Bi directional anti control Bluetooth scheme for mobile phone screen of vehicle

 

This application agreement is developed by the company based on the BC5MM Bluetooth module+Apple MFI certified chip, specifically for car audio. With Android and Apple's MHL or HDMI mobile phone screen synchronization, the mobile phone screen and car screen synchronization interaction function is realized. It includes A2DP (music playing), AVRCP (streaming media control and music cover transmission), HFP (handsfree call), SPP (data transmission), PBAPC (phone book synchronization), HID (mouse), IAP (data transmission of IOS system) and other protocols.

 

The VREG on the module is powered on at a high level and powered off at a low level. After the VREG is powered on, the nearest connected mobile phone is automatically connected. When using for the first time, you can send a command to let the module enter the pairing mode, and then find the Bluetooth device from the mobile phone (the default device name of the module is "BC5MP"). After finding the device, you can select the connection. The mobile phone will prompt you to enter the pairing password (the default password of the module is "0000", and the mobile phone of Blue Tooth 2.1 or above does not need to enter a password). After entering the correct pairing password, the mobile phone will establish a connection with the module, At this time, the mobile phone can play music, download the phone book and make calls through the car stereo (the module includes the latest CVC echo cancellation function of CSR). The module uses UART interface to communicate with MCU, which is realized through train machine MCU

 

The control and data communication of the Bluetooth module are combined with the mobile phone APP provided by our company to obtain the mobile phone resolution and horizontal and vertical screen status, so as to achieve coordinate synchronization and ensure the accuracy of the touch function.