- #Esp8266 firmware for at commands serial
- #Esp8266 firmware for at commands update
- #Esp8266 firmware for at commands download
Note that the progress pane indicated "Failed to leave flash mode". The progress was displayed in the lower pane of the window and, after about a minute, the reprogramming was done.
#Esp8266 firmware for at commands download
Clicking on the Download button started the reprogramming of the flash chip.
#Esp8266 firmware for at commands serial
In the flashing tool, I changed the serial port from COM1 to COM6 because that's where the CH232HM cable resides on my system. PROG and RESET pushbuttons are provided to momentarily pull the GPIO0 and reset pins input to ground, respectively.Īfter inserting my ESP8266 board into the programming board and attaching the C232HM cable, I entered the flash programming mode by holding down the PROG button and then pressing and releasing the RESET button. A couple of 2.2 KOhm pullup resistors for the chip-select and reset pins keep the ESP8266 enabled. It has a 4 × 2 socket for the ESP8266 board that is wired to a header where my C232HM USB-to-serial cable is attached.
I could do this with a few wires and a breadboard but, since I might be doing this more than once, I decided to build a little programming board. This is done by resetting the ESP8266 board while holding its GPIO0 pin low. Next I needed to put the ESP8266 into its flash programming mode. Selecting the v0.9.2.2 AT Firmware.bin file and clicking Open took me back to the main window with the firmware file displayed in the Bin field. I also downloaded the v0.9.2.2 AT Firmware.bin file.Īfter dumping the contents of both archives into a local directory, I had this:ĭouble-clicking the esp8266_flasher.exe icon brought up the flashing tool:Ĭlicking the Bin button opened a window where I selected the binary file to download into the serial flash of the board: I didn't want to brick my modules, even if they only cost $2.71/each.įinally, I settled on using the Espressif's official esp8266_flasher.exe program. But the downloadable archives don't usually have four files in them, and if they do, they don't have filenames matching the ones shown in the examples. Some tools require specifying four different binary files, one for each particular address range of the flash chip. Part of the confusion is that there are a lot of different programming tools being used: binary executables, Python scripts, whatever. Note #2: Here's a newer post about building the hardware and reprogramming an ESP-201 module using the Arduino IDE. Note #1: If you would rather watch than read, there is a video at the end of this post that goes through the flash reprogramming process. Since everyone is compiling new applications for the Espressif chip now, merely reprogramming the serial flash on the board should be easy, right? Just download a binary file and you're done! It turned out to be a bit more confusing.
#Esp8266 firmware for at commands update
I thought I would update the firmware on the ESP8266 to the latest version and see if it still worked. It's been a while since I connected my ESP8266 board to a ZPUino soft processor running in a XuLA2 board.