Learn how to Program ESP8266 ESP-12E with Arduino using FTDI USB to TTL Cable. You just need to install the ESP8266 board and make the circuit as per the below-given instructions. Learn the basics and features of ESP8266 ESP-12E.
Step 1: Required Components
ESP-12E WiFi Module x 1
FTDI USB to TTL Serial Converter Cable x 1
Jumper Wires
Step 2: Circuit Time
Connect FTDI VCC to ESP8266 ESP-12E VCC and GPIO_2, RTS/CTS to CH_PD, DTR to GPIO_0, GND to GND and GPIO_15, TX to RX and RX to TX.
Step 3: Program ESP8266 ESP-12E
Make the circuit as per the above-given instructions. Connect the FTDI cable to the USB port. Select the proper board and programmer. Upload the code to ESP8266 ESP-12E.
Bootloader Modes of ESP-12E
Bootloader ModesThe bootloader can go into several modes depending on the state of GPIOs 0, 2 and 15. The two useful modes are the UART download mode (for flashing new firmware) and the flash startup mode (which boots from flash).
Flash Startup (Normal) GPIO0: 1 GPIO2: 1 GPIO15: 0
UART Download Mode (Programming) GPIO0: 0 GPIO2: 1 GPIO15: 0
SD-Card Boot GPIO0: 0 GPIO2: 0 GPIO15: 1
Learn basic information and uploading code using FTDI USB to TTL Cable.
Install ESP8266 boards to Arduino IDE.
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Why is reset pin not used? I thought the 8266 only went into programming mode at boot time? If it’s powered before you start to program wont this window have been missed?