TTP229 BSF support

esphome/components/ttp229_bsf/__init__.py

@@ -0,0 +1,28 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome import pins
+from esphome.const import CONF_ID, CONF_SDO_PIN, CONF_SCL_PIN
+
+DEPENDENCIES = ['i2c']
+AUTO_LOAD = ['binary_sensor']
+
+CONF_TTP229_ID = 'ttp229_id'
+ttp229_bsf_ns = cg.esphome_ns.namespace('ttp229_bsf')
+
+TTP229BSFComponent = ttp229_bsf_ns.class_('TTP229BSFComponent', cg.Component)
+
+CONFIG_SCHEMA = cv.Schema({
+    cv.GenerateID(): cv.declare_id(TTP229BSFComponent),
+    cv.Required(CONF_SDO_PIN): pins.gpio_input_pullup_pin_schema,
+    cv.Required(CONF_SCL_PIN): pins.gpio_output_pin_schema,
+}).extend(cv.COMPONENT_SCHEMA)
+
+
+def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    yield cg.register_component(var, config)
+
+    sdo = yield cg.gpio_pin_expression(config[CONF_SDO_PIN])
+    cg.add(var.set_sdo_pin(sdo))
+    scl = yield cg.gpio_pin_expression(config[CONF_SCL_PIN])
+    cg.add(var.set_scl_pin(scl))

esphome/components/ttp229_bsf/binary_sensor.py

@@ -0,0 +1,23 @@
+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 . import ttp229_bsf_ns, TTP229BSFComponent, CONF_TTP229_ID
+
+DEPENDENCIES = ['ttp229_bsf']
+TTP229Channel = ttp229_bsf_ns.class_('TTP229Channel', binary_sensor.BinarySensor)
+
+CONFIG_SCHEMA = binary_sensor.BINARY_SENSOR_SCHEMA.extend({
+    cv.GenerateID(): cv.declare_id(TTP229Channel),
+    cv.GenerateID(CONF_TTP229_ID): cv.use_id(TTP229BSFComponent),
+    cv.Required(CONF_CHANNEL): cv.int_range(min=0, max=15),
+})
+
+
+def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    yield binary_sensor.register_binary_sensor(var, config)
+
+    cg.add(var.set_channel(config[CONF_CHANNEL]))
+    hub = yield cg.get_variable(config[CONF_TTP229_ID])
+    cg.add(hub.register_channel(var))

esphome/components/ttp229_bsf/ttp229_bsf.cpp

@@ -0,0 +1,23 @@
+#include "ttp229_bsf.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace ttp229_bsf {
+
+static const char *TAG = "ttp229_bsf";
+
+void TTP229BSFComponent::setup() {
+  ESP_LOGCONFIG(TAG, "Setting up ttp229_bsf... ");
+  this->sdo_pin_->setup();
+  this->scl_pin_->setup();
+  this->scl_pin_->digital_write(true);
+  delay(2);
+}
+void TTP229BSFComponent::dump_config() {
+  ESP_LOGCONFIG(TAG, "ttp229:");
+  LOG_PIN("  SCL pin: ", this->scl_pin_);
+  LOG_PIN("  SDO pin: ", this->sdo_pin_);
+}
+
+}  // namespace ttp229_bsf
+}  // namespace esphome

esphome/components/ttp229_bsf/ttp229_bsf.h

@@ -0,0 +1,53 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/components/binary_sensor/binary_sensor.h"
+
+namespace esphome {
+namespace ttp229_bsf {
+
+class TTP229BSFChannel : public binary_sensor::BinarySensor {
+ public:
+  void set_channel(uint8_t channel) { channel_ = channel; }
+  void process(uint16_t data) { this->publish_state(data & (1 << this->channel_)); }
+
+ protected:
+  uint8_t channel_;
+};
+
+class TTP229BSFComponent : public Component {
+ public:
+  void set_sdo_pin(GPIOPin *sdo_pin) { sdo_pin_ = sdo_pin; }
+  void set_scl_pin(GPIOPin *scl_pin) { scl_pin_ = scl_pin; }
+  void register_channel(TTP229BSFChannel *channel) { this->channels_.push_back(channel); }
+  void setup() override;
+  void dump_config() override;
+  float get_setup_priority() const override { return setup_priority::DATA; }
+  void loop() override {
+    // check datavalid if sdo is high
+    if (!this->sdo_pin_->digital_read()) {
+      return;
+    }
+    uint16_t touched = 0;
+    for (uint8_t i = 0; i < 16; i++) {
+      this->scl_pin_->digital_write(false);
+      delayMicroseconds(2);  // 500KHz
+      bool bitval = !this->sdo_pin_->digital_read();
+      this->scl_pin_->digital_write(true);
+      delayMicroseconds(2);  // 500KHz
+
+      touched |= uint16_t(bitval) << i;
+    }
+    for (auto *channel : this->channels_) {
+      channel->process(touched);
+    }
+  }
+
+ protected:
+  GPIOPin *sdo_pin_;
+  GPIOPin *scl_pin_;
+  std::vector<TTP229BSFChannel *> channels_{};
+};
+
+}  // namespace ttp229_bsf
+}  // namespace esphome

esphome/const.py

@@ -349,7 +349,9 @@ CONF_SAMSUNG = 'samsung'
 CONF_SCAN = 'scan'
 CONF_SCAN_INTERVAL = 'scan_interval'
 CONF_SCL = 'scl'
+CONF_SCL_PIN = 'scl_pin'
 CONF_SDA = 'sda'
+CONF_SDO_PIN = 'sdo_pin'
 CONF_SECOND = 'second'
 CONF_SECONDS = 'seconds'
 CONF_SEGMENTS = 'segments'

tests/test3.yaml

@@ -189,6 +189,9 @@ binary_sensor:
   - platform: ttp229_lsf
     channel: 1
     name: TTP229 LSF Test
+  - platform: ttp229_bsf
+    channel: 1
+    name: TTP229 BSF Test
   - platform: custom
     lambda: |-
       auto s = new CustomBinarySensor();
@@ -392,3 +395,7 @@ servo:
   output: out
 
 ttp229_lsf:
+
+ttp229_bsf:
+  sdo_pin: D0
+  scl_pin: D1