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mhsw-espurna/code/espurna/button.cpp

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/*
BUTTON MODULE
Copyright (C) 2016-2019 by Xose Pérez <xose dot perez at gmail dot com>
*/
#include "button.h"
#if BUTTON_SUPPORT
#include <bitset>
#include <memory>
#include <vector>
#include "compat.h"
#include "gpio.h"
#include "system.h"
#include "mqtt.h"
#include "relay.h"
#include "light.h"
#include "ws.h"
#include "libs/BasePin.h"
#include "libs/DebounceEvent.h"
#include "gpio_pin.h"
#include "mcp23s08_pin.h"
#include "button_config.h"
BrokerBind(ButtonBroker);
// TODO: if we are using such conversion helpers across the codebase, should convert() be in internal ns?
namespace settings {
namespace internal {
template<>
debounce_event::types::Mode convert(const String& value) {
switch (value.toInt()) {
case 1:
return debounce_event::types::Mode::Switch;
case 0:
default:
return debounce_event::types::Mode::Pushbutton;
}
}
template<>
String serialize(const debounce_event::types::Mode& value) {
String result;
switch (value) {
case debounce_event::types::Mode::Switch:
result = "1";
break;
case debounce_event::types::Mode::Pushbutton:
default:
result = "0";
break;
}
return result;
}
template<>
debounce_event::types::PinValue convert(const String& value) {
switch (value.toInt()) {
case 1:
return debounce_event::types::PinValue::High;
case 2:
return debounce_event::types::PinValue::Initial;
default:
case 0:
return debounce_event::types::PinValue::Low;
}
}
template<>
String serialize(const debounce_event::types::PinValue& value) {
String result;
switch (value) {
case debounce_event::types::PinValue::Low:
result = "0";
break;
case debounce_event::types::PinValue::High:
result = "1";
break;
case debounce_event::types::PinValue::Initial:
result = "2";
break;
}
return result;
}
template<>
debounce_event::types::PinMode convert(const String& value) {
switch (value.toInt()) {
case 1:
return debounce_event::types::PinMode::InputPullup;
case 2:
return debounce_event::types::PinMode::InputPulldown;
case 0:
default:
return debounce_event::types::PinMode::Input;
}
}
template<>
String serialize(const debounce_event::types::PinMode& mode) {
String result;
switch (mode) {
case debounce_event::types::PinMode::InputPullup:
result = "1";
break;
case debounce_event::types::PinMode::InputPulldown:
result = "2";
break;
case debounce_event::types::PinMode::Input:
default:
result = "0";
break;
}
return result;
}
template <>
ButtonProvider convert(const String& value) {
auto type = static_cast<ButtonProvider>(value.toInt());
switch (type) {
case ButtonProvider::None:
case ButtonProvider::Gpio:
case ButtonProvider::Analog:
return type;
}
return ButtonProvider::None;
}
template<>
ButtonAction convert(const String& value) {
auto num = strtoul(value.c_str(), nullptr, 10);
if (num < ButtonsActionMax) {
auto action = static_cast<ButtonAction>(num);
switch (action) {
case ButtonAction::None:
case ButtonAction::Toggle:
case ButtonAction::On:
case ButtonAction::Off:
case ButtonAction::AccessPoint:
case ButtonAction::Reset:
case ButtonAction::Pulse:
case ButtonAction::FactoryReset:
case ButtonAction::Wps:
case ButtonAction::SmartConfig:
case ButtonAction::BrightnessIncrease:
case ButtonAction::BrightnessDecrease:
case ButtonAction::DisplayOn:
case ButtonAction::Custom:
return action;
}
}
return ButtonAction::None;
}
} // namespace internal
} // namespace settings
// -----------------------------------------------------------------------------
constexpr debounce_event::types::Config _buttonDecodeConfigBitmask(int bitmask) {
return {
((bitmask & ButtonMask::Pushbutton)
? debounce_event::types::Mode::Pushbutton
: debounce_event::types::Mode::Switch),
((bitmask & ButtonMask::DefaultLow) ? debounce_event::types::PinValue::Low
: (bitmask & ButtonMask::DefaultHigh) ? debounce_event::types::PinValue::High
: (bitmask & ButtonMask::DefaultBoot) ? debounce_event::types::PinValue::Initial
: debounce_event::types::PinValue::Low),
((bitmask & ButtonMask::SetPullup) ? debounce_event::types::PinMode::InputPullup
: (bitmask & ButtonMask::SetPulldown) ? debounce_event::types::PinMode::InputPulldown
: debounce_event::types::PinMode::Input)
};
}
constexpr ButtonAction _buttonDecodeEventAction(const ButtonActions& actions, button_event_t event) {
return (
(event == button_event_t::Pressed) ? actions.pressed :
(event == button_event_t::Released) ? actions.released :
(event == button_event_t::Click) ? actions.click :
(event == button_event_t::DoubleClick) ? actions.dblclick :
(event == button_event_t::LongClick) ? actions.lngclick :
(event == button_event_t::LongLongClick) ? actions.lnglngclick :
(event == button_event_t::TripleClick) ? actions.trplclick : ButtonAction::None
);
}
constexpr button_event_t _buttonMapReleased(uint8_t count, unsigned long length, unsigned long lngclick_delay, unsigned long lnglngclick_delay) {
return (
(0 == count) ? button_event_t::Released :
(1 == count) ? (
(length > lnglngclick_delay) ? button_event_t::LongLongClick :
(length > lngclick_delay) ? button_event_t::LongClick : button_event_t::Click
) :
(2 == count) ? button_event_t::DoubleClick :
(3 == count) ? button_event_t::TripleClick :
button_event_t::None
);
}
ButtonActions _buttonConstructActions(unsigned char index) {
return {
_buttonPress(index),
_buttonRelease(index),
_buttonClick(index),
_buttonDoubleClick(index),
_buttonLongClick(index),
_buttonLongLongClick(index),
_buttonTripleClick(index)
};
}
debounce_event::types::Config _buttonRuntimeConfig(unsigned char index) {
const auto config = _buttonDecodeConfigBitmask(_buttonConfigBitmask(index));
return {
getSetting({"btnMode", index}, config.mode),
getSetting({"btnDefVal", index}, config.default_value),
getSetting({"btnPinMode", index}, config.pin_mode)
};
}
int _buttonEventNumber(button_event_t event) {
return static_cast<int>(event);
}
// -----------------------------------------------------------------------------
button_event_delays_t::button_event_delays_t() :
debounce(_buttonDebounceDelay()),
repeat(_buttonRepeatDelay()),
lngclick(_buttonLongClickDelay()),
lnglngclick(_buttonLongLongClickDelay())
{}
button_event_delays_t::button_event_delays_t(unsigned long debounce, unsigned long repeat, unsigned long lngclick, unsigned long lnglngclick) :
debounce(debounce),
repeat(repeat),
lngclick(lngclick),
lnglngclick(lnglngclick)
{}
button_t::button_t(ButtonActions&& actions_, button_event_delays_t&& delays_) :
actions(std::move(actions_)),
event_delays(std::move(delays_))
{}
button_t::button_t(BasePinPtr&& pin, const debounce_event::types::Config& config, ButtonActions&& actions_, button_event_delays_t&& delays_) :
event_emitter(std::make_unique<debounce_event::EventEmitter>(std::move(pin), config, delays_.debounce, delays_.repeat)),
actions(std::move(actions_)),
event_delays(std::move(delays_))
{}
bool button_t::state() {
return event_emitter->isPressed();
}
button_event_t button_t::loop() {
if (event_emitter) {
switch (event_emitter->loop()) {
case debounce_event::types::EventPressed:
return button_event_t::Pressed;
case debounce_event::types::EventReleased: {
return _buttonMapReleased(
event_emitter->getEventCount(),
event_emitter->getEventLength(),
event_delays.lngclick,
event_delays.lnglngclick
);
}
case debounce_event::types::EventNone:
break;
}
}
return button_event_t::None;
}
std::vector<button_t> _buttons;
// -----------------------------------------------------------------------------
unsigned char buttonCount() {
return _buttons.size();
}
#if MQTT_SUPPORT
std::bitset<ButtonsMax> _buttons_mqtt_send_all(
(1 == BUTTON_MQTT_SEND_ALL_EVENTS) ? 0xFFFFFFFFUL : 0UL
);
std::bitset<ButtonsMax> _buttons_mqtt_retain(
(1 == BUTTON_MQTT_RETAIN) ? 0xFFFFFFFFUL : 0UL
);
#endif
#if WEB_SUPPORT
void _buttonWebSocketOnVisible(JsonObject& root) {
if (buttonCount() > 0) {
root["btnVisible"] = 1;
}
}
void _buttonWebSocketOnConnected(JsonObject& root) {
root["btnRepDel"] = getSetting("btnRepDel", _buttonRepeatDelay());
// XXX: unused! pending webui changes
#if 0
if (buttonCount() < 1) return;
JsonObject& module = root.createNestedObject("btn");
// TODO: hardware can sometimes use a different providers
// e.g. Sonoff Dual does not need `Pin`, `Mode` or any of `Del`
// TODO: schema names are uppercase to easily match settings?
// TODO: schema name->type map to generate WebUI elements?
JsonArray& schema = module.createNestedArray("_schema");
schema.add("Prov");
schema.add("GPIO");
schema.add("Mode");
schema.add("DefVal");
schema.add("PinMode");
schema.add("Press");
schema.add("Click");
schema.add("Dclk");
schema.add("Lclk");
schema.add("LLclk");
schema.add("Tclk");
schema.add("DebDel");
schema.add("RepDel");
schema.add("LclkDel");
schema.add("LLclkDel");
#if RELAY_SUPPORT
schema.add("Relay");
#endif
#if MQTT_SUPPORT
schema.add("MqttSendAll");
schema.add("MqttRetain");
#endif
JsonArray& buttons = module.createNestedArray("list");
for (unsigned char i=0; i<buttonCount(); i++) {
JsonArray& button = buttons.createNestedArray();
// TODO: configure PIN object instead of button specifically, link PIN<->BUTTON
button.add(getSetting({"btnProv", index}, _buttonProvider(index)));
if (_buttons[i].pin()) {
button.add(getSetting({"btnGPIO", index}, _buttonPin(index)));
const auto config = _buttonRuntimeConfig(index);
button.add(static_cast<int>(config.mode));
button.add(static_cast<int>(config.default_value));
button.add(static_cast<int>(config.pin_mode));
} else {
button.add(GPIO_NONE);
button.add(static_cast<int>(BUTTON_PUSHBUTTON));
button.add(0);
button.add(0);
button.add(0);
}
button.add(_buttons[i].actions.pressed);
button.add(_buttons[i].actions.click);
button.add(_buttons[i].actions.dblclick);
button.add(_buttons[i].actions.lngclick);
button.add(_buttons[i].actions.lnglngclick);
button.add(_buttons[i].actions.trplclick);
button.add(_buttons[i].event_delays.debounce);
button.add(_buttons[i].event_delays.repeat);
button.add(_buttons[i].event_delays.lngclick);
button.add(_buttons[i].event_delays.lnglngclick);
#if RELAY_SUPPORT
button.add(_buttons[i].relayID);
#endif
// TODO: send bitmask as number?
#if MQTT_SUPPORT
button.add(_buttons_mqtt_send_all[i] ? 1 : 0);
button.add(_buttons_mqtt_retain[i] ? 1 : 0);
#endif
}
#endif
}
bool _buttonWebSocketOnKeyCheck(const char * key, JsonVariant&) {
return (strncmp(key, "btn", 3) == 0);
}
#endif // WEB_SUPPORT
ButtonCustomAction _button_custom_action { nullptr };
void buttonSetCustomAction(ButtonCustomAction action) {
_button_custom_action = action;
}
bool buttonState(unsigned char id) {
return (id < _buttons.size())
? _buttons[id].state()
: false;
}
ButtonAction buttonAction(unsigned char id, const button_event_t event) {
return (id < _buttons.size())
? _buttonDecodeEventAction(_buttons[id].actions, event)
: ButtonAction::None;
}
// Note that we don't directly return F(...), but use a temporary to assign it conditionally
// (ref. https://github.com/esp8266/Arduino/pull/6950 "PROGMEM footprint cleanup for responseCodeToString")
// In this particular case, saves 76 bytes (120 vs 44)
String _buttonEventString(button_event_t event) {
const __FlashStringHelper* ptr = nullptr;
switch (event) {
case button_event_t::Pressed:
ptr = F("pressed");
break;
case button_event_t::Released:
ptr = F("released");
break;
case button_event_t::Click:
ptr = F("click");
break;
case button_event_t::DoubleClick:
ptr = F("double-click");
break;
case button_event_t::LongClick:
ptr = F("long-click");
break;
case button_event_t::LongLongClick:
ptr = F("looong-click");
break;
case button_event_t::TripleClick:
ptr = F("triple-click");
break;
case button_event_t::None:
ptr = F("none");
break;
}
return String(ptr);
}
#if RELAY_SUPPORT
unsigned char _buttonRelaySetting(unsigned char id) {
static std::vector<uint8_t> relays;
if (!relays.size()) {
relays.reserve(_buttons.size());
for (unsigned char button = 0; button < _buttons.size(); ++button) {
relays.push_back(getSetting({"btnRelay", button}, _buttonRelay(button)));
}
}
return relays[id];
}
void _buttonRelayAction(unsigned char id, ButtonAction action) {
auto relayId = _buttonRelaySetting(id);
switch (action) {
case ButtonAction::Toggle:
relayToggle(relayId);
break;
case ButtonAction::On:
relayStatus(relayId, true);
break;
case ButtonAction::Off:
relayStatus(relayId, false);
break;
case ButtonAction::Pulse:
// TODO
break;
default:
break;
}
}
#endif // RELAY_SUPPORT
void buttonEvent(unsigned char id, button_event_t event) {
DEBUG_MSG_P(PSTR("[BUTTON] Button #%u event %d (%s)\n"),
id, _buttonEventNumber(event), _buttonEventString(event).c_str()
);
if (event == button_event_t::None) return;
auto& button = _buttons[id];
auto action = _buttonDecodeEventAction(button.actions, event);
#if BROKER_SUPPORT
ButtonBroker::Publish(id, event);
#endif
#if MQTT_SUPPORT
if ((action != ButtonAction::None) || _buttons_mqtt_send_all[id]) {
mqttSend(MQTT_TOPIC_BUTTON, id, _buttonEventString(event).c_str(), false, _buttons_mqtt_retain[id]);
}
#endif
switch (action) {
#if RELAY_SUPPORT
case ButtonAction::Toggle:
case ButtonAction::On:
case ButtonAction::Off:
case ButtonAction::Pulse:
_buttonRelayAction(id, action);
break;
#endif
case ButtonAction::AccessPoint:
if (wifiState() & WIFI_STATE_AP) {
wifiStartSTA();
} else {
wifiStartAP();
}
break;
case ButtonAction::Reset:
deferredReset(100, CUSTOM_RESET_HARDWARE);
break;
case ButtonAction::FactoryReset:
DEBUG_MSG_P(PSTR("\n\nFACTORY RESET\n\n"));
resetSettings();
deferredReset(100, CUSTOM_RESET_FACTORY);
break;
case ButtonAction::Wps:
#if defined(JUSTWIFI_ENABLE_WPS)
wifiStartWPS();
#endif
break;
case ButtonAction::SmartConfig:
#if defined(JUSTWIFI_ENABLE_SMARTCONFIG)
wifiStartSmartConfig();
#endif
break;
case ButtonAction::BrightnessIncrease:
#if LIGHT_PROVIDER != LIGHT_PROVIDER_NONE
lightBrightnessStep(1);
lightUpdate();
#endif
break;
case ButtonAction::BrightnessDecrease:
#if LIGHT_PROVIDER != LIGHT_PROVIDER_NONE
lightBrightnessStep(-1);
lightUpdate();
#endif
break;
case ButtonAction::DisplayOn:
#if THERMOSTAT_DISPLAY_SUPPORT
displayOn();
#endif
break;
case ButtonAction::Custom:
if (_button_custom_action) {
_button_custom_action(id);
}
break;
case ButtonAction::None:
break;
}
}
void _buttonConfigure() {
#if MQTT_SUPPORT
for (unsigned char index = 0; index < _buttons.size(); ++index) {
_buttons_mqtt_send_all[index] = getSetting({"btnMqttSendAll", index}, _buttonMqttSendAllEvents(index));
_buttons_mqtt_retain[index] = getSetting({"btnMqttRetain", index}, _buttonMqttRetain(index));
}
#endif
}
// TODO: compatibility proxy, fetch global key before indexed
template<typename T>
unsigned long _buttonGetSetting(const char* key, unsigned char index, T default_value) {
return getSetting({key, index}, getSetting(key, default_value));
}
void buttonLoop() {
for (size_t id = 0; id < _buttons.size(); ++id) {
auto event = _buttons[id].loop();
if (event != button_event_t::None) {
buttonEvent(id, event);
}
}
}
// Resistor ladder buttons. Inspired by:
// - https://gitter.im/tinkerman-cat/espurna?at=5f5d44c8df4af236f902e25d
// - https://github.com/bxparks/AceButton/tree/develop/docs/resistor_ladder (especially thx @bxparks for the great documentation!)
// - https://github.com/bxparks/AceButton/blob/develop/src/ace_button/LadderButtonConfig.cpp
// - https://github.com/dxinteractive/AnalogMultiButton
#if BUTTON_PROVIDER_ANALOG_SUPPORT
class AnalogPin final : public BasePin {
public:
static constexpr int RangeFrom { 0 };
static constexpr int RangeTo { 1023 };
AnalogPin() = delete;
explicit AnalogPin(unsigned char pin, int expected) :
_pin(pin),
_expected(expected)
{
pins.reserve(ButtonsPresetMax);
pins.push_back(this);
adjustPinRanges();
}
~AnalogPin() {
pins.erase(std::remove(pins.begin(), pins.end(), this), pins.end());
adjustPinRanges();
}
String description() const override {
char buffer[64];
snprintf_P(buffer, sizeof(buffer),
PSTR("%s @ level %d (%d...%d)\n"),
id(), _expected, _from, _to);
return buffer;
}
// Notice that 'static' method vars are shared between instances
// This way we will throttle every invocation (which should be safe to do, since we only read things through the button loop)
int analogRead() {
static unsigned long ts { ESP.getCycleCount() };
static int last { ::analogRead(_pin) };
// Cannot hammer analogRead() all the time:
// https://github.com/esp8266/Arduino/issues/1634
if (ESP.getCycleCount() - ts >= _read_interval) {
ts = ESP.getCycleCount();
last = ::analogRead(_pin);
}
return last;
}
// XXX: make static ctor and call this implicitly?
static bool checkExpectedLevel(int expected) {
if (expected > RangeTo) {
return false;
}
for (auto pin : pins) {
if (expected == pin->_expected) {
return false;
}
}
return true;
}
unsigned char pin() const override {
return _pin;
}
const char* id() const override {
return "AnalogPin";
}
// Simulate LOW level when the range matches and HIGH when it does not
int digitalRead() override {
const auto reading = analogRead();
return !((_from < reading) && (reading < _to));
}
void pinMode(int8_t) override {
}
void digitalWrite(int8_t val) override {
}
private:
// ref. https://github.com/bxparks/AceButton/tree/develop/docs/resistor_ladder#level-matching-tolerance-range
// fuzzy matching instead of directly comparing with the `_expected` level and / or specifying tolerance manually
// for example, for pins with expected values 0, 327, 512 and 844 we match analogRead() when:
// - 0..163 for 0
// - 163..419 for 327
// - 419..678 for 512
// - 678..933 for 844
// - 933..1024 is ignored
static std::vector<AnalogPin*> pins;
unsigned long _read_interval { microsecondsToClockCycles(200u) };
unsigned char _pin { A0 };
int _expected { 0u };
int _from { RangeFrom };
int _to { RangeTo };
static void adjustPinRanges() {
std::sort(pins.begin(), pins.end(), [](const AnalogPin* lhs, const AnalogPin* rhs) -> bool {
return lhs->_expected < rhs->_expected;
});
AnalogPin* last { nullptr };
for (unsigned index = 0; index < pins.size(); ++index) {
int edge = (index + 1 != pins.size())
? pins[index + 1]->_expected
: RangeTo;
pins[index]->_from = last
? last->_to
: RangeFrom;
pins[index]->_to = (pins[index]->_expected + edge) / 2;
last = pins[index];
}
}
};
std::vector<AnalogPin*> AnalogPin::pins;
#endif // BUTTON_PROVIDER_ANALOG_SUPPORT
BasePinPtr _buttonGpioPin(unsigned char index, ButtonProvider provider) {
BasePinPtr result;
auto pin = getSetting({"btnGPIO", index}, _buttonPin(index));
switch (provider) {
case ButtonProvider::Gpio: {
#if BUTTON_PROVIDER_GPIO_SUPPORT
auto* base = gpioBase(getSetting({"btnGPIOType", index}, _buttonPinType(index)));
if (!base) {
break;
}
if (!gpioLock(*base, pin)) {
break;
}
result = std::move(base->pin(pin));
#endif
break;
}
case ButtonProvider::Analog: {
#if BUTTON_PROVIDER_ANALOG_SUPPORT
if (A0 != pin) {
break;
}
auto level = getSetting({"btnLevel", index}, _buttonAnalogLevel(index));
if (!AnalogPin::checkExpectedLevel(level)) {
break;
}
result.reset(new AnalogPin(pin, level));
#endif
break;
}
default:
break;
}
return result;
}
ButtonActions _buttonActions(unsigned char index) {
return {
getSetting({"btnPress", index}, _buttonPress(index)),
getSetting({"btnRlse", index}, _buttonRelease(index)),
getSetting({"btnClick", index}, _buttonClick(index)),
getSetting({"btnDclk", index}, _buttonDoubleClick(index)),
getSetting({"btnLclk", index}, _buttonLongClick(index)),
getSetting({"btnLLclk", index}, _buttonLongLongClick(index)),
getSetting({"btnTclk", index}, _buttonTripleClick(index))
};
}
// Note that we use settings without indexes as default values to preserve backwards compatibility
button_event_delays_t _buttonDelays(unsigned char index) {
return {
_buttonGetSetting("btnDebDel", index, _buttonDebounceDelay(index)),
_buttonGetSetting("btnRepDel", index, _buttonRepeatDelay(index)),
_buttonGetSetting("btnLclkDel", index, _buttonLongClickDelay(index)),
_buttonGetSetting("btnLLclkDel", index, _buttonLongLongClickDelay(index)),
};
}
bool _buttonSetupProvider(unsigned char index, ButtonProvider provider) {
bool result { false };
switch (provider) {
case ButtonProvider::Analog:
case ButtonProvider::Gpio: {
#if BUTTON_PROVIDER_GPIO_SUPPORT || BUTTON_PROVIDER_ANALOG_SUPPORT
auto pin = _buttonGpioPin(index, provider);
if (!pin) {
break;
}
_buttons.emplace_back(
std::move(pin),
_buttonRuntimeConfig(index),
_buttonActions(index),
_buttonDelays(index));
result = true;
#endif
break;
}
case ButtonProvider::None:
break;
}
return result;
}
void buttonSetup() {
// Backwards compatibility
moveSetting("btnDelay", "btnRepDel");
for (unsigned char index = 0; index < ButtonsMax; ++index) {
auto provider = getSetting({"btnProv", index}, _buttonProvider(index));
if (!_buttonSetupProvider(index, provider)) {
break;
}
}
auto count = _buttons.size();
DEBUG_MSG_P(PSTR("[BUTTON] Number of buttons: %u\n"), count);
if (!count) {
return;
}
#if TERMINAL_SUPPORT
terminalRegisterCommand(F("BUTTON"), [](const terminal::CommandContext& ctx) {
unsigned index { 0u };
for (auto& button : _buttons) {
ctx.output.printf("%u - ", index++);
if (button.event_emitter) {
auto& pin = button.event_emitter->pin();
ctx.output.println(pin->description());
} else {
ctx.output.println(F("Virtual"));
}
}
terminalOK(ctx);
});
#endif
_buttonConfigure();
// Websocket Callbacks
#if WEB_SUPPORT
wsRegister()
.onVisible(_buttonWebSocketOnVisible)
.onConnected(_buttonWebSocketOnConnected)
.onKeyCheck(_buttonWebSocketOnKeyCheck);
#endif
// Register system callbacks
espurnaRegisterLoop(buttonLoop);
espurnaRegisterReload(_buttonConfigure);
}
#endif // BUTTON_SUPPORT