_writebyte(uint8_t addr, uint8_t data)
{
	uint8_t buffer[2];
	buffer[0] = addr;
	buffer[1] = data;
	
	I2C_MasterTransmitPoll(I2C0, CPS135B_ADDR, buffer, 2, ENABLE);//发送读取地址
}



void cps135b_mr()
{
	uint8_t buffer[2];
	buffer[0] = 0x30;
	buffer[1] = 0x0A;
	
	I2C_MasterTransmitPoll(I2C0, CPS135B_ADDR, buffer, 2, ENABLE);//发送读取地址
}

uint8_t cps135b_gd(float* pressure, float* temperature)
{
	uint32_t status = I2C_HW_STATUS_ERROR_NULL;
	uint32_t  tmp = 0;
	uint8_t reg_addr = 0x06;
	uint8_t data[5];
	
	status |= I2C_MasterTransmitPoll(I2C0, CPS135B_ADDR, &reg_addr, 1, DISABLE);//发送读取地址
	status |= I2C_MasterReceivePoll(I2C0, CPS135B_ADDR, data, 5);//读取数据
	
	if(I2C_HW_STATUS_ERROR_NULL == status){
	
		tmp = (uint32_t)data[0]<<16;
		tmp += (uint32_t)data[1]<<8;
		tmp += data[2];
		
		*pressure = (1.0*tmp)/256;

		tmp = 0;
		tmp += (uint32_t)data[3]<<8;
		tmp += data[4];
		
		
		if(data[3] <= 128){
			*temperature = 1.0*tmp/256;
		}else{
			*temperature = 1.0*(tmp-65535)/256;
		}
		
		
		return 0;
		
	}else{
		return 1;
	}
	
	
}

*/




void PressureSensor_Init(void)
{
	I2C0_ParaInit();
	iic_error_count = 0;
	cps_pressure = 0;
	cps_temperature = 0;
	
}

uint8_t PressureSensor_MR(void)
{
	
	uint8_t buffer[2];
	buffer[0] = 0x30;
	buffer[1] = 0x0A;
	
	//反复几次出现问题，直接返回异常
	if(iic_exception2 > 3){
		return 1;
	}
	
	ret_status = I2C_HW_STATUS_ERROR_NULL;
	ret_status = I2C_MasterTransmitPoll(I2C0, CPS135B_ADDR, buffer, 2, ENABLE);//发送读取地址
	
	if(I2C_HW_STATUS_ERROR_NULL == ret_status){
		return 0;
	}else{
		return 1;
	}
	
}

uint8_t PressureSensor_Read(void)
{
	uint32_t  tmp = 0;
	uint8_t reg_addr = 0x06;
	uint8_t data[5];
	
	if(iic_exception2 > 3){
		//反复几次出现问题，直接返回异常
		return 1;
	}
	
	ret_status = I2C_HW_STATUS_ERROR_NULL;
	ret_status |= I2C_MasterTransmitPoll(I2C0, CPS135B_ADDR, &reg_addr, 1, DISABLE);//发送读取地址
	ret_status |= I2C_MasterReceivePoll(I2C0, CPS135B_ADDR, data, 5);//读取数据
	
	if(I2C_HW_STATUS_ERROR_NULL == ret_status){
	
		tmp = (uint32_t)data[0]<<16;
		tmp += (uint32_t)data[1]<<8;
		tmp += data[2];
		
		cps_pressure = (1.0*tmp)/256/1000;  //kPa 

		tmp = 0;
		tmp += (uint32_t)data[3]<<8;
		tmp += data[4];
		
		
		if(data[3] <= 128){
			cps_temperature = 1.0*tmp/256;
		}else{
			cps_temperature = 1.0*(tmp-65535)/256;
		}
		
		iic_error_count = 0;
		iic_exception =0;
		
	}else{
		
		iic_error_count++;
	}
	
	if(iic_error_count >= 3){
		iic_exception =1;
		
		PressureSensor_DeInit();
		PressureSensor_Init();
		
		iic_exception2++;
		
	}
	
	return iic_exception;
	
}



uint8_t PressureSensor_Getvalue(float* pressure)
{
	uint32_t status = I2C_HW_STATUS_ERROR_NULL;
	uint32_t  tmp = 0;
	uint8_t reg_addr = 0x06;
	uint8_t data[3];
	
	status |= I2C_MasterTransmitPoll(I2C0, CPS135B_ADDR, &reg_addr, 1, DISABLE);//发送读取地址
	status |= I2C_MasterReceivePoll(I2C0, CPS135B_ADDR, data, 3);//读取数据
	
	if(I2C_HW_STATUS_ERROR_NULL == status){
	
		tmp = (uint32_t)data[0]<<16;
		tmp += (uint32_t)data[1]<<8;
		tmp += data[2];
		
		*pressure = (1.0*tmp)/256;

		return 0;
		
	}else{
		return 1;
	}
	
}

uint8_t PressureSensor_Getvalue2(float* pressure, float* temperature)
{
	*pressure = cps_pressure;
	*temperature = cps_temperature;
	
	return iic_exception;

}

uint8_t PressureSensor_Print(void)
{
	float pressure = 0.0; 
	float temperature = 0.0;
	
	//PressureSensor_Getvalue(&pressure);
	PressureSensor_Getvalue2(&pressure, &temperature);
	
	printf("PressureSenso： pressure:%f  temperature:%f \r\n", pressure, temperature);
	
	
}


void PressureSensor_DeInit(void)
{

	I2C_DeInit(I2C0);
}

void PressureSensor_Release(void)
{

	I2C_DeInit(I2C0);
}