Mirrors/esp-link
2
0
Fork 0
mirror of https://github.com/jeelabs/esp-link.git synced 2026-03-13 04:36:47 +01:00
Code Issues Packages Projects Releases Wiki Activity

readme tweaks

Browse Source
This commit is contained in:
Thorsten von Eicken
2015-05-22 23:34:44 -07:00
parent bac527a196
commit 2e52eaa0e8
1 changed files with 20 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
README.md
View File

@@ -77,7 +77,7 @@ You should then see a list of detected networks on the web page and you can sele
yours. Enter a password if your network is secure (recommended...) and hit the connect button.
You should now see that the esp-link has connected to your network and it should show you
its IP address. _Write it down_ (due to a bug ou won't see it anymore after this) and then
its IP address. _Write it down_ (due to a bug you won't see it anymore after this) and then
follow the provided link (you will have to switch your
laptop, phone, or tablet back to your network before you can actually connect).
@@ -101,7 +101,7 @@ If you choose a different directory structure look at the Makefile for the appro
variables to define. (I have not used the esptool for flashing, so I don't know whether what's
in the Makefile for that works or not.)
In order to OTA-update the esp8266 you should "export ESP_HOSTNAME=..." with the hostname or
In order to OTA-update the esp8266 you should `export ESP_HOSTNAME=...` with the hostname or
IP address of your module.
This project makes use of heatshrink, which is a git submodule. To fetch the code:
@@ -142,3 +142,21 @@ Serial bridge and connections to Arduino, AVR, ARM, LPC microcontrollers
In order to connect through the esp-link to a microcontroller use port 23. For example,
on linux you can use `nc esp-hostname 23` or `telnet esp-hostname 23`.
You can reprogram an Arduino / AVR microcontroller by pointing avrdude at port 23. Instead of
specifying a serial port of the form /dev/ttyUSB0 use `net:esp-hostname:23` (where `esp-hostname`
is either the hostname of your esp-link or its IP address). The esp-link detects that avrdude
starts its connection with a flash synchronization sequence and sends a reset to the AVR
microcontroller so it can switch into flash programming mode.
You can reprogram NXP's LPC800-series ARM processors as well by pointing your programmer
similarly at the esp-link's port 23. For example, if you are using
https://github.com/jeelabs/embello/tree/master/tools/uploader a command line like
`uploader -s -w esp-link:23 build/firmware.bin` should do the trick.
The way it works is that esp-link detects that the uploader starts its connection with the
flash synchronization sequence `?\r\n` and issues the appropriate "ISP" and reset sequence
to the microcontroller to start the flash programming.
Note that multiple connections to port 23 can be made simultaneously. The esp-link will
intermix characters received on all these connections onto the serial TX and it will
broadcast incoming characters from the serial RX to all connections. Use with caution...