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SSD1325 grayscale support (#1064)

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* SSD1325 grayscale support implemented

* Linted

* Fix garbage on display at power-up

* Rebase

* Linted

* Add brightness control, CS fixes

* Fix up SSD1327 init

* Add turn_on() and turn_off() methods

* Set brightness later in setup(), logging tweak

* Added is_on() method

* Added  grayscale image support

* Updated to use Color, 1327 GS fix
This commit is contained in:
Keith Burzinski 2020-07-09 19:53:49 -05:00 committed by GitHub
parent c693c219f4
commit 7fa98e288f
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
8 changed files with 129 additions and 86 deletions
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17
esphome/components/display/display_buffer.cpp
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@ -7,8 +7,8 @@ namespace display {
static const char *TAG = "display";
const Color COLOR_OFF = 0;
const Color COLOR_ON = 1;
const Color COLOR_OFF(0, 0, 0, 0);
const Color COLOR_ON(1, 1, 1, 1);
void DisplayBuffer::init_internal_(uint32_t buffer_length) {
this->buffer_ = new uint8_t[buffer_length];
@ -214,10 +214,10 @@ void DisplayBuffer::image(int x, int y, Color color, Image *image, bool invert)
this->draw_pixel_at(x + img_x, y + img_y, image->get_pixel(img_x, img_y) ? color : COLOR_OFF);
}
}
} else if (image->get_type() == GRAYSCALE4) {
} else if (image->get_type() == GRAYSCALE) {
for (int img_x = 0; img_x < image->get_width(); img_x++) {
for (int img_y = 0; img_y < image->get_height(); img_y++) {
this->draw_pixel_at(x + img_x, y + img_y, image->get_grayscale4_pixel(img_x, img_y));
this->draw_pixel_at(x + img_x, y + img_y, image->get_grayscale_pixel(img_x, img_y));
}
}
} else if (image->get_type() == RGB565) {
@ -457,14 +457,11 @@ int Image::get_color_pixel(int x, int y) const {
int color = (pgm_read_byte(this->data_start_ + pos) << 8) + (pgm_read_byte(this->data_start_ + pos + 1));
return color;
}
int Image::get_grayscale4_pixel(int x, int y) const {
Color Image::get_grayscale_pixel(int x, int y) const {
if (x < 0 || x >= this->width_ || y < 0 || y >= this->height_)
return 0;
const uint32_t pos = (x + y * this->width_) / 2;
// 2 = number of pixels per byte, 4 = pixel shift
uint8_t shift = (x % 2) * 4;
int color = (pgm_read_byte(this->data_start_ + pos) >> shift) & 0x0f;
return color;
const uint32_t pos = (x + y * this->width_);
return Color(pgm_read_byte(this->data_start_ + pos) << 24);
}
int Image::get_width() const { return this->width_; }
int Image::get_height() const { return this->height_; }

4
esphome/components/display/display_buffer.h
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@ -68,7 +68,7 @@ extern const Color COLOR_OFF;
/// Turn the pixel ON.
extern const Color COLOR_ON;
enum ImageType { BINARY = 0, GRAYSCALE4 = 1, RGB565 = 2 };
enum ImageType { BINARY = 0, GRAYSCALE = 1, RGB565 = 2 };
enum DisplayRotation {
DISPLAY_ROTATION_0_DEGREES = 0,
@ -385,7 +385,7 @@ class Image {
Image(const uint8_t *data_start, int width, int height, int type);
bool get_pixel(int x, int y) const;
int get_color_pixel(int x, int y) const;
int get_grayscale4_pixel(int x, int y) const;
Color get_grayscale_pixel(int x, int y) const;
int get_width() const;
int get_height() const;
ImageType get_type() const;

16
esphome/components/image/__init__.py
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@ -11,7 +11,7 @@ _LOGGER = logging.getLogger(__name__)
DEPENDENCIES = ['display']
MULTI_CONF = True
ImageType = {'binary': 0, 'grayscale4': 1, 'rgb565': 2}
ImageType = {'binary': 0, 'grayscale': 1, 'rgb565': 2}
Image_ = display.display_ns.class_('Image')
@ -41,20 +41,18 @@ def to_code(config):
image.thumbnail(config[CONF_RESIZE])
if CONF_TYPE in config:
if config[CONF_TYPE].startswith('GRAYSCALE4'):
if config[CONF_TYPE].startswith('GRAYSCALE'):
width, height = image.size
image = image.convert('L', dither=Image.NONE)
pixels = list(image.getdata())
data = [0 for _ in range(height * width // 2)]
data = [0 for _ in range(height * width)]
pos = 0
for pixnum, pix in enumerate(pixels):
pixshift = (pixnum % 2) * 4
data[pos] |= (pix >> 4) << pixshift
if pixshift != 0:
pos += 1
for pix in pixels:
data[pos] = pix
pos += 1
rhs = [HexInt(x) for x in data]
prog_arr = cg.progmem_array(config[CONF_RAW_DATA_ID], rhs)
cg.new_Pvariable(config[CONF_ID], prog_arr, width, height, ImageType['grayscale4'])
cg.new_Pvariable(config[CONF_ID], prog_arr, width, height, ImageType['grayscale'])
elif config[CONF_TYPE].startswith('RGB565'):
width, height = image.size
image = image.convert('RGB')

8
esphome/components/ssd1325_base/__init__.py
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@ -2,7 +2,8 @@ import esphome.codegen as cg
import esphome.config_validation as cv
from esphome import pins
from esphome.components import display
from esphome.const import CONF_EXTERNAL_VCC, CONF_LAMBDA, CONF_MODEL, CONF_RESET_PIN
from esphome.const import CONF_BRIGHTNESS, CONF_EXTERNAL_VCC, CONF_LAMBDA, CONF_MODEL, \
CONF_RESET_PIN
from esphome.core import coroutine
ssd1325_base_ns = cg.esphome_ns.namespace('ssd1325_base')
@ -22,12 +23,13 @@ SSD1325_MODEL = cv.enum(MODELS, upper=True, space="_")
SSD1325_SCHEMA = display.FULL_DISPLAY_SCHEMA.extend({
cv.Required(CONF_MODEL): SSD1325_MODEL,
cv.Optional(CONF_RESET_PIN): pins.gpio_output_pin_schema,
cv.Optional(CONF_BRIGHTNESS, default=1.0): cv.percentage,
cv.Optional(CONF_EXTERNAL_VCC): cv.boolean,
}).extend(cv.polling_component_schema('1s'))
@coroutine
def setup_ssd1036(var, config):
def setup_ssd1325(var, config):
yield cg.register_component(var, config)
yield display.register_display(var, config)
@ -35,6 +37,8 @@ def setup_ssd1036(var, config):
if CONF_RESET_PIN in config:
reset = yield cg.gpio_pin_expression(config[CONF_RESET_PIN])
cg.add(var.set_reset_pin(reset))
if CONF_BRIGHTNESS in config:
cg.add(var.init_brightness(config[CONF_BRIGHTNESS]))
if CONF_EXTERNAL_VCC in config:
cg.add(var.set_external_vcc(config[CONF_EXTERNAL_VCC]))
if CONF_LAMBDA in config:

142
esphome/components/ssd1325_base/ssd1325_base.cpp
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@ -8,7 +8,11 @@ namespace ssd1325_base {
static const char *TAG = "ssd1325";
static const uint8_t BLACK = 0;
static const uint8_t WHITE = 1;
static const uint8_t WHITE = 15;
static const uint8_t SSD1325_MAX_CONTRAST = 127;
static const uint8_t SSD1325_COLORMASK = 0x0f;
static const uint8_t SSD1325_COLORSHIFT = 4;
static const uint8_t SSD1325_PIXELSPERBYTE = 2;
static const uint8_t SSD1325_SETCOLADDR = 0x15;
static const uint8_t SSD1325_SETROWADDR = 0x75;
@ -33,6 +37,7 @@ static const uint8_t SSD1325_SETROWPERIOD = 0xB2;
static const uint8_t SSD1325_SETCLOCK = 0xB3;
static const uint8_t SSD1325_SETPRECHARGECOMP = 0xB4;
static const uint8_t SSD1325_SETGRAYTABLE = 0xB8;
static const uint8_t SSD1325_SETDEFAULTGRAYTABLE = 0xB9;
static const uint8_t SSD1325_SETPRECHARGEVOLTAGE = 0xBC;
static const uint8_t SSD1325_SETVCOMLEVEL = 0xBE;
static const uint8_t SSD1325_SETVSL = 0xBF;
@ -44,40 +49,57 @@ static const uint8_t SSD1325_COPY = 0x25;
void SSD1325::setup() {
this->init_internal_(this->get_buffer_length_());
this->command(SSD1325_DISPLAYOFF); /* display off */
this->command(SSD1325_SETCLOCK); /* set osc division */
this->command(0xF1); /* 145 */
this->command(SSD1325_SETMULTIPLEX); /* multiplex ratio */
this->command(SSD1325_DISPLAYOFF); // display off
this->command(SSD1325_SETCLOCK); // set osc division
this->command(0xF1); // 145
this->command(SSD1325_SETMULTIPLEX); // multiplex ratio
if (this->model_ == SSD1327_MODEL_128_128)
this->command(0x7f); // duty = height - 1
else
this->command(0x3f); // duty = 1/64
this->command(SSD1325_SETOFFSET); /* set display offset --- */
this->command(0x3f); // duty = 1/64
this->command(SSD1325_SETOFFSET); // set display offset
if (this->model_ == SSD1327_MODEL_128_128)
this->command(0x00); // 0
else
this->command(0x4C); // 76
this->command(SSD1325_SETSTARTLINE); /*set start line */
this->command(0x00); /* ------ */
this->command(SSD1325_MASTERCONFIG); /*Set Master Config DC/DC Converter*/
this->command(0x4C); // 76
this->command(SSD1325_SETSTARTLINE); // set start line
this->command(0x00); // ...
this->command(SSD1325_MASTERCONFIG); // Set Master Config DC/DC Converter
this->command(0x02);
this->command(SSD1325_SETREMAP); /* set segment remap------ */
this->command(SSD1325_SETREMAP); // set segment remapping
if (this->model_ == SSD1327_MODEL_128_128)
this->command(0x55); // 0x56 is flipped horizontally: enable column swap, disable nibble remap
this->command(0x53); // COM bottom-up, split odd/even, enable column and nibble remapping
else
this->command(0x56);
this->command(SSD1325_SETCURRENT + 0x2); /* Set Full Current Range */
this->command(0x50); // COM bottom-up, split odd/even
this->command(SSD1325_SETCURRENT + 0x2); // Set Full Current Range
this->command(SSD1325_SETGRAYTABLE);
this->command(0x01);
this->command(0x11);
this->command(0x22);
this->command(0x32);
this->command(0x43);
this->command(0x54);
this->command(0x65);
this->command(0x76);
this->command(SSD1325_SETCONTRAST); /* set contrast current */
this->command(0x7F); // max!
// gamma ~2.2
if (this->model_ == SSD1327_MODEL_128_128) {
this->command(0);
this->command(1);
this->command(2);
this->command(3);
this->command(6);
this->command(8);
this->command(12);
this->command(16);
this->command(20);
this->command(26);
this->command(32);
this->command(39);
this->command(46);
this->command(54);
this->command(63);
} else {
this->command(0x01);
this->command(0x11);
this->command(0x22);
this->command(0x32);
this->command(0x43);
this->command(0x54);
this->command(0x65);
this->command(0x76);
}
this->command(SSD1325_SETROWPERIOD);
this->command(0x51);
this->command(SSD1325_SETPHASELEN);
@ -87,22 +109,25 @@ void SSD1325::setup() {
this->command(SSD1325_SETPRECHARGECOMPENABLE);
this->command(0x28);
this->command(SSD1325_SETVCOMLEVEL); // Set High Voltage Level of COM Pin
this->command(0x1C); //?
this->command(SSD1325_SETVSL); // set Low Voltage Level of SEG Pin
this->command(0x1C);
this->command(SSD1325_SETVSL); // set Low Voltage Level of SEG Pin
this->command(0x0D | 0x02);
this->command(SSD1325_NORMALDISPLAY); /* set display mode */
this->command(SSD1325_DISPLAYON); /* display ON */
this->command(SSD1325_NORMALDISPLAY); // set display mode
set_brightness(this->brightness_);
this->fill(BLACK); // clear display - ensures we do not see garbage at power-on
this->display(); // ...write buffer, which actually clears the display's memory
this->turn_on(); // display ON
}
void SSD1325::display() {
this->command(SSD1325_SETCOLADDR); /* set column address */
this->command(0x00); /* set column start address */
this->command(0x3F); /* set column end address */
this->command(SSD1325_SETROWADDR); /* set row address */
this->command(0x00); /* set row start address */
this->command(SSD1325_SETCOLADDR); // set column address
this->command(0x00); // set column start address
this->command(0x3F); // set column end address
this->command(SSD1325_SETROWADDR); // set row address
this->command(0x00); // set row start address
if (this->model_ == SSD1327_MODEL_128_128)
this->command(0x7F); // 127 is last row
this->command(127); // set last row
else
this->command(0x3F); // 63 is last row
this->command(63); // set last row
this->write_display_data();
}
@ -110,6 +135,27 @@ void SSD1325::update() {
this->do_update_();
this->display();
}
void SSD1325::set_brightness(float brightness) {
// validation
if (brightness > 1)
this->brightness_ = 1.0;
else if (brightness < 0)
this->brightness_ = 0;
else
this->brightness_ = brightness;
// now write the new brightness level to the display
this->command(SSD1325_SETCONTRAST);
this->command(int(SSD1325_MAX_CONTRAST * (this->brightness_)));
}
bool SSD1325::is_on() { return this->is_on_; }
void SSD1325::turn_on() {
this->command(SSD1325_DISPLAYON);
this->is_on_ = true;
}
void SSD1325::turn_off() {
this->command(SSD1325_DISPLAYOFF);
this->is_on_ = false;
}
int SSD1325::get_height_internal() {
switch (this->model_) {
case SSD1325_MODEL_128_32:
@ -141,23 +187,25 @@ int SSD1325::get_width_internal() {
}
}
size_t SSD1325::get_buffer_length_() {
return size_t(this->get_width_internal()) * size_t(this->get_height_internal()) / 8u;
return size_t(this->get_width_internal()) * size_t(this->get_height_internal()) / SSD1325_PIXELSPERBYTE;
}
void HOT SSD1325::draw_absolute_pixel_internal(int x, int y, Color color) {
if (x >= this->get_width_internal() || x < 0 || y >= this->get_height_internal() || y < 0)
return;
uint16_t pos = x + (y / 8) * this->get_width_internal();
uint8_t subpos = y % 8;
if (color.is_on()) {
this->buffer_[pos] |= (1 << subpos);
} else {
this->buffer_[pos] &= ~(1 << subpos);
}
uint32_t color4 = color.to_grayscale4();
// where should the bits go in the big buffer array? math...
uint16_t pos = (x / SSD1325_PIXELSPERBYTE) + (y * this->get_width_internal() / SSD1325_PIXELSPERBYTE);
uint8_t shift = (x % SSD1325_PIXELSPERBYTE) * SSD1325_COLORSHIFT;
// ensure 'color4' is valid (only 4 bits aka 1 nibble) and shift the bits left when necessary
color4 = (color4 & SSD1325_COLORMASK) << shift;
// first mask off the nibble we must change...
this->buffer_[pos] &= (~SSD1325_COLORMASK >> shift);
// ...then lay the new nibble back on top. done!
this->buffer_[pos] |= color4;
}
void SSD1325::fill(Color color) {
uint8_t fill = color.is_on() ? 0xFF : 0x00;
const uint32_t color4 = color.to_grayscale4();
uint8_t fill = (color4 & SSD1325_COLORMASK) | ((color4 & SSD1325_COLORMASK) << SSD1325_COLORSHIFT);
for (uint32_t i = 0; i < this->get_buffer_length_(); i++)
this->buffer_[i] = fill;
}

7
esphome/components/ssd1325_base/ssd1325_base.h
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@ -26,6 +26,11 @@ class SSD1325 : public PollingComponent, public display::DisplayBuffer {
void set_model(SSD1325Model model) { this->model_ = model; }
void set_reset_pin(GPIOPin *reset_pin) { this->reset_pin_ = reset_pin; }
void set_external_vcc(bool external_vcc) { this->external_vcc_ = external_vcc; }
void init_brightness(float brightness) { this->brightness_ = brightness; }
void set_brightness(float brightness);
bool is_on();
void turn_on();
void turn_off();
float get_setup_priority() const override { return setup_priority::PROCESSOR; }
void fill(Color color) override;
@ -45,6 +50,8 @@ class SSD1325 : public PollingComponent, public display::DisplayBuffer {
SSD1325Model model_{SSD1325_MODEL_128_64};
GPIOPin *reset_pin_{nullptr};
bool external_vcc_{false};
bool is_on_{false};
float brightness_{1.0};
};
} // namespace ssd1325_base

2
esphome/components/ssd1325_spi/display.py
View File

@ -19,7 +19,7 @@ CONFIG_SCHEMA = cv.All(ssd1325_base.SSD1325_SCHEMA.extend({
def to_code(config):
var = cg.new_Pvariable(config[CONF_ID])
yield ssd1325_base.setup_ssd1036(var, config)
yield ssd1325_base.setup_ssd1325(var, config)
yield spi.register_spi_device(var, config)
dc = yield cg.gpio_pin_expression(config[CONF_DC_PIN])

19
esphome/components/ssd1325_spi/ssd1325_spi.cpp
View File

@ -21,9 +21,11 @@ void SPISSD1325::setup() {
void SPISSD1325::dump_config() {
LOG_DISPLAY("", "SPI SSD1325", this);
ESP_LOGCONFIG(TAG, " Model: %s", this->model_str_());
LOG_PIN(" CS Pin: ", this->cs_);
if (this->cs_)
LOG_PIN(" CS Pin: ", this->cs_);
LOG_PIN(" DC Pin: ", this->dc_pin_);
LOG_PIN(" Reset Pin: ", this->reset_pin_);
ESP_LOGCONFIG(TAG, " Initial Brightness: %.2f", this->brightness_);
ESP_LOGCONFIG(TAG, " External VCC: %s", YESNO(this->external_vcc_));
LOG_UPDATE_INTERVAL(this);
}
@ -48,20 +50,7 @@ void HOT SPISSD1325::write_display_data() {
this->cs_->digital_write(false);
delay(1);
this->enable();
for (uint16_t x = 0; x < this->get_width_internal(); x += 2) {
for (uint16_t y = 0; y < this->get_height_internal(); y += 8) { // we write 8 pixels at once
uint8_t left8 = this->buffer_[y * 16 + x];
uint8_t right8 = this->buffer_[y * 16 + x + 1];
for (uint8_t p = 0; p < 8; p++) {
uint8_t d = 0;
if (left8 & (1 << p))
d |= 0xF0;
if (right8 & (1 << p))
d |= 0x0F;
this->write_byte(d);
}
}
}
this->write_array(this->buffer_, this->get_buffer_length_());
if (this->cs_)
this->cs_->digital_write(true);
this->disable();