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+/*
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++-----------------------
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+|
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+| 红外自学习遥控
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+|
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+| Chang Logs:
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+| Date Author Notes
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+| 2010-01-02 aozima The bate version.
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++----------------------------------------------------
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+*/
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+
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+#include <rtthread.h>
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+#include <dfs_posix.h>
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+#include <stm32f10x.h>
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+
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+unsigned int rem_mode = 0;//红外模式 0:没启动,1:自学习,2:正常解码
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+
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+static unsigned int first_tick = 0;
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+static unsigned int rx_count = 0;
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+static unsigned short rm_code[100];
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+
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+struct rem_codes_typedef
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+{
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+ unsigned int len;
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+ unsigned short rem_code[100];
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+};
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+struct rem_codes_typedef * p_rem_code_src = RT_NULL;
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+
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+static const char str1[]="KEY_UP"; /* 上 */
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+static const char str2[]="KEY_DOWN"; /* 下 */
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+static const char str3[]="KEY_LEFT"; /* 左 */
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+static const char str4[]="KEY_RIGHT"; /* 右 */
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+static const char str5[]="KEY_ENTER"; /* 确认 */
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+static const char str6[]="KEY_RETURN"; /* 返回 */
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+static const char * desc_key[6]= {str1,str2,str3,str4,str5,str6};
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+#define wucha 15
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+
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+
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+/* tim5 configure */
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+static void TIM5_Configuration(void)
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+{
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+ /* 时钟及分频设置 */
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+ {
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+ TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
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+ /* Time Base configuration */
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+ /* 72M/720 = 0.01ms */
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+ TIM_TimeBaseStructure.TIM_Prescaler = 720-1;
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+ //计数模式:向上计数
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+ TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
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+ TIM_TimeBaseStructure.TIM_Period = 0xFFFF;
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+ TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
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+ //重新计数的起始值
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+ TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
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+
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+ TIM_TimeBaseInit(TIM5, &TIM_TimeBaseStructure);
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+ }
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+
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+ /* 捕获设置 */
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+ {
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+ TIM_ICInitTypeDef TIM_ICInitStructure;
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+
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+ TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;/* 每次检测到捕获输入就触发一次捕获 */
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+ TIM_ICInitStructure.TIM_ICFilter = 8;/* 滤波 */
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+
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+ TIM_ICInitStructure.TIM_Channel = TIM_Channel_3;//选择通道3
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+ TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Falling;//下降沿
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+ TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;//通道方向选择
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+ TIM_ICInit(TIM5, &TIM_ICInitStructure);
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+
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+ TIM_ICInitStructure.TIM_Channel = TIM_Channel_4;//选择通道3
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+ TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;//上升沿
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+ TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_IndirectTI;//通道方向选择
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+ TIM_ICInit(TIM5, &TIM_ICInitStructure);
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+ }
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+
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+ /* 输入触发源选择:外部输入触发 */
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+ TIM_SelectInputTrigger(TIM5, TIM_TS_ETRF);//TIM_TS_ETRF 外部触发
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+ /* 从模式-复位模式 */
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+ /* TIM_SlaveMode_Reset 4:选中的触发输入(TRGI)的上升沿重新初始化计数器，并且产生一个更新寄存器的信号 */
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+ TIM_SelectSlaveMode(TIM5, TIM_SlaveMode_Reset);
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+ TIM_SelectMasterSlaveMode(TIM5, TIM_MasterSlaveMode_Enable);
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+
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+ /* TIM enable counter */
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+ TIM_Cmd(TIM5, ENABLE);
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+
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+ /* Enable the CC3 and CC4 Interrupt Request */
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+ TIM_ITConfig(TIM5, TIM_IT_CC3, ENABLE);
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+ TIM_ITConfig(TIM5, TIM_IT_CC4, ENABLE);
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+}
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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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+
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+ /* Enable the TIM5 global Interrupt */
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+ NVIC_InitStructure.NVIC_IRQChannel = TIM5_IRQn;
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+ NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
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+ NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
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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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+
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+static void RCC_Configuration(void)
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+{
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+ RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);
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+
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+ /* TIM5 clock enable */
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+ RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5, ENABLE);
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+
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+ /* clock enable */
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+ RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOA ,ENABLE);
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+}
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+
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+static void GPIO_Configuration(void)
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+{
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+ GPIO_InitTypeDef GPIO_InitStructure;
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+
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+ /* TIM5 channel 3 pin (PA.02) configuration */
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+ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2;
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+ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
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+ GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
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+
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+ GPIO_Init(GPIOA, &GPIO_InitStructure);
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+}
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+
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+void rem_start(void)
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+{
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+ RCC_Configuration();
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+ GPIO_Configuration();
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+
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+ /* configure TIM5 for remote and encoder */
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+ NVIC_Configuration();
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+ TIM5_Configuration();
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+
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+ p_rem_code_src = rt_malloc( 1500 );
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+
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+ /* 解读红外信息 */
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+ {
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+ int fd,size;
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+ char buf[6];//文件读取临时缓存
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+ unsigned int i;
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+ unsigned short tmp;
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+ unsigned int read_index = 0;
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+ unsigned int EOF_flag = 1;
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+
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+ rt_kprintf("\r\n解读红外信息");
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+ fd = open("/resource/remote.txt",O_RDONLY,0);
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+ if( fd>0 )
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+ {
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+ rt_kprintf("\r/resource/remote.txt打开成功");
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+ while( EOF_flag )
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+ {
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+ //读取长度
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+ size = read(fd,buf,6);
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+ if( (size == 6) && (buf[4]=='\r') && buf[5]=='\n' )
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+ {
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+ //转换得到样本数据长度
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+ tmp = (buf[0]-'0')*1000
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+ + (buf[1]-'0')*100
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+ + (buf[2]-'0')*10
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+ + (buf[3]-'0');
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+ if( tmp<100 )
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+ {
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+ unsigned int code_len = tmp;
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+ p_rem_code_src[read_index].len = code_len;
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+ //如果样本长度符合
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+ for(i=0; i<code_len; i++)
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+ {
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+ size = read(fd,buf,6);
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+ if( (size == 6) && (buf[4]=='\r') && buf[5]=='\n' )
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+ {
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+ tmp = (buf[0]-'0')*1000
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+ + (buf[1]-'0')*100
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+ + (buf[2]-'0')*10
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+ + (buf[3]-'0');
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+ p_rem_code_src[read_index].rem_code[i] = tmp;
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+ }
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+ }
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+ read_index++;
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+ }
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+ }
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+ else
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+ {
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+ EOF_flag = 0;
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+ }
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+ }//while( EOF_flag )
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+ //设置工作模式为正常识别模式
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+ rem_mode = 2;
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+ rt_kprintf("\r红外遥控编码文件解读完成,已打开红外遥控功能\r\n");
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+ }
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+ else
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+ {
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+ rt_kprintf("\r红外遥控编码文件 /resource/remote.txt 打开失败! fd:%d\r\n无法开启红外遥控功能.\r\n请执行rem_study()进行自动学习\r\n",fd);
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+ }
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+ close(fd);
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+ }/* 解读红外信息 */
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+}
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+
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+#include <rtgui/event.h>
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+void rem_encoder(struct rtgui_event_kbd * p)
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+{
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+ struct rtgui_event_kbd * p_kbd_event = p;
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+ /* 红外遥控匹配 */
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+ if( (rem_mode==2) && (rt_tick_get()>first_tick+10) && (rx_count > 0) )
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+ {
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+ /* 手动清零第一个捕获结果 */
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+ rm_code[0] = 0;
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+ rx_count = 0;
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+#if 0
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+ {
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+ unsigned int iii;
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+ for(iii=0; iii<100; iii++)
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+ {
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+ rt_kprintf("\r\n%d",rm_code[iii]);
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+ }
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+ }
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+#endif
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+
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+#if 1
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+ {
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+ unsigned int tmp;
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+ unsigned int fflag = 0;
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+ unsigned int rem_cmp_n = 6;
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+
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+ //循环匹配所有KEY
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+ while( rem_cmp_n )
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+ {
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+ unsigned int tmp2 = p_rem_code_src[ 6-rem_cmp_n ].len;
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+ //rt_kprintf("\r\nrem_cmp_n:%d tmp2:%d",rem_cmp_n,tmp2);
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+ if( tmp2 )
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+ {
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+
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+ for(tmp=0; tmp<tmp2; tmp++)
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+ {
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+ if( !( (rm_code[tmp] < p_rem_code_src[6-rem_cmp_n].rem_code[tmp]+wucha) && (rm_code[tmp] > p_rem_code_src[6-rem_cmp_n].rem_code[tmp]-wucha)) )
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+ {
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+ fflag = 1;
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+ //rt_kprintf("\r\nerr %d: rm_code[%d] p_rem_code_src[%d].rem_code[%d]",tmp,rm_code[tmp],6-rem_cmp_n,p_rem_code_src[ 6-rem_cmp_n].rem_code[tmp]);
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+ }
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+ }
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+ }
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+ else
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+ {
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+ fflag = 1;
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+ rt_kprintf("\r\n解码失败");
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+ }
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+
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+ if(fflag==0)
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+ {
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+ //成功
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+ rt_kprintf("\r\n识别到遥控按键 %s",desc_key[6-rem_cmp_n]);
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+ switch( rem_cmp_n )
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+ {
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+ case 6:
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+ p_kbd_event->key = RTGUIK_UP;
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+ break;
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+ case 5:
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+ p_kbd_event->key = RTGUIK_DOWN;
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+ break;
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+ case 4:
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+ p_kbd_event->key = RTGUIK_LEFT;
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+ break;
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+ case 3:
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+ p_kbd_event->key = RTGUIK_RIGHT;
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+ break;
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+ case 2:
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+ p_kbd_event->key = RTGUIK_RETURN;
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+ break;
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+ case 1:
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+ p_kbd_event->key = RTGUIK_HOME;
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+ break;
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+ default:
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+ break;
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+ }
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+ rem_cmp_n = 0;
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+ }
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+ else
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+ {
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+ //不成功
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+ fflag = 0;
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+ rem_cmp_n --;
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+ }
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+
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+ }
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+ }
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+#endif
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+ }//红外遥控匹配
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+}
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+
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+/* remote isr */
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+void remote_isr(void)
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+{
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+ static unsigned int clr_flag = 1;
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+ unsigned int tick_now = rt_tick_get();
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+
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+ /* 红外遥控下降沿 */
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+ if(TIM_GetITStatus(TIM5, TIM_IT_CC3) == SET)
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+ {
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+ switch( rem_mode )
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+ {
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+ case 0://未启动
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+ break;
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+ case 1://自学习
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+ if( (rx_count==0) || (rx_count>90) || (tick_now>first_tick+10) )
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+ {
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+ //需要清0
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+ rx_count = 0;
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+ clr_flag = 1;
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+ }
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+ if( rx_count<100 )
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+ {
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+ rm_code[rx_count++] = TIM_GetCapture3(TIM5);
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+ }
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+ break;
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+ case 2://正常解码
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+ if( (rx_count>90) || tick_now>first_tick+10 )
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+ {
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+ rx_count = 0;
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+ clr_flag = 1;
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+ }
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+ if(rx_count<100 )
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+ {
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+ rm_code[rx_count++] = TIM_GetCapture3(TIM5);
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+ }
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+ break;
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+ default:
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+ rem_mode = 0;//设置模式为未启动
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+ break;
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+ }
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+ TIM_ClearITPendingBit(TIM5, TIM_IT_CC3);
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+ }
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+
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+ /* 红外遥控上升沿 */
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+ if(TIM_GetITStatus(TIM5, TIM_IT_CC4) == SET)
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+ {
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+ switch( rem_mode )
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+ {
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+ case 0://未启动
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+ break;
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+ case 1://自学习
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+ if( rx_count<100 )
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+ {
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+ rm_code[rx_count++] = TIM_GetCapture4(TIM5);
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+ }
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+ break;
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+ case 2://正常解码
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+ if( rx_count<100 )
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+ {
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+ rm_code[rx_count++] = TIM_GetCapture4(TIM5);
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+ }
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+ break;
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+ default:
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+ rem_mode = 0;//设置模式为未启动
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+ break;
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+ }
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+ TIM_ClearITPendingBit(TIM5, TIM_IT_CC4);
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+ }
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+
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+ //更新时间戳
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+ first_tick = tick_now;
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+ //检测是否需要重置计数器
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+ if( clr_flag )
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+ {
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+ //重置计数器
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+ TIM_SetCounter(TIM5,0);
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+ clr_flag = 0;
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+ }
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+}
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+
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+#include <finsh.h>
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+/* 启动红外学习程序 */
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+int rem_study(void)
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+{
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+ unsigned int i;
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+
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+ int fd,size;
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+ unsigned char tmp_buf[606];
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+
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+ rem_mode = 1;
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+ rx_count = 0;
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+ rt_kprintf("\r\n红外遥控自学习功能启动");
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+ fd = open("/resource/remote.txt",O_WRONLY | O_TRUNC,0);
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+ if( !(fd<0) )
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+ {
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+ rt_kprintf("\r\n红外遥控编码文件 /resource/remote.txt 创建成功");
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+ }
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+ else
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+ {
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+ rt_kprintf("\r红外遥控编码文件 /resource/remote.txt 创建失败.\r\n学习程序中止.");
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+ return -1;
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+ }
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+
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+ //学习6个键盘
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+ for( i=0; i<6; i++)
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+ {
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+ unsigned int is_ok = 1;
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+ rt_kprintf("\r\npress key %s",desc_key[i]);
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+ while( is_ok==1 )
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|
+ {
|
|
|
+ if( (rem_mode==1) && (rt_tick_get()>first_tick+10) && (rx_count > 0) )
|
|
|
+ {
|
|
|
+ unsigned int a,b;
|
|
|
+ unsigned char * p = tmp_buf;
|
|
|
+
|
|
|
+ rt_kprintf("\r\n%s",desc_key[i]);
|
|
|
+
|
|
|
+ b = rx_count;
|
|
|
+ p_rem_code_src[i].len = rx_count;
|
|
|
+
|
|
|
+ /* TIM disable counter */
|
|
|
+ TIM_Cmd(TIM5, DISABLE);
|
|
|
+ /* disable the CC3 and CC4 Interrupt Request */
|
|
|
+ TIM_ITConfig(TIM5, TIM_IT_CC3, DISABLE);
|
|
|
+ TIM_ITConfig(TIM5, TIM_IT_CC4, DISABLE);
|
|
|
+
|
|
|
+ p[0] = rx_count / 1000 +'0';
|
|
|
+ rx_count = rx_count % 1000;
|
|
|
+ p[1] = rx_count / 100 +'0';
|
|
|
+ rx_count = rx_count % 100;
|
|
|
+ p[2] = rx_count / 10 +'0';
|
|
|
+ rx_count = rx_count % 10;
|
|
|
+ p[3] = rx_count +'0';
|
|
|
+ rx_count = 0;
|
|
|
+ p[4] = '\r';
|
|
|
+ p[5] = '\n';
|
|
|
+ p += 6;
|
|
|
+
|
|
|
+ rm_code[0] = 0;
|
|
|
+
|
|
|
+ for( a=0; a<b; a++)
|
|
|
+ {
|
|
|
+ p_rem_code_src[i].rem_code[a] = rm_code[a];
|
|
|
+ p[0] = rm_code[a] / 1000 +'0';
|
|
|
+ rm_code[a] = rm_code[a] % 1000;
|
|
|
+ p[1] = rm_code[a] / 100 +'0';
|
|
|
+ rm_code[a] = rm_code[a] % 100;
|
|
|
+ p[2] = rm_code[a] / 10 +'0';
|
|
|
+ rm_code[a] = rm_code[a] % 10;
|
|
|
+ p[3] = rm_code[a] +'0';
|
|
|
+ p[4] = '\r';
|
|
|
+ p[5] = '\n';
|
|
|
+ p += 6;
|
|
|
+ }
|
|
|
+ size = write(fd,(char*)tmp_buf,(b+1)*6 );
|
|
|
+ if( size==((b+1)*6) )
|
|
|
+ {
|
|
|
+ rt_kprintf("文件写入成功");
|
|
|
+ is_ok++;
|
|
|
+ rt_thread_delay( 2 );
|
|
|
+
|
|
|
+ /* 重新打开 TIM5 进行捕获 */
|
|
|
+ TIM_ClearITPendingBit(TIM5, TIM_IT_CC3);
|
|
|
+ TIM_ClearITPendingBit(TIM5, TIM_IT_CC4);
|
|
|
+ /* TIM ENABLE counter */
|
|
|
+ TIM_Cmd(TIM5, ENABLE);
|
|
|
+ /* ENABLE the CC3 and CC4 Interrupt Request */
|
|
|
+ TIM_ITConfig(TIM5, TIM_IT_CC3, ENABLE);
|
|
|
+ TIM_ITConfig(TIM5, TIM_IT_CC4, ENABLE);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ rt_kprintf("文件写入失败\r\n红外学习程序退出");
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ rt_thread_delay(1);
|
|
|
+ }//while( is_ok==1 )
|
|
|
+ }//for( i=0; i<6; i++)
|
|
|
+ close(fd);
|
|
|
+ rt_kprintf("\r\n学习完成,现在进入正常识别模式\r\n");
|
|
|
+ rem_mode = 2;
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+FINSH_FUNCTION_EXPORT(rem_study, rem_study);
|
wuyangyong