zynq板，想用串口接收中断，但是完全没反应，发送的字符可以接收，但就是没有触发中断，用过串口中断的帮忙看看，是uart初始化有问题，还是gic初始化有问题啊，急
#include "../inc/UartInit.h"
static void UartInterruptHandler(void);
static int GIC_Init(void);
XUartPs UartPs;
XScuGic ScuGic;
char rec;
int Uart_Init(void)
{
int Status;
u32 u32RegBaseAddress;
XUartPs_Config *ConfigPtr;
ConfigPtr = XUartPs_LookupConfig(XPAR_PS7_UART_1_DEVICE_ID);
if (ConfigPtr == (XUartPs_Config *)NULL)
{
return XST_DEVICE_NOT_FOUND;
}
u32RegBaseAddress = ConfigPtr->BaseAddress;//
XUartPs_CfgInitialize(&UartPs, ConfigPtr, ConfigPtr->BaseAddress); //初始化
// XUartPs_SetHandler(&UartPs, (XUartPs_Handler)UartInterruptHandler, (void *)0);
Status = GIC_Init(); //配置GIC
if (Status != XST_SUCCESS)
{
return XST_FAILURE;
}
XUartPs_WriteReg(u32RegBaseAddress, XUARTPS_RXWM_OFFSET, 1);
XUartPs_WriteReg(u32RegBaseAddress, XUARTPS_IER_OFFSET, XUARTPS_IXR_RXFULL|XUARTPS_IXR_RXOVR); //允许接收中断
XUartPs_WriteReg(u32RegBaseAddress, XUARTPS_IDR_OFFSET, ~(XUARTPS_IXR_RXFULL|XUARTPS_IXR_RXOVR)); //允许接收中断
XUartPs_SetBaudRate(&UartPs, UART_BAUDRATE); //设置波特率
XUartPs_WriteReg(u32RegBaseAddress, XUARTPS_MR_OFFSET, 0x20);
XUartPs_WriteReg(u32RegBaseAddress, XUARTPS_CR_OFFSET, 0x17);
printf("0x%x\n",XUartPs_ReadReg(u32RegBaseAddress, XUARTPS_IMR_OFFSET));
return XST_SUCCESS;
}
static int GIC_Init(void)
{
int Status;
XScuGic_Config * ConfigPtr;
ConfigPtr = XScuGic_LookupConfig(XPAR_SCUGIC_0_DEVICE_ID);
Status = XScuGic_CfgInitialize(&ScuGic, ConfigPtr, ConfigPtr->CpuBaseAddress);
if (Status != XST_SUCCESS)
{
return XST_FAILURE;
}
XScuGic_Disable(&ScuGic, UART1_IRQ_ID);
XScuGic_SetPriorityTriggerType(&ScuGic, UART1_IRQ_ID, 0x2, 0x1); //设置优先级和触发类型
XScuGic_Connect (&ScuGic, UART1_IRQ_ID, (Xil_InterruptHandler)UartInterruptHandler, (void *)0);
if (Status != XST_SUCCESS)
{
return XST_FAILURE;
}
XScuGic_Enable(&ScuGic, UART1_IRQ_ID); //允许串口中断
Xil_ExceptionInit();
Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT, (Xil_ExceptionHandler)XScuGic_InterruptHandler, &ScuGic);
Xil_ExceptionEnable();
return XST_SUCCESS;
}
static void UartInterruptHandler(void)
{
volatile u8 StatusRegister;
u32 u32RegBaseAddress;
u32RegBaseAddress = UartPs.Config.BaseAddress;
XUartPs_WriteReg(u32RegBaseAddress, XUARTPS_ISR_OFFSET, 0xffffffff);
StatusRegister = XUartPs_ReadReg(u32RegBaseAddress, XUARTPS_ISR_OFFSET);
/* enable Tx/Rx and reset Tx/Rx data path */
while(StatusRegister & (XUARTPS_SR_RXFULL | XUARTPS_SR_RXOVR))//接收
{
if(StatusRegister & (XUARTPS_SR_RXFULL | XUARTPS_SR_RXOVR))
{
rec = XUartPs_ReadReg(u32RegBaseAddress, XUARTPS_FIFO_OFFSET);
}
}
}
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