Tutorial: Bluetooth

Bluetooth (HC-06)

HC-06

Procedure

1. Connect the bluetooth module(HC-06) and the MCU.

For using USART1, select PA9(TX) and PA10(RX).

• BT(TX) - PA10(RX)

• BT(RX)- PA9(TX)

Connection

2. Search and add the bluetooth named "HC-06(n)". (n = 01, 02, ... )

image

3. Enter the password "1234".

password

4. If it's connected normally, you can connect the serial port with Teraterm.

Serial Port

Sample Code

• Assumes you have ecUART2.h

#include "ecSTM32F4v2.h"
// this should include #include "ecUART2.h" 
//#include "ecUART2.h" 

static volatile uint8_t PC_Data = 0;
static volatile uint8_t BT_Data = 0;
uint8_t PC_string[]="Hi_BT\r\n";

void setup(void){
	RCC_PLL_init();
	SysTick_init();
	
	// USART1: BT serial init 
	UART1_init();
	UART1_baud(BAUD_9600);
}

int main(void){	
	setup();
	//printf("MCU Initialized\r\n");	
	while(1){
		// USART Receive: Use Interrupt only
		// USART Transmit:  Interrupt or Polling
		USART1_write(PC_string, 7);
		delay_ms(2000);        
	}
}