7 level inverter USING 2 BATTERY and 2 H-BRIDGES

circuit (7 level)

WAVE FORMS

PROGRAM (COMPILER – MIKRO C)

//crystal of 16 MHz
#define s1   LATE.F0      //S1
#define s2   LATE.F1      //S2
#define s3   LATE.F2      //S3
#define s4   LATE.F3      //S4
#define s5   LATE.F4      //S3
#define s6   LATE.F5      //S4
#define s7   LATD.F0      //S4
#define s8   LATD.F1      //S4
void delay(void);
void zero_level(void);
void second_level(void);
void third_level(void);
void fourth_level(void);
void second_negative_level(void);
void third_negative_level(void);
void fourth_negative_level(void);
void off_all_switch(void);
void second_half_cycle(void);
void first_half_cycle(void);
void main()
{
    TRISE.F0=0;TRISE.F1=0;TRISE.F2=0;TRISE.F3=0;
    TRISE.F4=0;TRISE.F5=0; TRISD.F0=0; TRISD.F1=0;
    off_all_switch();
    while (1)
    {
        first_half_cycle();
        second_half_cycle();
    }
}
void first_half_cycle(void)
{
    zero_level();    off_all_switch();
    second_level();  off_all_switch();
    third_level();   off_all_switch();
    fourth_level();  off_all_switch();
    third_level();   off_all_switch();
    second_level();  off_all_switch();
    zero_level();    off_all_switch();
}
void second_half_cycle(void)
{
    zero_level();            off_all_switch();
    second_negative_level();off_all_switch();
    third_negative_level(); off_all_switch();
    fourth_negative_level();off_all_switch();
    third_negative_level(); off_all_switch();
    second_negative_level();off_all_switch();
    zero_level();            off_all_switch();
}
void delay(void)
{
    delay_us(1200);
}
void zero_level(void)   //0v
{
    s1=0;s2=0;s3=0;s4=0;
    s5=0;s6=0;s7=0;s8=0;delay();
}
void second_level(void) //v1
{
    s1=0;s2=1;s3=0;s4=1;
    s5=1;s6=0;s7=0;s8=1;delay();
}
void third_level(void) //v2
{
    s1=1;s2=0;s3=0;s4=1;
    s5=0;s6=1;s7=0;s8=1;delay();
}
void fourth_level(void) //v1+v2
{
    s1=1;s2=0;s3=0;s4=1;
    s5=1;s6=0;s7=0;s8=1;delay(); delay();
}
void second_negative_level(void) //v1
{
    s1=0;s2=1;s3=0;s4=1;
    s5=0;s6=1;s7=1;s8=0;delay();
}
void third_negative_level(void) //v2
{
    s1=0;s2=1;s3=1;s4=0;
    s5=0;s6=1;s7=0;s8=1;delay();
}
void fourth_negative_level(void) //v1+v2
{
    s1=0;s2=1;s3=1;s4=0;
    s5=0;s6=1;s7=1;s8=0; delay(); delay();
}
void off_all_switch(void)
{
    s1=0;s2=0;s3=0;s4=0;s5=0;s6=0;s7=0;s8=0;
}