#include "adc.h"
#include "includes.h"
#include "delay.h"

//////////////////////////////////////////////////////////////////////////////////	 
//This program is for educational purposes only, without the author's permission, may not be used for any other purpose
//ALIENTEK STM32F407 Development Board
//ADC driver code	   
//Hot Atomic @ALIENTEK
//Forum: www.openedv.com
//Date created: 2015/9/1
//Version: V1.0
//All rights reserved pirated reserved.
//Copyright(C) Guangzhou wing electronic technology limited company 2014-2024
//All rights reserved									  
////////////////////////////////////////////////////////////////////////////////// 	

#define  ADC1_DR_Address                        ((u32)0x4001204C)
#define  ADC2_DR_Address                        ((u32)0x4001214C)
#define  ADC3_DR_Address                        ((u32)0x4001224C)

// DMA Buffer 
u16 Adc1DmaBuff[ADC1_DMA_BUFFER_MAX][ADC1_CH_MAX];
u16 Adc2DmaBuff[ADC2_DMA_BUFFER_MAX][ADC2_CH_MAX];

// DMA Buff Flag
static u8 DmaBuffFlag = false;

//Temp port Initialize
void Temp_Port_Init(void)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	DMA_InitTypeDef DMA_InitStructure;
	ADC_CommonInitTypeDef ADC_CommonInitStructure;
	ADC_InitTypeDef ADC_InitStructure;

	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2, ENABLE);
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);

	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);

	/* ADC Channel 5, 4, 3, 2, 1, 0 config --------------------------------------------------------*/
	/* Configure 
			 PA.0(ADC Channel 0) 
			 PA.1(ADC Channel 1) 
			 PA.2(ADC Channel 2) 
			 PA.3(ADC Channel 3) 
			 PA.4(ADC Channel 4) 
			 PA.5(ADC Channel 5) 
	 as analog input 
	-------------------------*/
	GPIO_InitStructure.GPIO_Pin     = TEMP1_PIN 
																	| TEMP2_PIN
																	| TEMP3_PIN
																	| TEMP4_PIN
																	| TEMP5_PIN
																	| TEMP6_PIN
																	| TEMP7_PIN
																	| TEMP8_PIN
																	;
	GPIO_InitStructure.GPIO_Mode    = GPIO_Mode_AN;
	GPIO_InitStructure.GPIO_PuPd    = GPIO_PuPd_NOPULL;
	GPIO_InitStructure.GPIO_Speed   = GPIO_Speed_100MHz;
	GPIO_Init(TEMP_PORT, &GPIO_InitStructure);

	/* DMA2 Stream0 channel0 configuration */
	DMA_DeInit(DMA2_Stream0);

	DMA_InitStructure.DMA_Channel 						= DMA_Channel_0;  
	DMA_InitStructure.DMA_PeripheralBaseAddr 	= (u32)ADC1_DR_Address;
	DMA_InitStructure.DMA_Memory0BaseAddr 		= (u32)Adc1DmaBuff;
	DMA_InitStructure.DMA_DIR 								= DMA_DIR_PeripheralToMemory;
	DMA_InitStructure.DMA_BufferSize 					= (ADC1_CH_MAX * ADC1_DMA_BUFFER_MAX);
	DMA_InitStructure.DMA_PeripheralInc 			= DMA_PeripheralInc_Disable;
	DMA_InitStructure.DMA_MemoryInc 					= DMA_MemoryInc_Enable;
	DMA_InitStructure.DMA_PeripheralDataSize 	= DMA_PeripheralDataSize_HalfWord;
	DMA_InitStructure.DMA_MemoryDataSize 			= DMA_MemoryDataSize_HalfWord;
	DMA_InitStructure.DMA_Mode 								= DMA_Mode_Circular;
	DMA_InitStructure.DMA_Priority 						= DMA_Priority_Medium;
	DMA_InitStructure.DMA_FIFOMode 						= DMA_FIFOMode_Disable;
	DMA_InitStructure.DMA_FIFOThreshold 			= DMA_FIFOThreshold_HalfFull;
	DMA_InitStructure.DMA_MemoryBurst 				= DMA_MemoryBurst_Single;
	DMA_InitStructure.DMA_PeripheralBurst 		= DMA_PeripheralBurst_Single;
	DMA_Init(DMA2_Stream0, &DMA_InitStructure);
    
	/* dma2 int */		// TC: Transfer complete, HT : Harf transfer
//    DMA_ITConfig(DMA2_Stream0, DMA_IT_TC, ENABLE);
    
	/* Enable DMA2 Stream0 */
	DMA_Cmd(DMA2_Stream0, ENABLE);

	/* ADC Common Init **********************************************************/
	ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
	ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div2;
	ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
	ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;
	ADC_CommonInit(&ADC_CommonInitStructure);

	/* ADC1 configuration ------------------------------------------------------*/
	ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
	ADC_InitStructure.ADC_ScanConvMode = ENABLE;
	ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
	ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
	ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1;
	ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
	ADC_InitStructure.ADC_NbrOfConversion = ADC1_CH_MAX;
	ADC_Init(ADC1, &ADC_InitStructure);

	/* Enable ADC1 DMA */
	ADC_DMACmd(ADC1, ENABLE);

	/* ADC1 regular channel configuration */ 
	ADC_RegularChannelConfig(ADC1, ADC_Channel_5,           1, ADC_SampleTime_144Cycles);
	ADC_RegularChannelConfig(ADC1, ADC_Channel_4,           2, ADC_SampleTime_144Cycles);
	ADC_RegularChannelConfig(ADC1, ADC_Channel_3,           3, ADC_SampleTime_144Cycles);
	ADC_RegularChannelConfig(ADC1, ADC_Channel_2,           4, ADC_SampleTime_144Cycles);
	ADC_RegularChannelConfig(ADC1, ADC_Channel_1,           5, ADC_SampleTime_144Cycles);
	ADC_RegularChannelConfig(ADC1, ADC_Channel_0,           6, ADC_SampleTime_144Cycles);
	ADC_RegularChannelConfig(ADC1, ADC_Channel_7,           7, ADC_SampleTime_144Cycles);
	ADC_RegularChannelConfig(ADC1, ADC_Channel_6,           8, ADC_SampleTime_144Cycles);
	ADC_RegularChannelConfig(ADC1, ADC_Channel_TempSensor,  9, ADC_SampleTime_480Cycles);
	ADC_RegularChannelConfig(ADC1, ADC_Channel_Vrefint   , 10, ADC_SampleTime_480Cycles);
	ADC_RegularChannelConfig(ADC1, ADC_Channel_Vbat      , 11, ADC_SampleTime_480Cycles);

	/* Enable TempSensor and Vrefint channels : channel16 and channel17 */ 
	ADC_TempSensorVrefintCmd(ENABLE);
	ADC_VBATCmd(ENABLE);

	/* Enable DMA request after last transfer (Single-ADC mode) */
	ADC_DMARequestAfterLastTransferCmd(ADC1, ENABLE);
    
	/* Enable ADC1 */
	ADC_Cmd(ADC1, ENABLE);
    
	/* Start ADC1 Software Conversion */
	ADC_SoftwareStartConv(ADC1);
}

void DMA2_Stream0_IRQHandler(void)
{
	OSIntEnter();    
	/* Test on DMA Stream Transfer Complete interrupt */
	if(DMA_GetITStatus(DMA2_Stream0, DMA_IT_TCIF0))
	{
		/* Clear DMA Stream Transfer Complete interrupt pending bit */
		DMA_ClearITPendingBit(DMA2_Stream0, DMA_IT_TCIF0);  
	}
	OSIntExit();    	//Exit interrupt
}

u16 AvgAdc1DmaValue(u16 ch)
{
	u32 sum = 0;
    
	for (int i = 0; i < ADC1_DMA_BUFFER_MAX; i++) 
		sum += Adc1DmaBuff[i][ch];
    
	return (u16)(sum / ADC1_DMA_BUFFER_MAX);
}

//VI(Voltage and Current) port Initialize
void VI_Port_Init(void)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	DMA_InitTypeDef DMA_InitStructure;
	ADC_CommonInitTypeDef ADC_CommonInitStructure;
	ADC_InitTypeDef ADC_InitStructure;

	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2, ENABLE);
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC2, ENABLE);
	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE);

	/* ADC Channel 14, 15 config --------------------------------------------------------*/
	/* Configure PC.4(ADC Channel 14) PC.5(ADC Channel 15) as analog input --------------*/
	GPIO_InitStructure.GPIO_Pin     = DSG_CURR_PIN | CHG_CURR_PIN;
	GPIO_InitStructure.GPIO_Mode    = GPIO_Mode_AN;
	GPIO_InitStructure.GPIO_PuPd    = GPIO_PuPd_NOPULL;
	GPIO_InitStructure.GPIO_Speed   = GPIO_Speed_100MHz;
	GPIO_Init(CURRENT_PORT, &GPIO_InitStructure);

	/* DMA2 Stream2 channel2 configuration */
	DMA_DeInit(DMA2_Stream2);

	DMA_InitStructure.DMA_Channel 						= DMA_Channel_1;  
	DMA_InitStructure.DMA_PeripheralBaseAddr 	= (u32)ADC2_DR_Address;
	DMA_InitStructure.DMA_Memory0BaseAddr 		= (u32)Adc2DmaBuff;
	DMA_InitStructure.DMA_DIR 								= DMA_DIR_PeripheralToMemory;
	DMA_InitStructure.DMA_BufferSize 					= (ADC2_CH_MAX * ADC2_DMA_BUFFER_MAX);
	DMA_InitStructure.DMA_PeripheralInc 			= DMA_PeripheralInc_Disable;
	DMA_InitStructure.DMA_MemoryInc 					= DMA_MemoryInc_Enable;
	DMA_InitStructure.DMA_PeripheralDataSize 	= DMA_PeripheralDataSize_HalfWord;
	DMA_InitStructure.DMA_MemoryDataSize 			= DMA_MemoryDataSize_HalfWord;
	DMA_InitStructure.DMA_Mode 								= DMA_Mode_Circular;
	DMA_InitStructure.DMA_Priority 						= DMA_Priority_High;
	DMA_InitStructure.DMA_FIFOMode 						= DMA_FIFOMode_Disable;
	DMA_InitStructure.DMA_FIFOThreshold 			= DMA_FIFOThreshold_HalfFull;
	DMA_InitStructure.DMA_MemoryBurst 				= DMA_MemoryBurst_Single;
	DMA_InitStructure.DMA_PeripheralBurst 		= DMA_PeripheralBurst_Single;
	DMA_Init(DMA2_Stream2, &DMA_InitStructure);
    
	/* dma2 int */		// TC: Transfer complete, HT : Harf transfer
	DMA_ITConfig(DMA2_Stream2, DMA_IT_TC, ENABLE);
    
	/* Enable DMA2 Stream1 */
	DMA_Cmd(DMA2_Stream2, ENABLE);

	/* ADC Common Init ---------------------------------------------------------*/
	ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
	ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div2;
	ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
	ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;
	ADC_CommonInit(&ADC_CommonInitStructure);

	/* ADC3 configuration ------------------------------------------------------*/
	ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
	ADC_InitStructure.ADC_ScanConvMode = ENABLE;
	ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
	ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
	ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1;
	ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
	ADC_InitStructure.ADC_NbrOfConversion = ADC2_CH_MAX;
	ADC_Init(ADC2, &ADC_InitStructure);

	/* Enable ADC2 DMA */
	ADC_DMACmd(ADC2, ENABLE);

	/* ADC3 regular channel configuration */ 
	ADC_RegularChannelConfig(ADC2, ADC_Channel_15,           1, ADC_SampleTime_3Cycles);
	ADC_RegularChannelConfig(ADC2, ADC_Channel_14,           2, ADC_SampleTime_3Cycles);

	/* Enable DMA request after last transfer (Single-ADC mode) */
	ADC_DMARequestAfterLastTransferCmd(ADC2, ENABLE);
	
	/* Enable ADC1 */
	ADC_Cmd(ADC2, ENABLE);
	
	/* Start ADC1 Software Conversion */
	ADC_SoftwareStartConv(ADC2);
}

void DMA2_Stream2_IRQHandler(void)
{
	OSIntEnter();    	// Enter interrupt
	/* Test on DMA Stream Transfer Complete interrupt */
	if (DMA_GetITStatus(DMA2_Stream2, DMA_IT_TCIF2))
	{
		DmaBuffFlag = true;
		/* Clear DMA Stream Transfer Complete interrupt pending bit */
		DMA_ClearITPendingBit(DMA2_Stream2, DMA_IT_TCIF2);  
	}
	OSIntExit();    	// Exit interrupt
}

u16 GetDmaBufferFlag(void)
{
	return DmaBuffFlag;
}

void ResetDmaBufferFlag(void)
{
	DmaBuffFlag = false;
}

u16 AvgAdc2DmaValue(u16 ch)
{
	__IO u32 sum = 0;
    
	for (int i = 0; i < ADC2_DMA_BUFFER_MAX; i++) 
		sum += Adc2DmaBuff[i][ch] * 10;
    
	return (u16)(sum / ADC2_DMA_BUFFER_MAX);
}

#ifdef CONSOLE_DEBUG
void DisplayAdc2DmaBufferValue(u8 ch)
{
	for (int i = 0; i < ADC2_DMA_BUFFER_MAX; i++) 
	{
		printf("%d\r\n", Adc2DmaBuff[i][ch]);
        
		delay_os_ms(1);
	}
}
#endif