433射频收发参考程序C语言（STM32）

#include"main.h" unsigned char rf_ok=0; unsigned char rf_start=0,rf_data[4]={0}; unsigned char rf_fun=0; unsigned short rf_time[2]={0},rf_id=0; void rf_init(void) { GPIO_InitTypeDef GPIO_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; EXTI_InitTypeDef EXTI_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE,ENABLE); GPIO_InitStructure.GPIO_Pin=GPIO_Pin_3; GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IPU; GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz; GPIO_Init(GPIOE,&GPIO_InitStructure); GPIO_EXTILineConfig(GPIO_PortSourceGPIOE,GPIO_PinSource3); EXTI_InitStructure.EXTI_Line=EXTI_Line3; EXTI_InitStructure.EXTI_Mode=EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger=EXTI_Trigger_Rising_Falling; EXTI_InitStructure.EXTI_LineCmd=ENABLE; EXTI_Init(&EXTI_InitStructure); NVIC_InitStructure.NVIC_IRQChannel=EXTI3_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0x03; NVIC_InitStructure.NVIC_IRQChannelSubPriority=0x01; NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE; NVIC_Init(&NVIC_InitStructure); } void rf_ctrl(void) { if(key_press&K_SET) { if(menu==MASTER) { menu=TIME; if(*(unsigned short*)&eeprom_buffer[0]) save=1; } else { menu=MASTER; rf_id=0; *(unsigned short*)&eeprom_buffer[0]=0; } } if(rf_ok) { if(menu!=MASTER&&rf_id==*(unsigned short*)&eeprom_buffer[0]&&rf_fun==0x78) { if(menu==TIME) { menu=BIG_KEY; } else if(menu==BIG_KEY) { if(menu_sub==0) menu=DIFFICULT; if(menu_sub==1) { if(*(unsigned short*)&eeprom_buffer[2]) save=1; menu=TIME; menu_sub=0; } } else if(menu==DIFFICULT) { if(menu_sub==0) menu=COLLECT; if(menu_sub==1) { eeprom_buffer[8]=difficult; save=1; menu=TIME; menu_sub=0; } } else if(menu==COLLECT) { menu=LIGHT; } else if(menu==LIGHT) { if(menu_sub==0) menu=SET_TIME; if(menu_sub==1) { eeprom_buffer[9]=light; save=1; menu=TIME; menu_sub=0; } } else if(menu==SET_TIME) { if(menu_sub==0) menu=SET_TIMER; } else if(menu==SET_TIMER) { if(menu_sub==0) menu=TIME; if(menu_sub) { *(unsigned long*)&eeprom_buffer[4]=timer; save=1; menu=TIME; menu_sub=0; } } else if(menu==TIMER) { if(menu_sub==0||menu_sub==3) { menu_sub=0; menu=TIME; } } } if(rf_id==*(unsigned short*)&eeprom_buffer[2]&&rf_fun==0x78) { if(menu==TIMER) { if(menu_sub==0) { menu_sub=1; } else if(menu_sub==1) { menu_sub=2; } } else { menu=TIMER; } } switch(menu) { case MASTER: *(unsigned short*)&eeprom_buffer[0]=rf_id; break; case BIG_KEY: if(rf_id!=*(unsigned short*)&eeprom_buffer[0]) { menu_sub=1; *(unsigned short*)&eeprom_buffer[2]=rf_id; } else { rf_id=*(unsigned short*)&eeprom_buffer[2];//display current id } break; case DIFFICULT: if(rf_id==*(unsigned short*)&eeprom_buffer[0]&&rf_fun==0xd2)//难度 { menu_sub=1; if(difficult<20) difficult++; else difficult=1; } break; case COLLECT: break; case LIGHT: if(rf_id==*(unsigned short*)&eeprom_buffer[0]&&rf_fun==0xd2)//亮度调整 { menu_sub=1; if(light<10) light++; else light=0; } break; case SET_TIME: if(rf_id==*(unsigned short*)&eeprom_buffer[0]) { if(rf_fun==0x78) { if(menu_sub==1) menu_sub=2;//set hour else if(menu_sub==2) menu_sub=3;//set day else if(menu_sub==3) menu_sub=4;//set month else if(menu_sub==4) menu_sub=5;//set year else if(menu_sub==5) {menu_sub=0; set_time=1;}//set rtc } if(rf_fun==0xd2) { if(menu_sub==0) menu_sub=1;//set minute if(menu_sub==1) { set.second=0; if(set.minute<59) set.minute++; else set.minute=0; } if(menu_sub==2) { if(set.hour<23) set.hour++; else set.hour=0; } if(menu_sub==3) { if(set.day<31) set.day++; else set.day=1; } if(menu_sub==4) { if(set.month<12) set.month++; else set.month=1; } if(menu_sub==5) { if(set.year<2099) set.year++; else set.year=2018; } } } break; case SET_TIMER: if(rf_id==*(unsigned short*)&eeprom_buffer[0]) { if(rf_fun==0xd2) { if(menu_sub)//模式 { if(timer==52000) timer=61800; else if(timer==61800) timer=66666; else if(timer==66666) timer=88888; else if(timer==88888) timer=100000; else if(timer==100000) timer=111100; else if(timer==111100) timer=121200; else if(timer==121200) timer=131400; else if(timer==131400) timer=210000; else if(timer==210000)