/**
  ******************************************************************************
  * @file    Audio_playback_and_record/src/main.c 
  * @author  MCD Application Team
  * @version V1.0.0
  * @date    28-October-2011
  * @brief   Main program body
  ******************************************************************************
  * @attention
  *
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  *
  * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
  */ 

/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "spi_3201.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "stm32f4xx_rtc.h"

 
/* Exported macro ------------------------------------------------------------*/
/* Select 3201: Chip Select pin low */
//#define 3201_CS_LOW()       GPIO_ResetBits(GPIOB, GPIO_Pin_12)
/* Deselect 3201: Chip Select pin high */
//#define 3201_CS_HIGH()      GPIO_SetBits(GPIOB, GPIO_Pin_12) 


/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define ADC3_DR_ADDRESS     ((uint32_t)0x4001224C)

#define RTC_CLOCK_SOURCE_LSE   /* LSE used as RTC source clock */
/* #define RTC_CLOCK_SOURCE_LSI */ /* LSI used as RTC source clock. The RTC Clock
                                      may varies due to LSI frequency dispersion. */ 

/* Private variables ---------------------------------------------------------*/
 static __IO uint32_t TimingDelay;
 extern uint8_t NbrOfDataToTransfer;
 extern uint8_t NbrOfDataToRead;
 extern __IO uint8_t TxCounter; 
 extern __IO uint16_t RxCounter;
 extern uint8_t RxBuffer[];
 char *command;
 char *command_AT1 = "AT+CGATT?\r\n";
 //char *command_AT2 = "AT+UPSD=0,1,"AIRTELGPRS.COM"\r\n";
 //char command[]="vv, "as" ";
 unsigned char *Buffer;
 char bufnew [33];
 char bufnew1 [33];
 char bufnew2 [33];
 char s[] = "fff";
 unsigned char ab[64];
 unsigned char bc[64];
 unsigned char cd[64];
 unsigned char de[64];
 unsigned char ef[64];
 unsigned char gh[64];
 unsigned char hi[64];
 unsigned char ij[64];
 unsigned char jk[64];
 unsigned int i;
	unsigned char d;
	unsigned char he;
	unsigned char value1;
	unsigned char value2h;
	unsigned char value3l;
	unsigned int value;
	unsigned int valuefin;
	int test;
	int test1;
	
__IO uint16_t ADC3ConvertedValue = 0;
__IO uint32_t ADC3ConvertedVoltage = 0;

	
RCC_ClocksTypeDef RCC_Clocks;

RTC_InitTypeDef RTC_InitStructure;
RTC_TimeTypeDef RTC_TimeStructure;
RTC_DateTypeDef RTC_DateStructure;
RTC_TimeTypeDef  RTC_TimeStampStructure;
RTC_DateTypeDef  RTC_TimeStampDateStructure;
__IO uint32_t AsynchPrediv = 0, SynchPrediv = 0;

RTC_InitTypeDef RTC_InitStructure;
RTC_TimeTypeDef  RTC_TimeStruct;
RTC_TimeTypeDef RTC_TimeStructure;

__IO uint8_t RepeatState = 0;
__IO uint8_t RepeatState1 = 0;
__IO uint8_t RepeatState2 = 0;
__IO uint8_t RepeatState3 = 0;
__IO uint8_t RepeatState4 = 0;
__IO uint8_t RepeatState5 = 0;
__IO uint8_t RepeatState6 = 0;
__IO uint8_t RepeatState7 = 0;
__IO uint8_t RepeatState8 = 0;
__IO uint8_t RepeatState9 = 0;
__IO uint8_t RepeatState10 = 0;
__IO uint16_t CCR_Val = 16826;
extern __IO uint8_t LED_Toggle;

/* Private function prototypes -----------------------------------------------*/
static void TIM_LED_Config(void);
void RTC_Config(void);
void RTC_TimeRegulate(void);
void RTC_TimeShow(void);
void RCC_Configuration(void);
void NVIC_Config(void);
void GPIO_Configuration(void);
void ADC3_CH12_DMA_Config(void);
//void itoa(int,char *,int);
char *strrev(char *string);
int hexval(char );
char *  itoa ( int value, char * str, int base );

int string_length(char*);
void reverse(char*);

/* Private functions ---------------------------------------------------------*/

void RCC_Configuration(void)
{
  /* --------------------------- System Clocks Configuration -----------------*/
	
	/* GPIOC clock enable */
	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE);
  /* USART4 clock enable */
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART4, ENABLE);

  
	/* GPIOC clock enable */
	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE);
	
	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);
	
	/* USART5 clock enable */
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART5, ENABLE);

  
	
}

void NVIC_Config(void)
{
  NVIC_InitTypeDef NVIC_InitStructure;

  /* Enable the USARTx Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = UART4_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
}

void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
	
	GPIO_PinAFConfig(GPIOC, GPIO_PinSource10, GPIO_AF_UART4);/* UART4_TX */
  GPIO_PinAFConfig(GPIOC, GPIO_PinSource11, GPIO_AF_UART4);/* UART4_RX */
	GPIO_PinAFConfig(GPIOC, GPIO_PinSource12, GPIO_AF_UART5);/* UART4_TX */
  GPIO_PinAFConfig(GPIOD, GPIO_PinSource2, GPIO_AF_UART5);/* UART4_RX */

  /*-------------------------- GPIO Configuration ----------------------------*/
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_11;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOC, &GPIO_InitStructure);

		
	/*-------------------------- GPIO Configuration ----------------------------*/
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12 ;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOC, &GPIO_InitStructure);
	
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 ;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOD, &GPIO_InitStructure);

	}



void USART4_Configuration(void)
{
    USART_InitTypeDef USART_InitStructure;
//	USART_ClockInitTypeDef USART_ClockInitStruct;
  /* USARTx configuration ------------------------------------------------------*/
  /* USARTx configured as follow:
        - BaudRate = 9600 baud
        - Word Length = 8 Bits
        - Two Stop Bit
        - Odd parity
        - Hardware flow control disabled (RTS and CTS signals)
        - Receive and transmit enabled
  */
	USART_InitStructure.USART_BaudRate = 9600;  //115200;
  USART_InitStructure.USART_WordLength = USART_WordLength_8b;
  USART_InitStructure.USART_StopBits = USART_StopBits_1;
  USART_InitStructure.USART_Parity = USART_Parity_No;
  USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
  USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;

	USART_Init(UART4,&USART_InitStructure);  //uart

	USART_Cmd(UART4, ENABLE);
}







void SendChar(char ch)
{
	 /* Wait till holding buffer empty */
	while(USART_GetFlagStatus(UART4, USART_FLAG_TXE) == RESET);
	USART_SendData(UART4, (unsigned int) ch);
}

void SendString(char *s)
{
	while(*s)
	{
		while(USART_GetFlagStatus(UART4, USART_FLAG_TXE) == RESET);
		USART_SendData(UART4, (unsigned int) *s++);
	}
}





unsigned int RecvChar(void)
{
	unsigned int aa;
	 /* Wait till holding buffer empty */
	while(USART_GetFlagStatus(UART4, USART_FLAG_RXNE) == RESET);
	aa = (unsigned int) (USART_ReceiveData(UART4) & 0x7F);
	return aa;
}
void RecvString(unsigned char *buffer)
{
  unsigned char data;
 do
  {
		while(USART_GetFlagStatus(UART4, USART_FLAG_RXNE) == RESET);    // Wait for data to be received
    data = (unsigned char) (USART_ReceiveData(UART4) & 0x7F);                         
    *buffer = data;
    buffer++;              // Increment the string pointer
  }
while(data!='K');
*buffer='\0';
}




/**
  * @brief  Delay Function.
  * @param  nCount:specifies the Delay time length.
  * @retval None
  */
void Delay(__IO uint32_t nCount)
{
  while(nCount--)
  {
  }
}







/**
  * @brief  Configures the RTC peripheral and select the clock source.
  * @param  None
  * @retval None
  */
void RTC_Config(void)
{
	 
  /* Enable the PWR clock */
	
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
  
  /* Allow access to RTC */
   PWR_BackupAccessCmd(ENABLE);

	
	
  /* Reset RTC Domain */
   RCC_BackupResetCmd(ENABLE);
	 RCC_BackupResetCmd(DISABLE);
	
	 /* Allow access to RTC */
 // PWR_RTCAccessCmd(ENABLE);
	 /* Reset RTC Domain */
 // RCC_RTCResetCmd(ENABLE);
  //RCC_RTCResetCmd(DISABLE);
	
  /* Enable the LSE OSC */
  RCC_LSEConfig(RCC_LSE_ON);
SendString("b7");
   //Wait till LSE is ready 
  while(RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET)
  {
  }
SendString("b8");
  /* Select the RTC Clock Source */
  RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);

  /* Configure the RTC data register and RTC prescaler */
  RTC_InitStructure.RTC_AsynchPrediv = 0x7F;
  RTC_InitStructure.RTC_SynchPrediv  = 0xFF;
  RTC_InitStructure.RTC_HourFormat   = RTC_HourFormat_24;
  RTC_Init(&RTC_InitStructure);
  
  /* Set the time to 00h 00mn 00s AM */
  RTC_TimeStruct.RTC_H12     = RTC_H12_AM;
  RTC_TimeStruct.RTC_Hours   = 0x00;
  RTC_TimeStruct.RTC_Minutes = 0x00;
  RTC_TimeStruct.RTC_Seconds = 0x00;  
  RTC_SetTime(RTC_Format_BCD, &RTC_TimeStruct);
  
	/* Enable the RTC Clock */
  RCC_RTCCLKCmd(ENABLE);
  
  /* Wait for RTC APB registers synchronisation */
  RTC_WaitForSynchro();
}

/**
  * @brief  Display the current time on the Hyperterminal.
  * @param  None
  * @retval None
  */
void RTC_TimeShow(void)
{
  /* Get the current Time and Date */
	SendString("aaa");
  RTC_GetTime(RTC_Format_BIN, &RTC_TimeStructure);
 // printf("\n\r============== Current Time Display ============================\n\r");
  //printf("\n\r  The current time (Hour-Minute-Second) is :  %0.2d:%0.2d:%0.2d \n\r", RTC_TimeStructure.RTC_Hours, RTC_TimeStructure.RTC_Minutes, RTC_TimeStructure.RTC_Seconds);
  SendString("bbb");
	SendChar(RTC_TimeStructure.RTC_Hours);
	SendString(":");
	SendChar(RTC_TimeStructure.RTC_Minutes);
	SendString(":");
	SendChar(RTC_TimeStructure.RTC_Seconds);
	
	
	
	/* Unfreeze the RTC DR Register */
  (void)RTC->DR;
}


char *itoa(int n, char *s, int b)            //hex,dec,bin to string 
{
	static char digits[] = "0123456789abcdefghijklmnopqrstuvwxyz";
	int i=0, sign;
    
	if ((sign = n) < 0)
		n = -n;
	do {
		s[i++] = digits[n % b];
	} while ((n /= b) > 0);
	if (sign < 0)
		s[i++] = '-';
	s[i] = '\0';
	reverse(s);
	return s;  //strrev(s);
}

void reverse(char *string) 
{
   int length, c;
   char *begin, *end, temp;
 
   length = string_length(string);
 
   begin = string;
   end = string;
 
   for ( c = 0 ; c < ( length - 1 ) ; c++ )
      end++;
 
   for ( c = 0 ; c < length/2 ; c++ ) 
   {        
      temp = *end;
      *end = *begin;
      *begin = temp;
 
      begin++;
      end--;
   }
}
 
int string_length(char *pointer)
{
   int c = 0;
 
   while( *(pointer+c) != '\0' )
      c++;
 
   return c;
}



char * utoa(unsigned int n)    //unsigned int to string
{
  char * res, buf[30]; // long enough for largest number
  unsigned int i, counter = 0;

  if (n == 0)
    buf[counter++] = '0';

  for ( ; n; n /= 10)
    buf[counter++] = "0123456789"[n%10];

  res = malloc(counter);

  for (i = 0; i < counter; ++i)
    res[i] = buf[counter - i - 1];

  return res;
}

/*
char * AscitoHex(char symbols)
{
	//char symbols  = "0123456789abcdef";
    char result;
    unsigned i, lsd, hexNum;
    for (i = 0; i < 256; ++i)
    {
        hexNum = i;
        strcpy (result, "0");
        do
        {
            lsd = hexNum % 16;
            result = symbols;
            hexNum /= 16;
        } while (hexNum);
        result = '\0';
        return strrev (result);
    }
} */

int hexval(char c)   //ASCII representation of a hex value
{    
   int n;
   
   if ((c>='0') && (c<='9'))
      n = c - '0';
   else if ((c>='A') && (c<='F'))
      n = c - 'A' + 10;
   else if ((c>='a') && (c<='f'))
      n = c - 'a' + 10;
   else 
      n = 0;
   return n;
}




int main(void)
{ 
	
	
	
	//int num = 123;
	//char buf[5];
	int k1,k2;
	//SystemCoreClockUpdate();
  /* Initialize LEDS */
	
  STM_EVAL_LEDInit(LED3);
  STM_EVAL_LEDInit(LED4);
  STM_EVAL_LEDInit(LED5);
  STM_EVAL_LEDInit(LED6);
 
  /* Green Led On: start of application */
  STM_EVAL_LEDOn(LED4);
	
       
  /* SysTick end of count event each 10ms */
  RCC_GetClocksFreq(&RCC_Clocks);
  SysTick_Config(RCC_Clocks.HCLK_Frequency / 100);
  
  /* Configure TIM4 Peripheral to manage LEDs lighting */
  //TIM_LED_Config();


	//relay_config();
	NVIC_Config();                                  //***
	RCC_Configuration();                            //***
	GPIO_Configuration();                            //****
	USART4_Configuration();                            //***
	//USART5_Configuration();
  /* Enable the uart receive interrupt: this interrupt is generated when the 
      transmit data register is empty */  
  //USART_ITConfig(UART4, USART_IT_RXNE, ENABLE);            //***
	

	SendString("bbbb");
	RTC_Config();
  SendString("cccc");
  
  while (1)
  {  
					
		STM_EVAL_LEDOn(LED6);
		SendString("start\n\r");
		RTC_TimeShow();
		SendString("\n\rstop\n\r");
		STM_EVAL_LEDOn(LED5);
		for(k1=0;k1<6500;k1++)
		{
			for(k2=0;k2<6500;k2++)
		{
			
		}
		
		//test=	atoi ("234");    ***testing
		//sscanf(s, "%x", &test);      //hex string to decimal integer value
		//itoa(test,bufnew1,10);       ////decimal integer value to decimal string value
		//SendString(bufnew1);
		/*
		SendString("voltage=");
		sscanf(bufnew, "%x", &test1);      //hex string to decimal integer value
		test1=test1 *4450/0xFFF;      //*3300/0xFFF;
		itoa(test1,bufnew2,10);       ////decimal integer value to decimal string value
		SendString(bufnew2);
		SendString("\n\r");
		*/
		
			
		}
						
		}	 		
	}
  
/**
  * @brief  ADC3 channel12 with DMA configuration
  * @param  None
  * @retval None
  */
void ADC3_CH12_DMA_Config(void)
{
  ADC_InitTypeDef       ADC_InitStructure;
  ADC_CommonInitTypeDef ADC_CommonInitStructure;
  DMA_InitTypeDef       DMA_InitStructure;
  GPIO_InitTypeDef      GPIO_InitStructure;

  /* Enable ADC3, DMA2 and GPIO clocks ****************************************/
  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2 | RCC_AHB1Periph_GPIOC, ENABLE);
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC3, ENABLE);

  /* DMA2 Stream0 channel0 configuration **************************************/
  DMA_InitStructure.DMA_Channel = DMA_Channel_2;  
  DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)ADC3_DR_ADDRESS;
  DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)&ADC3ConvertedValue;
  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
  DMA_InitStructure.DMA_BufferSize = 1;
  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
  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_Stream0, &DMA_InitStructure);
  DMA_Cmd(DMA2_Stream0, ENABLE);

  /* Configure ADC3 Channel12 pin as analog input ******************************/
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
  GPIO_Init(GPIOC, &GPIO_InitStructure);

  /* 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 Init ****************************************************************/
  ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
  ADC_InitStructure.ADC_ScanConvMode = DISABLE;
  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
  ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
  ADC_InitStructure.ADC_NbrOfConversion = 1;
  ADC_Init(ADC3, &ADC_InitStructure);

  /* ADC3 regular channel12 configuration *************************************/
  ADC_RegularChannelConfig(ADC3, ADC_Channel_12, 1, ADC_SampleTime_3Cycles);

 /* Enable DMA request after last transfer (Single-ADC mode) */
  ADC_DMARequestAfterLastTransferCmd(ADC3, ENABLE);

  /* Enable ADC3 DMA */
  ADC_DMACmd(ADC3, ENABLE);

  /* Enable ADC3 */
  ADC_Cmd(ADC3, ENABLE);
}



/**
  * @brief  Configures the TIM Peripheral for Led toggling.
  * @param  None
  * @retval None
  */
static void TIM_LED_Config(void)
{
  TIM_OCInitTypeDef  TIM_OCInitStructure;
  TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
  NVIC_InitTypeDef NVIC_InitStructure;
  uint16_t prescalervalue = 0;
  
  /* TIM4 clock enable */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);
  
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
  
  /* Enable the TIM3 gloabal Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = TIM4_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

  /* Initialize Leds mounted on STM324F4-EVAL board */
  STM_EVAL_LEDInit(LED3);
  STM_EVAL_LEDInit(LED4);
  STM_EVAL_LEDInit(LED6);
  
  /* Compute the prescaler value */
  prescalervalue = (uint16_t) ((SystemCoreClock ) / 550000) - 1;
  
  /* Time base configuration */
  TIM_TimeBaseStructure.TIM_Period = 65535;
  TIM_TimeBaseStructure.TIM_Prescaler = prescalervalue;
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);
  
  /* Enable TIM4 Preload register on ARR */
  TIM_ARRPreloadConfig(TIM4, ENABLE);
  
  /* TIM PWM1 Mode configuration: Channel */
  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Timing;
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_Pulse = CCR_Val;
  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
  
  /* Output Compare PWM1 Mode configuration: Channel2 */
  TIM_OC1Init(TIM4, &TIM_OCInitStructure);
  TIM_OC1PreloadConfig(TIM4, TIM_OCPreload_Disable);
    
  /* TIM Interrupts enable */
  TIM_ITConfig(TIM4, TIM_IT_CC1 , ENABLE);
  
  /* TIM4 enable counter */
  TIM_Cmd(TIM4, ENABLE);
}

/**
  * @brief  Retargets the C library printf function to the USART.
  * @param  None
  * @retval None
  */
PUTCHAR_PROTOTYPE
{
  /* Place your implementation of fputc here */
  /* e.g. write a character to the USART */
  USART_SendData(UART4, (uint8_t) ch);

  /* Loop until the end of transmission */
  while (USART_GetFlagStatus(UART4, USART_FLAG_TC) == RESET)
  {}

  return ch;
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *   where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t* file, uint32_t line)
{ 
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

  /* Infinite loop */
  while (1)
  {
  }
}
#endif

  
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/