2019-04-17 10:15:52 -04:00
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# esp-idf-ssd1306
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2021-01-29 21:01:13 -05:00
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SSD1306/SH1106 driver for esp-idf
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2019-04-19 21:00:50 -04:00
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2019-07-11 11:30:32 -04:00
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I used [this](https://github.com/yanbe/ssd1306-esp-idf-i2c) repository as a reference.
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I used [this](https://github.com/dhepper/font8x8) font file.
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2019-04-21 00:28:48 -04:00
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2021-09-17 22:28:09 -04:00
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# Software requirements
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2024-08-22 01:21:23 -04:00
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ESP-IDF V5.0 or later.
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ESP-IDF V4.4 release branch reached EOL in July 2024.
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2023-01-29 00:54:57 -05:00
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2023-01-29 22:05:45 -05:00
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__Note for ESP32C2.__
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2023-01-29 00:54:57 -05:00
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ESP-IDF V5.0 ESP32C2 i2c driver has a bug.
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2023-06-19 08:03:09 -04:00
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ESP-IDF V5.1 is required when using i2c of ESP32C2.
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2021-09-17 22:28:09 -04:00
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2024-03-23 23:39:11 -04:00
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__Note for ESP32C6 and ESP32H2.__
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ESP-IDF V5.1 is required when using ESP32C6 and ESP32H2.
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2023-07-09 02:49:30 -04:00
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2024-03-23 19:14:25 -04:00
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__Note for ESP-IDF V5.2.__
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A new i2c driver is now available in ESP-IDF V5.2.
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2024-08-18 06:17:32 -04:00
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Under ESP-IDF V5.2 or later, this project uses a new i2c driver.
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2024-03-23 19:14:25 -04:00
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2022-06-06 22:52:21 -04:00
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# Installation
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2020-12-06 04:11:27 -05:00
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```
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git clone https://github.com/nopnop2002/esp-idf-ssd1306
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2022-04-26 02:21:29 -04:00
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cd esp-idf-ssd1306/TextDemo/
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2024-03-23 23:32:06 -04:00
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idf.py set-target {esp32/esp32s2/esp32s3/esp32c2/esp32c3/esp32c6/esp32h2}
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2021-07-26 20:34:50 -04:00
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idf.py menuconfig
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idf.py flash
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```
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2022-11-05 21:25:51 -04:00
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__Note for ESP32C3__
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2022-01-07 06:29:05 -05:00
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For some reason, there are development boards that cannot use GPIO06, GPIO08, GPIO09, GPIO19 for SPI clock pins.
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According to the ESP32C3 specifications, these pins can also be used as SPI clocks.
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I used a raw ESP-C3-13 to verify that these pins could be used as SPI clocks.
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2021-09-17 22:31:50 -04:00
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2021-07-26 20:34:50 -04:00
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# Configuration
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2019-04-19 20:44:55 -04:00
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You have to set this config value with menuconfig.
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2020-02-06 17:18:59 -05:00
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- CONFIG_INTERFACE
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- CONFIG_PANEL
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2021-01-30 11:23:39 -05:00
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- CONFIG_OFFSETX
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2021-04-23 21:15:14 -04:00
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- CONFIG_FLIP
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2020-02-06 17:18:59 -05:00
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- CONFIG_SDA_GPIO
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- CONFIG_SCL_GPIO
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- CONFIG_RESET_GPIO
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2020-12-06 04:11:27 -05:00
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- CONFIG_MOSI_GPIO
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- CONFIG_SCLK_GPIO
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2020-02-06 17:18:59 -05:00
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- CONFIG_CS_GPIO
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- CONFIG_DC_GPIO
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2019-04-19 20:44:55 -04:00
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2019-04-19 21:08:43 -04:00
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2020-12-06 04:11:27 -05:00
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2019-04-19 20:44:55 -04:00
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---
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2021-01-29 20:57:39 -05:00
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# Generic SSD1306 128x32 i2c
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2019-04-19 20:44:55 -04:00
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2023-07-24 17:18:04 -04:00
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2019-04-19 20:44:55 -04:00
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2021-01-29 20:57:39 -05:00
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# Generic SSD1306 128x64 i2c
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2019-04-19 20:44:55 -04:00
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2023-07-24 17:18:04 -04:00
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2019-04-19 20:44:55 -04:00
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2021-01-29 20:57:39 -05:00
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# Generic SH1106 128x64 i2c
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2024-08-28 19:24:00 -04:00
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Many sellers sell SH1106 as SSD1306.
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__SH1106 does not support hardware scrolling.__
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2021-01-29 21:01:13 -05:00
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Left:1.3 inch SH1106
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2021-01-29 21:02:37 -05:00
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Right:0.96 inch SSD1306
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2021-01-29 21:01:13 -05:00
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2021-01-29 20:57:39 -05:00
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2023-07-24 17:18:04 -04:00
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2021-01-29 20:57:39 -05:00
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2021-01-30 11:26:28 -05:00
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# 128x64 TTGO
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2021-07-26 20:56:09 -04:00
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Unlike other ESP32 development boards, the RTC_CLOCK crystal on this board uses a 26MHz one.
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2024-08-11 16:59:19 -04:00
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You need to change the Main XTAL frequency to 26MHz using menuconfig.
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2019-04-19 20:44:55 -04:00
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2023-07-24 17:18:04 -04:00
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2024-08-11 16:59:19 -04:00
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2019-04-19 20:44:55 -04:00
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2021-01-30 11:26:28 -05:00
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# 128x64 ESP-WROOM-32
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2019-05-02 04:17:33 -04:00
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2023-07-24 17:18:04 -04:00
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2021-01-29 20:57:39 -05:00
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---
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# Generic SSD1306 128x32 SPI
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2022-11-18 17:50:20 -05:00
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2019-05-02 04:17:33 -04:00
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2021-01-29 20:57:39 -05:00
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# Generic SSD1306 128x64 SPI
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2020-12-06 04:14:27 -05:00
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D0 is SCLK.
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D1 is MOSI.
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2019-04-19 20:44:55 -04:00
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2019-04-27 00:13:57 -04:00
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2022-11-18 17:50:20 -05:00
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2019-04-19 20:44:55 -04:00
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2021-01-29 20:57:39 -05:00
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# Generic SH1106 128x64 SPI
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2024-08-28 19:24:00 -04:00
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Many sellers sell SH1106 as SSD1306.
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__SH1106 does not support hardware scrolling.__
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2021-01-29 21:01:13 -05:00
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Left:1.3 inch SH1106
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2021-01-29 21:02:37 -05:00
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Right:0.96 inch SSD1306
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2021-01-29 20:57:39 -05:00
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2022-11-18 17:50:20 -05:00
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---
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2024-03-25 09:28:55 -04:00
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# I2C Clock speed
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According to the SSD1306 datasheet, the minimum i2c clock cycle time is 2.5us.
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Therefore, the maximum i2c clock frequency is 400KHz.
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The i2c clock frequency used by this project is 400KHz.
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2023-07-24 17:18:04 -04:00
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# I2C Port selection
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2023-07-24 17:21:29 -04:00
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2023-07-24 17:18:04 -04:00
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2024-03-23 19:26:33 -04:00
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The ESP32 XTENSA series has two I2C Ports.
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2023-07-24 17:18:04 -04:00
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You can use these two ports freely.
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If you use this module at the same time as another I2C device using I2C port 0, you must change it to I2C port 1.
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---
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2024-03-25 09:28:55 -04:00
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# SPI Clock speed
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According to the SSD1306 datasheet, the minimum SPI clock cycle time is 100ns.
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Therefore, the maximum SPI clock frequency is 10MHz.
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The SPI clock frequency used by this project is 1MHz.
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Higher SPI clock frequencies can be specified using ```spi_clock_speed()```.
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2024-03-25 09:31:06 -04:00
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When using 10MHz, you need to be careful about the length of the wire cable.
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2024-03-25 09:28:55 -04:00
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```
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//int speed = 1000000; // 1MHz
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//int speed = 2000000; // 2MHz
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//int speed = 4000000; // 4MHz
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//int speed = 6000000; // 6MHz
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//int speed = 8000000; // 8MHz
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int speed = 10000000; // 10MHz
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spi_clock_speed(speed);
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spi_master_init(&dev, CONFIG_MOSI_GPIO, CONFIG_SCLK_GPIO, CONFIG_CS_GPIO, CONFIG_DC_GPIO, CONFIG_RESET_GPIO);
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```
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2022-11-18 17:50:20 -05:00
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# SPI BUS selection
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2024-03-23 19:26:33 -04:00
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The ESP32 XTENSA series has three SPI BUSs.
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2022-11-18 17:50:20 -05:00
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SPI1_HOST is used for communication with Flash memory.
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You can use SPI2_HOST and SPI3_HOST freely.
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When you use SDSPI(SD Card via SPI), SDSPI uses SPI2_HOST BUS.
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When using this module at the same time as SDSPI or other SPI device using SPI2_HOST, it needs to be changed to SPI3_HOST.
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When you don't use SDSPI, both SPI2_HOST and SPI3_HOST will work.
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Previously it was called HSPI_HOST / VSPI_HOST, but now it is called SPI2_HOST / SPI3_HOST.
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2021-01-30 11:23:39 -05:00
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2021-04-23 21:15:14 -04:00
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---
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# Flip upside down
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2021-01-29 18:51:53 -05:00
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