【XR806开发板试用】2、UDP控制的呼吸灯.

[zthzz]

【XR806开发板试用】1、UDP通信测试

上篇文章测试了XR806的UDP通信.
控制PWM控制相关的函数在device/xradio/xr806/adapter/hals/iot_hardware/wifiiot_lite文件夹下的iot_pwm.c 相关函数一共有一下四个.

    //port 指定输出引脚
    //duty 指定输出PWM占空比 范围1-99
    //freq 指定PWM输出频率
    unsigned int IoTPwmInit(unsigned int port);
    unsigned int IoTPwmDeinit(unsigned int port);
    unsigned int IoTPwmStart(unsigned int port, unsigned short duty,unsigned int freq);
    unsigned int IoTPwmStop(unsigned int port);

驱动控制代码

    #include "iot_pwm.h"
    
    #define pwm_channl1         0U
    #define pwm_channl2         1U
    #define pwm_channl3         2U
    #define pwm_channl4         3U
    
    void udp_echoserver_init(void)
    {
    //略
    //在udp初始化结束后初始化PWM输出引脚.
            IoTPwmInit(pwm_channl1);
            IoTPwmInit(pwm_channl2);
            IoTPwmInit(pwm_channl3);
            IoTPwmInit(pwm_channl4);
    }
    
    void udp_echoserver_receive_callback(void *arg, struct udp_pcb *upcb,struct pbuf *p, const ip_addr_t *addr, u16_t port)
    {
        udp_connect(upcb, addr, UDP_CLIENT_PORT);
        udp_send(upcb, p);
        udpReceiveCallback(p->payload, p->len);        //recave call 
        udp_disconnect(upcb);
        pbuf_free(p);
    }
    //udp接收回调函数中根据接收到的数据控制PWM占空比.
    
    void udpReceiveCallback(char *p, int len)        //recave call 
    {
        if(len<42+5)
            return;
        p+=42;
        //p[0]留作开关量控制.
        if(p[1]<5||p[1]>99)
            IoTPwmStop(pwm_channl1);
        else
            IoTPwmStart(pwm_channl1, p[1], 2000);
    
        if(p[2]<5||p[2]>99)
            IoTPwmStop(pwm_channl2);
        else
            IoTPwmStart(pwm_channl2, p[2], 2000);
    
        if(p[3]<5||p[3]>99)
            IoTPwmStop(pwm_channl3);
        else
            IoTPwmStart(pwm_channl3, p[3], 2000);
    
        if(p[4]<5||p[4]>99)
            IoTPwmStop(pwm_channl4);
        else
            IoTPwmStart(pwm_channl4, p[4], 2000);

[wlb965]

@zthzz
使用udp相关的头文件的时候发现了一堆找不到路径的问题，我是在/demo/hello_demo 文件夹下敲的代码，而用到的文件是在net/lwip-1.4.1/lwip 文件夹里，应该可以通过修改Makefile文件达到但是，小白不会。