plus.bluetooth.writeBLECharacteristicValue 佳博 1324d热敏打印机执行后不打印

分类：5+ SDK

// 写入低功耗蓝牙设备的特征值  
    function writeCharacteristics() {  
                plus.bluetooth.writeBLECharacteristicValue({  
                    deviceId: deviceId, //必选 蓝牙设备的id  
                    serviceId: serviceId, //必选 蓝牙服务的uuid  
                    characteristicId: characteristicId, //选必蓝牙特征值的UUID    
                    value: stringToByte(value), //必选要写入的数据   
                    success: function(e) {  
                        console.log('write characteristics success: ' + JSON.stringify(e));  
                    },  
                    fail: function(e) {  
                        console.log('write characteristics failed: ' + JSON.stringify(e));  
                    }  
    });  
}

执行返回

 write characteristics success: {"code":0,"message":"ok"}

但是打印机没有反应
已测试使用wx小程序可以打印

    // 打印字符串  
    owner.PrintString = function(string) {  
        var bytes = plus.android.invoke(string, 'getBytes', 'gbk');  
        owner.OutputStream.write(bytes);  
    };

使用 outputStream.write方式也是同样效果
uuid :49535343-fe7d-4ae5-8fa9-9fafd205e455
characteristicId:
{"uuid":"49535343-1e4d-4bd9-ba61-23c647249616","properties":{"read":false,"write":false,"notify":true,"indicate":false}} at js/common.js:140
{"uuid":"49535343-8841-43f4-a8d4-ecbe34729bb3","properties":{"read":false,"write":true,"notify":false,"indicate":false}} at js/common.js:140
{"uuid":"49535343-aca3-481c-91ec-d85e28a60318","properties":{"read":false,"write":true,"notify":true,"indicate":false}} at js/common.js:140
{"uuid":"49535343-6daa-4d02-abf6-19569aca69fe","properties":{"read":true,"write":true,"notify":false,"indicate":false}} at js/common.js:140

tanyi (作者)

我知道原因了，不是代码问题，是这个打印机必须要带指令才可以打印。现在发现打印不了图片。需要output一个二进制，但是js不能用二进制流

2019-01-17 09:14
lgsh10086

能否分享一下代码？

2019-03-01 15:19

糖糖男儿

//outputStream.write([0x1B,0x45,0x01]); //加粗打印字体

//outputStream.write([0x1B,0x45,0x00]); //取消加粗打印字体

//outputStream.write([0x1B,0x61,0x00]); // 选择对齐方式居左对齐

//outputStream.write([0x1B,0x61,0x01]); // 选择对齐方式居中对齐

//outputStream.write([0x1B,0x61,0x02]); // 选择对齐方式居右对齐

//outputStream.write([0x1d,0x21,0x11]); // 宽高加倍

//outputStream.write([0x1d,0x21,0x10]); // 宽加倍

//outputStream.write([0x1d,0x21,0x01]); // 高加倍

//outputStream.write([0x1d,0x21,0x00]); // 取消字体放大

//outputStream.write([0x1b,0x33,32]); // 默认行间距32

2019-09-20 16:26

plus.bluetooth.writeBLECharacteristicValue 佳博 1324d热敏打印机执行后不打印

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plus.bluetooth.writeBLECharacteristicValue 佳博 1324d热敏打印机执行后不打印