html网页设计代码购物网站,免费高清图片素材网站有哪些,网站seo关键词,wordpress社交GPIO 中断系统初始化流程#xff1a; 第一步:初始化 cpu 的异常处理功能 第二步#xff1a;初始化中断控制器 第三步#xff1a;向 CPU 注册异常处理回调函数#xff1b; 第四步#xff1a;将中断控制器中的对应中断 ID 的中断与中断控制器相连接 第五步#xff1a;设置 …GPIO 中断系统初始化流程 第一步:初始化 cpu 的异常处理功能 第二步初始化中断控制器 第三步向 CPU 注册异常处理回调函数 第四步将中断控制器中的对应中断 ID 的中断与中断控制器相连接 第五步设置 GPIO 的中断类型比如高电平中断、低电平中断、上升沿中断、 下降沿中断等。 第六步设置 GPIO 中断回调函数这里设置的回调函数是用于用户使用的。 第七步使能 GPIO 的对应 PIN 的中断 第八步使能中断控制器 第九步使能异常处理功能 注意AMP模式下对来自PL端的中断要用XScuGic_InterruptMaptoCpu()函数将CPU和中断对应起来 GIC在ZYNQ中只有一个当两个CPU都需要中断时要编程确定中断初始化的顺序
1.PS端GPIO中断
/*使用中断用PS端口的GPIO操控PS端口的LED
*/
#include stdio.h
#include xparameters.h
#include xgpiops.h
#include sleep.h
#include xscugic.h
//器件ID
#define GPIO_DEVICE_ID XPAR_XGPIOPS_0_DEVICE_ID
#define INTC_DEVICE_ID XPAR_SCUGIC_SINGLE_DEVICE_ID
//GPIO的中断号 52
#define GPIO_INTERRUPT_ID XPAR_XGPIOPS_0_INTR//核心板上PS端LED
#define MIO_0_LED 0
//核心板上PS端按键
#define MIO_12_KEY 12
//实例指针
XGpioPs_Config * ConfigPtr ;
XScuGic_Config * IntcConfig ; /* Instance of the interrupt controller */
//实例
XGpioPs Gpio ; /* The driver instance for GPIO Device. */
XScuGic Intc ; /* The Instance of the Interrupt Controller Driver */void SetupInterruptSystem(XScuGic *GicInstancePtr, XGpioPs *Gpio,u16 GpioIntrId);
void IntrHandler();u32 key_press 0;int main(){printf(GPIO INTERRUPT TEST!\n\r);u32 led_value 0;//根据器件ID,查找器件的配置信息,返回值是一个结构体指针XGpioPs_Config *ConfigPtr XGpioPs_LookupConfig(GPIO_DEVICE_ID);//初始化GPIO驱动XGpioPs_CfgInitialize(Gpio, ConfigPtr,ConfigPtr-BaseAddr);//设置GPIO方向(0输入 1输出)XGpioPs_SetDirectionPin(Gpio, MIO_0_LED, 1);XGpioPs_SetDirectionPin(Gpio, MIO_12_KEY, 0);//设置输出使能(0关闭 1打开)XGpioPs_SetOutputEnablePin(Gpio, MIO_0_LED, 1);//设置中断系统SetupInterruptSystem(Intc, Gpio, GPIO_INTERRUPT_ID);//写数据到GPIOwhile(1){if(key_press){XGpioPs_IntrClearPin(Gpio, MIO_12_KEY);led_value ~led_value;key_press 0;//清除之前的中断状态寄存器(int_state)XGpioPs_WritePin(Gpio,MIO_0_LED, led_value);//延时消抖usleep(10000);XGpioPs_IntrEnablePin(Gpio, MIO_12_KEY);//打开MIO的中断使能信号}}return 0;
}void SetupInterruptSystem(XScuGic *GicInstancePtr, XGpioPs *Gpio,u16 GpioIntrId)
{//查找器件配置信息并进行初始化IntcConfig XScuGic_LookupConfig(INTC_DEVICE_ID);XScuGic_CfgInitialize(GicInstancePtr, IntcConfig,IntcConfig-CpuBaseAddress);Xil_ExceptionInit();//初始化ARM处理器异常句柄Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT,(Xil_ExceptionHandler)XScuGic_InterruptHandler,GicInstancePtr);//给IRQ注册异常处理程序Xil_ExceptionEnableMask(XIL_EXCEPTION_IRQ);//使能处理器的中断XScuGic_Connect(GicInstancePtr, GpioIntrId,(Xil_ExceptionHandler)IntrHandler,(void *)Gpio);//关联中断处理函数当中断发生时程序执行第三个输出变量函数XScuGic_Enable(GicInstancePtr, GpioIntrId);//为GPIO器件使能中断XGpioPs_SetIntrTypePin(Gpio, MIO_12_KEY, XGPIOPS_IRQ_TYPE_EDGE_FALLING);//设置指定引脚的中断触发类型XGpioPs_IntrEnablePin(Gpio, MIO_12_KEY);//打开MIO的中断使能信号
}void IntrHandler(){printf(interrupt detect!\n\r);key_press 1;XGpioPs_IntrDisablePin(Gpio, MIO_12_KEY);//关闭中断
}
PL端GPIO触发
/** GPIO中断实验* */
#include stdio.h
#include xil_printf.h
#include xgpiops.h
#include xparameters.h
#include sleep.h
#include xscugic.h#define GPIO_DEVICE_ID XPAR_XGPIOPS_0_DEVICE_ID //GPIO设备ID
#define INTC_DEVICE_ID XPAR_PS7_SCUGIC_0_DEVICE_ID //中断ID#define GPIO_INTR_ID XPAR_XGPIOPS_0_INTR //GPIO的中断序列号#define SW_BANK_ID XGPIOPS_BANK2//EMIO的引脚号
#define SW0 54 //EMIO的54引脚
#define LED0 55 //EMIO的55引脚
#define LED1 56 //EMIO的56引脚static XGpioPs GpioPs; //GPIO实例
static XGpioPs_Config* GpioCfgPtr; //GPIO初始化指针
static XScuGic GicPs; //中断控制器实例
static XScuGic_Config* GicPsPtr; //中断控制器指针int initGpio();
int setup_Interrupt();
void intrHandler(void * CallBackRef,u32 Bank,u32 status);
void breath_led();int main(){initGpio();print(GPIO 初始化成功\n);setup_Interrupt();print(GPIO interrupt 初始化成功\n);while(1){}return 0;
}int initGpio(){int status;GpioCfgPtr XGpioPs_LookupConfig(GPIO_DEVICE_ID);status XGpioPs_CfgInitialize(GpioPs,GpioCfgPtr,GpioCfgPtr-BaseAddr);if(status ! XST_SUCCESS){return status;}XGpioPs_SetDirectionPin(GpioPs,LED0,0x01);XGpioPs_SetDirectionPin(GpioPs,LED1,0x01);XGpioPs_SetOutputEnablePin(GpioPs,LED0,0x01);XGpioPs_SetOutputEnablePin(GpioPs,LED1,0x01);XGpioPs_SetDirectionPin(GpioPs,SW0,0x00);XGpioPs_SetOutputEnablePin(GpioPs,SW0,0x00);return XST_SUCCESS;
}int setup_Interrupt(){int status;
//1.初始化异常处理函数Xil_ExceptionInit();
//2.初始化中断设备控制器GicPsPtr XScuGic_LookupConfig(INTC_DEVICE_ID);status XScuGic_CfgInitialize(GicPs,GicPsPtr,GicPsPtr-CpuBaseAddress);if(status ! XST_SUCCESS){return status;}
//3.注册异常处理函数(中断异常ID,异常处理函数向异常处理函数里面传入的参数)Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT,(Xil_ExceptionHandler)XScuGic_InterruptHandler,GicPs);
//4.连接中断处理函数(中断控制器的实例,GPIO的中断ID,中断处理函数,一般是被连接设备的指针)status XScuGic_Connect(GicPs,GPIO_INTR_ID,(Xil_InterruptHandler)XGpioPs_IntrHandler,GpioPs);if(status ! XST_SUCCESS){return status;}
/*5.设置中断类型(驱动实例GPIO所在的bankID,32位的掩码对应bank的32个引脚(0电平敏感1边沿敏感)* 如果设置为电平有效则该次出设置高电平还是低电平有效)如果设置为边沿触发则此处设置是单边沿还是双边沿*/XGpioPs_SetIntrType(GpioPs,SW_BANK_ID,0xffffffff,0x00,XGPIOPS_IRQ_TYPE_EDGE_RISING);
//6.设置GPIO回调函数产生中断时进入此函数XGpioPs_SetCallbackHandler(GpioPs,(void *) GpioPs,intrHandler);
//7.使能对应PIN的中断XGpioPs_IntrEnable(GpioPs,SW_BANK_ID,1(SW0-54));
//8.使能中断控制器中GPIO的中断XScuGic_Enable(GicPs,GPIO_INTR_ID);
//9.使能异常处理Xil_ExceptionEnableMask(XIL_EXCEPTION_IRQ);return XST_SUCCESS;
}void intrHandler(void * CallBackRef,u32 Bank,u32 status){XGpioPs * GpioPtr;GpioPtr (XGpioPs *)CallBackRef;u32 intrstatus;//判断中断是否由指定引脚产生是则继续中断处理函数intrstatus XGpioPs_IntrGetStatusPin(GpioPtr,SW0);if(intrstatus 1){//清除中断标志关闭中断引脚防止二次进入中断XGpioPs_IntrClearPin(GpioPtr,SW0);XGpioPs_IntrDisablePin(GpioPtr,SW0);u32 readSW;//按键消抖int cnt;while(cnt 100){readSW XGpioPs_ReadPin(GpioPtr,SW0);if(readSW 1){cnt ;}else{cnt 0;}usleep(1000);}readSW XGpioPs_ReadPin(GpioPtr,SW0);printf(readSW %d\n,(int)readSW);if(readSW 0){XGpioPs_WritePin(GpioPtr,LED1,0x01);}}//打开中断使能XGpioPs_IntrEnablePin(GpioPtr,SW0);
}void breath_led(){initGpio();int i,j;int led 1;while(1){for(i0;i1000;i){for(i0;i1000;i){usleep(1);if(ji){XGpioPs_WritePin(GpioPs,LED0,led);}else{XGpioPs_WritePin(GpioPs,LED0,~led);}}}}
}PL端EMIO中断以及串口中断 #include stdio.h
#include platform.h
#include xil_printf.h
#include AXI_reglist.h
#include xparameters.h
#include xgpiops.h
#include xscugic.h
#include xuartps.h
#include sleep.h#define GPIO_DEV_ID XPAR_PS7_GPIO_0_DEVICE_ID
#define GPIO_INTERRUPT_ID XPS_GPIO_INT_ID //来自FPGA的EMIO中断
#define GIC_ID XPAR_PS7_SCUGIC_0_DEVICE_ID
#define UART1_DEV_ID XPAR_PS7_UART_1_DEVICE_ID
#define UART1INTR XPAR_PS7_UART_1_INTR#define EMIO_CYCLE_CNT_VALID 54 //接收FPGA端的周期计数有效信号引脚 高电平有效
#define EMIO_DELAY_CTRL 55 //发送FPGA端的延时控制字有效信号
#define EMIO_DIV_CNT_VALID 56 //发送给FPGA的分频有效信号 高电平有效
#define EMIO_BANK_ID 2 //EMIO的bank id
#define UART_SEND_DELAY 4 //串口发送间隔
#define DELAY_CTRL 0 //延时控制字static XGpioPs GpioPs;
static XGpioPs_Config * GpioCnfPtr;
static XScuGic ScuGic;
static XScuGic_Config * ScuGicCfgPtr;
static XUartPs Uart1;
static XUartPs_Config * Uart1CfgPtr;void initGpio(); //初始化并设置管脚的输入输出
void uart1Iint(); //初始化uart1
void initSwIntr(); //设置中断并关联中断函数void uart1Handler(void *CallBackRef); //串口接收中断
void f2pIntr0Handler(void * CallBackRef); //FPGA端的EMIO中断
u32 uart_send_cnt 0 ;
u32 delay_ctrl 0 ;
int main()
{//配置延时控制字的初始值uart_send_cnt 0;WriteDivCnt(10000);//GPIO初始化initGpio();WriteDelayCtrl(DELAY_CTRL);XGpioPs_WritePin(GpioPs,EMIO_DELAY_CTRL,0);XGpioPs_WritePin(GpioPs,EMIO_DELAY_CTRL,1);XGpioPs_WritePin(GpioPs,EMIO_DELAY_CTRL,0);//串口外设初始化uart1Iint();XGpioPs_WritePin(GpioPs,EMIO_DIV_CNT_VALID,0);XGpioPs_WritePin(GpioPs,EMIO_DIV_CNT_VALID,1);XGpioPs_WritePin(GpioPs,EMIO_DIV_CNT_VALID,0);sleep(1);//中断初始化initSwIntr();while(1){}return 0;
}//initial gpio func
void initGpio(){GpioCnfPtr XGpioPs_LookupConfig(GPIO_DEV_ID);XGpioPs_CfgInitialize(GpioPs,GpioCnfPtr,GpioCnfPtr-BaseAddr);//设置两个管脚的输入输出模式 0输入 1输出XGpioPs_SetDirectionPin(GpioPs,EMIO_CYCLE_CNT_VALID,0x00);XGpioPs_SetDirectionPin(GpioPs,EMIO_DELAY_CTRL,0x01);XGpioPs_SetDirectionPin(GpioPs,EMIO_DIV_CNT_VALID,0x01);//设置管脚的输入输出使能XGpioPs_SetOutputEnablePin(GpioPs,EMIO_DIV_CNT_VALID,0x01);XGpioPs_SetOutputEnablePin(GpioPs,EMIO_DELAY_CTRL,0x01);
}void uart1Iint(){u32 intrMask0;Uart1CfgPtr XUartPs_LookupConfig(UART1_DEV_ID);XUartPs_CfgInitialize(Uart1,Uart1CfgPtr,Uart1CfgPtr-BaseAddress);//设置uart工作模式XUartPs_SetBaudRate(Uart1,115200);//设置接收FIFO的触发阈值XUartPs_SetFifoThreshold(Uart1, 2);XUartPs_SetOperMode(Uart1,XUARTPS_OPER_MODE_NORMAL);intrMask XUARTPS_IXR_RXOVR;XUartPs_SetInterruptMask(Uart1,intrMask);
}//uart recv interrupt
void uart1Handler(void *CallBackRef){XUartPs *uart_instance_ptr (XUartPs *) CallBackRef;u32 rec_data_L 0 ;u32 rec_data_H 0 ;u32 rec_data 0;u32 isr_status ; //中断状态标志//读取中断ID寄存器判断触发的是哪种中断isr_status XUartPs_ReadReg(uart_instance_ptr-Config.BaseAddress,XUARTPS_IMR_OFFSET);isr_status XUartPs_ReadReg(uart_instance_ptr-Config.BaseAddress,XUARTPS_ISR_OFFSET);//判断中断标志位RxFIFO是否触发if (isr_status (u32)XUARTPS_IXR_RXOVR){rec_data_L XUartPs_RecvByte(XPAR_PS7_UART_1_BASEADDR);rec_data_H XUartPs_RecvByte(XPAR_PS7_UART_1_BASEADDR);rec_data rec_data_L | (rec_data_H8);WriteDelayCtrl(rec_data);XGpioPs_WritePin(GpioPs,EMIO_DELAY_CTRL,0);XGpioPs_WritePin(GpioPs,EMIO_DELAY_CTRL,1);XGpioPs_WritePin(GpioPs,EMIO_DELAY_CTRL,0);//清除中断标志XUartPs_WriteReg(uart_instance_ptr-Config.BaseAddress,XUARTPS_ISR_OFFSET, XUARTPS_IXR_RXOVR) ;}
}//initial software interrept
void initSwIntr(){Xil_ExceptionInit();ScuGicCfgPtr XScuGic_LookupConfig(GIC_ID);XScuGic_CfgInitialize(ScuGic,ScuGicCfgPtr,ScuGicCfgPtr-CpuBaseAddress);Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT,(Xil_ExceptionHandler)XScuGic_InterruptHandler,ScuGic);//connect uart1 interruptXScuGic_Connect(ScuGic,UART1INTR,(Xil_ExceptionHandler)uart1Handler,Uart1);XScuGic_SetPriorityTriggerType(ScuGic , UART1INTR , 0xA0 ,0x01);XScuGic_Enable(ScuGic,UART1INTR);//connect fpga interruptXScuGic_Connect(ScuGic,GPIO_INTERRUPT_ID,(Xil_ExceptionHandler)f2pIntr0Handler,GpioPs);XGpioPs_SetIntrType(GpioPs,XGPIOPS_BANK2,1(EMIO_CYCLE_CNT_VALID-54),1(EMIO_CYCLE_CNT_VALID-54),0);//打开中断使能对IO管脚配置XGpioPs_IntrEnablePin(GpioPs, EMIO_CYCLE_CNT_VALID);XScuGic_Enable(ScuGic,GPIO_INTERRUPT_ID);XScuGic_SetPriorityTriggerType(ScuGic , GPIO_INTERRUPT_ID , 0xB0 ,0x01);Xil_ExceptionEnable();
}void f2pIntr0Handler(void * CallBackRef){XGpioPs *GpioPtr;GpioPtr (XGpioPs *)CallBackRef;u32 intrstatus;u32 cyclecnt 0;intrstatus XGpioPs_IntrGetStatusPin(GpioPtr,EMIO_CYCLE_CNT_VALID);if(intrstatus 1){if(delay_ctrl 1024){if(uart_send_cnt UART_SEND_DELAY){uart_send_cnt 0;}if(uart_send_cnt 0){cyclecnt ReadCycleCnt();//高位在前低位在后XUartPs_SendByte(XPAR_PS7_UART_1_BASEADDR,(cyclecnt 24) 0xff);XUartPs_SendByte(XPAR_PS7_UART_1_BASEADDR,(cyclecnt 16) 0xff);XUartPs_SendByte(XPAR_PS7_UART_1_BASEADDR,(cyclecnt 8) 0xff);XUartPs_SendByte(XPAR_PS7_UART_1_BASEADDR,(cyclecnt 0) 0xff);WriteDelayCtrl(delay_ctrl);XGpioPs_WritePin(GpioPs,EMIO_DELAY_CTRL,0);XGpioPs_WritePin(GpioPs,EMIO_DELAY_CTRL,1);XGpioPs_WritePin(GpioPs,EMIO_DELAY_CTRL,0);}if(uart_send_cnt 1){delay_ctrl delay_ctrl 1;}uart_send_cnt uart_send_cnt 1;}XGpioPs_IntrEnablePin(GpioPtr,EMIO_CYCLE_CNT_VALID);}
}
