外设中断优先级设置

只看该作者 · 2015-5-14 22:39

本帖最后由 ilikedota 于 2015-5-14 22:46 编辑

最近在玩ucos-ii，在NXP的LPC2378上移植，先是看别人做好的例程，发现在程序中所有的外设中断都不设置优先级，我觉得这很奇怪，难道使用操作后连硬件的响应优先级都不用设置了？完全靠系统任务的软优先级？贴出程序给大家看看，不知道是不是我理解错了。
1、串口0中断设置
VICIntSelect &= ~(1 << VIC_UART0);       /* Configure the timer interrupt as an IRQ source */
VICVectAddr6  =  (CPU_INT32U)Uart0_Exception; /* Set the vector address */
VICIntEnable  =  (1 << VIC_UART0);             /* Enable the timer interrupt source */
2、串口3中断设置
VICIntSelect &= ~(1 << VIC_UART3);       /* Configure the timer interrupt as an IRQ source    */
VICVectAddr29  =  (CPU_INT32U)Uart3_Exception;  /* Set the vector address                */
VICIntEnable  =  (1 << VIC_UART3);             /* Enable the timer interrupt source          */
3、CAN中断设置
VICIntSelect       &=       ~(1 << VIC_CAN12);       /* Configure the timer interrupt as an IRQ source    */
VICVectAddr23       =       (CPU_INT32U)CAN_Exception;  /* Set the vector address  */
VICIntEnable       =       (1 << VIC_CAN12);       /* Enable the timer interrupt source    */

static  void  VIC_Init (void)
{
VICIntEnClr =  0xFFFFFFFF;                               /* Disable ALL interrupts                                  */
VICVectAddr =  0;                                        /* Acknowlege any pending VIC interrupt                   */
VICProtection =  0;                                        /* Allow VIC register access in User of Priviledged modes */

VICVectAddr0  = (CPU_INT32U)VIC_DummyWDT;                /* Set the vector address                                  */
VICVectAddr1  = (CPU_INT32U)VIC_DummySW;
VICVectAddr2  = (CPU_INT32U)VIC_DummyDEBUGRX;
VICVectAddr3  = (CPU_INT32U)VIC_DummyDEBUGTX;
VICVectAddr4  = (CPU_INT32U)VIC_DummyTIMER0;
VICVectAddr5  = (CPU_INT32U)VIC_DummyTIMER1;
VICVectAddr6  = (CPU_INT32U)VIC_DummyUART0;
VICVectAddr7  = (CPU_INT32U)VIC_DummyUART1;
VICVectAddr8  = (CPU_INT32U)VIC_DummyPWM01;
VICVectAddr9  = (CPU_INT32U)VIC_DummyI2C0;
VICVectAddr10 = (CPU_INT32U)VIC_DummySPI;
VICVectAddr11 = (CPU_INT32U)VIC_DummySSP1;
VICVectAddr12 = (CPU_INT32U)VIC_DummyPLL;
VICVectAddr13 = (CPU_INT32U)VIC_DummyRTC;
VICVectAddr14 = (CPU_INT32U)VIC_DummyEINT0;
VICVectAddr15 = (CPU_INT32U)VIC_DummyEINT1;
VICVectAddr16 = (CPU_INT32U)VIC_DummyEINT2;
VICVectAddr17 = (CPU_INT32U)VIC_DummyEINT3;
VICVectAddr18 = (CPU_INT32U)VIC_DummyAD0;
VICVectAddr19 = (CPU_INT32U)VIC_DummyI2C1;
VICVectAddr20 = (CPU_INT32U)VIC_DummyBOD;
VICVectAddr21 = (CPU_INT32U)VIC_DummyETHERNET;
VICVectAddr22 = (CPU_INT32U)VIC_DummyUSB;
VICVectAddr23 = (CPU_INT32U)VIC_DummyCAN01;
VICVectAddr24 = (CPU_INT32U)VIC_DummyMMC;
VICVectAddr25 = (CPU_INT32U)VIC_DummyGP_DMA;
VICVectAddr26 = (CPU_INT32U)VIC_DummyTIMER2;
VICVectAddr27 = (CPU_INT32U)VIC_DummyTIMER3;
VICVectAddr28 = (CPU_INT32U)VIC_DummyUART2;
VICVectAddr29 = (CPU_INT32U)VIC_DummyUART3;
VICVectAddr30 = (CPU_INT32U)VIC_DummyI2C2;
VICVectAddr31 = (CPU_INT32U)VIC_DummyI2S;
}

/**************** DUMMY INTERRUPT HANDLERS *************************************************************/

static  void  VIC_Dummy (void)
{
while (DEF_FALSE)
{
      ;
}
}

static  void  VIC_DummyWDT (void)
{
VIC_SpuriousInt = VIC_WDT;
VIC_Dummy();
}

static  void  VIC_DummySW (void)
{
VIC_SpuriousInt = VIC_SW;
VIC_Dummy();
}

static  void  VIC_DummyDEBUGRX (void)
{
VIC_SpuriousInt = VIC_DEBUGRX;
VIC_Dummy();
}

static  void  VIC_DummyDEBUGTX (void)
{
VIC_SpuriousInt = VIC_DEBUGTX;
VIC_Dummy();
}

static  void  VIC_DummyTIMER0 (void)
{
VIC_SpuriousInt = VIC_TIMER0;
VIC_Dummy();
}

static  void  VIC_DummyTIMER1 (void)
{
VIC_SpuriousInt = VIC_TIMER1;
VIC_Dummy();
}

static  void  VIC_DummyUART0 (void)
{
VIC_SpuriousInt = VIC_UART0;
VIC_Dummy();
}

static  void  VIC_DummyUART1 (void)
{
VIC_SpuriousInt = VIC_UART1;
VIC_Dummy();
}

static  void  VIC_DummyPWM01 (void)
{
VIC_SpuriousInt = VIC_PWM01;
VIC_Dummy();
}

static  void  VIC_DummyI2C0 (void)
{
VIC_SpuriousInt = VIC_I2C0;
VIC_Dummy();
}

static  void  VIC_DummySPI (void)
{
VIC_SpuriousInt = VIC_SPI;
VIC_Dummy();
}

static  void  VIC_DummySSP1 (void)
{
VIC_SpuriousInt = VIC_SSP1;
VIC_Dummy();
}

static  void  VIC_DummyPLL (void)
{
VIC_SpuriousInt = VIC_PLL;
VIC_Dummy();
}

static  void  VIC_DummyRTC (void)
{
VIC_SpuriousInt = VIC_RTC;
VIC_Dummy();
}

static  void  VIC_DummyEINT0 (void)
{
VIC_SpuriousInt = VIC_EINT0;
VIC_Dummy();
}

static  void  VIC_DummyEINT1 (void)
{
VIC_SpuriousInt = VIC_EINT1;
VIC_Dummy();
}

static  void  VIC_DummyEINT2 (void)
{
VIC_SpuriousInt = VIC_EINT2;
VIC_Dummy();
}

static  void  VIC_DummyEINT3 (void)
{
VIC_SpuriousInt = VIC_EINT3;
VIC_Dummy();
}

static  void  VIC_DummyAD0 (void)
{
VIC_SpuriousInt = VIC_AD0;
VIC_Dummy();
}

static  void  VIC_DummyI2C1 (void)
{
VIC_SpuriousInt = VIC_I2C1;
VIC_Dummy();
}

static  void  VIC_DummyBOD (void)
{
VIC_SpuriousInt = VIC_BOD;
VIC_Dummy();
}

static  void  VIC_DummyETHERNET (void)
{
VIC_SpuriousInt = VIC_ETHERNET;
VIC_Dummy();
}

static  void  VIC_DummyUSB (void)
{
VIC_SpuriousInt = VIC_USB;
VIC_Dummy();
}

static  void  VIC_DummyCAN01 (void)
{
VIC_SpuriousInt = VIC_CAN12;
VIC_Dummy();
}

static  void  VIC_DummyMMC (void)
{
VIC_SpuriousInt = VIC_MMC;
VIC_Dummy();
}

static  void  VIC_DummyGP_DMA (void)
{
VIC_SpuriousInt = VIC_GP_DMA;
VIC_Dummy();
}

static  void  VIC_DummyTIMER2 (void)
{
VIC_SpuriousInt = VIC_TIMER2;
VIC_Dummy();
}

static  void  VIC_DummyTIMER3 (void)
{
VIC_SpuriousInt = VIC_TIMER3;
VIC_Dummy();
}

static  void  VIC_DummyUART2 (void)
{
VIC_SpuriousInt = VIC_UART2;
VIC_Dummy();
}

static  void  VIC_DummyUART3 (void)
{
VIC_SpuriousInt = VIC_UART3;
VIC_Dummy();
}

static  void  VIC_DummyI2C2 (void)
{
VIC_SpuriousInt = VIC_I2C2;
VIC_Dummy();
}

static  void  VIC_DummyI2S (void)
{
VIC_SpuriousInt = VIC_I2S;
VIC_Dummy();
}