STM32 F401 and HC-06

szfrydrych · ‎2016-09-10

Posted on September 10, 2016 at 20:33

Hi!

I have problem with connection between my mobile phone and my Nucleo board by Bluetooth. How You see in subject I have a HC-06 and I can't connect with my mobile phone. When I try to do the same with my PC everything was good (I use USART2) and now isn't. I have not idea what's wrong. You see i try by USART1, USART2 without results.

It is my code. If you have any suggestions I will be grateful

&sharpinclude ''stm32f4xx.h''

&sharpinclude <stdio.h>

void delay(int czas)

{

int i=0;

for(i=0; i<czas*2000; i++);

}

//Ustawienie dla diody LED na p?ytce Nucleo

void GPIOA_LED_init(void)

{

RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);

GPIO_InitTypeDef gpio;

gpio.GPIO_Pin = GPIO_Pin_5;

gpio.GPIO_Mode = GPIO_Mode_OUT;

gpio.GPIO_OType = GPIO_OType_PP;

gpio.GPIO_PuPd = GPIO_PuPd_NOPULL;

gpio.GPIO_Speed = GPIO_Speed_100MHz;

GPIO_Init(GPIOA, &gpio);

}

//Ustawienie USART1

void USART2_init(void)

{

RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);

RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA|RCC_AHB1Periph_GPIOB, ENABLE);

GPIO_InitTypeDef gpio;

//PIN2 to TX

gpio.GPIO_Pin = GPIO_Pin_6;

gpio.GPIO_Mode = GPIO_Mode_AF;

gpio.GPIO_OType = GPIO_OType_PP;

gpio.GPIO_PuPd = GPIO_PuPd_NOPULL;

//gpio.GPIO_Speed = GPIO_Speed_100MHz;

GPIO_Init(GPIOB, &gpio);

GPIO_PinAFConfig(GPIOB, GPIO_PinSource6, GPIO_AF_USART1);

//PIN3 to RX

gpio.GPIO_Pin = GPIO_Pin_10;

gpio.GPIO_Mode = GPIO_Mode_AF;

gpio.GPIO_OType = GPIO_OType_OD;

gpio.GPIO_PuPd = GPIO_PuPd_UP;

// gpio.GPIO_Speed = GPIO_Speed_100MHz;

GPIO_Init(GPIOA, &gpio);

GPIO_PinAFConfig(GPIOA, GPIO_PinSource10, GPIO_AF_USART1);

USART_InitTypeDef usart;

//Konfiguracja usarta

usart.USART_BaudRate = 9600;

usart.USART_HardwareFlowControl = USART_HardwareFlowControl_None;

usart.USART_Mode = USART_Mode_Rx|USART_Mode_Tx;

usart.USART_Parity = USART_Parity_No;

usart.USART_StopBits = USART_StopBits_1;

usart.USART_WordLength = USART_WordLength_8b;

USART_Init(USART1, &usart);

USART_Cmd(USART1, ENABLE);

}

//Wysy?anie znaku przez UART2

void USART2_send_char( uint8_t znak)

{

while( USART_GetFlagStatus(USART1, USART_FLAG_TXE)==RESET ); //jesli bufor pusty

USART_SendData(USART1, znak);

}

int __io_putchar(int c)

{

USART2_send_char(c);

return c;

}

int main(void)

{

GPIOA_LED_init();

// GPIOC_BUTTON_init();

USART2_init();

for(;;)

{

if (USART_GetFlagStatus(USART1, USART_FLAG_RXNE)) {

char c = USART_ReceiveData(USART2);

switch (c)

{

case 'a':

GPIO_SetBits(GPIOA, GPIO_Pin_5); // zapalenie diody

printf(''connection'');

// delay(100);

break;

case 'b':

GPIO_ResetBits(GPIOA, GPIO_Pin_5); // zgaszenie diody

// delay(400);

break;

default:

//GPIO_SetBits(GPIOA, GPIO_Pin_5);

break;

}

}//for

}//main

#eclipse #nucleo #stm32