void discharging_USB() {
SSD1306_ClearDisplay();
cursor(starting_row);
SSD1306_GotoXY(starting_col, starting_row);
SSD1306_PutC("1. 5V 1A");
delay_ms(10);
start_row = starting_row;
start_row +=1;
SSD1306_GotoXY(starting_col, start_row);
SSD1306_PutC("2. 5V 2A");
delay_ms(10);
start_row +=1;
SSD1306_GotoXY(starting_col, start_row);
SSD1306_PutC("3. 5V 3A");
delay_ms(10);
start_row +=1;
SSD1306_GotoXY(starting_col, start_row);
SSD1306_PutC("4. Back");
delay_ms(100);
if (m2==1 && row_Ind == 1 && button_select==0){
m2++;
if( m2==2 && row_Ind ==1)
{
output_low(PIN_B0);
output_low(PIN_B1);
output_high(PIN_B2);
button_select==1;
}
else if (m2==2 && row_Ind ==2){
output_high(PIN_B0);
output_low(PIN_B1);
output_low(PIN_B2);
button_select==1;
}
else if (m2==3 && row_Ind ==3){
output_high(PIN_B0);
output_low(PIN_B1);
output_low(PIN_B2);
button_select==1;
}
else
{
output_low(PIN_B0);
output_low(PIN_B1);
output_high(PIN_B2);
button_select==1;
}
}
}