AM3359多个中断时如何设置？

chaiwq2003 2015-2-4 16:04 楼主

测试StarterWare例程中dmTimer定时中断和uartEcho收发中断，单独运行都没有问题
试着把uartEcho中的UART相关内容移植到dmTimer工程中，这时问题来了
移植成功，编译下载运行后，UART收发正常，但是定时器中断没有了
接着做了多次测试，当屏蔽UART中断设置后，dmTimer定时中断回来了
问题好像在于1个中断源没有问题，2个中断源只响应了1个

main()
{
...
   /* This function will enable clocks for the DMTimer2 instance */
DMTimer2ModuleClkConfig();

/* Enable IRQ in CPSR */
IntMasterIRQEnable();

/* Register DMTimer2 interrupts on to AINTC */
DMTimerAintcConfigure();

/* Perform the necessary configurations for DMTimer */
DMTimerSetUp();

/* Enable the DMTimer interrupts */
DMTimerIntEnable(DMTIMER_INSTANCE, DMTIMER_INT_OVF_EN_FLAG);

/* Configuring the system clocks for UART0 instance. */
UART0ModuleClkConfig();

/* Performing the Pin Multiplexing for UART0 instance. */
UARTPinMuxSetup(0);

/* Performing a module reset. */
UARTModuleReset(UART_INSTANCE_BASE_ADD);

/* Performing FIFO configurations. */
UartFIFOConfigure();

UartConfigure(BAUD_RATE_115200, (UART_FRAME_WORD_LENGTH_8 |
                                 UART_FRAME_NUM_STB_1 |
                                 UART_PARITY_NONE));

/* Configuring AINTC to receive UART0 interrupts. */
UARTINTCConfigure();

/* Enabling required UART Interrupts. */
UARTIntEnable(UART_INSTANCE_BASE_ADD,
               (UART_INT_LINE_STAT | UART_INT_THR | UART_INT_RHR_CTI));

/* Start the DMTimer */
DMTimerEnable(DMTIMER_INSTANCE);

while(1){;}

}

static void DMTimerAintcConfigure(void)
{
/* Initialize the ARM interrupt control */
IntAINTCInit();

/* Registering DMTimerIsr */
IntRegister(SYS_INT_TINT2, DMTimerIsr);

/* Set the priority */
//IntPrioritySet(SYS_INT_TINT2, 0, AINTC_HOSTINT_ROUTE_IRQ);
IntPrioritySet(SYS_INT_TINT2, 2, AINTC_HOSTINT_ROUTE_FIQ); //两种设置均不成功

/* Enable the system interrupt */
IntSystemEnable(SYS_INT_TINT2);
}
static void UARTINTCConfigure(void)
{
/* Initializing the ARM Interrupt Controller. */
//IntAINTCInit();    //定时中断配置中已经进行了初始化, 此处不再初始化

/* Registering the Interrupt Service Routine(ISR). */
IntRegister(UART_INSTANCE_INT_NUM, UARTIsr);
//#define UART_INSTANCE_INT_NUM    (SYS_INT_UART0INT)
//#define SYS_INT_UART0INT                      (72)

/* Setting the priority for the system interrupt in AINTC. */
IntPrioritySet(UART_INSTANCE_INT_NUM, 0, AINTC_HOSTINT_ROUTE_IRQ);

/* Enabling the system interrupt in AINTC. */
IntSystemEnable(UART_INSTANCE_INT_NUM);
}

请教是不是因两个中断源的问题，如何处理？