Issues trying to get a SSD1306 to display text #128
Comments
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Hmmm, I only had an SPI-based SSD1306 to test, and since both used kind of the same protocol I though both would work, but apparently not. Could you set your logger level to |
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I tried a very_verbose logger on the SSD1306 i2c, and here is a part of what came out (mainly it's repeated over and over):
|
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Oh wow, thanks! I think I just found at least one issue (and I have no clue why this would only show up with i2c, not spi) - In my implementation, I had the bytes for display on (0xAF) and off (0xAE) switched around. So when the display should turn on, it would be turned off :( I have created a patch locally, but I will look at more of your log to see if there are any other issues. In the meantime, could you try setting esphomeyaml:
# ...
esphomelib_version: devand seeing if it works already? |
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I used you help in changing the yaml file to capture the verbose logs. I am now getting a series of dots on the display but it is not any data, and the esp stops running with an error. esphomeyaml:
name: oledoffice
esphomelib_version: dev
platform: ESP8266
board: d1_mini_pro
wifi:
ssid: 'xxxx'
password: 'xxxxx'
mqtt:
broker: '192.168.1.xx
username: 'xx'
password: 'xx'
# Enable logging
logger:
level: very_verboseVerbose mode can be enabled via `-v, --verbose` option
PLATFORM: Espressif 8266 > WeMos D1 mini Pro
SYSTEM: ESP8266 80MHz 80KB RAM (16MB Flash)
Library Dependency Finder -> http://bit.ly/configure-pio-ldf
LDF MODES: FINDER(chain) COMPATIBILITY(soft)
Collected 38 compatible libraries
Scanning dependencies...
Dependency Graph
|-- <ArduinoOTA> 1.0
| |-- <ESP8266mDNS>
| | |-- <ESP8266WiFi> 1.0
| |-- <ESP8266WiFi> 1.0
|-- <ESP8266WiFi> 1.0
|-- <ESP8266mDNS>
| |-- <ESP8266WiFi> 1.0
|-- <Hash> 1.0
|-- <Wire> 1.0
|-- <esphomelib> 1.8.0 #e095235
| |-- <AsyncMqttClient> 0.8.2
| | |-- <ESPAsyncTCP> 1.2.0
| | | |-- <ESP8266WiFi> 1.0
| |-- <ArduinoJson-esphomelib> 5.13.3
| |-- <ESP Async WebServer> 1.1.1
| | |-- <ESPAsyncTCP> 1.2.0
| | | |-- <ESP8266WiFi> 1.0
| | |-- <Hash> 1.0
| | |-- <ESP8266WiFi> 1.0
| | |-- <ArduinoJson-esphomelib> 5.13.3
| |-- <FastLED> 3.2.0 #d27bac9
| | |-- <EspSoftwareSerial> 3.4.1
| |-- <ArduinoOTA> 1.0
| | |-- <ESP8266mDNS>
| | | |-- <ESP8266WiFi> 1.0
| | |-- <ESP8266WiFi> 1.0
| |-- <ESP8266WiFi> 1.0
| |-- <Wire> 1.0
| |-- <ESP8266mDNS>
| | |-- <ESP8266WiFi> 1.0
Retrieving maximum program size .pioenvs/oledoffice/firmware.elf
Checking size .pioenvs/oledoffice/firmware.elf
Memory Usage -> http://bit.ly/pio-memory-usage
DATA: [===== ] 52.1% (used 42648 bytes from 81920 bytes)
PROGRAM: [==== ] 36.0% (used 375720 bytes from 1044464 bytes)
Configuring upload protocol...
Looking for upload port...
Use manually specified: /dev/cu.SLAB_USBtoUART
Uploading .pioenvs/oledoffice/firmware.bin
warning: serialport_set_baudrate: baud rate 921600 may not work
Uploading 379872 bytes from .pioenvs/oledoffice/firmware.bin to flash at 0x00000000
................................................................................ [ 21% ]
................................................................................ [ 43% ]
................................................................................ [ 64% ]
................................................................................ [ 86% ]
................................................... [ 100% ]
====================================================================================================== [SUCCESS] Took 22.71 seconds ======================================================================================================
INFO [esphomeyaml.__main__] Successfully uploaded program.
INFO [esphomeyaml.__main__] Starting log output from /dev/cu.SLAB_USBtoUART with baud rate 115200
[13:11:58]10100 (0x14)
[13:11:58][VV][i2c:084]: Transmission ended. Status code: 0x00
[13:11:58][VV][i2c:079]: Beginning Transmission to 0x3C:
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:117]: Writing 0b00100000 (0x20)
[13:11:58][VV][i2c:084]: Transmission ended. Status code: 0x00
[13:11:58][VV][i2c:079]: Beginning Transmission to 0x3C:
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:084]: Transmission ended. Status code: 0x00
[13:11:58][VV][i2c:079]: Beginning Transmission to 0x3C:
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:117]: Writing 0b10100001 (0xA1)
[13:11:58][VV][i2c:084]: Transmission ended. Status code: 0x00
[13:11:58][VV][i2c:079]: Beginning Transmission to 0x3C:
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:117]: Writing 0b11001000 (0xC8)
[13:11:58][VV][i2c:084]: Transmission ended. Status code: 0x00
[13:11:58][VV][i2c:079]: Beginning Transmission to 0x3C:
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:117]: Writing 0b11011010 (0xDA)
[13:11:58][VV][i2c:084]: Transmission ended. Status code: 0x00
[13:11:58][VV][i2c:079]: Beginning Transmission to 0x3C:
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:117]: Writing 0b00010010 (0x12)
[13:11:58][VV][i2c:084]: Transmission ended. Status code: 0x00
[13:11:58][VV][i2c:079]: Beginning Transmission to 0x3C:
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:117]: Writing 0b10000001 (0x81)
[13:11:58][VV][i2c:084]: Transmission ended. Status code: 0x00
[13:11:58][VV][i2c:079]: Beginning Transmission to 0x3C:
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:117]: Writing 0b11001111 (0xCF)
[13:11:58][VV][i2c:084]: Transmission ended. Status code: 0x00
[13:11:58][VV][i2c:079]: Beginning Transmission to 0x3C:
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:117]: Writing 0b11011001 (0xD9)
[13:11:58][VV][i2c:084]: Transmission ended. Status code: 0x00
[13:11:58][VV][i2c:079]: Beginning Transmission to 0x3C:
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:117]: Writing 0b11110001 (0xF1)
[13:11:58][VV][i2c:084]: Transmission ended. Status code: 0x00
[13:11:58][VV][i2c:079]: Beginning Transmission to 0x3C:
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:117]: Writing 0b11011011 (0xDB)
[13:11:58][VV][i2c:084]: Transmission ended. Status code: 0x00
[13:11:58][VV][i2c:079]: Beginning Transmission to 0x3C:
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:117]: Writing 0b01000000 (0x40)
[13:11:58][VV][i2c:084]: Transmission ended. Status code: 0x00
[13:11:58][VV][i2c:079]: Beginning Transmission to 0x3C:
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:117]: Writing 0b10100100 (0xA4)
[13:11:58][VV][i2c:084]: Transmission ended. Status code: 0x00
[13:11:58][VV][i2c:079]: Beginning Transmission to 0x3C:
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:117]: Writing 0b10100110 (0xA6)
[13:11:58][VV][i2c:084]: Transmission ended. Status code: 0x00
[13:11:58][VV][i2c:079]: Beginning Transmission to 0x3C:
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:117]: Writing 0b00101110 (0x2E)
[13:11:58][VV][i2c:084]: Transmission ended. Status code: 0x00
[13:11:58][VV][i2c:079]: Beginning Transmission to 0x3C:
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:117]: Writing 0b10101111 (0xAF)
[13:11:58][VV][i2c:084]: Transmission ended. Status code: 0x00
[13:11:58][C][component:243]: Update interval: 5000ms
[13:11:58][V][component:062]: set_interval(name='update', interval=5000, offset=188)
[13:11:58][C][time.sntp:041]: Setting up SNTP...
[13:11:58][C][wifi:031]: Setting up WiFi...
[13:11:58][I][wifi:239]: WiFi Connecting to 'Lust'...
[13:11:58][C][wifi:256]: STA Hostname: 'oledoffice'
[13:11:58][VV][component:136]: Running interval 'update':0 with interval=5000 last_execution=3178 (now=8388)
[13:11:58][VV][i2c:079]: Beginning Transmission to 0x3C:
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:117]: Writing 0b00100001 (0x21)
[13:11:58][VV][i2c:084]: Transmission ended. Status code: 0x00
[13:11:58][VV][i2c:079]: Beginning Transmission to 0x3C:
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:084]: Transmission ended. Status code: 0x00
[13:11:58][VV][i2c:079]: Beginning Transmission to 0x3C:
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:117]: Writing 0b01111111 (0x7F)
[13:11:58][VV][i2c:084]: Transmission ended. Status code: 0x00
[13:11:58][VV][i2c:079]: Beginning Transmission to 0x3C:
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:117]: Writing 0b00100010 (0x22)
[13:11:58][VV][i2c:084]: Transmission ended. Status code: 0x00
[13:11:58][VV][i2c:079]: Beginning Transmission to 0x3C:
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:084]: Transmission ended. Status code: 0x00
[13:11:58][VV][i2c:079]: Beginning Transmission to 0x3C:
[13:11:58][VV][i2c:117]: Writing 0b00000000 (0x00)
[13:11:58][VV][i2c:117]: Writing 0b00000111 (0x07)
[13:11:58][VV][i2c:084]: Transmission ended. Status code: 0x00
[13:11:58][VV][i2c:079]: Beginning Transmission to 0x3C:
// Collapsed... |
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@rlust Yes the error is expected. The very verbose logs are dumping too much data which triggers the hardware watchdog. What happens with just debug logs? The dots you're seeing could be a sign it is finally working. Thanks for the help! |
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Unfortunately it hasn't worked with |
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@mssaleh Same thing, the debug logs are spamming the esp so much that it triggers the watchdog. "Soft WDT reset" |
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I restored
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@OttoWinter It works! I had a similar issue using only one i2c device, an integrated SSD1306 display (ttgo-lora32-v1). Once I adding @mssaleh I'm not sure why, but I don't believe the Without manually sending reset With manual reset (change 16 to match the PIN you are using) // Reset OLED display
pinMode(16, OUTPUT);
digitalWrite(16, LOW);
delay(50);
digitalWrite(16, HIGH);Also, I added this just after // Update display
display_i2cssd1306->rectangle(0, 0, display_i2cssd1306->get_width(), display_i2cssd1306->get_height());
display_i2cssd1306->update(); |
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It looks like the I'm not a developer by any means, so use the following with caution, but the following patch seemed to work for me. --- D:\code\ESP32\esphomeyaml\ttgo2\.piolibdeps\esphomelib\src\esphomelib\display\ssd1306.cpp 2018-09-27 19:00:48.000000000 -0400
+++ D:\code\ESP32\esphomeyaml\ttgo3\.piolibdeps\esphomelib\src\esphomelib\display\ssd1306.cpp 2018-09-27 20:07:47.000000000 -0400
@@ -41,23 +41,12 @@
static const uint8_t SSD1306_NORMAL_DISPLAY = 0xA6;
void SSD1306::setup() {
this->init_internal_(this->get_buffer_length_());
- if (this->reset_pin_ != nullptr) {
- this->reset_pin_->setup();
- this->reset_pin_->digital_write(true);
- delay(1);
- // Trigger Reset
- this->reset_pin_->digital_write(false);
- delay(10);
- // Wake up
- this->reset_pin_->digital_write(true);
- }
-
this->command(SSD1306_COMMAND_DISPLAY_OFF);
this->command(SSD1306_COMMAND_SET_DISPLAY_CLOCK_DIV);
this->command(0x80); // suggested ratio
this->command(SSD1306_COMMAND_SET_MULTIPLEX);
this->command(this->get_height_internal_() - 1);
@@ -234,12 +223,23 @@
return true;
}
void SPISSD1306::setup() {
ESP_LOGCONFIG(TAG, "Setting up SPI SSD1306...");
this->spi_setup();
this->dc_pin_->setup(); // OUTPUT
+
+ if (this->reset_pin_ != nullptr) {
+ this->reset_pin_->setup();
+ this->reset_pin_->digital_write(true);
+ delay(1);
+ // Trigger Reset
+ this->reset_pin_->digital_write(false);
+ delay(10);
+ // Wake up
+ this->reset_pin_->digital_write(true);
+ }
SSD1306::setup();
}
void SPISSD1306::command(uint8_t value) {
this->dc_pin_->digital_write(false);
this->enable();
@@ -275,12 +275,23 @@
}
#endif
#ifdef USE_I2C
void I2CSSD1306::setup() {
ESP_LOGCONFIG(TAG, "Setting up I2C SSD1306...");
+
+ if (this->reset_pin_ != nullptr) {
+ this->reset_pin_->setup();
+ this->reset_pin_->digital_write(true);
+ delay(1);
+ // Trigger Reset
+ this->reset_pin_->digital_write(false);
+ delay(10);
+ // Wake up
+ this->reset_pin_->digital_write(true);
+ }
this->parent_->begin_transmission_(this->address_);
if (!this->parent_->end_transmission_(this->address_)) {
ESP_LOGE(TAG, "Communication with SSD1306 failed!");
this->mark_failed();
return;P.S.: Thanks for this amazing project! I've been toying around to create a similar framework using ESP-IDF, but this project blows it out of the water! Good work 👍 :) |
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The SSD1306 I2C I have only has four pins, and does not have a reset pin. I removed the reset pin i2c define. Would that cause a problem? |
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Hey @rlust -- not sure, the SSD1306 I'm using is integrated on the ESP32 I'm using. However, regardless if you are using SPI or I2C, it looks like the pinouts always require an RST pin which is needed to enable the display. I found a write-up for an Adafruit SSD1306 which has pinouts for both I2C and SPI. Good luck! https://learn.adafruit.com/monochrome-oled-breakouts/wiring-128x64-oleds |
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Well, I got a little carried away, and kept playing with the new Display logic... many hours later, it seems to be working quite well! I'm sure I'll regret not going to be earlier tomorrow, but it's hard to stop ;) It appears Here's the git diffs for each based on esphomeyaml diff --git a/esphomeyaml/components/display/ssd1306_i2c.py b/esphomeyaml/components/display/ssd1306_i2c.py
index 7e04082..0347204 100644
--- a/esphomeyaml/components/display/ssd1306_i2c.py
+++ b/esphomeyaml/components/display/ssd1306_i2c.py
@@ -4,12 +4,13 @@ import esphomeyaml.config_validation as cv
from esphomeyaml import pins
from esphomeyaml.components import display
from esphomeyaml.components.display import ssd1306_spi
-from esphomeyaml.const import CONF_ADDRESS, CONF_EXTERNAL_VCC, CONF_ID, CONF_MODEL, CONF_RESET_PIN
-from esphomeyaml.helpers import App, Pvariable, add, gpio_output_pin_expression
+from esphomeyaml.const import CONF_ADDRESS, CONF_EXTERNAL_VCC, CONF_ID, CONF_MODEL, CONF_RESET_PIN, CONF_LAMBDA
+from esphomeyaml.helpers import App, Pvariable, add, gpio_output_pin_expression, process_lambda
DEPENDENCIES = ['i2c']
I2CSSD1306 = display.display_ns.I2CSSD1306
+I2CSSD1306Ref = I2CSSD1306.operator('ref')
PLATFORM_SCHEMA = display.FULL_DISPLAY_PLATFORM_SCHEMA.extend({
cv.GenerateID(): cv.declare_variable_id(I2CSSD1306),
@@ -21,7 +22,8 @@ PLATFORM_SCHEMA = display.FULL_DISPLAY_PLATFORM_SCHEMA.extend({
def to_code(config):
- ssd = Pvariable(config[CONF_ID], App.make_i2c_ssd1306())
+ rhs = App.make_i2c_ssd1306();
+ ssd = Pvariable(config[CONF_ID], rhs)
add(ssd.set_model(ssd1306_spi.MODELS[config[CONF_MODEL]]))
if CONF_RESET_PIN in config:
@@ -32,6 +34,10 @@ def to_code(config):
add(ssd.set_external_vcc(config[CONF_EXTERNAL_VCC]))
if CONF_ADDRESS in config:
add(ssd.set_address(config[CONF_ADDRESS]))
+ if CONF_LAMBDA in config:
+ for lambda_ in process_lambda(config[CONF_LAMBDA], [(I2CSSD1306Ref, 'it')]):
+ yield
+ add(ssd.set_writer(lambda_))
display.setup_display(ssd, config)esphomelib diff --git a/src/esphomelib/display/ssd1306.cpp b/src/esphomelib/display/ssd1306.cpp
index 43f9c11..5c3a302 100644
--- a/src/esphomelib/display/ssd1306.cpp
+++ b/src/esphomelib/display/ssd1306.cpp
@@ -12,6 +12,7 @@
#include "esphomelib/display/ssd1306.h"
#include "esphomelib/log.h"
+#include "ssd1306.h"
ESPHOMELIB_NAMESPACE_BEGIN
@@ -44,17 +45,6 @@ static const uint8_t SSD1306_NORMAL_DISPLAY = 0xA6;
void SSD1306::setup() {
this->init_internal_(this->get_buffer_length_());
- if (this->reset_pin_ != nullptr) {
- this->reset_pin_->setup();
- this->reset_pin_->digital_write(true);
- delay(1);
- // Trigger Reset
- this->reset_pin_->digital_write(false);
- delay(10);
- // Wake up
- this->reset_pin_->digital_write(true);
- }
-
this->command(SSD1306_COMMAND_DISPLAY_OFF);
this->command(SSD1306_COMMAND_SET_DISPLAY_CLOCK_DIV);
this->command(0x80); // suggested ratio
@@ -238,8 +228,22 @@ void SPISSD1306::setup() {
this->spi_setup();
this->dc_pin_->setup(); // OUTPUT
+ if (this->reset_pin_ != nullptr) {
+ this->reset_pin_->setup();
+ this->reset_pin_->digital_write(true);
+ delay(1);
+ // Trigger Reset
+ this->reset_pin_->digital_write(false);
+ delay(10);
+ // Wake up
+ this->reset_pin_->digital_write(true);
+ }
+
SSD1306::setup();
}
+void SPISSD1306::set_writer(spissd_writer_t &&writer) {
+ this->writer_ = std::move(writer);
+}
void SPISSD1306::command(uint8_t value) {
this->dc_pin_->digital_write(false);
this->enable();
@@ -273,12 +277,28 @@ SPISSD1306::SPISSD1306(SPIComponent *parent, GPIOPin *cs, GPIOPin *dc_pin, uint3
bool SPISSD1306::high_speed() {
return true;
}
+void SPISSD1306::update() {
+ if (this->writer_.has_value())
+ (*this->writer_)(*this);
+ SSD1306::update();
+}
#endif
#ifdef USE_I2C
void I2CSSD1306::setup() {
ESP_LOGCONFIG(TAG, "Setting up I2C SSD1306...");
+ if (this->reset_pin_ != nullptr) {
+ this->reset_pin_->setup();
+ this->reset_pin_->digital_write(true);
+ delay(1);
+ // Trigger Reset
+ this->reset_pin_->digital_write(false);
+ delay(10);
+ // Wake up
+ this->reset_pin_->digital_write(true);
+ }
+
this->parent_->begin_transmission_(this->address_);
if (!this->parent_->end_transmission_(this->address_)) {
ESP_LOGE(TAG, "Communication with SSD1306 failed!");
@@ -288,6 +308,9 @@ void I2CSSD1306::setup() {
SSD1306::setup();
}
+void I2CSSD1306::set_writer(i2cssd_writer_t &&writer) {
+ this->writer_ = std::move(writer);
+}
void I2CSSD1306::command(uint8_t value) {
this->write_byte(0x00, value);
}
@@ -314,6 +337,11 @@ void I2CSSD1306::write_display_data() {
}
}
}
+void I2CSSD1306::update() {
+ if (this->writer_.has_value())
+ (*this->writer_)(*this);
+ SSD1306::update();
+}
I2CSSD1306::I2CSSD1306(I2CComponent *parent, uint32_t update_interval)
: I2CDevice(parent, 0x3C), SSD1306(update_interval) {}
#endif
diff --git a/src/esphomelib/display/ssd1306.h b/src/esphomelib/display/ssd1306.h
index 3cd1bb7..eef89d6 100644
--- a/src/esphomelib/display/ssd1306.h
+++ b/src/esphomelib/display/ssd1306.h
@@ -65,10 +65,14 @@ class SSD1306 : public PollingComponent, public DisplayBuffer {
};
#ifdef USE_SPI
+class SPISSD1306;
+
+using spissd_writer_t = std::function<void(SPISSD1306 &)>;
+
class SPISSD1306 : public SSD1306, public SPIDevice {
public:
SPISSD1306(SPIComponent *parent, GPIOPin *cs, GPIOPin *dc_pin, uint32_t update_interval = 1000);
-
+ void update() override;
void setup() override;
protected:
@@ -79,17 +83,25 @@ class SPISSD1306 : public SSD1306, public SPIDevice {
bool high_speed() override;
GPIOPin *dc_pin_;
+ optional<spissd_writer_t> writer_{};
};
#endif
#ifdef USE_I2C
+class I2CSSD1306;
+
+using i2cssd_writer_t = std::function<void(I2CSSD1306 &)>;
+
class I2CSSD1306 : public SSD1306, public I2CDevice {
public:
I2CSSD1306(I2CComponent *parent, uint32_t update_interval = 1000);
+ void set_writer(i2cssd_writer_t &&writer);
void setup() override;
+ void update() override;
protected:
void command(uint8_t value) override;
void write_display_data() override;
+ optional<i2cssd_writer_t> writer_{};
};
#endif
myconfig.yaml esphomeyaml:
name: ttgo3
platform: ESP32
board: ttgo-lora32-v1
esphomelib_version: dev
wifi:
ssid: 'XXXXXXX'
password: 'XXXXXXXXXXXXXX'
mqtt:
broker: 'XXXXXXXXXXXXXXXXX'
port: XXXX
username: 'XXXXX'
password: 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX'
logger:
level: VERY_VERBOSE
logs:
i2c: DEBUG
spi: DEBUG
ota:
i2c:
sda: GPIO4
scl: GPIO15
scan: false
frequency: 700khz
font:
- file: 'Lato-Regular.ttf'
id: my_font
size: 10
display:
- platform: ssd1306_i2c
model: "SSD1306 128x64"
reset_pin: GPIO16
address: 0x3C
update_interval: 5s
lambda: |-
// Clear display (not sure if this is needed?)
it.fill(0);
// Current time, random location (like a screensaver)
it.strftime(rand()%(20), rand()%(51), id(my_font), "%Y-%m-%d %H:%M:%S", id(sntp_time).now());
time:
- platform: sntp
id: sntp_time
timezone: 'EST+5EDT,M3.2.0/2,M11.1.0/2'
servers:
- 0.ca.pool.ntp.org
- 1.ca.pool.ntp.org
- 2.ca.pool.ntp.org |
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@guardmedia Thank you very much for taking your time to fix this. It's very much appreciated! I've created the PRs #132 and esphome/esphome-core#159 to fix the issue as per your diffs (cleaned up a little bit). The first issue, esphomeyaml not including the For the RESET pin issue: That's really interesting. It seems like when the RESET pin is not pulled high it won't even accept any i2c data (so a full shutdown). The reason @mssaleh doesn't have a RESET pin is because well that pin is quite unnecessary. If the breakout board the SSD1306 is mounted on has a small pull-up resistor to VCC, there's no external RESET pin necessary. Also, the SPI component fortunately didn't suffer from this either because it doesn't do any communication before the reset initialization code 😆 I will merge the mentioned PRs when I get time to test with my SPI setup again. |
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I am super happy to have this in esphome, I have a Wemos clone with integrated SSD1306 that I have been putting off converting over from micropython due to lack of support for the LCD! |
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@OttoWinter Just ran a test with a clean Thanks again! |
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What a great and speedy effort! I also can confirm that i2c display now works perfectly with this fix (including using lambda). Many thanks to @OttoWinter, @guardmedia and everyone else involved in this wonderful piece of software! |
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thanks what's work for me ! |
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Ok, that's great. I'll close this issue now and hopefully release 1.8.2 in the next few days. |
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Great news, I got an e-paper module and I am able to display text now! Thanks for the work OttoWinter! If anyone has the code working to display the values from a DHT temperature sensor I would love to see an example. Love the increase of functionality of the software and ease of use!! |
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Ok I figured it out: There is a slight error in the example code for temp sensor, it is missing a f after the "Temperature %.2fC and I cannot get the degree symbol to display. sensor:
- platform: dht
pin: GPIO27
temperature:
name: 'Display temperature'
id: temperature
humidity:
name: 'Display humidity'
id: humidity
model: AM2302
update_interval: 15sit.print(0, 0, id(my_font), "Hello Randy welcome to my World!");
it.strftime(0, 20, id(my_font), "%Y-%m-%d %H:%M:%S", id(sntp_time).now());
it.printf(0, 45, id(my_font), "Temperature %.2fC, Humidity %.1f%%", id(temperature).value, id(humidity).value);font:
- file: 'Comic Sans MS.ttf'
id: my_font
size: 14 |
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@rlust Thanks, I'll update that. For the degree symbol: What exactly doesn't work? Does it not compiled, does it not show up, or what is it? |
I have a D1 mini pro that was working displaying text, and now I am trying to get it working on esphomeyaml.
I am not getting anything to display. I need to know if I am missing something.
The display component is a very exciting addition to this great software!
I am using the following code:
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