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#include "rcc_bpc.h" #include "hwUart.h" #include "rtc.h" #define PULSE_WIDTH_20MS 160000 /* 20MS */ #define PULSE_WIDTH_30MS 240000 /* 30MS */ #define PULSE_WIDTH_35MS 280000 /* 35MS */ #define PULSE_WIDTH_40MS 320000 /* 40MS */ #define PULSE_WIDTH_45MS 360000 /* 55MS */ #define PULSE_WIDTH_80MS 640000 /* 80MS */ #define PULSE_WIDTH_60MS 480000 /* 80MS */ #define PULSE_WIDTH_100MS 800000 /* 100MS */ #define PULSE_WIDTH_500MS ((u4t)PULSE_WIDTH_100MS*5) #define PULSE_WIDTH_1SEC ((u4t)PULSE_WIDTH_100MS*10) /* 允许的偏差值 */ #define PULSE_WIDTH_ERROR_MORE PULSE_WIDTH_45MS #define PULSE_WIDTH_ERROR_LESS PULSE_WIDTH_35MS #define PULSE_WIDTH_ERROR_BYTE PULSE_WIDTH_40MS #define PULSE_WIDTH_1SEC_MAX ((u4t)PULSE_WIDTH_1SEC+PULSE_WIDTH_ERROR_LESS) #define PULSE_WIDTH_1SEC_MIN ((u4t)PULSE_WIDTH_1SEC-PULSE_WIDTH_ERROR_MORE) #define PULSE_WIDTH_100MS_MAX ((u4t)PULSE_WIDTH_100MS+PULSE_WIDTH_ERROR_LESS) /* '0' */ #define PULSE_WIDTH_100MS_MIN ((u4t)PULSE_WIDTH_100MS-PULSE_WIDTH_ERROR_MORE) #define PULSE_WIDTH_200MS_MAX ((u4t)PULSE_WIDTH_100MS*2+PULSE_WIDTH_ERROR_LESS) /* '1' */ #define PULSE_WIDTH_200MS_MIN ((u4t)PULSE_WIDTH_100MS*2-PULSE_WIDTH_ERROR_MORE) #define PULSE_WIDTH_300MS_MAX ((u4t)PULSE_WIDTH_100MS*3+PULSE_WIDTH_ERROR_LESS) /* '2' */ #define PULSE_WIDTH_300MS_MIN ((u4t)PULSE_WIDTH_100MS*3-PULSE_WIDTH_ERROR_MORE) #define PULSE_WIDTH_400MS_MAX ((u4t)PULSE_WIDTH_100MS*4+PULSE_WIDTH_ERROR_LESS) /* '3' */ #define PULSE_WIDTH_400MS_MIN ((u4t)PULSE_WIDTH_100MS*4-PULSE_WIDTH_ERROR_MORE) /* 秒与秒间隔1.6秒~1.9秒 */ #define PULSE_WIDTH_BIT_GAP_MAX ((u4t)PULSE_WIDTH_100MS*19+PULSE_WIDTH_ERROR_MORE) #define PULSE_WIDTH_BIT_GAP_MIN ((u4t)PULSE_WIDTH_100MS*16-PULSE_WIDTH_ERROR_LESS) /* 1秒的结束,每秒的后脉宽为:0.6秒~0.9秒 */ #define PULSE_WIDTH_BIT_LOW_MAX ((u4t)PULSE_WIDTH_100MS*9+PULSE_WIDTH_ERROR_MORE) #define PULSE_WIDTH_BIT_LOW_MIN ((u4t)PULSE_WIDTH_100MS*6-PULSE_WIDTH_ERROR_LESS) /* 秒周期 */ #define PULSE_WIDTH_BIT_MAX ((u4t)PULSE_WIDTH_1SEC+PULSE_WIDTH_ERROR_BYTE) #define PULSE_WIDTH_BIT_MIN ((u4t)PULSE_WIDTH_1SEC-PULSE_WIDTH_ERROR_BYTE) #define IDLE_LEVEL 0 #define VALID_LEVEL 1 #define FRAME_BIT_NUMBER 19 /* 19 double bit */ #define ENCODE_DATE_TIME(year,month,day,hour,minute,second) Encode_date_time(year,month,day,hour,minute,second) typedef enum { RCC_BPC_SYNC_BIT, RCC_BPC_CODE_WORD, }rcc_bpc_rx_status_en; typedef enum { CODE_WORD_STATUS_IDLE, CODE_WORD_STATUS_READY, }code_word_status_en; typedef struct { code_word_status_en status; u1t code_word[5]; }code_word_status_t; rcc_rtc_t rcc_rtc; static u4t _bpc_encode_date_time; static u1t _code_word[5]; static rcc_bpc_rx_status_en _rcc_bpc_rx_status; static code_word_status_t _code_word_status; static u1t _pulse_counter; /* 同时作为上一帧结束的标志 */ static u4t _pulse_total; /* 每秒的前脉宽 */ u1t err1; u1t err2; u1t err3; u1t err4; #if 1 static boolt Obtain_double_bit(u4t pulse_width) { u1t double_bit,byte_index; #if 1 /* 严格要求 */ if (pulse_width>PULSE_WIDTH_100MS_MIN && pulse_width<PULSE_WIDTH_100MS_MAX) { double_bit = 0; } else if (pulse_width>PULSE_WIDTH_200MS_MIN && pulse_width<PULSE_WIDTH_200MS_MAX) { double_bit = 1; } else if (pulse_width>PULSE_WIDTH_300MS_MIN && pulse_width<PULSE_WIDTH_300MS_MAX) { double_bit = 2; } else if (pulse_width>PULSE_WIDTH_400MS_MIN && pulse_width<PULSE_WIDTH_400MS_MAX) { double_bit = 3; } #else /* 增强接收能力 */ if (pulse_width<PULSE_WIDTH_100MS+PULSE_WIDTH_50MS) { double_bit = 0; } else if (pulse_width<PULSE_WIDTH_100MS*2+PULSE_WIDTH_50MS) { double_bit = 1; } else if (pulse_width<PULSE_WIDTH_100MS*3+PULSE_WIDTH_50MS) { double_bit = 2; } else if (pulse_width<PULSE_WIDTH_100MS*4+PULSE_WIDTH_50MS) { double_bit = 3; } #endif else { return(FALSE); } byte_index = ((FRAME_BIT_NUMBER-1)-_pulse_counter)/4; _code_word[byte_index] <<= 2; _code_word[byte_index] |= double_bit; return (TRUE); } /* wave_level现在所处的电平 */ void Bpc_pulse(u4t pulse_width, wave_level_en wave_level) { u4t wave_width; o_led = wave_level; /* 秒与秒间隔1.6秒~1.9秒 */ if (wave_level==IDLE_LEVEL && (pulse_width>PULSE_WIDTH_BIT_GAP_MIN && pulse_width<PULSE_WIDTH_BIT_GAP_MAX)) { /* 上一帧数据的结束在这里处理 */ if (_pulse_counter==(FRAME_BIT_NUMBER-1)) { if (Obtain_double_bit(_pulse_total)==TRUE) { memcpy(_code_word_status.code_word, _code_word, 5); _code_word_status.status = CODE_WORD_STATUS_READY; } } /* 新周期的开始(20秒一个周期) */ _pulse_counter = 0; _pulse_total = 0; _rcc_bpc_rx_status = RCC_BPC_CODE_WORD; return; } if (_rcc_bpc_rx_status == RCC_BPC_CODE_WORD) { /* 1秒的结束,每秒的后脉宽度为:0.6秒~0.9秒 */ if (wave_level==IDLE_LEVEL && (pulse_width>PULSE_WIDTH_BIT_LOW_MIN && pulse_width<PULSE_WIDTH_BIT_LOW_MAX)) { wave_width = _pulse_total + pulse_width; if (wave_width>PULSE_WIDTH_BIT_MAX || wave_width<PULSE_WIDTH_BIT_MIN) { _pulse_counter = 0; _rcc_bpc_rx_status = RCC_BPC_SYNC_BIT; if (err1<99) { ++err1; } return; } if (Obtain_double_bit(_pulse_total)==FALSE) { _pulse_counter = 0; _rcc_bpc_rx_status = RCC_BPC_SYNC_BIT; if (err2<99) { ++err2; } return; } ++_pulse_counter; if (_pulse_counter>(FRAME_BIT_NUMBER-1)) { _pulse_counter = 0; _rcc_bpc_rx_status = RCC_BPC_SYNC_BIT; return; } _pulse_total = 0; } else { /* 有效电平脉宽(受干扰脉冲群处理为有效脉宽) */ _pulse_total += pulse_width; } } } #else static u2t _pulse_previous; /* wave_level脉冲状态,比如高电平脉冲的话现在处于低电平 */ void Bpc_pulse(u4t pulse_width, wave_level_en wave_level) { u4t wave_width; u1t double_bit, byte_index; /* 秒与秒间隔1.6秒~1.9秒 */ o_led = wave_level; if (wave_level==IDLE_LEVEL && (pulse_width>PULSE_WIDTH_BIT_GAP_MIN && pulse_width<PULSE_WIDTH_BIT_GAP_MAX)) { _pulse_counter = 0; _rcc_bpc_rx_status = RCC_BPC_CODE_WORD; return; } if (_rcc_bpc_rx_status == RCC_BPC_CODE_WORD) { /* 每秒的前脉宽 */ if (wave_level == VALID_LEVEL) { _pulse_previous = pulse_width; if (pulse_width>PULSE_WIDTH_100MS_MIN && pulse_width<PULSE_WIDTH_100MS_MAX) { double_bit = 0; } else if (pulse_width>PULSE_WIDTH_200MS_MIN && pulse_width<PULSE_WIDTH_200MS_MAX) { double_bit = 1; } else if (pulse_width>PULSE_WIDTH_300MS_MIN && pulse_width<PULSE_WIDTH_300MS_MAX) { double_bit = 2; } else if (pulse_width>PULSE_WIDTH_400MS_MIN && pulse_width<PULSE_WIDTH_400MS_MAX) { double_bit = 3; } else { _rcc_bpc_rx_status = RCC_BPC_SYNC_BIT; return; } byte_index = ((FRAME_BIT_NUMBER-1)-_pulse_counter)/4; _code_word[byte_index] <<= 2; _code_word[byte_index] |= double_bit; ++_pulse_counter; if (_pulse_counter==19) { memcpy(_code_word_status.code_word, _code_word, 5); _code_word_status.status = CODE_WORD_STATUS_READY; _rcc_bpc_rx_status = RCC_BPC_SYNC_BIT;