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<div class="moz-cite-prefix">Thanks for all of your replies.<br>
<br>
Module is actually a nodeMCU (with ESP12e).<br>
<br>
-Mark<br>
<br>
On 19/09/2016 12:48 PM, Geoff wrote:<br>
</div>
<blockquote
cite="mid:CAGgbuXtfje45yMwUHn9X1TubGuQyZ93=rrJWZK1ve091RjWMvw@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>
<div>I tried the arduino addon the other day but was crashing
on me. (The esp was reporting an illegal instruction and
then rebooting)<br>
<br>
</div>
If you're having issues programming it at all, check your
wiring. When I first got my hands on an ESP module, I spent ~3
hours trying to program the thing, only to discover the issue
was a dry joint on the breakout board I'd made. I've also
found it more reliable to hook the boot pins to vcc or gnd
directly. 1k resistor was being unreliable in my early
testing.<br>
</div>
<div>Remember that when you boot the module there are different
boot modes. To flash it, GPIO 0 should be low when the power
is applied. To boot it GPIO 0 should be high. GPIO15 should be
low and GPIO2 high for both. I tend to leave GPIO15 floating,
but tie GPIO2 directly to GND. Even a 1K pulldown was
unreliable in some of my testing.<br>
</div>
<div><br>
</div>
On a side note, the <a moz-do-not-send="true"
href="https://en.wikipedia.org/wiki/ESP32">ESP32 </a>is
becoming available <a moz-do-not-send="true"
href="http://www.electrodragon.com/esp32-information/">soon</a>.
It's the ESP8266's bigger brother with more RAM, hardware PWM,
many ADC pins, two DAC's, and even bluetooth!<br>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Mon, Sep 19, 2016 at 10:54 AM,
Richard Jones <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:richard.jones.1952@gmail.com" target="_blank">richard.jones.1952@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">
<div>
<div>
<div>I have a web server / hotspot with a graphical
web log and oled display up and running on an
ESP8266. I took an off the shelf project and adapted
it to accept parameters through the serial port from
an Arduino. Its been a while, I recall that as
Hamster said, once you have the io lines in the
appropriate state for programming everything else
falls into place. What is the problem?<br>
<br>
</div>
Here is link to the reference project :<br>
<br>
<a moz-do-not-send="true"
href="https://harizanov.com/2014/12/wifi-iot-3-channel-relay-board-with-mqtt-and-http-api-using-esp8266/"
target="_blank">https://harizanov.com/2014/12/<wbr>wifi-iot-3-channel-relay-<wbr>board-with-mqtt-and-http-api-<wbr>using-esp8266/</a><br>
<br>
</div>
When I resurrect this project in a few days time I'm
expecting hideous problems with the tool chain having
moved on.<br>
<br>
</div>
Richard<br>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Mon, Sep 19, 2016 at 8:55
AM, hamster <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:hamster@snap.net.nz" target="_blank">hamster@snap.net.nz</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<p> </p>
<p>On 19.09.2016 08:39, Mark Atherton wrote:</p>
<blockquote type="cite"
style="padding-left:5px;border-left:#1010ff 2px
solid;margin-left:5px;width:100%">
<pre>Hello All,
Anyone have any experience running compiled C on an ESP8266 ?
</pre>
</blockquote>
<p>I have in the recent past been programming them
in C using the Arduino Addon as per <a
moz-do-not-send="true"
href="https://learn.sparkfun.com/tutorials/esp8266-thing-hookup-guide/installing-the-esp8266-arduino-addon"
target="_blank">https://learn.sparkfun.com<wbr>/tutorials/esp8266-thing-hooku<wbr>p-guide/installing-the-esp8266<wbr>-arduino-addon</a></p>
<p>For me the problem was finding the jumper
settings that allowed the board to accept and
then boot the firmware, I had to pull one DIO
pin high for the 'sketch' to run.</p>
<p> </p>
<div> </div>
</div>
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