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Add ESP32 touch sensors as button alternative (#1190)

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* Add touch option to button handler

* Check if touch is pressed in setup

* Add TOUCHPIN build env and override example

Co-authored-by: Aircoookie <dev.aircoookie@gmail.com>
This commit is contained in:
Jake 2020-09-20 16:12:46 +02:00 committed by GitHub
parent 1313a44ba3
commit a3e1af72ab
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GPG Key ID: 4AEE18F83AFDEB23
6 changed files with 29 additions and 6 deletions
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8
platformio.ini
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@ -334,6 +334,14 @@ lib_ignore =
ESPAsyncTCP ESPAsyncTCP
ESPAsyncUDP ESPAsyncUDP
[env:custom32_TOUCHPIN_T0]
board = esp32dev
platform = espressif32@1.12.4
build_flags = ${common.build_flags_esp32} -D TOUCHPIN=T0
lib_ignore =
ESPAsyncTCP
ESPAsyncUDP
[env:wemos_shield_esp32] [env:wemos_shield_esp32]
board = esp32dev board = esp32dev
platform = espressif32@1.12.4 platform = espressif32@1.12.4

1
platformio_override.ini.example
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@ -21,6 +21,7 @@ build_flags = ${common.build_flags_esp8266}
; PIN defines - uncomment and change, if needed: ; PIN defines - uncomment and change, if needed:
; -D LEDPIN=2 ; -D LEDPIN=2
; -D BTNPIN=0 ; -D BTNPIN=0
; -D TOUCHPIN=T0
; -D IR_PIN=4 ; -D IR_PIN=4
; -D RLYPIN=12 ; -D RLYPIN=12
; -D RLYMDE=1 ; -D RLYMDE=1

17
wled00/button.cpp
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@ -15,13 +15,24 @@ void shortPressAction()
} }
} }
bool isButtonPressed()
{
#ifdef BTNPIN
if (digitalRead(BTNPIN) == LOW) return true;
#endif
#ifdef TOUCHPIN
if (touchRead(TOUCHPIN) <= TOUCH_THRESHOLD) return true;
#endif
return false;
}
void handleButton() void handleButton()
{ {
#ifdef BTNPIN #if defined(BTNPIN) || defined(TOUCHPIN)
if (!buttonEnabled) return; if (!buttonEnabled) return;
if (digitalRead(BTNPIN) == LOW) //pressed if (isButtonPressed()) //pressed
{ {
if (!buttonPressedBefore) buttonPressedTime = millis(); if (!buttonPressedBefore) buttonPressedTime = millis();
buttonPressedBefore = true; buttonPressedBefore = true;
@ -37,7 +48,7 @@ void handleButton()
} }
} }
} }
else if (digitalRead(BTNPIN) == HIGH && buttonPressedBefore) //released else if (!isButtonPressed() && buttonPressedBefore) //released
{ {
long dur = millis() - buttonPressedTime; long dur = millis() - buttonPressedTime;
if (dur < 50) {buttonPressedBefore = false; return;} //too short "press", debounce if (dur < 50) {buttonPressedBefore = false; return;} //too short "press", debounce

2
wled00/const.h
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@ -126,6 +126,8 @@
#define ABL_MILLIAMPS_DEFAULT 850; // auto lower brightness to stay close to milliampere limit #define ABL_MILLIAMPS_DEFAULT 850; // auto lower brightness to stay close to milliampere limit
#define TOUCH_THRESHOLD 32 // limit to recognize a touch, higher value means more sensitive
// Size of buffer for API JSON object (increase for more segments) // Size of buffer for API JSON object (increase for more segments)
#ifdef ESP8266 #ifdef ESP8266
#define JSON_BUFFER_SIZE 9216 #define JSON_BUFFER_SIZE 9216

1
wled00/fcn_declare.h
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@ -21,6 +21,7 @@ void updateBlynk();
//button.cpp //button.cpp
void shortPressAction(); void shortPressAction();
bool isButtonPressed();
void handleButton(); void handleButton();
void handleIO(); void handleIO();

4
wled00/wled.cpp
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@ -250,8 +250,8 @@ void WLED::beginStrip()
#endif #endif
// disable button if it is "pressed" unintentionally // disable button if it is "pressed" unintentionally
#ifdef BTNPIN #if defined(BTNPIN) || defined(TOUCHPIN)
if (digitalRead(BTNPIN) == LOW) if (isButtonPressed())
buttonEnabled = false; buttonEnabled = false;
#else #else
buttonEnabled = false; buttonEnabled = false;