Merge pull request #6 from mvturnho/mpr121_threshold

added option for debounce and thresholds.

esphome/components/mpr121/__init__.py

@@ -1,7 +1,7 @@
 import esphome.codegen as cg
 import esphome.config_validation as cv
 from esphome.components import i2c
-from esphome.const import CONF_ID
+from esphome.const import CONF_ID, CONF_RELEASE_DEBOUNCE, CONF_TOUCH_DEBOUNCE
 
 DEPENDENCIES = ['i2c']
 AUTO_LOAD = ['binary_sensor']
@@ -13,10 +13,16 @@ MPR121Component = mpr121_ns.class_('MPR121Component', cg.Component, i2c.I2CDevic
 MULTI_CONF = True
 CONFIG_SCHEMA = cv.Schema({
     cv.GenerateID(): cv.declare_id(MPR121Component),
+    cv.Optional(CONF_RELEASE_DEBOUNCE):  cv.All(cv.Coerce(int), cv.Range(min=0, max=7)),
+    cv.Optional(CONF_TOUCH_DEBOUNCE):  cv.All(cv.Coerce(int), cv.Range(min=0, max=7))
 }).extend(cv.COMPONENT_SCHEMA).extend(i2c.i2c_device_schema(0x5A))
 
 
 def to_code(config):
     var = cg.new_Pvariable(config[CONF_ID])
+    if CONF_TOUCH_DEBOUNCE in config:
+        cg.add(var.set_touch_debounce(config[CONF_TOUCH_DEBOUNCE]))
+    if CONF_RELEASE_DEBOUNCE in config:
+        cg.add(var.set_release_debounce(config[CONF_RELEASE_DEBOUNCE]))
     yield cg.register_component(var, config)
     yield i2c.register_i2c_device(var, config)

esphome/components/mpr121/binary_sensor.py

@@ -1,7 +1,7 @@
 import esphome.codegen as cg
 import esphome.config_validation as cv
 from esphome.components import binary_sensor
-from esphome.const import CONF_CHANNEL, CONF_ID
+from esphome.const import CONF_CHANNEL, CONF_ID, CONF_TOUCH_THRESHOLD, CONF_RELEASE_THRESHOLD
 from . import mpr121_ns, MPR121Component, CONF_MPR121_ID
 
 DEPENDENCIES = ['mpr121']
@@ -11,6 +11,8 @@ CONFIG_SCHEMA = binary_sensor.BINARY_SENSOR_SCHEMA.extend({
     cv.GenerateID(): cv.declare_id(MPR121Channel),
     cv.GenerateID(CONF_MPR121_ID): cv.use_id(MPR121Component),
     cv.Required(CONF_CHANNEL): cv.int_range(min=0, max=11),
+    cv.Optional(CONF_TOUCH_THRESHOLD): cv.All(cv.Coerce(int), cv.Range(min=0x05, max=0x30)),
+    cv.Optional(CONF_RELEASE_THRESHOLD): cv.All(cv.Coerce(int), cv.Range(min=0x05, max=0x30)),
 })
 
 
@@ -19,6 +21,9 @@ def to_code(config):
     yield binary_sensor.register_binary_sensor(var, config)
 
     cg.add(var.set_channel(config[CONF_CHANNEL]))
-
+    if CONF_TOUCH_THRESHOLD in config:
+        cg.add(var.set_touch_threshold(config[CONF_TOUCH_THRESHOLD]))
+    if CONF_RELEASE_THRESHOLD in config:
+        cg.add(var.set_release_threshold(config[CONF_RELEASE_THRESHOLD]))
     hub = yield cg.get_variable(config[CONF_MPR121_ID])
     cg.add(hub.register_channel(var))

esphome/components/mpr121/mpr121.cpp

@@ -17,10 +17,9 @@ void MPR121Component::setup() {
     return;
   }
 
-  // set touch sensitivity for all 12 channels
-  for (uint8_t i = 0; i < 12; i++) {
-    this->write_byte(MPR121_TOUCHTH_0 + 2 * i, 12);
-    this->write_byte(MPR121_RELEASETH_0 + 2 * i, 6);
+  for (auto *channel : this->channels_) {
+    this->write_byte(MPR121_TOUCHTH_0 + 2 * channel->get_channel(), channel->get_touch_threshold());
+    this->write_byte(MPR121_RELEASETH_0 + 2 * channel->get_channel(), channel->get_release_threshold());
   }
   this->write_byte(MPR121_MHDR, 0x01);
   this->write_byte(MPR121_NHDR, 0x01);
@@ -36,7 +35,7 @@ void MPR121Component::setup() {
   this->write_byte(MPR121_NCLT, 0x00);
   this->write_byte(MPR121_FDLT, 0x00);
 
-  this->write_byte(MPR121_DEBOUNCE, 0);
+  this->write_byte(MPR121_DEBOUNCE, this->debounce_);
   // default, 16uA charge current
   this->write_byte(MPR121_CONFIG1, 0x10);
   // 0.5uS encoding, 1ms period
@@ -44,6 +43,21 @@ void MPR121Component::setup() {
   // start with first 5 bits of baseline tracking
   this->write_byte(MPR121_ECR, 0x8F);
 }
+
+void MPR121Component::set_touch_debounce(uint8_t debounce) {
+  uint8_t mask = debounce << 4;
+  this->debounce_ &= 0x0f;
+  this->debounce_ |= mask;
+  ESP_LOGD(TAG, "debounce:%02x", this->debounce_);
+}
+
+void MPR121Component::set_release_debounce(uint8_t debounce) {
+  uint8_t mask = debounce & 0x0f;
+  this->debounce_ &= 0xf0;
+  this->debounce_ |= mask;
+  ESP_LOGD(TAG, "debounce:%02x", this->debounce_);
+};
+
 void MPR121Component::dump_config() {
   ESP_LOGCONFIG(TAG, "MPR121:");
   LOG_I2C_DEVICE(this);
@@ -59,6 +73,7 @@ void MPR121Component::dump_config() {
       break;
   }
 }
+
 void MPR121Component::loop() {
   uint16_t val = 0;
   this->read_byte_16(MPR121_TOUCHSTATUS_L, &val);

esphome/components/mpr121/mpr121.h

@@ -49,14 +49,23 @@ class MPR121Channel : public binary_sensor::BinarySensor {
  public:
   void set_channel(uint8_t channel) { channel_ = channel; }
   void process(uint16_t data) { this->publish_state(static_cast<bool>(data & (1 << this->channel_))); }
+  int get_channel() { return this->channel_; };
+  void set_touch_threshold(uint8_t touch_threshold) { this->touch_threshold_ = touch_threshold; };
+  void set_release_threshold(uint8_t release_threshold) { this->release_threshold = release_threshold; };
+  uint8_t get_touch_threshold() { return this->touch_threshold_; };
+  uint8_t get_release_threshold() { return this->release_threshold; };
 
  protected:
   uint8_t channel_{0};
+  uint8_t touch_threshold_{12};
+  uint8_t release_threshold{6};
 };
 
 class MPR121Component : public Component, public i2c::I2CDevice {
  public:
   void register_channel(MPR121Channel *channel) { this->channels_.push_back(channel); }
+  void set_touch_debounce(uint8_t debounce);
+  void set_release_debounce(uint8_t debounce);
   void setup() override;
   void dump_config() override;
   float get_setup_priority() const override { return setup_priority::DATA; }
@@ -64,6 +73,8 @@ class MPR121Component : public Component, public i2c::I2CDevice {
 
  protected:
   std::vector<MPR121Channel *> channels_{};
+  uint16_t currtouched_{0};
+  uint8_t debounce_{0};
   enum ErrorCode {
     NONE = 0,
     COMMUNICATION_FAILED,

esphome/const.py

@@ -448,6 +448,10 @@ CONF_WIFI = 'wifi'
 CONF_WILL_MESSAGE = 'will_message'
 CONF_WINDOW_SIZE = 'window_size'
 CONF_ZERO = 'zero'
+CONF_TOUCH_THRESHOLD = "touch_threshold"
+CONF_RELEASE_THRESHOLD = "release_threshold"
+CONF_TOUCH_DEBOUNCE = "touch_debounce"
+CONF_RELEASE_DEBOUNCE = "release_debounce"
 
 ICON_ARROW_EXPAND_VERTICAL = 'mdi:arrow-expand-vertical'
 ICON_BATTERY = 'mdi:battery'