mirror of
https://github.com/esphome/esphome.git
synced 2024-11-10 01:07:45 +01:00
add support for SN74HC595 shift register (#1083)
* add support for SN74HC595 shift register * fix linter errors * more linter reported issues fixed * hopefully last linter error cleanup * one more linter fix * looks like the linter is always keeping stuff for later, is this the final fix? * add test Co-authored-by: Guillermo Ruffino <glm.net@gmail.com>
This commit is contained in:
parent
ca4107d450
commit
3c9712d683
4 changed files with 198 additions and 3 deletions
54
esphome/components/sn74hc595/__init__.py
Normal file
54
esphome/components/sn74hc595/__init__.py
Normal file
|
@ -0,0 +1,54 @@
|
|||
import esphome.codegen as cg
|
||||
import esphome.config_validation as cv
|
||||
from esphome import pins
|
||||
from esphome.const import CONF_ID, CONF_NUMBER, CONF_INVERTED, CONF_DATA_PIN, CONF_CLOCK_PIN
|
||||
|
||||
DEPENDENCIES = []
|
||||
MULTI_CONF = True
|
||||
|
||||
sn74hc595_ns = cg.esphome_ns.namespace('sn74hc595')
|
||||
|
||||
SN74HC595Component = sn74hc595_ns.class_('SN74HC595Component', cg.Component)
|
||||
SN74HC595GPIOPin = sn74hc595_ns.class_('SN74HC595GPIOPin', cg.GPIOPin)
|
||||
|
||||
CONF_SN74HC595 = 'sn74hc595'
|
||||
CONF_LATCH_PIN = 'latch_pin'
|
||||
CONF_OE_PIN = 'oe_pin'
|
||||
CONF_SR_COUNT = 'sr_count'
|
||||
CONFIG_SCHEMA = cv.Schema({
|
||||
cv.Required(CONF_ID): cv.declare_id(SN74HC595Component),
|
||||
cv.Required(CONF_DATA_PIN): pins.gpio_output_pin_schema,
|
||||
cv.Required(CONF_CLOCK_PIN): pins.gpio_output_pin_schema,
|
||||
cv.Required(CONF_LATCH_PIN): pins.gpio_output_pin_schema,
|
||||
cv.Optional(CONF_OE_PIN): pins.gpio_output_pin_schema,
|
||||
cv.Optional(CONF_SR_COUNT, default=1): cv.int_range(1, 4)
|
||||
}).extend(cv.COMPONENT_SCHEMA)
|
||||
|
||||
|
||||
def to_code(config):
|
||||
var = cg.new_Pvariable(config[CONF_ID])
|
||||
yield cg.register_component(var, config)
|
||||
data_pin = yield cg.gpio_pin_expression(config[CONF_DATA_PIN])
|
||||
cg.add(var.set_data_pin(data_pin))
|
||||
clock_pin = yield cg.gpio_pin_expression(config[CONF_CLOCK_PIN])
|
||||
cg.add(var.set_clock_pin(clock_pin))
|
||||
latch_pin = yield cg.gpio_pin_expression(config[CONF_LATCH_PIN])
|
||||
cg.add(var.set_latch_pin(latch_pin))
|
||||
oe_pin = yield cg.gpio_pin_expression(config[CONF_OE_PIN])
|
||||
cg.add(var.set_oe_pin(oe_pin))
|
||||
cg.add(var.set_sr_count(config[CONF_SR_COUNT]))
|
||||
|
||||
|
||||
SN74HC595_OUTPUT_PIN_SCHEMA = cv.Schema({
|
||||
cv.Required(CONF_SN74HC595): cv.use_id(SN74HC595Component),
|
||||
cv.Required(CONF_NUMBER): cv.int_,
|
||||
cv.Optional(CONF_INVERTED, default=False): cv.boolean,
|
||||
})
|
||||
SN74HC595_INPUT_PIN_SCHEMA = cv.Schema({})
|
||||
|
||||
|
||||
@pins.PIN_SCHEMA_REGISTRY.register(CONF_SN74HC595,
|
||||
(SN74HC595_OUTPUT_PIN_SCHEMA, SN74HC595_INPUT_PIN_SCHEMA))
|
||||
def sn74hc595_pin_to_code(config):
|
||||
parent = yield cg.get_variable(config[CONF_SN74HC595])
|
||||
yield SN74HC595GPIOPin.new(parent, config[CONF_NUMBER], config[CONF_INVERTED])
|
70
esphome/components/sn74hc595/sn74hc595.cpp
Normal file
70
esphome/components/sn74hc595/sn74hc595.cpp
Normal file
|
@ -0,0 +1,70 @@
|
|||
#include "sn74hc595.h"
|
||||
#include "esphome/core/log.h"
|
||||
|
||||
namespace esphome {
|
||||
namespace sn74hc595 {
|
||||
|
||||
static const char *TAG = "sn74hc595";
|
||||
|
||||
void SN74HC595Component::setup() {
|
||||
ESP_LOGCONFIG(TAG, "Setting up SN74HC595...");
|
||||
|
||||
if (this->have_oe_pin_) { // disable output
|
||||
pinMode(this->oe_pin_->get_pin(), OUTPUT);
|
||||
digitalWrite(this->oe_pin_->get_pin(), HIGH);
|
||||
}
|
||||
|
||||
// initialize output pins
|
||||
pinMode(this->clock_pin_->get_pin(), OUTPUT);
|
||||
pinMode(this->data_pin_->get_pin(), OUTPUT);
|
||||
pinMode(this->latch_pin_->get_pin(), OUTPUT);
|
||||
digitalWrite(this->clock_pin_->get_pin(), LOW);
|
||||
digitalWrite(this->data_pin_->get_pin(), LOW);
|
||||
digitalWrite(this->latch_pin_->get_pin(), LOW);
|
||||
|
||||
// send state to shift register
|
||||
this->write_gpio_();
|
||||
}
|
||||
|
||||
void SN74HC595Component::dump_config() { ESP_LOGCONFIG(TAG, "SN74HC595:"); }
|
||||
|
||||
bool SN74HC595Component::digital_read_(uint8_t pin) { return bitRead(this->output_bits_, pin); }
|
||||
|
||||
void SN74HC595Component::digital_write_(uint8_t pin, bool value) {
|
||||
bitWrite(this->output_bits_, pin, value);
|
||||
this->write_gpio_();
|
||||
}
|
||||
|
||||
bool SN74HC595Component::write_gpio_() {
|
||||
for (int i = this->sr_count_ - 1; i >= 0; i--) {
|
||||
uint8_t data = (uint8_t)(this->output_bits_ >> (8 * i) & 0xff);
|
||||
shiftOut(this->data_pin_->get_pin(), this->clock_pin_->get_pin(), MSBFIRST, data);
|
||||
}
|
||||
|
||||
// pulse latch to activate new values
|
||||
digitalWrite(this->latch_pin_->get_pin(), HIGH);
|
||||
digitalWrite(this->latch_pin_->get_pin(), LOW);
|
||||
|
||||
// enable output if configured
|
||||
if (this->have_oe_pin_) {
|
||||
digitalWrite(this->oe_pin_->get_pin(), LOW);
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
float SN74HC595Component::get_setup_priority() const { return setup_priority::IO; }
|
||||
|
||||
void SN74HC595GPIOPin::setup() {}
|
||||
|
||||
bool SN74HC595GPIOPin::digital_read() { return this->parent_->digital_read_(this->pin_) != this->inverted_; }
|
||||
|
||||
void SN74HC595GPIOPin::digital_write(bool value) {
|
||||
this->parent_->digital_write_(this->pin_, value != this->inverted_);
|
||||
}
|
||||
|
||||
SN74HC595GPIOPin::SN74HC595GPIOPin(SN74HC595Component *parent, uint8_t pin, bool inverted)
|
||||
: GPIOPin(pin, OUTPUT, inverted), parent_(parent) {}
|
||||
|
||||
} // namespace sn74hc595
|
||||
} // namespace esphome
|
55
esphome/components/sn74hc595/sn74hc595.h
Normal file
55
esphome/components/sn74hc595/sn74hc595.h
Normal file
|
@ -0,0 +1,55 @@
|
|||
#pragma once
|
||||
|
||||
#include "esphome/core/component.h"
|
||||
#include "esphome/core/esphal.h"
|
||||
|
||||
namespace esphome {
|
||||
namespace sn74hc595 {
|
||||
|
||||
class SN74HC595Component : public Component {
|
||||
public:
|
||||
SN74HC595Component() = default;
|
||||
|
||||
void setup() override;
|
||||
float get_setup_priority() const override;
|
||||
void dump_config() override;
|
||||
|
||||
void set_data_pin(GPIOPin *pin) { data_pin_ = pin; }
|
||||
void set_clock_pin(GPIOPin *pin) { clock_pin_ = pin; }
|
||||
void set_latch_pin(GPIOPin *pin) { latch_pin_ = pin; }
|
||||
void set_oe_pin(GPIOPin *pin) {
|
||||
oe_pin_ = pin;
|
||||
have_oe_pin_ = true;
|
||||
}
|
||||
void set_sr_count(uint8_t count) { sr_count_ = count; }
|
||||
|
||||
protected:
|
||||
friend class SN74HC595GPIOPin;
|
||||
bool digital_read_(uint8_t pin);
|
||||
void digital_write_(uint8_t pin, bool value);
|
||||
bool write_gpio_();
|
||||
|
||||
GPIOPin *data_pin_;
|
||||
GPIOPin *clock_pin_;
|
||||
GPIOPin *latch_pin_;
|
||||
GPIOPin *oe_pin_;
|
||||
uint8_t sr_count_;
|
||||
bool have_oe_pin_{false};
|
||||
uint32_t output_bits_{0x00};
|
||||
};
|
||||
|
||||
/// Helper class to expose a SC74HC595 pin as an internal output GPIO pin.
|
||||
class SN74HC595GPIOPin : public GPIOPin {
|
||||
public:
|
||||
SN74HC595GPIOPin(SN74HC595Component *parent, uint8_t pin, bool inverted = false);
|
||||
|
||||
void setup() override;
|
||||
bool digital_read() override;
|
||||
void digital_write(bool value) override;
|
||||
|
||||
protected:
|
||||
SN74HC595Component *parent_;
|
||||
};
|
||||
|
||||
} // namespace sn74hc595
|
||||
} // namespace esphome
|
|
@ -1187,13 +1187,13 @@ light:
|
|||
if (initial_run) {
|
||||
it[0] = current_color;
|
||||
}
|
||||
|
||||
|
||||
- wled:
|
||||
port: 11111
|
||||
|
||||
|
||||
- adalight:
|
||||
uart_id: adalight_uart
|
||||
|
||||
|
||||
- automation:
|
||||
name: Custom Effect
|
||||
sequence:
|
||||
|
@ -1465,6 +1465,14 @@ switch:
|
|||
id: my_stepper
|
||||
position: 0
|
||||
|
||||
- platform: gpio
|
||||
name: "SN74HC595 Pin #0"
|
||||
pin:
|
||||
sn74hc595: sn74hc595_hub
|
||||
# Use pin number 0
|
||||
number: 0
|
||||
inverted: False
|
||||
|
||||
fan:
|
||||
- platform: binary
|
||||
output: gpio_26
|
||||
|
@ -1715,3 +1723,11 @@ text_sensor:
|
|||
name: "BSSID"
|
||||
mac_address:
|
||||
name: "Mac Address"
|
||||
|
||||
sn74hc595:
|
||||
- id: 'sn74hc595_hub'
|
||||
data_pin: GPIO21
|
||||
clock_pin: GPIO23
|
||||
latch_pin: GPIO22
|
||||
oe_pin: GPIO32
|
||||
sr_count: 2
|
||||
|
|
Loading…
Reference in a new issue