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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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8
cores/esp8266/core_esp8266_waveform.c
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@ -79,7 +79,13 @@ static Waveform waveform[] = {
{0, 0, 1<<3, 0, 0, 0, 0, 0},
{0, 0, 1<<4, 0, 0, 0, 0, 0},
{0, 0, 1<<5, 0, 0, 0, 0, 0},
// GPIOS 6-11 not allowed, used for flash
// GPIOS 6-8 not allowed, used for flash
// GPIO 9 and 10 only allowed in 2-bit flash mode
#if !isFlashInterfacePin(9)
{0, 0, 1<<9, 0, 0, 0, 0, 0},
{0, 0, 1<<10, 0, 0, 0, 0, 0},
#endif
// GPIO 11 not allowed, used for flash
{0, 0, 1<<12, 0, 0, 0, 0, 0},
{0, 0, 1<<13, 0, 0, 0, 0, 0},
{0, 0, 1<<14, 0, 0, 0, 0, 0},