#include "ads1230.h"
#include "events_init.h"

long ads1230_vol = 0;

void ads1230_gpio_init(void)
{
	GPIO_InitTypeDef GPIO_InitStruct = {0};
	__HAL_RCC_GPIOA_CLK_ENABLE();

	/*
	PA1---ADS1230 SCLK
	PA6---ADS1230 DOUT
	PB8---ADS1230 PDWN
	*/

	GPIO_InitStruct.Pin = GPIO_PIN_1;
	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
	GPIO_InitStruct.Pull = GPIO_NOPULL;
	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
	HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

	GPIO_InitStruct.Pin = GPIO_PIN_6;
	GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
	HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

	HAL_GPIO_WritePin(GPIOA, GPIO_PIN_1, GPIO_PIN_RESET);
}

uint8_t ads1230_init(void)
{
	ads1230_gpio_init();
	
	int i = 0;
	ADS1230_PDWN_HIGH();
	ADS1230_SCLK_LOW();
	
	do{								
		i++;											
		if(i == 60000)
			return 0;	
	}while(ADS1230_READ); 
	
	ADS1230_PDWN_LOW();
	delay_tick(30);
	ADS1230_PDWN_HIGH();
	
	delay_tick(10);
	for(i=0;i<26;i++)
	{			
		ADS1230_SCLK_HIGH();
		ADS1230_SCLK_LOW();
	}	
	return 1;
}

long ads1230_read(void)
{
	long dat=0;
	int i = 0;
	
	do{								
		i++;											
		if(i == 60000)
			return 0;	
	}while(ADS1230_READ);

		
	for(i=0;i<20;i++)
	{
		dat<<=1;
		ADS1230_SCLK_HIGH();
		ADS1230_SCLK_LOW();
		if(ADS1230_READ)
			dat|=0x01;
	}
	for(i=0;i<4;i++)
	{
		ADS1230_SCLK_HIGH();
		ADS1230_SCLK_LOW();
	}				
	if((dat&0x80000) != 0)    //数据为负数
	{ 
		dat -= 0xfffff;
	}					
	return dat;
}

void get_ads1230_vol(void)
{
	ads1230_vol = ads1230_read() * 3300.0 / 524288.0;
	
	//测试过程中确定采样电压的极值和对应位置
	if(test_status == 2)
	{
		if(maxv < ads1230_vol)
		{	
			max_point_cnt = point_data.cnt;		
			maxv = ads1230_vol;
			maxv_loca = ((CaptureNumber - 30000) / 720.0) * 254.0;
			
		}
		if(minv > ads1230_vol)
		{	
			min_point_cnt = point_data.cnt;		
			minv = ads1230_vol;
			minv_loca = ((CaptureNumber - 30000) / 720.0) * 254.0;
			
			
		}
	}
}