//轮询蓝牙模块所有可能的波特率，获取当前波特率
//并且配置其波特率为115200，
u32 BT_Scan_Buad(void)
{
//蓝牙波特率率表，将9600（默认波特率）和230400（hm-06遗留bug）放到最前
//115200（将要配置的波特率）放到最后
static u32 bandsel[9] = {230400,9600,1200,2400,4800,19200,38400,57600,115200};
u8 i;
for(i=0; i<9; i++) {
UART1_init(SysClock,bandsel[i]);
Uart1SendaBTCmd(ATcmdAsk);
if(CmdJudgement(ATcmdAnswer) == true) {
Q_printf("BT Scan %d\r\n", bandsel[i]);
return bandsel[i];
}
}
return 0;
}
/********************************************
写蓝牙参数函数 (Write Bluetooth function parameters)
********************************************/
void BT_ATcmdWrite(void)
{
static u32 BT_CurBaud;
BT_CurBaud = BT_CurBaud_Get();
if((BT_CurBaud == BT_BAUD_Set)) BTstate = BThavewrote;//检测到蓝牙当前的波特率和设定值不同，就写入设定值 //Bluetooth current baud rate detection and setting values are different, the set value is written
else BTstate = BTneedwrite;
if(BTstate == BTneedwrite)
{
LedA_off;LedB_off;LedC_off;LedD_off;
UART1_init(SysClock,BT_CurBaud);//以当前波特率重新初始化串口 //In the current re-initialize the serial port baud rate
/*开始配置蓝牙设备名,pin码，波特率*/ //Begin configuring the Bluetooth device name, pin code, baud rate
Uart1SendaBTCmd(ATcmdAsk);
//printf("\r\n与蓝牙通信中...\r\n"); //Bluetooth Communication
if(CmdJudgement(ATcmdAnswer) == true)//有蓝牙返回，才往下写指令 //Bluetooth returned, only to write down instructions
{
Uart1SendaBTCmd(ATcmdNameAsk);
if(CmdJudgement(ATcmdNameAnswer) == false) {Uart1SendaBTCmd(ATcmdNameSet);LedA_off;LedB_on;LedC_off;LedD_on; }
else ;
Uart1SendaBTCmd(ATcmdCodeAsk);
if(CmdJudgement(ATcmdCodeAnswer) == false) {Uart1SendaBTCmd(ATcmdCodeSet); LedA_on;LedB_off;LedC_on;LedD_off; }
else ;
Uart1SendaBTCmd(ATcmdBaudAsk);
if(CmdJudgement(ATcmdBaudAnswer) == false) {
Uart1SendaBTCmd(ATcmdBaudSet);
LedA_off;LedB_on;LedC_off;LedD_on;
BTstate = BThavewrote;
SaveParamsToEEPROM();
LedA_on;LedB_on;LedC_on;LedD_on;
delay_ms(1000);
LedA_off;LedB_off;LedC_off;LedD_off;
}//最后修改波特率,并写入EEPROM //Last Modified baud rate, and write EEPROM
else BTstate = BTneedwrite;
}
else {BTstate = BTneedwrite; printf("\r\n与蓝牙通信失败\r\n");} //Bluetooth communication and failure
}
else ;
UART1_init(SysClock,BT_BAUD_Set);
}
u32 BT_CurBaud_Get(void)
{
static u32 bandsel[8] = {1200,2400,4800,9600,19200,38400,57600,115200};//蓝牙波特率率表
u8 i;
BT_on(); //开蓝牙 //Open Bluetooth
delay_ms(500); //等待蓝牙稳定 //Wait Bluetooth stable
/**确定当前蓝牙波特率**/ //Bluetooth determine the current baud rate
for(i=0;i<8;i++)
{
UART1_init(SysClock,bandsel[i]);
Uart1SendaBTCmd(ATcmdAsk);
if(CmdJudgement(ATcmdAnswer) == true)
{
//printf("\r\nHM-06 baud -->%d\r\n",bandsel[i]);
break;//得到当前波特率为Bandsel[i] //Get the current baud rate Bandsel[i]
}
}
return bandsel[i];
}
/********************************************
写蓝牙参数函数
********************************************/
void BT_ATcmdWrite(void)
{
u8 i;
static u32 BT_CurBaud;
static u32 bandsel[9] = {230400,9600,1200,2400,4800,19200,38400,57600,115200};
Uart1SendaBTCmd(ATcmdAsk);
if(CmdJudgement(ATcmdAnswer) == true) {
//HM-11模块已经是115200波特率，无需配置
return ;
}
Q_printf("BT baund check and init begin. Q_printf is useless.\r\n\r\n");
BT_CurBaud = BT_Scan_Buad();
if (BT_CurBaud == 0) {
Q_printf("BT scan buad failed!\r\n");
goto quit;
}
//首先检测蓝牙模块的串口是否已经配置为115200
if(BT_CurBaud != BT_BAUD_Set) {
//蓝牙模块需要修改其名字，波特率
//修改蓝牙的名字为Crazepony
Uart1SendaBTCmd(ATcmdNameSet);
//修改蓝牙波特率为115200
Uart1SendaBTCmd(ATcmdBaudSet);
//LED闪烁表示原来蓝牙模块是哪个波特率
for(i=0; i<9; i++) {
LedA_on;
LedB_on;
LedC_on;
LedD_on;
delay_ms(1000);
LedA_off;
LedB_off;
LedC_off;
LedD_off;
delay_ms(1000);
if(BT_CurBaud == bandsel[i]) {
break;
}
}
} else {
//已经是115200，可以直接通信
Q_printf("BT module baud is 115200 okay\r\n");
}
quit:
//最终STM32的UART波特率设置回115200
UART1_init(SysClock, BT_BAUD_Set);
Q_printf("\r\nBT baund check and init end.\r\n");
}