#include "spi_dac8562.h"

void delay_us(uint32_t time)
{
	uint32_t i;
	for(i=0;i<time*65;i++)
	{
		continue;
	}
}

void DAC856x_Init(uint8_t DAC_Num)
{
	DAC856x_Write_Data(0x28,0x0001,DAC_Num);
	DAC856x_Write_Data(0x20,0x0003,DAC_Num);
	DAC856x_Write_Data(0x38,0x0001,DAC_Num);
	DAC856x_Write_Data(0x1F,0x1111,DAC_Num);//初始化DAC的代码,在完成HAL的初始化之后调用
}

void DAC856x_SetVoltage(uint8_t DAC_Num,uint8_t Channel,double voltage)
{
	uint16_t vol_reg;
	vol_reg=(uint16_t)((voltage/30.0)*65535);//变压比,需要手动根据输出幅度范围进行修改
	switch (Channel)//对通道的判断,8562拥有两个输出的通道.
	{
	case ChannelA:
		DAC856x_Write_Data(0x19,vol_reg,DAC_Num);
		break;
	case ChannelB:
		DAC856x_Write_Data(0x18,vol_reg,DAC_Num);
		break;
	default:
		break;
	}
}

void DAC856x_Write_Data(uint8_t command,uint16_t data,uint8_t DAC_Num)
{
	int i;
	switch (DAC_Num)//选择DAC通道
	{
	case DAC1:
		DAC8562_SYNC_1(1);
		delay_us(1);
		DAC8562_SYNC_1(0);
		break;
	case DAC2:
		DAC8562_SYNC_2(1);
		delay_us(1);
		DAC8562_SYNC_2(0);
		break;
	case DAC3:
		DAC8562_SYNC_3(1);
		delay_us(1);
		DAC8562_SYNC_3(0);
		break;
	default:
		break;
	}
	for(i=7;i>=0;i--)  //写入指令与地址
	{
		DAC8562_SCLK(1);
		delay_us(10);
		DAC8562_DIN((command>>i)&0x01);
		delay_us(10);
		DAC8562_SCLK(0);
		delay_us(10);
	}
	for(i=15;i>=0;i--) //写入相应的数据
	{
		DAC8562_SCLK(1);
		delay_us(10);
		DAC8562_DIN((data>>i)&0x01);
		delay_us(10);
		DAC8562_SCLK(0);
		delay_us(10);
	}
}