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Enable reverse display of the Max7219 digit (#1234)

Browse source 
* add reverse option

* Update max7219digit.cpp

adding space for formatting

* Update esphome/components/max7219digit/display.py

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Co-authored-by: Otto Winter <otto@otto-winter.com>

Co-authored-by: Otto Winter <otto@otto-winter.com>
This commit is contained in:
rspaargaren 2020-09-27 19:17:28 +02:00 committed by GitHub
parent 0e59243b83
commit 0ccfdd4711
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 10 additions and 1 deletions
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3
esphome/components/max7219digit/display.py
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@ -11,6 +11,7 @@ CONF_SCROLL_DWELL = 'scroll_dwell'
CONF_SCROLL_DELAY = 'scroll_delay'
CONF_SCROLL_ENABLE = 'scroll_enable'
CONF_SCROLL_MODE = 'scroll_mode'
CONF_REVERSE_ENABLE = 'reverse_enable'
SCROLL_MODES = {
'CONTINUOUS': 0,
@ -39,6 +40,7 @@ CONFIG_SCHEMA = display.BASIC_DISPLAY_SCHEMA.extend({
cv.Optional(CONF_SCROLL_SPEED, default='250ms'): cv.positive_time_period_milliseconds,
cv.Optional(CONF_SCROLL_DELAY, default='1000ms'): cv.positive_time_period_milliseconds,
cv.Optional(CONF_SCROLL_DWELL, default='1000ms'): cv.positive_time_period_milliseconds,
cv.Optional(CONF_REVERSE_ENABLE, default=False): cv.boolean,
}).extend(cv.polling_component_schema('500ms')).extend(spi.spi_device_schema(cs_pin_required=True))
@ -56,6 +58,7 @@ def to_code(config):
cg.add(var.set_scroll_delay(config[CONF_SCROLL_DELAY]))
cg.add(var.set_scroll(config[CONF_SCROLL_ENABLE]))
cg.add(var.set_scroll_mode(config[CONF_SCROLL_MODE]))
cg.add(var.set_reverse(config[CONF_REVERSE_ENABLE]))
if CONF_LAMBDA in config:
lambda_ = yield cg.process_lambda(config[CONF_LAMBDA], [(MAX7219ComponentRef, 'it')],

6
esphome/components/max7219digit/max7219digit.cpp
View file

@ -108,7 +108,11 @@ void MAX7219Component::display() {
// Send the data to the chip
for (uint8_t i = 0; i < this->num_chips_; i++) {
for (uint8_t j = 0; j < 8; j++) {
pixels[j] = this->max_displaybuffer_[i * 8 + j];
if (this->reverse_) {
pixels[j] = this->max_displaybuffer_[(this->num_chips_ - i - 1) * 8 + j];
} else {
pixels[j] = this->max_displaybuffer_[i * 8 + j];
}
}
this->send64pixels(i, pixels);
}

2
esphome/components/max7219digit/max7219digit.h
View file

@ -52,6 +52,7 @@ class MAX7219Component : public PollingComponent,
void set_scroll_delay(uint16_t delay) { this->scroll_delay_ = delay; };
void set_scroll(bool on_off) { this->scroll_ = on_off; };
void set_scroll_mode(uint8_t mode) { this->scroll_mode_ = mode; };
void set_reverse(bool on_off) { this->reverse_ = on_off; };
void send_char(byte chip, byte data);
void send64pixels(byte chip, const byte pixels[8]);
@ -87,6 +88,7 @@ class MAX7219Component : public PollingComponent,
uint8_t intensity_; /// Intensity of the display from 0 to 15 (most)
uint8_t num_chips_;
bool scroll_;
bool reverse_;
bool update_{false};
uint16_t scroll_speed_;
uint16_t scroll_delay_;