Problems using atmega328p without bootloader & hardware serial

hello!

I am trying to make a project using atmega328p progframmed directly via USBASP from arduino environment and using an E32-433t20d module as the radio. i am trying to use the hardware serial without any luck and also I have this weird thing going on that the AUX input pin that i declare shows 5V instead of 0, wich leads me to think that it is not declared as an input in the library maybe? or most likely, i am not passing the right arguments to the initializer function…

can someone point me in the right direction please? thank you so much!!

/*
* LoRa E32-TTL-100
* Set configuration.
* http://mischianti.org/lora-e32-device-for-arduino-esp32-or-esp8266-configuration-part-3/
*
* E32-TTL-100—– Arduino UNO
* M0 —– 3.3v
* M1 —– 3.3v
* TX —– PIN 2 (PullUP)
* RX —– PIN 3 (PullUP & Voltage divider)
* AUX —– Not connected
* VCC —– 3.3v/5v
* GND —– GND
*
*/
#include “Arduino.h”
#include “LoRa_E32.h”

LoRa_E32 e32ttl100(Serial, 2, 8, 9, 9600); // e32 TX e32 RX // Hardware serial, AUX pin, M0, M1, Baudrate
void printParameters(struct Configuration configuration);
void printModuleInformation(struct ModuleInformation moduleInformation);

void setup() {
//Serial.begin(9600);
delay(500);

// Startup all pins and UART
e32ttl100.begin();

ResponseStructContainer c;
c = e32ttl100.getConfiguration();
// It’s important get configuration pointer before all other operation
Configuration configuration = *(Configuration*) c.data;
c.status.getResponseDescription();

//printParameters(configuration);
configuration.ADDL = 0x0;
configuration.ADDH = 0x1;
configuration.CHAN = 0x19;

configuration.OPTION.fec = FEC_0_OFF;
configuration.OPTION.fixedTransmission = FT_TRANSPARENT_TRANSMISSION;
configuration.OPTION.ioDriveMode = IO_D_MODE_PUSH_PULLS_PULL_UPS;
configuration.OPTION.transmissionPower = POWER_17;
configuration.OPTION.wirelessWakeupTime = WAKE_UP_1250;

configuration.SPED.airDataRate = AIR_DATA_RATE_011_48;
configuration.SPED.uartBaudRate = UART_BPS_115200;
configuration.SPED.uartParity = MODE_00_8N1;

// Set configuration changed and set to not hold the configuration
ResponseStatus rs = e32ttl100.setConfiguration(configuration, WRITE_CFG_PWR_DWN_LOSE);
rs.getResponseDescription();
//printParameters(configuration);
c.close();
}

void loop() {

}