DIY个人智能家庭网关——硬件篇之433M无线接收解码器（二）

为了降低DIY难度，我提供了方案二：采用现成的模块来搭建解码器，需要如下模块

1、STM8S103F单片机模块和编程器

2、433M无线接收模块

3、PL2303 USB转串口模块

或带线的

另外还需要一些杜邦线用来连接这些模块，这些东西都可以在淘宝上买得到。

STM8S103F代码如下

/**  ******************************************************************************  * @file    PRoject/main.c   * @author  MCD application Team  * @version V2.1.0  * @date    18-November-2011  * @brief   Main program body  ******************************************************************************  * @attention  *  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.  *  * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>  ******************************************************************************  */ /* Includes ------------------------------------------------------------------*/#include <stdio.h>#include <string.h>#include "stm8s.h"#include "stm8s_exti.h"#include "stm8s_it.h"#include "stm8s_gpio.h"#include "stm8s_tim2.h"#include "stm8s_tim4.h"#include "stm8s_uart1.h"/* Private defines -----------------------------------------------------------*//* Private function prototypes -----------------------------------------------*//* Private functions ---------------------------------------------------------*/#define LED_GPIO_PORT  (GPIOB)#define LED_GPIO_PINS  (GPIO_PIN_5)#define PULS_LEVEL_HIGH		(1)#define PULS_LEVEL_LOW		(0)#define DEBUG                   (1)#define USER_CODE_NUMBER_MAX    (10)#define USER_CODE_INFO_MAGIC    (0x12345678)#define LED_ON        GPIO_WriteLow(GPIOB, GPIO_PIN_5)#define LED_OFF       GPIO_WriteHigh(GPIOB, GPIO_PIN_5)#define LED_REVERSE   GPIO_WriteReverse(GPIOB, GPIO_PIN_5)u32 code_addr;u32 code = 0;u32 puls_high = 0;u32 puls_low = 0;u8 current_puls_level=PULS_LEVEL_LOW;u8 check_flag = 0;u8 found_flag = 0;s32 value = 0;u32 last_code = 0;u32 last_valid_code = 0;u32 puls_width_compare = 0;u8 bit_count = 0;u8 learn_flag = 0;u32 learn_led_count = 0;u32 timeout_count = 0;u32 time_count = 0;u32 puls_high_time = 0;u32 puls_low_time = 0;u32 button_down_count = 0;struct user_code_info{    u32   magic;    u8    number;        u16    code[USER_CODE_NUMBER_MAX];};struct user_code_info user_info;/* Private defines -----------------------------------------------------------*//* Private function prototypes -----------------------------------------------*//* Private functions ---------------------------------------------------------*/void Init_GPIO(void){    // led, PB5    GPIO_Init(GPIOB, GPIO_PIN_5, GPIO_MODE_OUT_PP_LOW_FAST);    LED_OFF;        // 433M signal input, PC3, pull up, interrupt    GPIO_Init(GPIOC, GPIO_PIN_3, GPIO_MODE_IN_FL_IT);    EXTI_DeInit();    EXTI_SetExtIntSensitivity(EXTI_PORT_GPIOC, EXTI_SENSITIVITY_RISE_FALL);//falling and rising        // button    GPIO_Init(GPIOC, GPIO_PIN_4, GPIO_MODE_IN_PU_NO_IT);        // ouput gpio    GPIO_Init(GPIOC, GPIO_PIN_5, GPIO_MODE_OUT_PP_LOW_FAST);    GPIO_WriteLow(GPIOC, GPIO_PIN_5);    GPIO_Init(GPIOC, GPIO_PIN_6, GPIO_MODE_OUT_PP_LOW_FAST);    GPIO_WriteLow(GPIOC, GPIO_PIN_6);    GPIO_Init(GPIOC, GPIO_PIN_7, GPIO_MODE_OUT_PP_LOW_FAST);    GPIO_WriteLow(GPIOC, GPIO_PIN_7);    GPIO_Init(GPIOD, GPIO_PIN_2, GPIO_MODE_OUT_PP_LOW_FAST);    GPIO_WriteLow(GPIOD, GPIO_PIN_2);    }void Init_Timer4(void){    TIM4_ARRPreloadConfig(ENABLE);    TIM4_TimeBaseInit(TIM4_PRESCALER_8, 0xff);//    TIM4_ClearFlag(TIM4_FLAG_UPDATE);    TIM4_ITConfig(TIM4_IT_UPDATE, ENABLE);    //TIM4_Cmd(ENABLE);}void Init_Timer2(void){  TIM2_DeInit();  TIM2_TimeBaseInit(TIM2_PRESCALER_64,0xFFFF);  TIM2_ITConfig(TIM2_IT_UPDATE , ENABLE);  TIM2_SetCounter(0);   TIM2_Cmd(ENABLE);}void Init_Clk(void){  CLK_DeInit();  CLK_HSICmd(ENABLE);  CLK_HSiprescalerConfig(CLK_PRESCALER_HSIDIV2);  Init_Timer2();}#if DEBUGvoid Init_UART1(void){    UART1_DeInit();    UART1_Init((u32)9600, UART1_WordLENGTH_8D, UART1_STOPBITS_1, UART1_PARITY_NO, UART1_SYNCMODE_CLOCK_DISABLE, UART1_MODE_TX_ENABLE);    UART1_Cmd(ENABLE);}void UART1_Send(uint8_t dat){    while(( UART1_GetFlagStatus(UART1_FLAG_TXE)==RESET));    UART1_SendData8(dat);}int putchar(int c)  {      UART1_Send((u8)c);    return (c);  }#endifvoid delay_ms(u32 t){  u32 i;  for(;t>0;t--)    for(i=0xFF;i>0;i--);}void Init_EEPROM(void){ Flash_DeInit(); FLASH_Unlock(FLASH_MEMTYPE_DATA); FLASH_SetProgrammingTime(FLASH_PROGRAMTIME_STANDARD);}void read_user_code_info(struct user_code_info *info){  u32 addr = FLASH_DATA_START_PHYSICAL_ADDRESS;  u8 i;  u8 *p = (u8 *)info;    for(i =0;i<sizeof(struct user_code_info);i++)  {    *p = FLASH_ReadByte(addr+i);    p++;  }}void write_user_code_info(struct user_code_info *info){  u32 addr = FLASH_DATA_START_PHYSICAL_ADDRESS;  u8 i;  u8 *p = (u8 *)info;    for(i =0;i<sizeof(struct user_code_info);i++)  {    FLASH_ProgramByte(addr+i, *p);    p++;  }}void dump_user_code_info(struct user_code_info *info){  u8 i;    printf("magic:0x%lx/r/n", info->magic);  printf("number:%d/r/n", info->number);    for(i=0;i<info->number;i++)  {    printf("code[%d]:0x%04x/r/n", i, info->code[i]);  } }void save_new_code(struct user_code_info *info, u16 code){    u8 i;        for(i = 0;i<info->number;i++)    {      if(info->code[i] == code)        return;    }        if(info->number < USER_CODE_NUMBER_MAX)    {      info->code[info->number] = code;      info->number++;    }    else    {        for(i=1;i<USER_CODE_NUMBER_MAX;i++)        {          info->code[i-1] = info->code[i];        }                info->code[USER_CODE_NUMBER_MAX-1] = code;    }        write_user_code_info(&user_info);     dump_user_code_info(&user_info);    }void my_job(u8 channel){  switch(channel)  {  case 1:GPIO_WriteReverse(GPIOC, GPIO_PIN_5);break;  case 2:GPIO_WriteReverse(GPIOC, GPIO_PIN_6);break;  case 3:GPIO_WriteReverse(GPIOC, GPIO_PIN_7);break;  case 4:GPIO_WriteReverse(GPIOD, GPIO_PIN_2);break;  default:break;  }}#if 0void handle_code(u32 code){    u16 addr = code >> 8;    u8 data = code & 0xFF;    s8 channel = -1;        // PT6624 chip    if(data == 0xC0 || data == 0x30 || data == 0x0C || data == 0x03)    {      switch(data)      {      case 0xC0:channel = 1;break;      case 0x30:channel = 2;break;      case 0x0C:channel = 3;break;      case 0x03:channel = 4;break;      default: break;            }    }    else // other chip    {      switch(data&0x0F)      {      case 0x08:channel = 1;break;      case 0x04:channel = 2;break;      case 0x02:channel = 3;break;      case 0x01:channel = 4;break;      default: break;                }    }        if(learn_flag)    {        save_new_code(&user_info, addr);        learn_flag = 0;    }    else    {        u8 i;        if(user_info.number==0)        {          return;        }        else        {          for(i = 0;i < user_info.number;i++)          {            if(user_info.code[i] == addr)            {              my_job(channel);                            LED_ON;              delay_ms(100);              LED_OFF;              delay_ms(300);                          }          }        }    }  #if DEBUG      printf("code:0x%lx addr:0x%04x data:0x%02x chan:%d/r/n", code, addr, data, channel);#endif    }#elsevoid handle_code(u32 code){  u16 addr = code >> 8;  u8 data = code & 0xFF;      //printf("addr:0x%04x data:0x%02x/n", addr, data);   printf("{/"type/":/"trigger/", /"addr/":/"0x%04x/",/"data/":/"0x%02x/"}", addr, data);    LED_ON;  delay_ms(100);  LED_OFF;  delay_ms(400);    }#endifvoid main(void){    Init_Clk();    Init_GPIO();    Init_Timer2();    Init_Timer4();    Init_EEPROM();    #if DEBUG          Init_UART1();#endif              read_user_code_info(&user_info);    if(user_info.magic != USER_CODE_INFO_MAGIC)    {      memset(&user_info, 0, sizeof(user_info));      user_info.magic = USER_CODE_INFO_MAGIC;      user_info.number = 0;            write_user_code_info(&user_info);    }        dump_user_code_info(&user_info);        enableInterrupts();    while (1)    {        // button        if(GPIO_ReadInputPin(GPIOC, GPIO_PIN_4)==0)        {          button_down_count++;                  }        else        {          // long press, 3 seconds          if(button_down_count > 80000)          {              user_info.number = 0;              write_user_code_info(&user_info);                            learn_flag = 0;                            u8 i;              for(i = 0;i<5;i++)              {                LED_REVERSE;                delay_ms(80);              }              LED_OFF;                        }  // short press          else if(button_down_count > 10000)          {              learn_flag = !learn_flag;          }          button_down_count = 0;        }                if(check_flag)        {                      if(found_flag == 0)            {               if(puls_high_time>0)               {                   value = puls_low_time/puls_high_time;                                      if(value > 24 && value < 35)                   {                      found_flag =1;                      code = 0;                      bit_count = 0;                   }                  }            }            else            {                     if(bit_count == 0)                {                  puls_width_compare = puls_high_time+puls_low_time;                }                              value = puls_high_time+puls_low_time-puls_width_compare;                if(value < 20 && value > -20)                {                  code <<= 1;                  if(puls_high_time > puls_low_time)                  {                      code |= 0x1;                  }                  bit_count++;                  if(bit_count == 24)                  {                     handle_code(code);                     found_flag = 0;                  }                  }                else                {                  bit_count = 0;                  found_flag = 0;                }                            }                        check_flag = 0;        }                if(learn_flag)        {          learn_led_count++;                    if(learn_led_count == 4000)          {            LED_REVERSE;            learn_led_count = 0;          }        }        else        {          LED_OFF;        }            }}INTERRUPT_HANDLER(EXTI_PORTC_IRQHandler, 5){    //LED_REVERSE;    TIM2_Cmd(DISABLE);        time_count += TIM2_GetCounter();    if(GPIO_ReadInputPin(GPIOC, GPIO_PIN_3))    {        //LED_ON;        if(check_flag != 1)        {            puls_low_time = time_count;          check_flag = 1;                 }    }    else    {        //LED_OFF;        if(check_flag != 1)        {          puls_high_time = time_count;        }    }          TIM2_SetCounter(0);    time_count = 0;    TIM2_Cmd(ENABLE);    } INTERRUPT_HANDLER(TIM4_UPD_OVF_IRQHandler, 23) {    static u32 i=0;        i++;    if(i==25)    {      LED_OFF;          }    else if(i>=150)    {      TIM4_Cmd(DISABLE);      i=0;      last_valid_code = 0;    }        TIM4_ClearITPendingBit(TIM4_IT_UPDATE); } INTERRUPT_HANDLER(TIM2_UPD_OVF_BRK_IRQHandler, 13) {  /* In order to detect unexpected events during development,     it is recommended to set a breakpoint on the following instruction.  */   //LED_REVERSE;      time_count += 0xFFFF;    TIM2_ClearITPendingBit(TIM2_IT_UPDATE); }#ifdef USE_FULL_ASSERT/**  * @brief  Reports the name of the source file and the source line number  *   where the assert_param error has occurred.  * @param file: pointer to the source file name  * @param line: assert_param error line source number  * @retval : None  */void assert_failed(u8* file, u32 line){   /* User can add his own implementation to report the file name and line number,     ex: printf("Wrong parameters value: file %s on line %d/r/n", file, line) */  /* Infinite loop */  while (1)  {  }}#endif/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/从代码中可以看到，解码成功后，把数据格式化成JSON，然后通过printf输出到串口，这样路由器就可以从USB串口读取到解码数据了。
项目源代码：http://pan.baidu.com/s/1mhMXuNQ 密码：f1e5