This Tutorial is based on https://controllerstech.com/send-and-receive-data-from-the-webserver-using-stm32

THANKS A LOT FOR SUCH A GREAT TUTORIAL

Here, we will switch 2 LEDs ON / OFF per WiFi

Circuit Diagram:

Needed HW:

• STM32F103C8T (Bluepill)
• ESP8266 Wifi
• USB-Uart to PC
• ST-Link V2

Short Overview:

• We use for UART Communication Uart_isr because we use ringbuffer
• We have a Server on STM32 which generates the Webpage

Configuration:

• UART3 goes to WiFI
• UART1 goe to PC
• For both UARTS we use ASYNCHONOUS and global Interrupt enable. Baudrate is set to 115200 Bauds

Functions:

• in "ESP8266_HAL.c" assign your uarts

• in "stm32f1xx_it.c" put isr routines ans comment standard IRQHandler

• in "main.c" function ESP_Init() is trying to access your WLAN-AP. You have to put here your W-Lan and Passwd

Checks:

• If everything works fine you should see in PC UART that we have an access point

• Open in the Browser the IP and you will see follwing screen