Serial port: To which kind of variable can I assing this SERIAL_8N1?(Solved)

Got any idea how to cut this to smaller? Ill go think about it in my nightmare... lol

	if (bit_parite == 0){

		if(longueur_donnees == 7){

			if (bit_arret == 0){}
			else if (bit_arret == 2){}

		}

		if(longueur_donnees == 8){

			if (bit_arret == 0){}
			else if (bit_arret == 2){}
		}

	}

	else if (bit_parite = 1){

		if(longueur_donnees == 7){
		
			if (bit_arret == 0){}
			else if (bit_arret == 2){}

		}

		if(longueur_donnees == 8){

			if (bit_arret == 0){}
			else if (bit_arret == 2){}

		}

	}

	else if (bit_parite = 2){

		if(longueur_donnees == 7){

			if (bit_arret == 0){}
			else if (bit_arret == 2){}

		}

		if(longueur_donnees == 8){

			if (bit_arret == 0){}
			else if (bit_arret == 2){}

		}

	}