BLK-MD-BC04-B 蓝牙模块使用

昨天无意找到了两个蓝牙模块,花了几个小时研究研究,虽然只有几个小时,可谓艰辛啊!因为,没资料,什么都没有,也不能确定硬件的好坏!

有6个pin,也不知道这pin是干什么用的!(VCC,GND,TXD,RXD,SET,3.3V)特别是哪个SET,搞不懂,我就瞎接;刚开始的时候,他发送过来都是一堆乱码,凭借我多年的经验,肯定是波特率设置不对;然后接收的数据总是断断续续的,很是郁闷;检查下硬件,发现很多地方都有脱焊的嫌疑;于是乎,就重新找来焊烙铁,把每个焊点都重新焊了一遍;这次终于有数据了,但是对他的命令集都不是很熟悉;于是随便在网上没有目的的搜索了一阵,找了个跟我的长的差不多的!瞬间像是找到了救命稻草;

还是凭借我多年的经验,先找HELP;发现一个AT+HELP指令,就二话没说输进去了,可是没反应啊!郁闷;这里让我想到了sms短信收发的AT指令;心想是不是少了个/r/n,我就在命令后面回车了一下;发送终于出来了;

Command              Description
-----------------------------------------------------------------
AT                   Check if the command terminal work normally
AT+RESET             Software reboot
AT+VERSION           Get firmware, bluetooth, HCI and LMP version
AT+HELP              List all the commands
AT+NAME              Get/Set local device name
AT+PIN               Get/Set pin code for pairing
AT+BAUD              Get/Set baud rate
AT+CLEAR             Remove the remembered remote address
AT+LADDR             Get local bluetooth address
AT+RNAME             Get remote device name
AT+DEFAULT           Restore factory default
AT+CMODE             Get/Set connection mode
AT+BIND              Get/Set bind bluetooth address
AT+COD               Get/Set local class of device
AT+IAC               Get/Set inquiry access code
AT+ROLE              Get/Set master or slave mode
AT+STATE             Get current state
AT+SENM              Get/Set security and encryption mode
AT+IPSCAN            Get/Set page and inquiry scan parameters
AT+SNIFF             Get/Set sniff power table parameters
AT+LOWPOWER          Start/Stop low power mode
AT+UARTMODE          Get/Set uart stop bits and parity
AT+ENABLEIND         Enable/Disable Indication print
AT+LSP               List Paired Device List
AT+RESETPDL          Reset Paired Device List
AT+REMOVEPDL         Remove one entry from Paired Device List
AT+SUPERVISION       Get/Set supervision timeout
AT+AUTOINQ           Start/Stop auto inquiry
AT+INQ               Start inquiry
AT+INQC              Cancel ongoing inquiry
(M)AT+AUTOCONN       Start/Stop auto connection
(M)AT+INQM           Get/Set inquiry parameters
(M)AT+CONNECT        Connect to a remote device by BD address
-----------------------------------------------------------------
Note: (M) = The command support master mode only, other commands
support both master and slave mode.
For more information, please visit http://www.bolutek.cn
Copyright@2012 www.bolutek.cn. All rights reserved.
大致看了下个别指令,测试了一下;其实我还是急于知道芯片资料,发现上面有个网址:http://www/bolutek.cn

就按照网址点进去找我的型号;才发现我的型号是BLK-MD-BC04-B

里面在网上找到了他的所有指令集;从头到尾大致看了下;

指令集下载的话,大家直接在百度里面搜BLK-MD-BC04-B-AT指令集,一大堆!!!

这是才知道,原来那个SET的作用是决定Beeth是Master Mode 还是 Slave Mode;

SET 接高电平为Master模式;

SET 悬空,及默认状态下,或者接地为Slave 模式;

特别注意:有些指令集只有Master mode才能使用:

(M)AT+AUTOCONN       Start/Stop auto connection
(M)AT+INQM           Get/Set inquiry parameters
(M)AT+CONNECT        Connect to a remote device by BD address
-----------------------------------------------------------------
Note: (M) = The command support master mode only, other commands
好了,我们测试一把:

*** BOLUTEK SPP Bluetooth Module V2.43 Init OK in SLAVE mode!***
*** Please input AT+HELP <cr><lf> to get commands list.      ***
*** For more information, please visit http://www.bolutek.cn ***

+READY
+PAIRABLE
+CONNECTING<<b0:ee:45:12:b1:38
+RNAME=Lenovo A789
+CONNECTED
呵呵呵呵你好啊!我发现你了!你好啊!我发现你了!+DISC:SUCCESS
+READY
+PAIRABLE
ERROR=117
ERROR=117
+COD=001f00,000000
ERROR=105
ERROR=105
+ROLE=0
+ROLE=1
OK
+STATE=3
OK
+LADDR=00:15:ff:f3:cc:c9
OK
LSP=0,b0:ee:45:12:b1:38,Lenovo A789
LSP=E
ERROR=305
ERROR=305
ERROR=302
+ROLE=1
如果大家不方便测试的话,把自己的手机打开,如果你是安卓的话,下载一个蓝牙调试助手,然后就可以了;

*** BOLUTEK SPP Bluetooth Module V2.43 Init OK in MASTER mode!***
*** Please input AT+HELP <cr><lf> to get commands list.      ***
*** For more information, please visit http://www.bolutek.cn ***

+READY
+INQS
+ROLE=1
ERROR=305
+INQE
+INQS
+INQ:b0:ee:45:12:b1:38,5a0204,-34
+CONNECTING>>b0:ee:45:12:b1:38
+INQE
+CONNECTED
+DISC:SUCCESS
+READY
+CONNECTING>>b0:ee:45:12:b1:38
+CONNECTION FAILED
+CONNECTING>>b0:ee:45:12:b1:38
+CONNECTION FAILED
+CONNECTING>>b0:ee:45:12:b1:38
+CONNECTION FAILED
这里已经at指令集的测试,其实想发送数据很简单;只要已经与其他蓝牙设备连接上去,那么就可以任意通信了;

通信就像给串口发送数据一样;串口的收发数据我想大家都知道,不必我多说吧??只要你发送的指令不给at指令集识别,他都会把他发送到接受方;



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