NEC单片机C 程序实例(充电器)

/*This guy very faineant*/ /*===========================================================*/ #pragma sfr #pragma di #pragma ei #pragma interrupt INTTM000 MD_INTTM000 /*===========================================================*/ unsigned int batt_voltage=0; unsigned int max_batt_voltage=0; unsigned char time_100ms=0; unsigned char time_s=0; unsigned char time_m=0; unsigned char time_h=0; unsigned int minus_vol=0; /*===========================================================*/ static bit batt_full_f; static bit time_s_f; static bit time_m_f; static bit time_h_f; static bit max_charge_time_f; /*===========================================================*/ #define TM_TM00_CLOCK 0x2 #define TM_TM00_INTERVALVALUE 0xc34 #define ClrIORBit(Reg, ClrBitMap) Reg &= ~ClrBitMap #define SetIORBit(Reg, SetBitMap) Reg |= SetBitMap /*===========================================================*/ #define BATT_FULL_VOLTAGE 585 #define START_CHARGE_VOLTAGE 410 #define START_MINUS_VOLTAGE 495 #define MINUS_VOLTAGE 10 #define MAX_CHARGE_TIME_H 1 #define MAX_CHARGE_TIME_M 15 /*===========================================================*/ __interrupt void MD_INTTM000( ) { if(++time_100ms >= 10) { time_100ms = 0; time_s_f = 1; if(++time_s >= 60) { time_s = 0; time_m_f = 1; if(++time_m >= 60) { time_m = 0; time_h_f = 1; ++time_h; } } } } /*===========================================================*/ void Clock_Init( void ) { SetIORBit(LSRCM, 0x01); ClrIORBit(PPCC, 0x03); ClrIORBit(PCC, 0x02); } /*===========================================================*/ void TM00_Init( void ) { TMC00 = 0x00; SetIORBit(MK0, 0x20); SetIORBit(MK0, 0x40); ClrIORBit(IF0, 0x20); ClrIORBit(IF0, 0x40); PRM00 |= TM_TM00_CLOCK; ClrIORBit(CRC00, 0x01); CR000 = TM_TM00_INTERVALVALUE; CR010 = 0xffff; } /*===========================================================*/ void work_Init( void ) { batt_full_f=0; time_s_f=0; time_m_f=0; time_h_f=0; P4.0=1; P4.3=1; } /*===========================================================*/ void delay() { int i; for(i=0;i<10000;i++); } /*===========================================================*/ void TM00_Start( void ) { ClrIORBit(MK0, 0x20); TMC00 = 0x0c; } /*===========================================================*/ unsigned int ADC_conversion( unsigned char channel) { unsigned int batt_vol=0; unsigned int batt_vol_or=0; unsigned char sample_counter=0; do { ADS=channel; ADCE=1; ADCS=1; while(!ADIF) batt_vol=ADCR; batt_vol_or += batt_vol; ADCS=0; ADIF=0; ++sample_counter; } while(sample_counter < 50); batt_vol = batt_vol_or/50; return batt_vol; } /*===========================================================*/ void main() { LSRSTOP=1; PM4.3=0; PM4.0=0; Clock_Init(); TM00_Init(); TM00_Start(); work_Init(); EI(); delay(); delay(); delay(); delay(); delay(); delay(); delay(); batt_voltage = ADC_conversion(0); /*===========================================================*/ while(1) { if(time_m_f ==1) { time_m_f =0; P4.0=1; delay(); delay(); batt_voltage = ADC_conversion(0); } if(batt_voltage >= START_MINUS_VOLTAGE) { if(batt_voltage >= max_batt_voltage) { max_batt_voltage = batt_voltage; } else { minus_vol = max_batt_voltage - batt_voltage; if(minus_vol > MINUS_VOLTAGE) { batt_full_f = 1; } } } else { max_batt_voltage = batt_voltage; } /*===========================================================*/ if((time_h == MAX_CHARGE_TIME_H)&(time_m >= MAX_CHARGE_TIME_M)) { batt_full_f = 1; } /*===========================================================*/ if(batt_full_f == 1) { P4.0=1; P4.3=1; if(batt_voltage <= START_CHARGE_VOLTAGE) { batt_full_f = 0; } } else { P4.0=0; switch(time_100ms) { case 5: P4.3=1;break; case 0: P4.3=0;break; default:; } if(batt_voltage >= BATT_FULL_VOLTAGE) { batt_full_f = 1; } } } } /*===========================================================*/