diff options
| -rw-r--r-- | Makefile | 9 | ||||
| -rw-r--r-- | include/driver/ssd1306.h | 78 | ||||
| -rw-r--r-- | src/driver/Kconfig | 14 | ||||
| -rw-r--r-- | src/driver/ssd1306.cc | 52 |
4 files changed, 153 insertions, 0 deletions
@@ -108,6 +108,10 @@ ifneq ($(findstring sharp96,${drivers}), ) CONFIG_driver_sharp96 = y endif +ifneq ($(findstring ssd1306,${drivers}), ) + CONFIG_driver_ssd1306 = y +endif + ifneq ($(findstring tsl2591,${drivers}), ) CONFIG_driver_tsl2591 = y endif @@ -251,6 +255,11 @@ ifdef CONFIG_driver_sharp96 COMMON_FLAGS += -DSHARP96_CS_PIN=GPIO::${sharp96_cs_pin} endif +ifdef CONFIG_driver_ssd1306 + CXX_TARGETS += src/driver/ssd1306.cc + COMMON_FLAGS += -DDRIVER_SSD1306 -DSSD1306_WIDTH=${CONFIG_driver_ssd1306_width} -DSSD1306_HEIGHT=${CONFIG_driver_ssd1306_height} +endif + ifdef CONFIG_driver_resistive_load CXX_TARGETS += src/driver/resistive_load.cc resistor1_pin ?= p3_0 diff --git a/include/driver/ssd1306.h b/include/driver/ssd1306.h new file mode 100644 index 0000000..4a2cf01 --- /dev/null +++ b/include/driver/ssd1306.h @@ -0,0 +1,78 @@ +/* + * Copyright 2021 Daniel Friesel + * + * SPDX-License-Identifier: BSD-2-Clause + */ +#ifndef SSD1306_H +#define SSD1306_H + +#define SSD1306_SET_CONTRAST 0x81 +#define SSD1306_SET_ENTIRE_ON 0xa4 +#define SSD1306_SET_NORM_INV 0xa6 +#define SSD1306_SET_DISP 0xae +#define SSD1306_SET_MEM_ADDR 0x20 +#define SSD1306_SET_COL_ADDR 0x21 +#define SSD1306_SET_PAGE_ADDR 0x22 +#define SSD1306_SET_DISP_START_LINE 0x40 +#define SSD1306_SET_SEG_REMAP 0xa0 +#define SSD1306_SET_MUX_RATIO 0xa8 +#define SSD1306_SET_COM_OUT_DIR 0xc0 +#define SSD1306_SET_DISP_OFFSET 0xd3 +#define SSD1306_SET_COM_PIN_CFG 0xda +#define SSD1306_SET_DISP_CLK_DIV 0xd5 +#define SSD1306_SET_PRECHARGE 0xd9 +#define SSD1306_SET_VCOM_DESEL 0xdb +#define SSD1306_SET_CHARGE_PUMP 0x8d + +#include <stdint.h> +#include <stddef.h> + +class SSD1306 { + private: + const uint8_t width = SSD1306_WIDTH; + const uint8_t height = SSD1306_HEIGHT; + SSD1306(const SSD1306 ©); + + unsigned char const address = 0x3c; + + unsigned char txbuf[130]; + unsigned char rxbuf[2]; + + const unsigned char init1[6] = { + SSD1306_SET_DISP | 0x00, + SSD1306_SET_MEM_ADDR, 0x00, + SSD1306_SET_DISP_START_LINE | 0x00, + SSD1306_SET_SEG_REMAP | 0x01, + SSD1306_SET_MUX_RATIO + }; + // height + const unsigned char init2[4] = { + SSD1306_SET_COM_OUT_DIR | 0x08, + SSD1306_SET_DISP_OFFSET, 0x00, + SSD1306_SET_COM_PIN_CFG + }; + // height == 32? 0x02 : 0x12 + const unsigned char init3[13] = { + SSD1306_SET_DISP_CLK_DIV, 0x80, + SSD1306_SET_PRECHARGE, 0xf1, + SSD1306_SET_VCOM_DESEL, 0x30, + SSD1306_SET_CONTRAST, 0xff, + SSD1306_SET_ENTIRE_ON, + SSD1306_SET_NORM_INV, + SSD1306_SET_CHARGE_PUMP, 0x14, + SSD1306_SET_DISP | 0x01 + }; + + void writeCommand(uint8_t command); + void writeData(unsigned char* data); + + public: + SSD1306() {} + + void init(); + void showImage(unsigned char* data, uint16_t length); +}; + +extern SSD1306 ssd1306; + +#endif 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; |