zynq 7010/020 AMP双核通信-Vitis2023/2024

AMP双核通信网上一堆重复性的，就不搬运了。
vivado创建工程忽略。本工程只需要保留串口功能和mio即可，不涉及PL端。
仅记录自己的使用过程：（借鉴了原子哥和野火哥）

Vitis创建工程

创建2个platform和2个APP

ddr设置

app0

app1

添加宏定义

在platform cpu1设置中添加-DUSE_AMP=1；

• name：proc_extra_compiler_flags
• value: -g -Wall -Wextra -fno-tree-loop-distribute-patterns -DUSE_AMP=1

	注意value中使用空格分开

程序思路：比较简单

添加程序

CPU0程序

· 配置共享内存地址
· 软中断初始化
· 等待接收串口数据

#include "stdio.h"
#include "xparameters_ps.h"
#include "xil_printf.h"
#include "xscugic.h"
#include "xil_exception.h"
#include "xil_mmu.h"

#define INTC_DEVICE_ID              XPAR_SCUGIC_SINGLE_DEVICE_ID
#define SHARE_BASE_ADDR             0xffff0000  // Shared memory base address
#define CPU1_COPY_ADDR              0xfffffff0 //存放 CPU1 应用起始地址的地址
#define CPU1_START_ADDR             0x10000000//CPU1应用的起始地址

#define CPU1_ID                     XSCUGIC_SPI_CPU1_MASK
#define SOFT_INTR_ID_TO_CPU0        0//CPU0的软中断ID
#define SOFT_INTR_ID_TO_CPU1        1//CPU1的软中断ID

#define sev()                       __asm__("sev")

XScuGic intc;            //定义中断控制器实例
int rec_freq_flag = 0;
int freq_grea = 0;

//启动CPU1,用于固化程序
static void start_cpu1()
{
    //向CPU1_COPY_ADDR写入CPU1应用的起始地址
    Xil_Out32(CPU1_COPY_ADDR, CPU1_START_ADDR);
    dmb();
    sev();
}

static void soft_intr_handler(void *CallbackRef)
{
    xil_printf("cpu0 recive cpu1 intr\r\n");
    rec_freq_flag = 0;
}

static void cpu0_intr_init(XScuGic *intc_ptr)
{

    XScuGic_Config *intc_cfg_ptr;
    intc_cfg_ptr = XScuGic_LookupConfig(INTC_DEVICE_ID);
    if (intc_cfg_ptr == NULL) {
        xil_printf("XScuGic_LookupConfig error\r\n");
        return;
    }
    XScuGic_CfgInitialize(intc_ptr, intc_cfg_ptr, intc_cfg_ptr->CpuBaseAddress);
    Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT, (Xil_ExceptionHandler)XScuGic_InterruptHandler, intc_ptr);
    Xil_ExceptionEnable();
    XScuGic_Connect(intc_ptr, SOFT_INTR_ID_TO_CPU0, (Xil_ExceptionHandler)soft_intr_handler, (void *)intc_ptr);
    XScuGic_Enable(intc_ptr, SOFT_INTR_ID_TO_CPU0);
}



int main()
{
    xil_printf("Hello World\r\n");
    Xil_SetTlbAttributes(SHARE_BASE_ADDR, 0x14de2);//禁用OCM的cache

    Xil_SetTlbAttributes(CPU1_COPY_ADDR, 0x14de2);//禁用OCM的cache

    // start_cpu1();//使用JTAG启动CPU1时，可以注释掉
    cpu0_intr_init(&intc);//初始化CPU0的中断，来响应CPU1的中断
    while (1) {
        if (rec_freq_flag == 0) {
            xil_printf("this is cpu0,please input a num:\r\n");
            scanf("%d", &freq_grea);
            xil_printf("cpu0 input num is %d\r\n", freq_grea);
            Xil_Out8(SHARE_BASE_ADDR, freq_grea);

            XScuGic_SoftwareIntr(&intc, SOFT_INTR_ID_TO_CPU1, CPU1_ID);
            rec_freq_flag = 1;
        }
    }

    return 0;
}

CPU1程序

#include "stdio.h"
#include "xparameters_ps.h"
#include "xil_printf.h"
#include "xgpiops.h"
#include "xil_mmu.h"
#include "xil_exception.h"
#include "xscugic.h"
#include "sleep.h"

#define INTC_DEVICE_ID              XPAR_SCUGIC_SINGLE_DEVICE_ID
#define SHARE_BASE_ADDR             0xffff0000  // Shared memory base address

#define CPU0_ID                     XSCUGIC_SPI_CPU0_MASK
#define SOFT_INTR_ID_TO_CPU0        0//CPU0的软中断ID
#define SOFT_INTR_ID_TO_CPU1        1//CPU1的软中断ID

#define PS_LED1                     0
#define PL_LED1                     55

#define input                       0
#define output                      1

XGpioPs gpiops_inst;
XScuGic Intc;            //定义中断控制器实例
int soft_intr_flag = 0;
int freq_gear = 1000;

static void led_init()
{
    xil_printf("led init\r\n");
    XGpioPs_Config *gpiops_cfg_ptr;
    gpiops_cfg_ptr = XGpioPs_LookupConfig(0);
    XGpioPs_CfgInitialize(&gpiops_inst, gpiops_cfg_ptr, gpiops_cfg_ptr->BaseAddr);
    XGpioPs_SetDirectionPin(&gpiops_inst, PS_LED1, output);
    XGpioPs_SetOutputEnablePin(&gpiops_inst, PS_LED1, 1);
    XGpioPs_WritePin(&gpiops_inst, PS_LED1, 0);
}

static void soft_intr_handler(void *CallbackRef)
{
    xil_printf("cpu1 recive cpu0 intr\r\n");
    soft_intr_flag = 1;
}
static void cpu1_intr_init(XScuGic *intc_ptr)
{
    XScuGic_Config *intc_cfg_ptr;
    intc_cfg_ptr = XScuGic_LookupConfig(INTC_DEVICE_ID);
    XScuGic_CfgInitialize(intc_ptr, intc_cfg_ptr, intc_cfg_ptr->CpuBaseAddress);
    Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT, (Xil_ExceptionHandler)XScuGic_InterruptHandler, intc_ptr);
    Xil_ExceptionEnable();

    XScuGic_Connect(intc_ptr, SOFT_INTR_ID_TO_CPU1, (Xil_ExceptionHandler)soft_intr_handler, (void *)intc_ptr);
    XScuGic_Enable(intc_ptr, SOFT_INTR_ID_TO_CPU1);
}


int main()
{

    Xil_SetTlbAttributes(SHARE_BASE_ADDR, 0x14de2);//禁用OCM的cache
    led_init();
    cpu1_intr_init(&Intc);

    while (1) {
        if (soft_intr_flag) {
            freq_gear = Xil_In8(SHARE_BASE_ADDR);
            xil_printf("cpu1 recive freq gear: %d\r\n", freq_gear);

            XScuGic_SoftwareIntr(&Intc, SOFT_INTR_ID_TO_CPU0, CPU0_ID);
            soft_intr_flag = 0;
        }
        XGpioPs_WritePin(&gpiops_inst, PS_LED1, 1);
        usleep(freq_gear * 1000);
        XGpioPs_WritePin(&gpiops_inst, PS_LED1, 0);
        usleep(freq_gear * 1000);

    }

    return 0;
}

下载程序

这里选择的是使用app1下载

点击加号，选择处理器核elf文件

运行程序

需要注意的是，如果使用普通串口助手，使用scanf函数无法输入的，需要使用串口终端，如putty,mobaxterm