[the fourth day of actual combat of stm32f401ret6 smart lock project in 10 days] voice control is realized by externally interrupted keys

One 、 Realize voice function

1、 Voice module information

The first thing we need to do is to understand how the voice module is used , Then you need to find the data manual of the voice module , Here are the parameters of the voice module

2、 Code implementation

STM32F401RET6 Interface with voice module

After reading the above materials, we can follow the data manual and STM32F401RET6 With the schematic diagram of the voice module to complete our code

Let's write our code , How the specific project is established , Not here , No, you can go back to the front and have a look , Let's go straight to the code
voice.c Code

#include "voice.h"
#include "delay.h"


void Voice_Config(void)
{
    	
	GPIO_InitTypeDef GPIO_InitStruct;// Declare struct variables 
	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE);// open GPIOC The clock of 
	// initialization PB8 and PB9
	GPIO_InitStruct.GPIO_Mode = GPIO_Mode_OUT;// General output 
	GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;// Push pull output 
	GPIO_InitStruct.GPIO_Pin = GPIO_Pin_5;// The first 5 Pin No 
	GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;// No up and down 
	GPIO_InitStruct.GPIO_Speed = GPIO_Fast_Speed;// Speed 50Mhz
	GPIO_Init(GPIOC, &GPIO_InitStruct);
	
	
	GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IN;// Universal input 
	GPIO_InitStruct.GPIO_Pin = GPIO_Pin_4;// The first 4 Pin No 
	
	GPIO_Init(GPIOC, &GPIO_InitStruct);
	
	
}

void Data_H(void)
{
    
	
	Voice_Data_H;
	Delay_us(1500);
	Voice_Data_L;
	Delay_us(500);
}

void Data_L(void)
{
    
	Voice_Data_H;
	Delay_us(500);
	Voice_Data_L;
	Delay_us(1500);
}

void Voice_SendData(u8 data)
{
    
	u8 i;
	Voice_Data_H;
	Delay_ms(8);
	Voice_Data_L;
	Delay_ms(1);
	
	for(i = 0;i < 8;i++)
	{
    
		if(data & (0x80 >> i))
		{
    
			Data_H();
		}
		else
		{
    
			Data_L();
		}
	}
	
	
	
}

voice.h Code , It contains a bit band operation header file and a delay header file

#ifndef _VOICE_H
#define _VOICE_H


#include "stm32f4xx.h"
#include "delay.h"
#include "io_bit.h"


#define Voice_Data_H PCout(5) = 1
#define Voice_Data_L PCout(5) = 0

#define Voice_BUSY PCin(4) 



void Voice_Config(void);
void Voice_SendData(u8 data);


#endif

main.h Also include voice.h

#ifndef _MAIN_H
#define _MAIN_H

#include "stm32f4xx.h"
#include "stdio.h"
#include "led.h"
#include "delay.h"
#include "key.h"
#include "usart.h"
#include "voice.h"
#include "systick.h"
#include "exit.h"





#endif

main.c Code for

#include "main.h"
int main()
{
    
	Voice_Config();
	

	Delay_ms(500);
	Voice_SendData(0x18);
	Delay_ms(100);
	while(Voice_BUSY);	
	while(1);
		
}

In this way, the voice module can sound , Now let's use external interrupts and buttons to realize voice control

Two 、 External interrupt keys realize voice control

The code of the voice module remains unchanged , We add the external interrupt code and change the code of the main program
exit.h Code

#ifndef _EXIT_H
#define _EXIT_H

#include "stm32f4xx.h"

void Exit_Config(void);




#endif

exit.c Code

#include "exit.h"
#include "voice.h"
#include "led.h"
void Exit_Config(void)
{
    
	
	EXTI_InitTypeDef exit_InitTypeDef;
	NVIC_InitTypeDef nvic_InitTypeDef;
	
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG,ENABLE);
	SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOC,EXTI_PinSource13);
	
	exit_InitTypeDef.EXTI_Line = EXTI_Line13;
	exit_InitTypeDef.EXTI_Trigger = EXTI_Trigger_Falling;
	exit_InitTypeDef.EXTI_Mode = EXTI_Mode_Interrupt;
	exit_InitTypeDef.EXTI_LineCmd = ENABLE;
	EXTI_Init(&exit_InitTypeDef);
	
	nvic_InitTypeDef.NVIC_IRQChannel=EXTI15_10_IRQn; 
	nvic_InitTypeDef.NVIC_IRQChannelCmd=ENABLE;
	nvic_InitTypeDef.NVIC_IRQChannelPreemptionPriority=2;
	nvic_InitTypeDef.NVIC_IRQChannelSubPriority=1;
	NVIC_Init(&nvic_InitTypeDef);
	
}


// External interrupt 
void EXTI15_10_IRQHandler(void)
{
    
	if(EXTI_GetITStatus(EXTI_Line13) != RESET)
	{
    
		LED1 = 0;  
		Delay_ms(500);
		Voice_SendData(0x18);
		Delay_ms(100);
		while(Voice_BUSY);
	}
	EXTI_ClearITPendingBit(EXTI_Line13);
}

main.h Include voice.h and exit.h

#ifndef _MAIN_H
#define _MAIN_H

#include "stm32f4xx.h"
#include "stdio.h"
#include "led.h"
#include "delay.h"
#include "key.h"
#include "usart.h"
#include "voice.h"
#include "systick.h"
#include "exit.h"





#endif

main.c Code

#include "main.h"



int main()
{
    
	Led_Config();//LED initialization 
	Voice_Config();
	Exit_Config();
	Key_Init();// Key initialization 
while(1)
{
    
}
		
}

In this way, we use external interrupt buttons to realize voice control
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