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ESP32 MCU learning notes - 02 - Software IIC & hardware SPI Preface, continue the content of the previous article. In order not to accumulate too much content, write it separately. 1, ESP32 read gyroscope (IIC) Official routine: github:esp-idf/examples/peripherals/i2c/i2c_self_test/ iic is the official software used by iic before ...

1, First, create a product and a device on OneNet 1. Create MQTT products Step 1: Step 2: Step 3: After clicking OK: 2. Add device to product Step 1: Step 2: Step 3: after creation, you can view the ID and Key of the device. 3. Create data flow for device Step 1: Step 2: Step 3: 2, Test MQTT using MQTT software provided by ...

1, The library we use 1. Brief introduction to Library Library Download Link(github) TFT_eSPI TFT_eSPI supports various commonly used driver chips, such as ST7735, ST7789, ILI9341, etc., with good compatibility 2. About library installation The first way is to search for TFTs in Arduino's library manager_ ESPI, and then click Install ...

First official account [learning embedded] preface I happened to see the esp32 development board that has eaten ash for many years. First blow the dust on the board, then find a USB cable and connect it to the computer. The light is on. Well, it works. This board was bought in 2018. I haven't played this board for more than three years. I don ...

TCP protocol stack ESP uses lwIP as embedded TCP/IP protocol stack support lwIP is a set of IP protocol stack implemented in C at MCU level, which can run on bare metal / RTOS / Embedded Linux. Lexin provides relevant porting packages for ESP32 For relevant contents, please refer to LwIP library functions, which are supported in LwIP and ESP ...

1, Background 1.1 Low Power Bluetooth (BLE) protocol stack The link layer (LL) controls the RF state of the equipment, which has five equipment states: standby, broadcast, scanning, initialization and connection. The broadcast is a broadcast packet, while the scan is to monitor the broadcast. In GAP communication, the central device (Centr ...

0. Write in front The main purpose of this article is to describe how to make the ESP32 chip run JavaScript and let the web front-end developers play with the hardware. The author was a web front-end development engineer before, so the article will try to stand in the perspective of Web front-end development engineer, put aside the underlyin ...