Hi Baozhu
Used HM-BT4502, i can connect with Android phone through “Serial Bluetooth Terminal”( I think every one use it to test Bluetooth). When I wrote App to connect with HM-BT4502, i used base code of Mr Kai-morich. I think he did “Serial Bluetooth Terminal”. the App link below.
(https://github.com/kai-morich/SimpleBluetoothTerminal/commits?author=kai-morich) some warning fixes
Problem is that i could not connect BT4502 with my Andrdoid phone thought new APP. After i debuged i saw “BLUETOOTH_LE_TIO_CHAR_TX_CREDITS” is not correct. (at SerialSocket, line 58-59), i tried to modify this number (i modified with number i received thought “Serial Bluetooth Terminal”), but was not successed. TX_CREDITS called by Mr Kai-morich, i dont understand what is this,How can i get that number.
I know it long text, and bother you much, but can you check this App ?
If you know some Open source APP can connect with HM-BT4502 , please tell me.
Thanks so much for your kindness.