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/*
*********************************************************************************************************
*                                              rx32h6xx
*                                           Library Function
*
*                                   Copyright 2024, RX Tech, Corp.
*                                        All Rights Reserved
*
*
* Project      : rx32h6xx
* File         : main.c
* By           : RX_SD_Team
* Version      : V1.0.0
* Description  : Only rx32h6xx
*********************************************************************************************************
*/
#include "main.h"

/*
*********************************************************************************************************
*                                           Global macro/Structure
*********************************************************************************************************
*/

/*
*********************************************************************************************************
*                                             Global variable
*********************************************************************************************************
*/

/*
*********************************************************************************************************
*                                           Global Function declaration
*********************************************************************************************************
*/

void Delay_us( uint32_t us )
{
  uint32_t Fsys;
	Fsys=RCC_Get_SystemClock()/1000000;
	//maximum:199728us 
	if( us*Fsys > SysTick_LOAD_RELOAD_Msk ) return;
	SysTick->CTRL = 0;      //Disable SysTick
	SysTick->LOAD = Fsys*us;//Set count number:72*us, 72 means 1us when SystemCoreClock is 72MHz
	SysTick->VAL  = 0;      //Clear current count number and count flag
	SysTick->CTRL = 5;      //Enable SysTick and Select SystemCoreClock as SysTick clock source
	while((SysTick->CTRL&0x10000)==0);//Wait for count flag set
	SysTick->CTRL = 0;      //Disable SysTick
}

void Delay_ms( uint32_t ms )
{
	uint32_t i;
	for(i=ms;i>0;i--)
	{
		Delay_us(1000);
	}
}


void SystemClock_Config(void)
{
	// set flash lantency
	FLASH_Set_Latency(FLASH_Latency_2);
	
  RCC_Enable_HSI();
  while(RCC_Get_HSIRDY() != 1)
  {
  }
  RCC_Set_PLLMUL(RCC_CFGR_PLLMUL_19x);
  RCC_Enable_PLL();
  while(RCC_Get_PLLRDY() != 1)
  {
  }
  RCC_Set_AHBPrescaler(RCC_CFGR_HPRE_DIV1);
  RCC_Set_APB1Prescaler(RCC_CFGR_PPRE1_DIV2);
  RCC_Set_APB2Prescaler(RCC_CFGR_PPRE2_DIV1);
  RCC_Set_SysClkSource(RCC_CFGR_SW_PLL);
  while(RCC_Get_SysClkSource() != RCC_CFGR_SWS_PLL)
  {
  }
  RCC_Set_ADCClkSource(RCC_CFGR_ADCCLK_SEL_PLL2);
  RCC_Set_ADCPrescaler(RCC_CFGR_ADCPRE_DIV5);
}

void ADC_Init(ADC_TypeDef *ADCx, uint32_t Channel, uint32_t SamplingTime)
{
  __IO uint32_t uhADCxConvertedData;
	RCC_Enable_AHBClock(RCC_AHBENR_ADC1EN);
	
	ADC_Reg_InitTypeDef  ADC_Reg_InitStruct = {0};
	ADC_REG_RankInitTypeDef ADC_REG_RankInitStruct = {0};
	
	ADC_Reg_InitStruct.TriggerSource 							= ADC_CR2_EXTSEL_SWSTART;                       
	ADC_Reg_InitStruct.Continuous 								= ADC_CR2_CONT_SINGLE;                              
	ADC_Reg_InitStruct.ScanMode 									= ADC_CR1_SCAN_DISABLE;                                                                
	ADC_Reg_InitStruct.DataAlignment							= ADC_CR2_ALIGN_RIGHT;
	ADC_Reg_InitStruct.AnalogWatchDog 						= ADC_CR1_AWD_DISABLE;
	ADC_Reg_InitStruct.AWDChannelGroup 						= ADC_AWD_DISABLE;
	ADC_Reg_InitStruct.RegularDiscont							= ADC_CR1_DISCEN_DISABLE;
	ADC_Reg_InitStruct.RegularDiscontNumber				= ADC_CR1_DISCONT_DISABLE;
	ADC_Reg_InitStruct.EOCOption									=	ADC_EOC_OPT_DISABLE;
	ADC_Reg_Init(ADC1,&ADC_Reg_InitStruct);
	
	ADC_REG_RankInitStruct.Length = ADC_SQRL_SCAN_1RANK;
	ADC_REG_RankInitStruct.Rank[0].Channel = Channel;
	ADC_REG_RankInitStruct.Rank[0].SamplingTime = ADC_SAMPLINGTIME_2p5CYCLES;
	ADC_REG_RankInit(ADC1,&ADC_REG_RankInitStruct);
	
  /* Enable ADC */
  ADC_Enable_ADON(ADCx);
	
	Delay_us(200);
	
	/* Run ADC self calibration */
	ADC_Trig_CAL(ADCx);								
	while (ADC_Get_CAL(ADCx) != 0);

	/* Clear flag ADC group regular end of unitary conversion */
	ADC_Clear_SR(ADCx,ADC_SR_EOC);
	
	/* Start ADC group regular conversion */
	ADC_Start_SW(ADCx);

	/*wait flag ADC group regular end of unitary conversion */
	while (ADC_Get_SR(ADCx,ADC_SR_EOC) == 0);
	
	 /* (data scale corresponds to ADC resolution: 16 bits) */
	uhADCxConvertedData =   ADC_Read_DRx(ADCx, ADC_DR1);
	
  /* Disable ADC */
  ADC_Disable_ADON(ADCx);
}

void OPAMP_Initial( OPAMP_TypeDef *OPAMPx )
{
	RCC_Enable_APB2Clock(RCC_APB2ENR_SYSCFGEN); 
	RCC_Enable_AHBClock(RCC_AHBENR_IOPAEN | RCC_AHBENR_IOPBEN | RCC_AHBENR_IOPCEN |RCC_AHBENR_IOPDEN);
	GPIO_InitTypeDef GPIO_InitStruct = {0};

  //GPIO Initial
	/*--------  OPAMP3 PGA mode 3  ----------*/
  //OPAMP3_P1  -->PB0
	//OPAMP3_P2  -->PB3
  //OPAMP3_N1  -->PB2
	//OPAMP3_O   -->PB1
	
	GPIO_InitStruct.Pin  					= GPIO_PIN_0;
  GPIO_InitStruct.Mode 					= GPIO_MODE_ANALOG;
  GPIO_InitStruct.Pull 					= GPIO_PUPDR_Floating;
	GPIO_InitStruct.Alternate			= GPIO_AF0;
	GPIO_InitStruct.Speed					= GPIO_OSPEEDR_Low;	
  GPIO_Init(GPIOB, &GPIO_InitStruct);
	
  GPIO_InitStruct.Pin  					= GPIO_PIN_1;
  GPIO_InitStruct.Mode 					= GPIO_MODE_ANALOG;
  GPIO_InitStruct.Pull 					= GPIO_PUPDR_Floating;
	GPIO_InitStruct.Alternate			= GPIO_AF0;
	GPIO_InitStruct.Speed					= GPIO_OSPEEDR_Low;	
  GPIO_Init(GPIOB, &GPIO_InitStruct);
	
	GPIO_InitStruct.Pin  					= GPIO_PIN_2;
  GPIO_InitStruct.Mode 					= GPIO_MODE_ANALOG;
  GPIO_InitStruct.Pull 					= GPIO_PUPDR_Floating;
	GPIO_InitStruct.Alternate			= GPIO_AF0;
	GPIO_InitStruct.Speed					= GPIO_OSPEEDR_Low;	
  GPIO_Init(GPIOB, &GPIO_InitStruct);
	
	GPIO_InitStruct.Pin  					= GPIO_PIN_3;
  GPIO_InitStruct.Mode 					= GPIO_MODE_ANALOG;
  GPIO_InitStruct.Pull 					= GPIO_PUPDR_Floating;
	GPIO_InitStruct.Alternate			= GPIO_AF0;
	GPIO_InitStruct.Speed					= GPIO_OSPEEDR_Low;	
  GPIO_Init(GPIOB, &GPIO_InitStruct);
	
	//OPA MODE	
	OPAMP_InitTypeDef  OPAMP_InitStruct  = {0};	
	OPAMP_InitStruct.PGAGain								= OPAMP_GAIN_NONE;
	OPAMP_InitStruct.FunctionalMode					= OPAMP_MODE_OPA;
	OPAMP_InitStruct.OPAMP_OUTCONNECT				= OPAMP_VM_NO_CONNECT;
	OPAMP_InitStruct.VPSEL  								= OPAMP_CSR_VPSEL_P2;
	OPAMP_InitStruct.TOEXT									= OPAMP_CSR_TOEXT_ENABLE;
	OPAMP_InitStruct.TOINT									= OPAMP_CSR_TOINT_ENABLE;
	OPAMP_InitStruct.BIASMode								= OPAMP_BIAS_NONE;
	OPAMP_Init(OPAMP3, &OPAMP_InitStruct);
	OPAMP_Enable(OPAMP3);
}


int main(void)
{
	SystemClock_Config();
	OPAMP_Initial(OPAMP3);
	ADC_Init(ADC1,ADC_CHANNEL_OPA3,ADC_SAMPLINGTIME_2p5CYCLES);

  while(1)
  {
		;
  }
}
