Antarmuka Mikrokontroller IoT (ESP32) Dengan USB Host max3421e

Abstract

Electronic equipment made using old technology or electronic equipment in the entry-level category has not been supported by networking equipment, so for the data communication process, the microcontroller requires interfacing facilities that are in accordance with the electronic equipment used, such as a USB port. With the microcontroller that supports IoT, it allows electronic equipment to communicate over the network. An IoT microcontroller such as the ESP32 is equipped with a WiFi feature but is not equipped with a USB controller feature, while the USB Host max3421e supports the communication process using SPI, so that those two microcontrollers can be used to form an interface using the SPI bus. This interface can be applied to electronic equipment with old technology and entry level electronic equipment for wireless communication. For the needs of making an interface between the ESP32 and max3421e, a software was developed by analyzing the SPI features of the ESP32 and the USB protocol according to the USB device state diagram. The results obtained are the handshake process between systems developed with USB devices in the Low-Speed ​​and Full-Speed ​​categories such as printers, flashdisk, bluetooth mouse and external hard disk, and the device descriptor data of each device tested can be read properly.

IoT Microcontroller Application Prototype as Data Transceiver from Network to USB Device

“…The block diagram of the system carried out is shown in Figure 1: Figure 1 describes the block diagram of the system as a whole including the research that has been done [5] (blue box). This ongoing research is only limited to data communication from a computer or smartphone to a USB Host max3421e (green box).…”

“…The existing solution begins with the creation of an IoT microcontroller interface prototype (ESP32) with a USB Host max3421e by utilizing the SPI protocol that has been implemented. It was found that the IoT microcontroller (ESP32) and USB Host max3421e can communicate well and are able to recognize USB devices completely as well as USB devices connected to computers [5]. By utilizing the existing WiFi facilities on the IoT microcontroller (ESP32) [6], it is hoped that the prototype will not only be able to recognize a connected USB device, but also function as a data processor and sender from a computer or smartphone.…”

“…The development carried out from research [5] is to build an interface between the ESP32 microcontroller and the OLED Display to display the status of the equipment [7] and setting the ESP32 microcontroller data reception as a Wifi Station [8]. The setting in question is connecting to the network through the existing Access Point (AP) so that the ESP32 microcontroller can receive data from the Wifi network.…”

Telecontrolling pada Kandang Jangkrik Berbasis IoT (Internet of Things)

“…Pada skripsi ini akan dirancang sebuah sistem yang menggunakan inputan dari sensor DHT22. DHT22 diklaim memiliki kualitas pambacaan yang baik, dinilai dari respon proses akuisisi data yang cepat dan ukurannya yg minimalis, serta dengan harga yang relatif murah jika dibandingkan dengan alat thermohygromoeter [4] dan RTC dapat menyimpan data waktu secara real time [5]- [7] melalui proses hitung waktu dilakukan output datanya langsung disimpan atau bisa dikirim ke device lain melalui sistem I2C [8]- [11], untuk membaca waktu dari kandang agar bisa mengetahui waktu panen jangkrik. Data dari inputannya akan diolah oleh ESP32 yang berupa System on Chip dengan Wi-Fi dan Bluetooth [12]- [16].…”