求高手给讲讲MCF52255的UART1中断(已解决)

雁飞鹰扬 · 发表于 2014-6-1 10:55:33

关于UART中断，我该如何配置UART的init？我按照如下的代码配置了UART1，也在exception中配置了中断向量，可就是不知道为什么进不去中断，求高手解惑！
void uart1_init(unsigned long baudrate)
{

unsigned int div;
uint32 sysclk=80000000;
MCF_GPIO_PUBPAR=MCF_GPIO_PUBPAR_UTXD1_UTXD1
|MCF_GPIO_PUBPAR_URXD1_URXD1;
//|MCF_GPIO_PUBPAR_URTS1_URTS1
//|MCF_GPIO_PUBPAR_UCTS1_UCTS1;

// Reset Transmitter/Receiver/Mode Register
MCF_UART1_UCR|=(0
|MCF_UART_UCR_RESET_TX
|MCF_UART_UCR_RESET_RX
|MCF_UART_UCR_RESET_MR);

//No parity, 8bit data
MCF_UART1_UMR1=(0
|MCF_UART_UMR_RXIRQ
|MCF_UART_UMR_PM_NONE
|MCF_UART_UMR_BC_8)
//1bit stop
MCF_UART1_UMR2|=MCF_UART_UMR_CM_NORMAL
|MCF_UART_UMR_SB_STOP_BITS_1;

//Set Rx and Tx baud by SYSTEM CLOCK
MCF_UART1_UCSR =(0
| MCF_UART_UCSR_RCS_SYS_CLK
| MCF_UART_UCSR_TCS_SYS_CLK);

//set baude rate
div=sysclk/32/baudrate;
MCF_UART1_UBG1=(unsigned char)(div>>8);
MCF_UART1_UBG2=(unsigned char)(div&0x00ff);

//Set UART interrupts
MCF_UART1_UISR=MCF_UART_UISR_FFULL_RXRDY
|MCF_UART_UISR_DB
|MCF_UART_UISR_COS;
MCF_INTC0_IMRL&=~MCF_INTC_IMRL_MASKALL;
MCF_INTC0_IMRH&=~MCF_INTC_IMRL_INT_MASK14
MCF_INTC0_ICR14=MCF_INTC_ICR_IP(7)+MCF_INTC_ICR_IL(3);
// Enable Tx/Rx
MCF_UART1_UCR = (0
| MCF_UART_UCR_TX_ENABLED
| MCF_UART_UCR_RX_ENABLED);
}
__declspec(interrupt:0) void UART1_interrupt(void)//14
{
beep(50);
uart1_putstr("Uart1 interrupt is OK!");
}

我知道答案目前已有2人回答

阅读全文