706 lines
20 KiB
C
706 lines
20 KiB
C
#include "ev1527.h"
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// 定时周期
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//#define TIME_CYCLE 80
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#define TIME_CYCLE PERIOD_VALUE
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// #define TIME_CYCLE 20
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// 定义引导码的最小和最大持续时间（单位：us）
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#define MIN_LEAD_CODE (5600 / TIME_CYCLE)
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#define MAX_LEAD_CODE (16000 / TIME_CYCLE)
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// 定义数据位持续时间的最小和最大范围（单位：us）
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#define MIN_BIT_DURATION (100 / TIME_CYCLE)
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#define MAX_BIT_DURATION (2400 / TIME_CYCLE)
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// 定义功能字节在接收缓冲区中的索引位置
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#define FUNCTION_BYTE_INDEX 2
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// 定义功能值
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#define FUNCTION_1 0x08
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#define FUNCTION_2 0x04
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#define FUNCTION_3 0x02
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#define FUNCTION_4 0X01
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#define FUNCTION_5 0X03
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#define FUNCTION_6 0X05
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#define FUNCTION_7 0X07
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#define FUNCTION_8 0X00
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// 定义数据解码状态枚举
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typedef enum
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{
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LEAD_CODE, // 引导码状态
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HIGH_BIT, // 高位数据位状态
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LOW_BIT, // 低位数据位状态
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DATA_PROCESS, // 数据处理状态
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FUNCTION_PROCESS // 功能处理状态
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} Decode_State_t;
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// 定义全局变量和缓冲区
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#define ARRAY_SIZE 128
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static uint32_t Lead_Code_Count = 0; // 引导码计数
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static uint32_t High_Bit_Count = 0; // 高位数据位计数
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static uint32_t Low_Bit_Count = 0; // 低位数据位计数
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static uint32_t High_Bit_Duration = 0; // 高位数据位持续时间
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static uint32_t Low_Bit_Duration = 0; // 低位数据位持续时间
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static uint8_t Received_Buffer[ARRAY_SIZE] = {0}; // 接收数据缓冲区
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static uint8_t Received_Byte_Count = 0; // 接收数据字节计数
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static uint8_t Bit_Count = 0; // 接收数据位计数
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static uint8_t Received_Data = 0; // 接收到的数据
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static Decode_State_t RF_Decode_State = LEAD_CODE; // 数据解码状态
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void Decode_Data(void);
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void Execute_Function(void);
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void Reset_Decode_Parameters(void);
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/**----------------------------------------------------------------------------------------------**
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**函数名 ：EV1527端口配置
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**功能说明：初始化IO口，不同单片机的配置输入模式不一样，自行修改。
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**----------------------------------------------------------------------------------------------**/
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void EV1527_Init(void)
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{
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DATA_433_GPIO_CLK_ENABLE();
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GPIO_InitTypeDef GPIO_InitStruct;
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// 配置上拉输入
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GPIO_InitStruct.Pin = DATA_433_PIN;
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GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
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GPIO_InitStruct.Pull = GPIO_PULLUP;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
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HAL_GPIO_Init(DATA_433_GPIO_PORT, &GPIO_InitStruct);
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}
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#if 1
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/**----------------------------------------------------------------------------------------------**
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**函数名 ：RF信号解码函数
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**功能说明：解码从433MHz接收到的信号，并根据解码结果执行相应功能
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**调用说明：80us调用一次
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**----------------------------------------------------------------------------------------------**/
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void RF_Signal_Decode(void)
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{
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switch (RF_Decode_State)
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{
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case LEAD_CODE: // 引导码
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// 判断是否低电平
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if (HAL_GPIO_ReadPin(DATA_433_GPIO_PORT, DATA_433_PIN) == GPIO_PIN_RESET)
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{
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Lead_Code_Count++;
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}
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else // 高电平判断范围
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{
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// 判断引导码范围是否合法
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if (Lead_Code_Count >= MIN_LEAD_CODE && Lead_Code_Count <= MAX_LEAD_CODE)
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{
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Lead_Code_Count = 0;
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Reset_Decode_Parameters(); // 重置解码参数
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RF_Decode_State = HIGH_BIT; // 进入高位数据位判断状态
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}
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else
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{
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Reset_Decode_Parameters(); // 引导码范围不合法，重置解码参数
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}
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}
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break;
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case HIGH_BIT:
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// 判断是否高电平
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if (HAL_GPIO_ReadPin(DATA_433_GPIO_PORT, DATA_433_PIN) == GPIO_PIN_SET)
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{
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High_Bit_Count++;
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}
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else // 低电平判断范围
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{
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// 判断高位数据位范围是否合法
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if (High_Bit_Count >= MIN_BIT_DURATION && High_Bit_Count <= MAX_BIT_DURATION)
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{
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High_Bit_Duration = High_Bit_Count; // 保存计数值，用于区分0和1
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High_Bit_Count = 0;
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RF_Decode_State = LOW_BIT; // 进入低位数据位判断状态
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}
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else
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{
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Reset_Decode_Parameters(); // 高位数据位范围不合法，重置解码参数
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}
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}
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break;
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case LOW_BIT:
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// 判断是否低电平
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if (HAL_GPIO_ReadPin(DATA_433_GPIO_PORT, DATA_433_PIN) == GPIO_PIN_RESET)
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{
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Low_Bit_Count++;
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}
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else // 高电平判断范围
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{
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// 判断低位数据位范围是否合法
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if (Low_Bit_Count >= MIN_BIT_DURATION && Low_Bit_Count <= MAX_BIT_DURATION)
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{
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Low_Bit_Duration = Low_Bit_Count; // 保存计数值，用于区分0和1
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Low_Bit_Count = 0;
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RF_Decode_State = DATA_PROCESS; // 进入数据处理状态
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}
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else
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{
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Reset_Decode_Parameters(); // 低位数据位范围不合法，重置解码参数
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}
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}
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break;
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case DATA_PROCESS:
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Decode_Data(); // 解码数据
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if (Received_Byte_Count == 3)
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{
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// 接收到全部数据，包括地址和数据
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RF_Decode_State = FUNCTION_PROCESS;
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}
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else
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{ // 数据没接收完
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RF_Decode_State = HIGH_BIT; // 继续解码数据
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}
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break;
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case FUNCTION_PROCESS:
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Execute_Function(); // 执行功能
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Reset_Decode_Parameters(); // 重置解码参数
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break;
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default:
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Reset_Decode_Parameters(); // 默认状态，重置解码参数
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break;
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}
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}
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#endif
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/**----------------------------------------------------------------------------------------------**
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**函数名 ：Reset_Decode_Parameters
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**功能说明：重置解码参数，用于开始新的解码周期
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**----------------------------------------------------------------------------------------------**/
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void Reset_Decode_Parameters(void)
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{
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Bit_Count = 0;
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Received_Data = 0x00;
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Received_Byte_Count = 0;
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Lead_Code_Count = 0;
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High_Bit_Count = 0;
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Low_Bit_Count = 0;
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High_Bit_Duration = 0;
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Low_Bit_Duration = 0;
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RF_Decode_State = LEAD_CODE;
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}
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/**----------------------------------------------------------------------------------------------**
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**函数名 ：Decode_Data
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**功能说明：解码数据位，将解码后的数据存入相应的缓冲区中
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**----------------------------------------------------------------------------------------------**/
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void Decode_Data(void)
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{
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Received_Data <<= 1;
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// 根据高低电平持续时间判断0和1，然后将数据移位存入缓冲区
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if (High_Bit_Duration > Low_Bit_Duration)
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{
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Received_Data |= 0x01;
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}
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else
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{
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Received_Data &= 0xFE;
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}
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Bit_Count++;
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// 每接收8位数据，存入数据数组
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if (Bit_Count == 8)
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{
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Received_Buffer[Received_Byte_Count] = Received_Data;
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Received_Data = 0x00;
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Bit_Count = 0;
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Received_Byte_Count++;
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}
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}
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/**----------------------------------------------------------------------------------------------**
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**函数名 ：Execute_Function
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**功能说明：执行功能，根据解码后的数据进行相应操作
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**----------------------------------------------------------------------------------------------**/
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void Execute_Function(void)
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{
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// 判断解码后的功能字节，并执行相应操作
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printf("\r\n ADDR= %02x %02x %02x CMD=%02x",Received_Buffer[0],Received_Buffer[1],Received_Buffer[2], 0x0F&Received_Buffer[FUNCTION_BYTE_INDEX]);
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printf("\r\n Function# %d \r\n", (0x0F&Received_Buffer[FUNCTION_BYTE_INDEX]));
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}
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uint8_t bt_auto; //自动设置遥控接收波特率标志
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extern uint8_t rf_data[4];
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#if 0
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#define BIT1_HIGH_US 1000 // duty cycle =
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#define BIT1_LOW_US 500 //
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#define BIT0_HIGH_US 400
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#define BIT0_LOW_US 1100
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#endif
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#if 1 // RC_PROJECTOR
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#define BIT1_HIGH_US 1000 // duty cycle =
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#define BIT1_LOW_US 500 //
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#define BIT0_HIGH_US 250
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#define BIT0_LOW_US 1200
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#define ENDING_LOW_US 12000
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#define ENDING_HIGH_US 200
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#endif
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#if 0 // SOS BUTTON
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#define BIT1_HIGH_US 800 // duty cycle =
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#define BIT1_LOW_US 300 //
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#define BIT0_HIGH_US 300
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#define BIT0_LOW_US 800
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#define ENDING_LOW_US 8000
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#define ENDING_HIGH_US 245
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#endif
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//#define CNT_SHORT_US 305 // 305 usec
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#define LEADING_MS 12 // 8 msec
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void STS_RF_write_send_1(void)
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{
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HAL_GPIO_WritePin(RF_Send_GPIO_Port, RF_Send_GPIO_Pin, SET);
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HAL_Delay_Us(BIT1_HIGH_US);
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HAL_GPIO_WritePin(RF_Send_GPIO_Port, RF_Send_GPIO_Pin, RESET);
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HAL_Delay_Us(BIT1_LOW_US);
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}
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void STS_RF_write_send_0(void)
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{
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HAL_GPIO_WritePin(RF_Send_GPIO_Port, RF_Send_GPIO_Pin, SET);
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HAL_Delay_Us(BIT0_HIGH_US);
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HAL_GPIO_WritePin(RF_Send_GPIO_Port, RF_Send_GPIO_Pin, RESET);
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HAL_Delay_Us(BIT0_LOW_US);
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}
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void STS_RF_write_send_leading(void)
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{
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HAL_GPIO_WritePin(RF_Send_GPIO_Port, RF_Send_GPIO_Pin, RESET);
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HAL_Delay_Us(LEADING_MS*1000);
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}
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void STS_RF_write_send_ending(void)
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{
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HAL_GPIO_WritePin(RF_Send_GPIO_Port, RF_Send_GPIO_Pin, SET);
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HAL_Delay_Us(ENDING_HIGH_US);
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HAL_GPIO_WritePin(RF_Send_GPIO_Port, RF_Send_GPIO_Pin, RESET);
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HAL_Delay_Us(ENDING_LOW_US);
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}
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void STS_RF_Send_Button_Multi_Times(uint8_t *rf_payload, uint8_t one_button, uint8_t rf_length, uint8_t mt)
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{
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// normally, send 5-8 cycles of same address and cmd code
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uint8_t push_button_cmd = one_button;
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for (uint8_t i=0; i< mt; i++)
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{
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rf_payload[2] |= ((push_button_cmd));
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printf("%d : Address=%02X:%02X:%01x CMD=%01X\r\n",i,
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rf_payload[0], rf_payload[1], rf_payload[2]&0xF0, push_button_cmd);
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STS_RF_Send_AddressBit_and_CmdBit(rf_payload, rf_length);
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rf_payload[2] &= 0xF0; // cmd set to 0
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}
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}
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void STS_RF_Send_Multi_Times(uint8_t *rf_payload, uint8_t rf_length, uint8_t mt)
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{
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// normally, send 5-8 cycles of same address and cmd code
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// uint8_t push_button_cmd = 0x01;
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for (uint8_t i=0; i< mt; i++)
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{
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rf_payload[2] |= ((i+1) <<4);
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printf("%d : Address=%02X:%02X:%01x CMD=%01X\r\n",i, rf_payload[0],rf_payload[1],rf_payload[2]&0x0F, (rf_payload[2]>>4)&0x0F);
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STS_RF_Send_AddressBit_and_CmdBit(rf_payload, rf_length);
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rf_payload[2] &= 0x0F; // cmd set to 0
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}
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}
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void STS_RF_Send_AddressBit_and_CmdBit(uint8_t *rf_payload, uint8_t rf_length)
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{
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// send the combined address code and cmd code
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// 20 bit address + 4 bit cmd code == 24 bits == 3 bytes
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// send leading or sync signal for receiver to sync the RX clock
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// printf("leading sync signal ...\r\n");
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//STS_RF_write_send_leading();
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// printf("address bits and cmd bits ...\r\n");
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// send address and cmd code
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for (uint8_t i=0; i < rf_length; i++)
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{
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for (uint8_t j=0; j < 8; j++)
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{
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// if (0x01&(rf_payload[i]>>j)) // TODO XXXX if (0x80&(rf_payload[i]<<j))
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if (0x80&(rf_payload[i]<<j))
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{
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STS_RF_write_send_1();
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} else {
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STS_RF_write_send_0();
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}
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}
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}
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STS_RF_write_send_ending();
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// printf("ending bits ...\r\n");
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}
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#if 0
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/**
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******************************************************************************
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* @file bsp_irda.c
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* @author fire
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* @version V1.0
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* @date 2013-xx-xx
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* @brief 红外遥控器接口
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******************************************************************************
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* @attention
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*
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* 实验平台:野火 F103-指南者 STM32 开发板
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* 论坛 :http://www.firebbs.cn
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* 淘宝 :https://fire-stm32.taobao.com
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*
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******************************************************************************
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*/
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//#include "./IrDa/bsp_irda.h"
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//#include "./systick/bsp_SysTick.h"
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//#include "./led/bsp_led.h"
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uint32_t frame_data=0; /* 一帧数据缓存 */
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uint8_t frame_cnt=0;
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uint8_t frame_flag=0; /* 一帧数据接收完成标志 */
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/**
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* @brief 配置嵌套向量中断控制器NVIC
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* @param 无
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* @retval 无
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*/
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static void NVIC_Configuration(void)
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{
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NVIC_InitTypeDef NVIC_InitStructure;
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/* Configure one bit for preemption priority */
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NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
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/* 配置P[A|B|C|D|E]11为中断源 */
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NVIC_InitStructure.NVIC_IRQChannel = IRDA_EXTI_IRQN;
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 5;
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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}
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/* 初始化红外接收头1838用到的IO */
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void IrDa_Init(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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EXTI_InitTypeDef EXTI_InitStructure;
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/* config the extiline clock and AFIO clock */
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RCC_APB2PeriphClockCmd(IRDA_GPIO_CLK | RCC_APB2Periph_AFIO,ENABLE);
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/* config the NVIC */
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NVIC_Configuration();
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/* EXTI line gpio config */
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GPIO_InitStructure.GPIO_Pin = IRDA_GPIO_PIN;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
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GPIO_Init(IRDA_GPIO_PORT, &GPIO_InitStructure);
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/* EXTI line mode config */
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GPIO_EXTILineConfig(IRDA_GPIO_PORT_SOURCE, IRDA_GPIO_PIN_SOURCE);
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EXTI_InitStructure.EXTI_Line = IRDA_EXTI_LINE;
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EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
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EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; //下降沿中断
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EXTI_InitStructure.EXTI_LineCmd = ENABLE;
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EXTI_Init(&EXTI_InitStructure);
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}
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/* 获取高电平的时间 */
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uint8_t Get_Pulse_Time(void)
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{
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uint8_t time = 0;
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while( IrDa_DATA_IN() )
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{
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time ++;
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Delay_us(2); // 延时 20us
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if(time == 250)
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return time; // 超时溢出
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}
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return time;
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}
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/*
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* 帧数据有4个字节，第一个字节是遥控的ID，第二个字节是第一个字节的反码
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* 第三个数据是遥控的真正的键值，第四个字节是第三个字节的反码
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*/
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uint8_t IrDa_Process(void)
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{
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uint8_t first_byte, sec_byte, tir_byte, fou_byte;
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first_byte = frame_data >> 24;
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sec_byte = (frame_data>>16) & 0xff;
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tir_byte = frame_data >> 8;
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fou_byte = frame_data;
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/* 记得清标志位 */
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frame_flag = 0;
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if( (first_byte==(uint8_t)~sec_byte) && (first_byte==IRDA_ID) )
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{
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if( tir_byte == (u8)~fou_byte )
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return tir_byte;
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}
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return 0; /* 错误返回 */
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}
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// IO 线中断, 接红外接收头的数据管脚
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void IRDA_EXTI_IRQHANDLER_FUN(void)
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{
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uint8_t pulse_time = 0;
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uint8_t leader_code_flag = 0; /* 引导码标志位，当引导码出现时，表示一帧数据开始 */
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uint8_t irda_data = 0; /* 数据暂存位 */
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if(EXTI_GetITStatus(IRDA_EXTI_LINE) != RESET) /* 确保是否产生了EXTI Line中断 */
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{
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while(1)
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{
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if( IrDa_DATA_IN()== SET ) /* 只测量高电平的时间 */
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{
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pulse_time = Get_Pulse_Time();
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/* >=5ms 不是有用信号 当出现干扰或者连发码时，也会break跳出while(1)循环 */
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if( pulse_time >= 250 )
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{
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break; /* 跳出while(1)循环 */
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}
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if(pulse_time>=200 && pulse_time<250) /* 获得前导位 4ms~4.5ms */
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{
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leader_code_flag = 1;
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}
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else if(pulse_time>=10 && pulse_time<50) /* 0.56ms: 0.2ms~1ms */
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{
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irda_data = 0;
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}
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else if(pulse_time>=50 && pulse_time<100) /* 1.68ms：1ms~2ms */
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{
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irda_data =1 ;
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}
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else if( pulse_time>=100 && pulse_time<=200 ) /* 2.1ms：2ms~4ms */
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{/* 连发码，在第二次中断出现 */
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frame_flag = 1; /* 一帧数据接收完成 */
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frame_cnt++; /* 按键次数加1 */
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isr_cnt ++; /* 进中断一次加1 */
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break; /* 跳出while(1)循环 */
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}
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if( leader_code_flag == 1 )
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{/* 在第一次中断中完成 */
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frame_data <<= 1;
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frame_data += irda_data;
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frame_cnt = 0;
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isr_cnt = 1;
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}
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}
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}// while(1)
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EXTI_ClearITPendingBit(IRDA_EXTI_LINE); //清除中断标志位
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//LED2_TOGGLE;
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}
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}
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#define CLI() __set_PRIMASK(1) /* 关闭总中断 */
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#define SEI() __set_PRIMASK(0) /* 开放总中断 */
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extern uint8_t frame_flag;
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extern uint8_t isr_cnt;
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extern uint8_t frame_cnt;
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/**
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* @brief 主函数
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* @param 无
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* @retval 无
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*/
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int irda_main(void)
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{
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uint8_t key_val;
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/* config the led */
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LED_GPIO_Config();
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LED1_ON;
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/* 配置SysTick 为10us中断一次 */
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SysTick_Init();
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/* 重新配置SysTick的中断优先级为最高，要不然SysTick延时中断抢占不了IO EXTI中断
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* 因为SysTick初始化时默认配置的优先级是最低的
|
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* 或者当你用其他定时器做延时的时候，要配置定时器的优先级高于IO EXTI中断的优先级
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*/
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NVIC_SetPriority (SysTick_IRQn, 0);
|
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/* USART1 config 115200 8-N-1 */
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USART_Config();
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printf("\r\n 这是一个红外遥控发射与接收实验 \r\n");
|
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/* 初始化红外接收头CP1838用到的IO */
|
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IrDa_Init();
|
||
|
||
for(;;)
|
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{
|
||
if( frame_flag == 1 ) /* 一帧红外数据接收完成 */
|
||
{
|
||
key_val = IrDa_Process();
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||
printf("\r\n key_val=%d \r\n",key_val);
|
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printf("\r\n 按键次数frame_cnt=%d \r\n",frame_cnt);
|
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printf("\r\n 中断次数isr_cnt=%d \r\n",isr_cnt);
|
||
|
||
/* 不同的遥控器面板对应不同的键值，需要实际测量 */
|
||
switch( key_val )
|
||
{
|
||
case 0:
|
||
LED1_TOGGLE;
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||
printf("\r\n key_val=%d \r\n",key_val);
|
||
printf("\r\n Error \r\n");
|
||
break;
|
||
|
||
case 162:
|
||
LED1_TOGGLE;
|
||
printf("\r\n key_val=%d \r\n",key_val);
|
||
printf("\r\n POWER \r\n");
|
||
break;
|
||
|
||
case 226:
|
||
LED1_TOGGLE;
|
||
printf("\r\n key_val=%d \r\n",key_val);
|
||
printf("\r\n MENU \r\n");
|
||
break;
|
||
|
||
case 34:
|
||
LED1_TOGGLE;
|
||
printf("\r\n key_val=%d \r\n",key_val);
|
||
printf("\r\n TEST \r\n");
|
||
break;
|
||
|
||
case 2:
|
||
LED1_TOGGLE;
|
||
printf("\r\n key_val=%d \r\n",key_val);
|
||
printf("\r\n + \r\n");
|
||
break;
|
||
|
||
case 194:
|
||
LED1_TOGGLE;
|
||
printf("\r\n key_val=%d \r\n",key_val);
|
||
printf("\r\n RETURN \r\n");
|
||
break;
|
||
|
||
case 224:
|
||
LED1_TOGGLE;
|
||
printf("\r\n key_val=%d \r\n",key_val);
|
||
printf("\r\n |<< \r\n");
|
||
break;
|
||
|
||
case 168:
|
||
LED1_TOGGLE;
|
||
printf("\r\n key_val=%d \r\n",key_val);
|
||
printf("\r\n > \r\n");
|
||
break;
|
||
|
||
case 144:
|
||
LED1_TOGGLE;
|
||
printf("\r\n key_val=%d \r\n",key_val);
|
||
printf("\r\n >>| \r\n");
|
||
break;
|
||
|
||
case 104:
|
||
LED1_TOGGLE;
|
||
printf("\r\n key_val=%d \r\n",key_val);
|
||
printf("\r\n 0 \r\n");
|
||
break;
|
||
|
||
case 152:
|
||
LED1_TOGGLE;
|
||
printf("\r\n key_val=%d \r\n",key_val);
|
||
printf("\r\n - \r\n");
|
||
break;
|
||
|
||
case 176:
|
||
LED1_TOGGLE;
|
||
printf("\r\n key_val=%d \r\n",key_val);
|
||
printf("\r\n C \r\n");
|
||
break;
|
||
|
||
case 48:
|
||
LED1_TOGGLE;
|
||
printf("\r\n key_val=%d \r\n",key_val);
|
||
printf("\r\n 1 \r\n");
|
||
break;
|
||
|
||
case 24:
|
||
LED1_TOGGLE;
|
||
printf("\r\n key_val=%d \r\n",key_val);
|
||
printf("\r\n 2 \r\n");
|
||
break;
|
||
|
||
case 122:
|
||
LED1_TOGGLE;
|
||
printf("\r\n key_val=%d \r\n",key_val);
|
||
printf("\r\n 3 \r\n");
|
||
break;
|
||
|
||
case 16:
|
||
LED1_TOGGLE;
|
||
printf("\r\n key_val=%d \r\n",key_val);
|
||
printf("\r\n 4 \r\n");
|
||
break;
|
||
|
||
case 56:
|
||
LED1_TOGGLE;
|
||
printf("\r\n key_val=%d \r\n",key_val);
|
||
printf("\r\n 5 \r\n");
|
||
break;
|
||
|
||
case 90:
|
||
LED1_TOGGLE;
|
||
printf("\r\n key_val=%d \r\n",key_val);
|
||
printf("\r\n 6 \r\n");
|
||
break;
|
||
|
||
case 66:
|
||
LED1_TOGGLE;
|
||
printf("\r\n key_val=%d \r\n",key_val);
|
||
printf("\r\n 7 \r\n");
|
||
break;
|
||
|
||
case 74:
|
||
LED1_TOGGLE;
|
||
printf("\r\n key_val=%d \r\n",key_val);
|
||
printf("\r\n 8 \r\n");
|
||
break;
|
||
|
||
case 82:
|
||
LED1_TOGGLE;
|
||
printf("\r\n key_val=%d \r\n",key_val);
|
||
printf("\r\n 9 \r\n");
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
#endif
|
||
|