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Allow GPIO 9 and 10 for waveform generation (#5055)

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* Allow GPIO 9 and 10 for waveform generation

While most ESP8266 modules use quad-io mode for their SPI flash ROM,
there are some which only use dual-io mode.  Allow the unused pins
(GPIO 9 and 10) to have waveforms generated on them.  Should the user try
this on a quad-io mode board, expect very bad things to happen.

* Add variant for 8285 to init GPIO 9/10

The 8285 only has 2-bit flash IO, so the other two pins can be used as
inputs (9/10).  Set them to input to mirror the way other pins are set
up.

* Update waveform gen to only allow 9/10 on 8285

Update the common.h in both generic (remove TODO, it's done!) and the
8285 variant to make isFlashInterfacePin macro correct.  Use that macro
to disable pins 9 and 10 in the common, non-8285 case.
This commit is contained in:
Earle F. Philhower, III
2018-09-17 18:58:06 -07:00
committed by Develo
parent cd43337f4f
commit bc2d4ec18b
7 changed files with 143 additions and 3 deletions
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41
variants/esp8285/pins_arduino.h Normal file
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/*
pins_arduino.h - Pin definition functions for Arduino
Part of Arduino - http://www.arduino.cc/
Copyright (c) 2007 David A. Mellis
Modified for ESP8266 platform by Ivan Grokhotkov, 2014-2015.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General
Public License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330,
Boston, MA 02111-1307 USA
$Id: wiring.h 249 2007-02-03 16:52:51Z mellis $
*/
#ifndef Pins_Arduino_h
#define Pins_Arduino_h
#define PIN_WIRE_SDA (4)
#define PIN_WIRE_SCL (5)
static const uint8_t SDA = PIN_WIRE_SDA;
static const uint8_t SCL = PIN_WIRE_SCL;
#ifndef LED_BUILTIN
#define LED_BUILTIN 1
#endif
#include "common.h"
#endif /* Pins_Arduino_h */