基于stm32的二维码识别源码程序（含详细注释），二维码硬解码，非常详细 -

/**
* @file main.c
* @author WB R&D Team - openmcu666
* @version V0.1
* @date 2016.08.24
* @brief Main Program body
*/
#include "stm32f4xx.h"
#include "Gpio.h"
#include "usart.h"
#include "delay.h"
#include "stm32f429i_lcd.h"
#include "ov7670.h"
#include "ov2640.h"
#include "ov5642.h"
#include "mt9d111.h"
#include "CamConfig.h"
#include "sccb_bus.h"
#include "RTC.h"
#include "string.h"
#include "QR_Decoder.h"
//only for OV5642
/*****************************************************************************
** Main Function main()
******************************************************************************/
int main(void)
{
uint16_t temper;
char qr_type_len=0;
short qr_data_len=0;
char qr_type_buf[10];
char qr_data_buf[512];
int addr=0;
int i=0,j=0;
char qr_num=0;
USART1_Init();
//LED_Init();
Key_Init();
BEEP_Init();
printf("\r\n");
printf("Hello Welcome.\r\n");
printf("Thank You For Choosing Our Products.\r\n");
printf("Thank You Very Much.\r\n");
printf("This Example Camera.\r\n");
printf("\r\n");
printf("DCMI Initialization...\r\n");
LCD_Init();
LCD_LayerInit();
LTDC_Cmd(ENABLE);
LCD_SetLayer(LCD_BACKGROUND_LAYER);
LCD_SetTransparency(0xFF);
LCD_Clear(BLACK);
LCD_SetLayer(LCD_FOREGROUND_LAYER); //使用前景层
LCD_SetTransparency(0xFF); //设置透明度
LCD_Clear_ARGB8888(0x40000000);
LCD_SetTextColor_ARGB8888(0xFFFFFFFF);
LCD_DrawFullRect_ARGB8888(Frame_Width,Frame_Width); //绘制透明框
LCD_DrawBox_ARGB8888(Frame_Width,Frame_Line_Length,Frame_Line_Size,0xD05CBDE7); //绘制扫描框
printf("Ok,Let's Go...\r\n");
temper = ov7670_check(); //Camera是否为OV7670
if (temper == 0x7673)
{
printf("Cam ID : [0x%02x]\r\n",temper);
if (ov7670_init())
{
printf("Init OV7670 reg Fail...\r\n");
while (1)
{
}
}
else
{
printf("Init OV7670 reg OK...\r\n");
printf("Show Camer Data...\r\n");
}
}
else
{
temper=ov2640_check();
if(temper==0x2642) //OV2640
{
if (ov2640_init())
{
printf("Init OV2640 reg Fail...\r\n");
while (1)
{}
}
else
{
printf("Cam ID : [0x%02x]\r\n",temper);
printf("Init OV2640 reg OK...\r\n");
printf("Show Camer Data...\r\n");
}
}
else //ov5642 or mt9d111
{
temper=ov5642_check();
printf("Cam ID : [0x%02x]\r\n",temper);
if (temper==0x5642)//mt9d111_init
{
ov5642_init();
printf("Init ov5642 reg OK...\r\n");
printf("Show Camer Data...\r\n");
}
else
{
printf("Init ov5642 reg Fail...\r\n");
while (1){}
}
}
}
// if(RTC_Config()) //初始化RTC
// {
// printf("\r\nLSE start failed\r\n");
// }
// RTC_Set_WakeUp(RTC_WakeUpClock_CK_SPRE_16bits,0); //配置WAKE UP中断,1秒钟中断一次,用于统计帧率
systick_delay_ms(100);
ov5642_auto_focus();
cam_start();
while (1)
{
qr_num = QR_decoder();
if(qr_num)
{
GPIO_SetBits(BEEP_GPIO_PORT,BEEP_GPIO_PIN);
systick_delay_ms(100);
GPIO_ResetBits(BEEP_GPIO_PORT,BEEP_GPIO_PIN);
//解码的数据是按照识别条码的个数封装好的二维数组,这些数据需要
//根据识别条码的个数，按组解包并通过串口发送到上位机串口终端
for(i=0;i < qr_num;i++)
{
qr_type_len = decoded_buf[i][addr++];//获取解码类型长度
for(j=0;j < qr_type_len;j++)
qr_type_buf[j]=decoded_buf[i][addr++];//解码类型
qr_data_len = decoded_buf[i][addr++]<<8; //解码数据的高8位
qr_data_len |= decoded_buf[i][addr++]; //解码数据的低8位
for(j=0;j < qr_data_len;j++)
qr_data_buf[j]=decoded_buf[i][addr++];//获取解码数据
USART1_Send_Data((unsigned char *)qr_type_buf, qr_type_len);//串口发送解码类型
USART1_Send_Data((unsigned char *)":", 1);
USART1_Send_Data((unsigned char *)qr_data_buf, qr_data_len);//串口发送解码数据
USART1_Send_Data((unsigned char *)"\r\n", 2);
addr =0;
}
}
}
}

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