From f7e8fcede382407ffc616f18ffaffb81235e7d26 Mon Sep 17 00:00:00 2001 From: Daniel Friesel Date: Sun, 11 Apr 2021 12:44:47 +0200 Subject: Add SSD1306 OLED display driver --- src/driver/Kconfig | 14 ++++++++++++++ src/driver/ssd1306.cc | 52 +++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 66 insertions(+) create mode 100644 src/driver/ssd1306.cc (limited to 'src') diff --git a/src/driver/Kconfig b/src/driver/Kconfig index 0b1b98b..3c96d9e 100644 --- a/src/driver/Kconfig +++ b/src/driver/Kconfig @@ -80,6 +80,20 @@ config driver_sharp96 bool "sharp LS013B4DN 96x96px Transflective LC Display" depends on ( arch_msp430fr5969lp || arch_msp430fr5994lp ) && meta_driver_spi +config driver_ssd1306 +bool "SSD1306 I2C OLED display" +depends on meta_driver_i2c + +config driver_ssd1306_width +int "Display width" +default 128 +depends on driver_ssd1306 + +config driver_ssd1306_height +int "Display height" +default 64 +depends on driver_ssd1306 + config driver_softi2c bool "Software I2C" #depends on !driver_i2c diff --git a/src/driver/ssd1306.cc b/src/driver/ssd1306.cc new file mode 100644 index 0000000..69bd28c --- /dev/null +++ b/src/driver/ssd1306.cc @@ -0,0 +1,52 @@ +/* + * Copyright 2021 Daniel Friesel + * + * SPDX-License-Identifier: BSD-2-Clause + */ +#include "driver/ssd1306.h" +#include "driver/i2c.h" +#include "driver/soft_i2c.h" + +void SSD1306::writeCommand(uint8_t command) +{ + txbuf[0] = 0x80; + txbuf[1] = command; + i2c.xmit(address, 2, txbuf, 0, rxbuf); +} + +void SSD1306::init() +{ + unsigned char i; + for (i = 0; i < sizeof(init1); i++) { + writeCommand(init1[i]); + } + writeCommand(height - 1); + for (i = 0; i < sizeof(init2); i++) { + writeCommand(init2[i]); + } + writeCommand(height == 32 ? 0x02 : 0x12); + for (i = 0; i < sizeof(init3); i++) { + writeCommand(init3[i]); + } +} + +void SSD1306::showImage(unsigned char* data, uint16_t length) +{ + uint8_t i; + uint8_t j; + txbuf[0] = 0x40; + for (i = 0; i < length / 128; i++) { + for (j = 0; j < 128; j++) { + txbuf[j+1] = data[(uint16_t)i*128 + j]; + } + i2c.xmit(address, 129, txbuf, 0, rxbuf); + } + if (length % 128) { + for (j = 0; j < length % 128; j++) { + txbuf[j+1] = data[(uint16_t)i*128 + j]; + } + i2c.xmit(address, (length % 128) + 1, txbuf, 0, rxbuf); + } +} + +SSD1306 ssd1306; -- cgit v1.2.3