main.c

STR71x firmware library

/******************** (C) COPYRIGHT 2007 STMicroelectronics ********************
* File Name          : main.c
* Author             : MCD Application Team
* Version            : V4.0
* Date               : 10/09/2007
* Description        : Main program body
********************************************************************************
 THE PRESENT SOFTWARE 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 SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION
 CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*******************************************************************************/

/* Includes ------------------------------------------------------------------*/
#include "71x_lib.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define T1_OCMP_A 1 << 7

#define _SI0                 0x1F10
#define _DO                  0x1DD1
#define _RE                  0x1A9E
#define _MI                  0x179A
#define _FA                  0x164A
#define _SOL                 0x13DA
#define _LA                  0x11CB
#define _SI                  0x0F90
#define _DO2                 0x0EE8
#define _M                   0x0088

#define min                  0x001
#define sq                   0x010
#define q                    0x020
#define qp                   0x040
#define c                    0x080
#define cp                   0x100
#define m                    0x200

/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/

u32 Tab1[30] = 
{ 
_M , m , _DO, cp, _M , min, _DO, cp , _M , min,
_DO, cp, _RE, cp, _MI,  m , _RE,  m , _DO,  cp,
_MI, cp, _RE, cp,_M ,  min, _RE, cp , _DO, m
};


/* u32 Tab1[56] = 
{
_M , m,_DO, c ,_RE, c,_MI, c,_DO, c,
_RE, m,_M , sq,_RE, c,_MI, c,_FA, c,
_M ,sq,_FA, cp,_MI, c,_M ,sq,_MI,cp,
_M , c,_DO, c ,_RE, c,_MI, c,_DO, c,
_RE, m,_M , sq,_RE, c,_MI, c,_FA, m,
_SOL,m,_DO, m ,_DO, m };*/

u32  NoteIndex = 0x00;
u32  Note, Volume, Period;

/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/

/*******************************************************************************
* Function Name  : main
* Description    : Main program
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
int main(void)
{
  #ifdef DEBUG
  debug();
  #endif

  /* System clocks configuration ---------------------------------------------*/
  /* MCLK = PCLK1 = PCLK2 = 8MHz*/ 
  /* Enable TIM1, GPIO0 and GPIO1 clocks on APB2 */
  APB_ClockConfig (APB2, ENABLE, TIM1_Periph | GPIO0_Periph | GPIO1_Periph);
  
  /* GPIO configuration ------------------------------------------------------*/
  
  /* configure pin wakeup button as input TTL */
  GPIO_Config(GPIO0, 0x8000, GPIO_IN_TRI_TTL);

  /* configure P0.0 as output push-pull for LED */
  GPIO_Config(GPIO0, 0x0001, GPIO_OUT_PP);
  GPIO0->PD = 0;
  
  /* Timer 1 Output Compare function pin (P1.7) configured as Alternate 
     function pushpull */
  GPIO_Config (GPIO1, T1_OCMP_A, GPIO_AF_PP);

  /* XTI configuration -------------------------------------------------------*/
  
  /* Initialize the XTI*/
  XTI_Init();

  /* Configure the Line 2 and select Falling edge*/
  XTI_LineModeConfig(XTI_Line15, XTI_FallingEdge);

  /* Enable the External interrupts on line 15 */
  XTI_LineConfig(XTI_Line15, ENABLE);
   
  /* Enable Wake-Up mode in the XTI */
  XTI_ModeConfig(XTI_WakeUpInterrupt, ENABLE);

  /*  Variable Initialization */
  Note = 0;
  Period = 0;
  Volume = 0;
  if (Note == 0xFFFB)
  {
    Volume = 3;
  }

  /* EIC configuration -------------------------------------------------------*/

  /*  Enable the IRQ0 for timer 1 */
  EIC_IRQChannelConfig(T1TIMI_IRQChannel, ENABLE);
  EIC_IRQChannelPriorityConfig(T1TIMI_IRQChannel, 1);
  EIC_IRQConfig(ENABLE);

  /*  Enable the IRQ for the XTI */
  EIC_IRQChannelConfig(XTI_IRQChannel, ENABLE);
  EIC_IRQChannelPriorityConfig(XTI_IRQChannel, 2);
  EIC_IRQConfig(ENABLE);

  /* TIMconfiguration --------------------------------------------------------*/
 
  /*  Initialize the Timer */
  TIM_Init (TIM1);

  /*  Configure the TIM Prescaler */
  TIM_PrescalerConfig (TIM1, 0x01);

  /*  Enable the OverFlow Interrupt */
  TIM_ITConfig (TIM1, TIM_TO_IT, ENABLE);
  /*  Start Timer1 */
  TIM_CounterConfig (TIM1, TIM_START);

  while (1)
  {
  }
}

/*******************************************************************************
* Function Name  : PlayNextTone
* Description    : Update the full period and the DutyCycle of the timer with
*                  the Volume and the next note to play   
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void PlayNextTone(void)
{
  if (Period > 0)
  {
    Period --;
  }
  else
  {
    if (NoteIndex < sizeof(Tab1) / sizeof(Tab1[0]))
    {
      Note = Tab1[NoteIndex];
      Period = Tab1[NoteIndex+1];
      Volume = Note * 0.5;
      if (Note == 0x88)
      { 
        Volume = 0x89; 
      }
      TIM_PWMOModeConfig (TIM1, Volume, TIM_HIGH, Note, TIM_LOW);
      NoteIndex += 2;
    }
    else
    {
      NoteIndex = 0x0;
      Period = 0x0;
    }
  }
}

/******************* (C) COPYRIGHT 2007 STMicroelectronics *****END OF FILE****/