手机开机预充电

时间：2010-09-26 来源：xxha000721

if voltage >3.75V ,and has charger,then charge to 3.9v
if voltage >3.75V ,and has no charger ,then power up、
if voltage <3.75V ,and has charger, then charge to 3.9V
if voltage <3.75V ,and has no charger, then power down

void PrechargeCheck()
{
        int avg_voltage = 0;
        int counts = 0;
    int i, j;
        UINT8_T val;
        printf(NULL, "TAHITI prcharge enable.");

        avg_voltage = Get_Voltage();

        if(avg_voltage < 3750){
                if ( Detect_charging() ){
                        printf (NULL, "Charger is inserted !");
                        precharge_init();
                }
                else{
                        AddMessage((UINT8_T*) ("voltage is less than 3.5 and do not has charger .\0"));
                        do_powerdown();
                }
        }
        else {
                if ( Detect_charging() ){
                        printf (NULL, "Charger is inserted !");
                        precharge_init();
                }
                else{
                        AddMessage((UINT8_T*) ("no charger ,power up .\0"));
                        return;
                }
        }

        do{
                avg_voltage = Get_Voltage();

                if ( Detect_charging() == 0 ){
                        do_powerdown();
                }

        printf(NULL, "voltage = %d. ", avg_voltage );
        for(i = 0; i < 5 ; i++){
            for(j = 0; j < 1000; j++){
                Delay(1000);
            }
        }

    }while( avg_voltage < 3900 );

    precharge_off();

}