[活动专区] 【AT-START-F407测评】+移植俄罗斯方块

void TIM3_Configuration(void)

{

//    TMR3 Channel1 = PA6

//    TMR3 Channel2 = PA7

//    TMR3 Channel3 = PB0

//    TMR3 Channel4 = PB1

    

    TMR_TimerBaseInitType  TMR_TMReBaseStructure;

    TMR_OCInitType  TMR_OCInitStructure;

    

  /* Compute the prescaler value */

  /* TMRe base configuration */

  

  TMR_TimeBaseStructInit(&TMR_TMReBaseStructure);

  TMR_TMReBaseStructure.TMR_Period = 1056 - 1;  //1056 / 40 = 26.4us  //800*600@60Hz, 26.4us

  TMR_TMReBaseStructure.TMR_DIV = (uint16_t) (SystemCoreClock / 40000000) - 1;

  TMR_TMReBaseStructure.TMR_ClockDivision = 0;

  TMR_TMReBaseStructure.TMR_CounterMode = TMR_CounterDIR_Up;



  TMR_TimeBaseInit(TMR3, &TMR_TMReBaseStructure);



  /* PWM1 Mode configuration: Channel1 */

  TMR_OCStructInit(&TMR_OCInitStructure);

  TMR_OCInitStructure.TMR_OCMode = TMR_OCMode_PWM1;

  TMR_OCInitStructure.TMR_OutputState = TMR_OutputState_Enable;

  TMR_OCInitStructure.TMR_Pulse = 128 - 1;

  TMR_OCInitStructure.TMR_OCPolarity = TMR_OCPolarity_Low;

  TMR_OC1Init(TMR3, &TMR_OCInitStructure);

  TMR_OC1PreloadConfig(TMR3, TMR_OCPreload_Enable);



  /* PWM1 Mode configuration: Channel2 */

  TMR_OCInitStructure.TMR_OutputState = TMR_OutputState_Enable;

  TMR_OCInitStructure.TMR_Pulse = 128 - 1 + 88 - 12;    //12是修正值

  TMR_OCInitStructure.TMR_OCPolarity = TMR_OCPolarity_High;

  TMR_OC2Init(TMR3, &TMR_OCInitStructure);

  TMR_OC2PreloadConfig(TMR3, TMR_OCPreload_Enable);



//  /* PWM1 Mode configuration: Channel3 */

//  TMR_OCInitStructure.TMR_OutputState = TMR_OutputState_Enable;

//  TMR_OCInitStructure.TMR_Pulse = 128 - 1 + 88 + 800;

//  TMR_OCInitStructure.TMR_OCPolarity = TMR_OCPolarity_High;

//  TMR_OC3Init(TMR3, &TMR_OCInitStructure);

//  TMR_OC3PreloadConfig(TMR3, TMR_OCPreload_Enable);



  TMR_ARPreloadConfig(TMR3, ENABLE);



  //interrupts

  TMR_INTConfig(TMR3, TMR_INT_Overflow, ENABLE);

  TMR_INTConfig(TMR3, TMR_INT_CC2, ENABLE);

  

  /* TMR3 enable counter */

  TMR_Cmd(TMR3, ENABLE);

}

void DMA_Configuration(void)

{

  DMA_InitType DMA_InitStructure;



  /* DMA1 Channel5 Config */

  DMA_Reset(DMA1_Channel5);

  DMA_DefaultInitParaConfig(&DMA_InitStructure);

  DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)0x4000380C;

  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)vgaBuf;

  DMA_InitStructure.DMA_Direction = DMA_DIR_PERIPHERALDST;

  DMA_InitStructure.DMA_BufferSize = 50;

  DMA_InitStructure.DMA_PeripheralInc = DMA_PERIPHERALINC_DISABLE;

  DMA_InitStructure.DMA_MemoryInc = DMA_MEMORYINC_ENABLE;

  DMA_InitStructure.DMA_PeripheralDataWidth = DMA_PERIPHERALDATAWIDTH_BYTE;

  DMA_InitStructure.DMA_MemoryDataWidth = DMA_MEMORYDATAWIDTH_BYTE;

  //DMA_InitStructure.DMA_Mode = DMA_MODE_CIRCULAR;

  DMA_InitStructure.DMA_Mode = DMA_MODE_NORMAL;

  DMA_InitStructure.DMA_Priority = DMA_PRIORITY_VERYHIGH;

  DMA_InitStructure.DMA_MTOM = DMA_MEMTOMEM_DISABLE;



  DMA_Init(DMA1_Channel5, &DMA_InitStructure);

  

  //interrupts

  DMA_INTConfig(DMA1_Channel5, DMA_INT_TC, ENABLE);



  /* DMA1 Channel5 enable */

  DMA_ChannelEnable(DMA1_Channel5, ENABLE);

}

void SPI_Configuration(void)

{

  SPI_InitType SPI_InitStructure;



  /* SPI_MASTER configuration ------------------------------------------------*/

  SPI_DefaultInitParaConfig(&SPI_InitStructure);

  SPI_InitStructure.SPI_TransMode = SPI_TRANSMODE_FULLDUPLEX;

  SPI_InitStructure.SPI_Mode = SPI_MODE_MASTER;

  SPI_InitStructure.SPI_FrameSize = SPI_FRAMESIZE_8BIT;

  SPI_InitStructure.SPI_CPOL = SPI_CPOL_LOW;

  SPI_InitStructure.SPI_CPHA = SPI_CPHA_1EDGE;

  SPI_InitStructure.SPI_NSSSEL = SPI_NSSSEL_SOFT;

  SPI_InitStructure.SPI_MCLKP = SPI_MCLKP_8;

  SPI_InitStructure.SPI_FirstBit = SPI_FIRSTBIT_MSB;

  SPI_InitStructure.SPI_CPOLY = 7;

  SPI_Init(SPI2, &SPI_InitStructure);

    

  SPI_I2S_DMAEnable(SPI2, SPI_I2S_DMA_TX, ENABLE);

    

  SPI_Enable(SPI2, ENABLE);

}

void DMA1_Channel5_IRQHandler(void)

{

    //关闭DMA

    //DMA_ChannelEnable(DMA1_Channel5, DISABLE);

    DMA1_Channel5->CHCTRL &= (uint16_t)(~DMA_CHCTRL1_CHEN);



    DMA1->ICLR = DMA1_INT_GL5 | DMA1_INT_TC5 | DMA1_INT_HT5 | DMA1_INT_ERR5;

}



void TMR3_GLOBAL_IRQHandler(void)

{

    static __IO uint32_t vga_hs = 0;

    static __IO uint32_t valid = 0;

    static u8* addr = 0;

    

    if(TMR3->STS & TMR_INT_Overflow)

    {

        vga_hs++;



        if(vga_hs >= 628)       //新的一帧，VSYNC开始

        {

            GPIOB->BRE = GPIO_Pins_1;

            vga_hs = 0;

        }

        else if(vga_hs == 4)    //VSYNC结束

        {

            GPIOB->BSRE = GPIO_Pins_1;

            addr = vgaBuf;

        }

        else if(vga_hs == 627)

        {

            valid = 0;

        }

        else if(vga_hs >= 27)   //有效区

        {

            //重新初始化DMA，准备好下一行数据

            DMA_ChannelEnable(DMA1_Channel5, DISABLE);

            

            DMA1_Channel5->CMBA = (u32)addr;

            DMA1_Channel5->TCNT = (XPix / 8);

            

            if(!(vga_hs & 1))

                addr += (XPix / 8);

            valid = 1;

        }



        TMR3->STS = (uint16_t)~TMR_INT_Overflow;

    }

    if(TMR3->STS & TMR_INT_CC2)

    {

        //启动DMA

        if(valid)

            DMA1_Channel5->CHCTRL |= DMA_CHCTRL1_CHEN;



        TMR3->STS = (uint16_t)~TMR_INT_CC2;

    }

}

int main(void)

{

  RCC_AHBPeriphClockCmd(RCC_AHBPERIPH_DMA1, ENABLE);

  RCC_APB1PeriphClockCmd(RCC_APB1PERIPH_TMR3 | RCC_APB1PERIPH_SPI2, ENABLE);

  RCC_APB2PeriphClockCmd(RCC_APB2PERIPH_GPIOA | RCC_APB2PERIPH_GPIOB |

                         RCC_APB2PERIPH_GPIOC | RCC_APB2PERIPH_AFIO, ENABLE);

  GPIO_Configuration();

  DMA_Configuration();

  SPI_Configuration();

  TIM3_Configuration();

  AT32_Board_Init();

  NVIC_Configuration();

  

  tetris_init();

    

  while (1)

  {

    static uint32_t t_10ms = 0;

    static uint16_t led = LED1;



    Delay_ms(10);

    if(++t_10ms >= 10)

    {

      if(++led >= LED_NUM)led = LED2;

      AT32_LEDn_Toggle(led);

      t_10ms = 0;

    }



    sysTime_10ms++;



    JOYPAD_run();

    tetris_key_processing();

    tetris_run();

  }

}