MTK 9.0平台上zigbee_bm023模块的调试

MTK 9.0平台上zigbee_bm023模块的调试

zigbee_bm023模块:
默认3.3v供电为： 低电平，复位引脚 为高电平；
使用uart1:节点为ttyS1
操作节点：
3.3v供电引脚：/sys/class/zigbee_bm023_by_elink/zigbee_bm023_by_elink/zigbee_power_gpio_control
复位引脚：/sys/class/zigbee_bm023_by_elink/zigbee_bm023_by_elink/zigbee_rst_gpio_control

1 查看如下图，原理图以及gpio映射表可以知道zigbee_bm023模块 使用3.3v作为供电，供电引脚为gpio24,复位引脚为：gpio25,由此可以配置st3x3x 光距感传感器 的dts

配置zigbee_bm023模块的dts

	zigbee_bm023:zigbee_bm023{
		compatible = "mediatek,zigbee_bm023";
		status = "okay";

		zigbee_3v3_en_gpio = <&pio 24 0>;
		zigbee_rst_gpio = <&pio 25 0>;
	};

2 编写zigbee_bm023驱动

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#define ZIGBEE_DEVICE_NAME "zigbee_bm023"
#define ZIGBEE_DEVNAME "zigbee_bm023_by_elink"//节点名称
static dev_t zigbee_devno;//设备号
static struct class *zigbee_class;//class类
static struct device *zigbee_device;//设备
static int zigbee_power_gpio_ctrl_status = 0;
static int zigbee_rst_gpio_ctrl_status = 0;
#define  ZIGBEE_PAGE_SIZE    10

static unsigned int zigbee_3v3_en_gpio;
static unsigned int zigbee_rst_gpio;

static const struct of_device_id zigbee_bm023_match_table[] = {
	{ .compatible = "mediatek,zigbee_bm023", },
	{/* KEEP THIS */},
};
MODULE_DEVICE_TABLE(of, zigbee_bm023_match_table);

static ssize_t zigbee_power_gpio_control_show(struct device *dev, struct device_attribute *attr, char *buf)
{

//	printk("moved in func: %s zigbee_power_gpio_ctrl_status  = %d \n", __func__,zigbee_power_gpio_ctrl_status);

	return snprintf(buf, ZIGBEE_PAGE_SIZE,"%d\n", zigbee_power_gpio_ctrl_status);
}


static ssize_t zigbee_power_gpio_control_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{


	int temp;

	temp = simple_strtol(buf, NULL, 10);//把字符串转为数字
	zigbee_power_gpio_ctrl_status = temp;

	//printk("in func: %s, zigbee_power_gpio_ctrl_status = %d", __func__, zigbee_power_gpio_ctrl_status);
//	printk("in func: %s, count = %d", __func__, count);

	if(zigbee_power_gpio_ctrl_status == 1) {
		//	printk("in func: %s, set zigbee_3v3_en_gpio output to high", __func__);
			if(zigbee_3v3_en_gpio > 0)
				gpio_set_value(zigbee_3v3_en_gpio, 1);
		//	printk("-------  %s %d gpio_set_value(zigbee_3v3_en_gpio, 1) successed  ------- \n", __func__,__LINE__);
	} else if(zigbee_power_gpio_ctrl_status == 0){
		//	printk("in func: %s, set zigbee_3v3_en_gpio output to low", __func__);
			if(zigbee_3v3_en_gpio > 0)
				gpio_set_value(zigbee_3v3_en_gpio, 0);
		//	printk("-------  %s %d gpio_set_value(zigbee_3v3_en_gpio, 0) successed  ------- \n", __func__,__LINE__);
	}else
		printk("dsy invalid parameter,the zigbee_power_gpio_ctrl_status must be 1 or 0\n");

//	printk("in func: %s, gpio_get_value(zigbee_3v3_en_gpio) = %d", __func__, gpio_get_value(zigbee_3v3_en_gpio));
	return count;

}
 

 static ssize_t zigbee_rst_gpio_control_show(struct device *dev, struct device_attribute *attr, char *buf)
{

//	printk("moved in func: %s zigbee_rst_gpio_ctrl_status  = %d \n", __func__,zigbee_rst_gpio_ctrl_status);

	return snprintf(buf, ZIGBEE_PAGE_SIZE,"%d\n", zigbee_rst_gpio_ctrl_status);
}


static ssize_t zigbee_rst_gpio_control_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{


	int temp;

	temp = simple_strtol(buf, NULL, 10);//把字符串转为数字
	zigbee_rst_gpio_ctrl_status = temp;

//	printk("in func: %s, zigbee_rst_gpio_ctrl_status = %d", __func__, zigbee_rst_gpio_ctrl_status);
//	printk("in func: %s, count = %d", __func__, count);

	if(zigbee_rst_gpio_ctrl_status == 1) {
		//	printk("in func: %s, set zigbee_rst_gpio output to high", __func__);
			if(zigbee_rst_gpio > 0)
				gpio_set_value(zigbee_rst_gpio, 1);
		//	printk("-------  %s %d gpio_set_value(zigbee_rst_gpio, 1) successed  ------- \n", __func__,__LINE__);
	} else if(zigbee_rst_gpio_ctrl_status == 0){
		//	printk("in func: %s, set zigbee_rst_gpio output to low", __func__);
			if(zigbee_rst_gpio > 0)
				gpio_set_value(zigbee_rst_gpio, 0);
		//	printk("-------  %s %d gpio_set_value(zigbee_rst_gpio, 0) successed  ------- \n", __func__,__LINE__);
	}else
		printk("dsy invalid parameter,the zigbee_rst_gpio_ctrl_status must be 1 or 0\n");

//	printk("in func: %s, gpio_get_value(zigbee_rst_gpio) = %d", __func__, gpio_get_value(zigbee_rst_gpio));
	return count;

}
 




//定义设备属性节点zigbee_power_gpio_control zigbee_rst_gpio_control，和show函数，store函数
static DEVICE_ATTR(zigbee_power_gpio_control,     0664, zigbee_power_gpio_control_show, zigbee_power_gpio_control_store);
static DEVICE_ATTR(zigbee_rst_gpio_control,     0664, zigbee_rst_gpio_control_show, zigbee_rst_gpio_control_store);

static int zigbee_gpio_ctrl_sysfs_create(struct platform_device * pdev)
{
	int ret = 0;

//		printk("-------dsy:elink  %s %d start  ------- \n", __func__,__LINE__);
	//申请设备号--下面需要用的这个设备号
    ret = alloc_chrdev_region(&zigbee_devno, 0, 1, ZIGBEE_DEVNAME);
    if (ret) {//申请成功
        printk(" %s %d  alloc_chrdev_region fail: %d ~",__func__,__LINE__,ret);
        //goto torch_chrdev_error;   这里应该跳到unregister函数，懒得写
    } else {//申请失败
       printk(" %s %d  major: %d, minor: %d ~", __func__,__LINE__, MAJOR(zigbee_devno),
             MINOR(zigbee_devno));
    } 

    //在sys/class创建zigbee_class 类
    zigbee_class = class_create(THIS_MODULE, ZIGBEE_DEVNAME);
    if (IS_ERR(zigbee_class)) {//创建失败
        printk("%s %d   Unable to create class:zigbee_class\n", __func__,__LINE__);
    }

    //在sys/class/zigbee_class/下创建设备节点
    zigbee_device =device_create(zigbee_class, NULL, zigbee_devno, 
                                                  NULL, ZIGBEE_DEVNAME);
    if(NULL == zigbee_device)//创建失败
        printk("%s %d   device_create zigbee_device fail \n", __func__,__LINE__);

 //  printk(" %s %d  moved in function: device_create succed %s",__func__,__LINE__, __func__);
 	//在sys/class/zigbee_class/zigbee_class下创建属性文件led_one_control
	ret = device_create_file(zigbee_device, &dev_attr_zigbee_power_gpio_control);
	if (ret) {
		printk("in function: %s, create fs zigbee_power_gpio_control failed", __func__);
		return -1;
	}
//	printk("-------  %s %d create fs zigbee_power_gpio_control successed  ------- \n", __func__,__LINE__);
	ret = device_create_file(zigbee_device, &dev_attr_zigbee_rst_gpio_control);
	if (ret) {
		printk("in function: %s, create fs zigbee_rst_gpio_control failed", __func__);
		return -1;
	}
//	printk("-------  %s %d create fs zigbee_rst_gpio_control successed   ------- \n", __func__,__LINE__);
	return ret;
}


static int zigbee_bm023_probe(struct platform_device *pdev)
{
	int ret=0;
	struct device_node *node = NULL; 
	

	node = of_find_compatible_node(NULL, NULL, "mediatek,zigbee_bm023");
	if(!node){
		printk("%s find zigbee_bm023 node failed!!\n", __func__);
		return -EINVAL;		
	}
	printk("%s findzigbee_bm023 node successed!!\n", __func__);
	
	zigbee_3v3_en_gpio = of_get_named_gpio(node, "zigbee_3v3_en_gpio", 0);
    if ((!gpio_is_valid(zigbee_3v3_en_gpio)))
            return -EINVAL;

	zigbee_rst_gpio = of_get_named_gpio(node, "zigbee_rst_gpio", 0);
    if ((!gpio_is_valid(zigbee_rst_gpio)))
            return -EINVAL;	
	

	
	printk("zigbee_3v3_en_gpio %d\n", zigbee_3v3_en_gpio);
	printk("zigbee_rst_gpio %d\n", zigbee_rst_gpio);
	
	
	ret = gpio_request_one(zigbee_3v3_en_gpio, GPIOF_OUT_INIT_LOW, "zigbee_3v3_en_gpio");	
	gpio_direction_output(zigbee_3v3_en_gpio, 0);
	ret = gpio_request_one(zigbee_rst_gpio, GPIOF_OUT_INIT_LOW, "zigbee_rst_gpio");	
	 gpio_direction_output(zigbee_rst_gpio, 0);

	ret = zigbee_gpio_ctrl_sysfs_create(pdev);
	if(ret < 0) {
		printk("create sysfs failed.");
	}


//printk("-------%s %d  gpio_get_value(zigbee_3v3_en_gpio) = %d  gpio_get_value(zigbee_rst_gpio) = %d end-----\n", __func__,__LINE__,gpio_get_value(zigbee_3v3_en_gpio),gpio_get_value(zigbee_rst_gpio));
	

	return 0;
}

static int zigbee_bm023_remove(struct platform_device *pdev)
{
    return 0;
}


static struct platform_driver zigbee_bm023_driver = {
	.probe		= zigbee_bm023_probe,
	.remove		= zigbee_bm023_remove,
	.driver		= {
		.name	= ZIGBEE_DEVICE_NAME,
		.owner	= THIS_MODULE,
		.of_match_table = of_match_ptr(zigbee_bm023_match_table),
	},
};




static int __init zigbee_bm023_init(void)
{
    int err;



    err = platform_driver_register(&zigbee_bm023_driver);
    if(err)
    {
        printk(" failed to register driver\n");
        return -ENODEV;
    }
    return err;
}

static void __exit zigbee_bm023_exit(void)
{

    platform_driver_unregister(&zigbee_bm023_driver);
}

module_init(zigbee_bm023_init);
module_exit(zigbee_bm023_exit);  
  
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Test zigbee_bm023 Driver For zigbee_bm023");
MODULE_AUTHOR(");

3 为3.3v供电引脚和复位引脚两个节点赋予相关的权限，目的是让客户有权限直接操作这2个节点
3.1 赋予666权限
\device\mediatek\mt8167\init.mt8167.rc

    #added by dongshiyi for zigbee_bm023  start 20200507
    chmod 0666 /sys/devices/virtual/zigbee_bm023_by_elink/zigbee_bm023_by_elink/zigbee_power_gpio_control
    chown root system /sys/devices/virtual/zigbee_bm023_by_elink/zigbee_bm023_by_elink/zigbee_power_gpio_control

    chmod 0666 /sys/devices/virtual/zigbee_bm023_by_elink/zigbee_bm023_by_elink/zigbee_rst_gpio_control
    chown root system /sys/devices/virtual/zigbee_bm023_by_elink/zigbee_bm023_by_elink/zigbee_rst_gpio_control
    #added by dongshiyi for zigbee_bm023 end 20200507

3.2 增加相关的策略
\device\mediatek\mt8167\sepolicy\bsp\file_contexts

#added by dongshiyi for zigbee_bm023  start 20200507
/sys/devices/virtual/zigbee_bm023_by_elink/zigbee_bm023_by_elink/zigbee_power_gpio_control u:object_r:system_app_zigbee_bm023_by_elink_file:s0
/sys/devices/virtual/zigbee_bm023_by_elink/zigbee_bm023_by_elink/zigbee_rst_gpio_control u:object_r:system_app_zigbee_bm023_by_elink_file:s0
#added by dongshiyi for zigbee_bm023  end 20200507

\device\mediatek\mt8167\sepolicy\bsp\file.te

#added by dongshiyi for  zigbee_bm023 start 20200507
type system_app_zigbee_bm023_by_elink_file,fs_type,sysfs_type;
#added by dongshiyi for  zigbee_bm023 end 20200507

\device\mediatek\mt8167\sepolicy\basic\cameraserver.te

#added by dongshiyi for   zigbee_bm023 start 20200507
allow system_app system_app_zigbee_bm023_by_elink_file:file rw_file_perms;
#added by dongshiyi for  zigbee_bm023 end 20200507

备注：

3.3v供电引脚拉高：往3.3v供电引脚节点写1 如下：
 write("/sys/class/zigbee_bm023_by_elink/zigbee_bm023_by_elink/zigbee_power_gpio_control" , "1");
3.3v供电引脚拉低：往3.3v供电引脚节点写0 如下：
 write("/sys/class/zigbee_bm023_by_elink/zigbee_bm023_by_elink/zigbee_power_gpio_control" , "0");

复位引脚拉高：往3.3v供电引脚节点写0  如下：
  write("/sys/class/zigbee_bm023_by_elink/zigbee_bm023_by_elink/zigbee_rst_gpio_control" , "0");
复位引脚拉低：往3.3v供电引脚节点写1 如下：
  write("/sys/class/zigbee_bm023_by_elink/zigbee_bm023_by_elink/zigbee_rst_gpio_control" , "1");

上层app write方法参考：

  import java.io.File;
import java.io.FileWriter;

      private void write(String path , String content) {
        		FileWriter fw = null;
        		try {
        			File file = new File(path);
        			if (file.exists()) {
        				fw = new FileWriter(file, true);
        				fw.write(content);
        			}
        		} catch (Exception ex) {
        			Log.i("elink", "write error = "+ex.toString());
        		} finally {
        			try {
        				if (fw != null)
        					fw.close();
        			} catch (Exception ex) {
        			}
        		}
        	}

调试技巧

aiot8362am3_bsp:/sys/class/zigbee_bm023_by_elink/zigbee_bm023_by_elink #
cat zigbee_power_gpio_control
0

aiot8362am3_bsp:/sys/class/zigbee_bm023_by_elink/zigbee_bm023_by_elink #
zigbee_power_gpio_control  zigbee_rst_gpio_control
echo 1 > zigbee_power_gpio_control

aiot8362am3_bsp:/sys/class/zigbee_bm023_by_elink/zigbee_bm023_by_elink #
cat zigbee_power_gpio_control
1

zigbee_power_gpio_control  zigbee_rst_gpio_control
echo 1 > zigbee_rst_gpio_control

aiot8362am3_bsp:/sys/class/zigbee_bm023_by_elink/zigbee_bm023_by_elink #
cat zigbee_rst_gpio_control
1