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Diffstat (limited to 'drivers/oled/oled_driver.c')
| -rw-r--r-- | drivers/oled/oled_driver.c | 978 |
1 files changed, 978 insertions, 0 deletions
diff --git a/drivers/oled/oled_driver.c b/drivers/oled/oled_driver.c new file mode 100644 index 0000000000..8ff6e0426c --- /dev/null +++ b/drivers/oled/oled_driver.c @@ -0,0 +1,978 @@ +/* +Copyright 2019 Ryan Caltabiano <https://github.com/XScorpion2> + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation, either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#if defined(OLED_TRANSPORT_SPI) +# include "spi_master.h" +#elif defined(OLED_TRANSPORT_I2C) +# include "i2c_master.h" +#endif +#include "oled_driver.h" +#include OLED_FONT_H +#include "timer.h" +#include "print.h" +#include <string.h> +#include "progmem.h" +#include "wait.h" + +// Used commands from spec sheet: https://cdn-shop.adafruit.com/datasheets/SSD1306.pdf +// for SH1106: https://www.velleman.eu/downloads/29/infosheets/sh1106_datasheet.pdf +// for SH1107: https://www.displayfuture.com/Display/datasheet/controller/SH1107.pdf + +// Fundamental Commands +#define CONTRAST 0x81 +#define DISPLAY_ALL_ON 0xA5 +#define DISPLAY_ALL_ON_RESUME 0xA4 +#define NORMAL_DISPLAY 0xA6 +#define INVERT_DISPLAY 0xA7 +#define DISPLAY_ON 0xAF +#define DISPLAY_OFF 0xAE +#define NOP 0xE3 + +// Scrolling Commands +#define ACTIVATE_SCROLL 0x2F +#define DEACTIVATE_SCROLL 0x2E +#define SCROLL_RIGHT 0x26 +#define SCROLL_LEFT 0x27 +#define SCROLL_RIGHT_UP 0x29 +#define SCROLL_LEFT_UP 0x2A + +// Addressing Setting Commands +#define MEMORY_MODE 0x20 +#define COLUMN_ADDR 0x21 +#define PAGE_ADDR 0x22 +#define PAM_SETCOLUMN_LSB 0x00 +#define PAM_SETCOLUMN_MSB 0x10 +#define PAM_PAGE_ADDR 0xB0 // 0xb0 -- 0xb7 + +// Hardware Configuration Commands +#define DISPLAY_START_LINE 0x40 +#define SEGMENT_REMAP 0xA0 +#define SEGMENT_REMAP_INV 0xA1 +#define MULTIPLEX_RATIO 0xA8 +#define COM_SCAN_INC 0xC0 +#define COM_SCAN_DEC 0xC8 +#define DISPLAY_OFFSET 0xD3 +#define COM_PINS 0xDA +#define COM_PINS_SEQ 0x02 +#define COM_PINS_ALT 0x12 +#define COM_PINS_SEQ_LR 0x22 +#define COM_PINS_ALT_LR 0x32 + +// Timing & Driving Commands +#define DISPLAY_CLOCK 0xD5 +#define PRE_CHARGE_PERIOD 0xD9 +#define VCOM_DETECT 0xDB + +// Advance Graphic Commands +#define FADE_BLINK 0x23 +#define ENABLE_FADE 0x20 +#define ENABLE_BLINK 0x30 + +// Charge Pump Commands +#define CHARGE_PUMP 0x8D + +// Commands specific to the SH1107 chip +#define SH1107_DISPLAY_START_LINE 0xDC +#define SH1107_MEMORY_MODE_PAGE 0x20 +#define SH1107_MEMORY_MODE_VERTICAL 0x21 + +// Misc defines +#ifndef OLED_BLOCK_COUNT +# define OLED_BLOCK_COUNT (sizeof(OLED_BLOCK_TYPE) * 8) +#endif +#ifndef OLED_BLOCK_SIZE +# define OLED_BLOCK_SIZE (OLED_MATRIX_SIZE / OLED_BLOCK_COUNT) +#endif +// Default display clock +#if !defined(OLED_DISPLAY_CLOCK) +# define OLED_DISPLAY_CLOCK 0x80 +#endif +// Default VCOMH deselect value +#if !defined(OLED_VCOM_DETECT) +# define OLED_VCOM_DETECT 0x20 +#endif +#if !defined(OLED_PRE_CHARGE_PERIOD) +# define OLED_PRE_CHARGE_PERIOD 0xF1 +#endif + +#define OLED_ALL_BLOCKS_MASK (((((OLED_BLOCK_TYPE)1 << (OLED_BLOCK_COUNT - 1)) - 1) << 1) | 1) + +#define OLED_IC_HAS_HORIZONTAL_MODE (OLED_IC == OLED_IC_SSD1306) +#define OLED_IC_COM_PINS_ARE_COLUMNS (OLED_IC == OLED_IC_SH1107) + +#ifndef OLED_COM_PIN_COUNT +# if OLED_IC == OLED_IC_SSD1306 +# define OLED_COM_PIN_COUNT 64 +# elif OLED_IC == OLED_IC_SH1106 +# define OLED_COM_PIN_COUNT 64 +# elif OLED_IC == OLED_IC_SH1107 +# define OLED_COM_PIN_COUNT 128 +# else +# error Invalid OLED_IC value +# endif +#endif + +#ifndef OLED_COM_PIN_OFFSET +# define OLED_COM_PIN_OFFSET 0 +#endif + +// i2c defines +#define I2C_CMD 0x00 +#define I2C_DATA 0x40 + +#define HAS_FLAGS(bits, flags) ((bits & flags) == flags) + +// Display buffer's is the same as the OLED memory layout +// this is so we don't end up with rounding errors with +// parts of the display unusable or don't get cleared correctly +// and also allows for drawing & inverting +uint8_t oled_buffer[OLED_MATRIX_SIZE]; +uint8_t * oled_cursor; +OLED_BLOCK_TYPE oled_dirty = 0; +bool oled_initialized = false; +bool oled_active = false; +bool oled_scrolling = false; +bool oled_inverted = false; +uint8_t oled_brightness = OLED_BRIGHTNESS; +oled_rotation_t oled_rotation = 0; +uint8_t oled_rotation_width = 0; +uint8_t oled_scroll_speed = 0; // this holds the speed after being remapped to ssd1306 internal values +uint8_t oled_scroll_start = 0; +uint8_t oled_scroll_end = 7; +#if OLED_TIMEOUT > 0 +uint32_t oled_timeout; +#endif +#if OLED_SCROLL_TIMEOUT > 0 +uint32_t oled_scroll_timeout; +#endif +#if OLED_UPDATE_INTERVAL > 0 +uint16_t oled_update_timeout; +#endif + +#if defined(OLED_TRANSPORT_SPI) +# ifndef OLED_DC_PIN +# error "The OLED driver in SPI needs a D/C pin defined" +# endif +# ifndef OLED_CS_PIN +# error "The OLED driver in SPI needs a CS pin defined" +# endif +# ifndef OLED_SPI_MODE +# define OLED_SPI_MODE 3 +# endif +# ifndef OLED_SPI_DIVISOR +# define OLED_SPI_DIVISOR 2 +# endif +#elif defined(OLED_TRANSPORT_I2C) +# if !defined(OLED_DISPLAY_ADDRESS) +# define OLED_DISPLAY_ADDRESS 0x3C +# endif +#endif + +// Transmit/Write Funcs. +__attribute__((weak)) bool oled_send_cmd(const uint8_t *data, uint16_t size) { +#if defined(OLED_TRANSPORT_SPI) + if (!spi_start(OLED_CS_PIN, false, OLED_SPI_MODE, OLED_SPI_DIVISOR)) { + return false; + } + // Command Mode + writePinLow(OLED_DC_PIN); + // Send the commands + if (spi_transmit(&data[1], size - 1) != SPI_STATUS_SUCCESS) { + spi_stop(); + return false; + } + spi_stop(); + return true; +#elif defined(OLED_TRANSPORT_I2C) + i2c_status_t status = i2c_transmit((OLED_DISPLAY_ADDRESS << 1), data, size, OLED_I2C_TIMEOUT); + + return (status == I2C_STATUS_SUCCESS); +#endif +} + +__attribute__((weak)) bool oled_send_cmd_P(const uint8_t *data, uint16_t size) { +#if defined(__AVR__) +# if defined(OLED_TRANSPORT_SPI) + if (!spi_start(OLED_CS_PIN, false, OLED_SPI_MODE, OLED_SPI_DIVISOR)) { + return false; + } + spi_status_t status = SPI_STATUS_SUCCESS; + // Command Mode + writePinLow(OLED_DC_PIN); + // Send the commands + for (uint16_t i = 1; i < size && status >= 0; i++) { + status = spi_write(pgm_read_byte((const char *)&data[i])); + } + spi_stop(); + return (status >= 0); +# elif defined(OLED_TRANSPORT_I2C) + i2c_status_t status = i2c_start((OLED_DISPLAY_ADDRESS << 1) | I2C_WRITE, OLED_I2C_TIMEOUT); + + for (uint16_t i = 0; i < size && status >= 0; i++) { + status = i2c_write(pgm_read_byte((const char *)data++), OLED_I2C_TIMEOUT); + } + + i2c_stop(); + + return (status == I2C_STATUS_SUCCESS); +# endif +#else + return oled_send_cmd(data, size); +#endif +} + +__attribute__((weak)) bool oled_send_data(const uint8_t *data, uint16_t size) { +#if defined(OLED_TRANSPORT_SPI) + if (!spi_start(OLED_CS_PIN, false, OLED_SPI_MODE, OLED_SPI_DIVISOR)) { + return false; + } + // Data Mode + writePinHigh(OLED_DC_PIN); + // Send the commands + if (spi_transmit(data, size) != SPI_STATUS_SUCCESS) { + spi_stop(); + return false; + } + spi_stop(); + return true; +#elif defined(OLED_TRANSPORT_I2C) + i2c_status_t status = i2c_writeReg((OLED_DISPLAY_ADDRESS << 1), I2C_DATA, data, size, OLED_I2C_TIMEOUT); + return (status == I2C_STATUS_SUCCESS); +#endif +} + +__attribute__((weak)) void oled_driver_init(void) { +#if defined(OLED_TRANSPORT_SPI) + spi_init(); + setPinOutput(OLED_CS_PIN); + writePinHigh(OLED_CS_PIN); + + setPinOutput(OLED_DC_PIN); + writePinLow(OLED_DC_PIN); +# ifdef OLED_RST_PIN + /* Reset device */ + setPinOutput(OLED_RST_PIN); + writePinLow(OLED_RST_PIN); + wait_ms(20); + writePinHigh(OLED_RST_PIN); + wait_ms(20); +# endif +#elif defined(OLED_TRANSPORT_I2C) + i2c_init(); +#endif +} + +// Flips the rendering bits for a character at the current cursor position +static void InvertCharacter(uint8_t *cursor) { + const uint8_t *end = cursor + OLED_FONT_WIDTH; + while (cursor < end) { + *cursor = ~(*cursor); + cursor++; + } +} + +bool oled_init(oled_rotation_t rotation) { +#if defined(USE_I2C) && defined(SPLIT_KEYBOARD) && defined(OLED_TRANSPORT_I2C) + if (!is_keyboard_master()) { + return true; + } +#endif + + oled_rotation = oled_init_user(oled_init_kb(rotation)); + if (!HAS_FLAGS(oled_rotation, OLED_ROTATION_90)) { + oled_rotation_width = OLED_DISPLAY_WIDTH; + } else { + oled_rotation_width = OLED_DISPLAY_HEIGHT; + } + oled_driver_init(); + + static const uint8_t PROGMEM display_setup1[] = { + I2C_CMD, + DISPLAY_OFF, + DISPLAY_CLOCK, + OLED_DISPLAY_CLOCK, + MULTIPLEX_RATIO, +#if OLED_IC_COM_PINS_ARE_COLUMNS + OLED_DISPLAY_WIDTH - 1, +#else + OLED_DISPLAY_HEIGHT - 1, +#endif +#if OLED_IC == OLED_IC_SH1107 + SH1107_DISPLAY_START_LINE, + 0x00, +#else + DISPLAY_START_LINE | 0x00, +#endif + CHARGE_PUMP, + 0x14, +#if OLED_IC_HAS_HORIZONTAL_MODE + // MEMORY_MODE is unsupported on SH1106 (Page Addressing only) + MEMORY_MODE, + 0x00, // Horizontal addressing mode +#elif OLED_IC == OLED_IC_SH1107 + // Page addressing mode + SH1107_MEMORY_MODE_PAGE, +#endif + }; + if (!oled_send_cmd_P(display_setup1, ARRAY_SIZE(display_setup1))) { + print("oled_init cmd set 1 failed\n"); + return false; + } + + if (!HAS_FLAGS(oled_rotation, OLED_ROTATION_180)) { + static const uint8_t PROGMEM display_normal[] = { + I2C_CMD, SEGMENT_REMAP_INV, COM_SCAN_DEC, DISPLAY_OFFSET, OLED_COM_PIN_OFFSET, + }; + if (!oled_send_cmd_P(display_normal, ARRAY_SIZE(display_normal))) { + print("oled_init cmd normal rotation failed\n"); + return false; + } + } else { + static const uint8_t PROGMEM display_flipped[] = { + I2C_CMD, SEGMENT_REMAP, COM_SCAN_INC, DISPLAY_OFFSET, (OLED_COM_PIN_COUNT - OLED_COM_PIN_OFFSET) % OLED_COM_PIN_COUNT, + }; + if (!oled_send_cmd_P(display_flipped, ARRAY_SIZE(display_flipped))) { + print("display_flipped failed\n"); + return false; + } + } + + static const uint8_t PROGMEM display_setup2[] = {I2C_CMD, COM_PINS, OLED_COM_PINS, CONTRAST, OLED_BRIGHTNESS, PRE_CHARGE_PERIOD, OLED_PRE_CHARGE_PERIOD, VCOM_DETECT, OLED_VCOM_DETECT, DISPLAY_ALL_ON_RESUME, NORMAL_DISPLAY, DEACTIVATE_SCROLL, DISPLAY_ON}; + if (!oled_send_cmd_P(display_setup2, ARRAY_SIZE(display_setup2))) { + print("display_setup2 failed\n"); + return false; + } + +#if OLED_TIMEOUT > 0 + oled_timeout = timer_read32() + OLED_TIMEOUT; +#endif +#if OLED_SCROLL_TIMEOUT > 0 + oled_scroll_timeout = timer_read32() + OLED_SCROLL_TIMEOUT; +#endif + + oled_clear(); + oled_initialized = true; + oled_active = true; + oled_scrolling = false; + return true; +} + +__attribute__((weak)) oled_rotation_t oled_init_kb(oled_rotation_t rotation) { + return rotation; +} +__attribute__((weak)) oled_rotation_t oled_init_user(oled_rotation_t rotation) { + return rotation; +} + +void oled_clear(void) { + memset(oled_buffer, 0, sizeof(oled_buffer)); + oled_cursor = &oled_buffer[0]; + oled_dirty = OLED_ALL_BLOCKS_MASK; +} + +static void calc_bounds(uint8_t update_start, uint8_t *cmd_array) { + // Calculate commands to set memory addressing bounds. + uint8_t start_page = OLED_BLOCK_SIZE * update_start / OLED_DISPLAY_WIDTH; + uint8_t start_column = OLED_BLOCK_SIZE * update_start % OLED_DISPLAY_WIDTH; +#if !OLED_IC_HAS_HORIZONTAL_MODE + // Commands for Page Addressing Mode. Sets starting page and column; has no end bound. + // Column value must be split into high and low nybble and sent as two commands. + cmd_array[0] = PAM_PAGE_ADDR | start_page; + cmd_array[1] = PAM_SETCOLUMN_LSB | ((OLED_COLUMN_OFFSET + start_column) & 0x0f); + cmd_array[2] = PAM_SETCOLUMN_MSB | ((OLED_COLUMN_OFFSET + start_column) >> 4 & 0x0f); +#else + // Commands for use in Horizontal Addressing mode. + cmd_array[1] = start_column + OLED_COLUMN_OFFSET; + cmd_array[4] = start_page; + cmd_array[2] = (OLED_BLOCK_SIZE + OLED_DISPLAY_WIDTH - 1) % OLED_DISPLAY_WIDTH + cmd_array[1]; + cmd_array[5] = (OLED_BLOCK_SIZE + OLED_DISPLAY_WIDTH - 1) / OLED_DISPLAY_WIDTH - 1 + cmd_array[4]; +#endif +} + +static void calc_bounds_90(uint8_t update_start, uint8_t *cmd_array) { + // Block numbering starts from the bottom left corner, going up and then to + // the right. The controller needs the page and column numbers for the top + // left and bottom right corners of that block. + + // Total number of pages across the screen height. + const uint8_t height_in_pages = OLED_DISPLAY_HEIGHT / 8; + + // Difference of starting page numbers for adjacent blocks; may be 0 if + // blocks are large enough to occupy one or more whole 8px columns. + const uint8_t page_inc_per_block = OLED_BLOCK_SIZE % OLED_DISPLAY_HEIGHT / 8; + + // Top page number for a block which is at the bottom edge of the screen. + const uint8_t bottom_block_top_page = (height_in_pages - page_inc_per_block) % height_in_pages; + +#if !OLED_IC_HAS_HORIZONTAL_MODE + // Only the Page Addressing Mode is supported + uint8_t start_page = bottom_block_top_page - (OLED_BLOCK_SIZE * update_start % OLED_DISPLAY_HEIGHT / 8); + uint8_t start_column = OLED_BLOCK_SIZE * update_start / OLED_DISPLAY_HEIGHT * 8; + cmd_array[0] = PAM_PAGE_ADDR | start_page; + cmd_array[1] = PAM_SETCOLUMN_LSB | ((OLED_COLUMN_OFFSET + start_column) & 0x0f); + cmd_array[2] = PAM_SETCOLUMN_MSB | ((OLED_COLUMN_OFFSET + start_column) >> 4 & 0x0f); +#else + cmd_array[1] = OLED_BLOCK_SIZE * update_start / OLED_DISPLAY_HEIGHT * 8 + OLED_COLUMN_OFFSET; + cmd_array[4] = bottom_block_top_page - (OLED_BLOCK_SIZE * update_start % OLED_DISPLAY_HEIGHT / 8); + cmd_array[2] = (OLED_BLOCK_SIZE + OLED_DISPLAY_HEIGHT - 1) / OLED_DISPLAY_HEIGHT * 8 - 1 + cmd_array[1]; + cmd_array[5] = (OLED_BLOCK_SIZE + OLED_DISPLAY_HEIGHT - 1) % OLED_DISPLAY_HEIGHT / 8 + cmd_array[4]; +#endif +} + +uint8_t crot(uint8_t a, int8_t n) { + const uint8_t mask = 0x7; + n &= mask; + return a << n | a >> (-n & mask); +} + +static void rotate_90(const uint8_t *src, uint8_t *dest) { + for (uint8_t i = 0, shift = 7; i < 8; ++i, --shift) { + uint8_t selector = (1 << i); + for (uint8_t j = 0; j < 8; ++j) { + dest[i] |= crot(src[j] & selector, shift - (int8_t)j); + } + } +} + +void oled_render(void) { + // Do we have work to do? + oled_dirty &= OLED_ALL_BLOCKS_MASK; + if (!oled_dirty || !oled_initialized || oled_scrolling) { + return; + } + + // Turn on display if it is off + oled_on(); + + uint8_t update_start = 0; + uint8_t num_processed = 0; + while (oled_dirty && num_processed++ < OLED_UPDATE_PROCESS_LIMIT) { // render all dirty blocks (up to the configured limit) + // Find next dirty block + while (!(oled_dirty & ((OLED_BLOCK_TYPE)1 << update_start))) { + ++update_start; + } + + // Set column & page position +#if OLED_IC_HAS_HORIZONTAL_MODE + static uint8_t display_start[] = {I2C_CMD, COLUMN_ADDR, 0, OLED_DISPLAY_WIDTH - 1, PAGE_ADDR, 0, OLED_DISPLAY_HEIGHT / 8 - 1}; +#else + static uint8_t display_start[] = {I2C_CMD, PAM_PAGE_ADDR, PAM_SETCOLUMN_LSB, PAM_SETCOLUMN_MSB}; +#endif + if (!HAS_FLAGS(oled_rotation, OLED_ROTATION_90)) { + calc_bounds(update_start, &display_start[1]); // Offset from I2C_CMD byte at the start + } else { + calc_bounds_90(update_start, &display_start[1]); // Offset from I2C_CMD byte at the start + } + + // Send column & page position + if (!oled_send_cmd(display_start, ARRAY_SIZE(display_start))) { + print("oled_render offset command failed\n"); + return; + } + + if (!HAS_FLAGS(oled_rotation, OLED_ROTATION_90)) { + // Send render data chunk as is + if (!oled_send_data(&oled_buffer[OLED_BLOCK_SIZE * update_start], OLED_BLOCK_SIZE)) { + print("oled_render data failed\n"); + return; + } + } else { + // Rotate the render chunks + const static uint8_t source_map[] = OLED_SOURCE_MAP; + const static uint8_t target_map[] = OLED_TARGET_MAP; + + static uint8_t temp_buffer[OLED_BLOCK_SIZE]; + memset(temp_buffer, 0, sizeof(temp_buffer)); + for (uint8_t i = 0; i < sizeof(source_map); ++i) { + rotate_90(&oled_buffer[OLED_BLOCK_SIZE * update_start + source_map[i]], &temp_buffer[target_map[i]]); + } + +#if OLED_IC_HAS_HORIZONTAL_MODE + // Send render data chunk after rotating + if (!oled_send_data(&temp_buffer[0], OLED_BLOCK_SIZE)) { + print("oled_render90 data failed\n"); + return; + } +#else + // For SH1106 or SH1107 the data chunk must be split into separate pieces for each page + const uint8_t columns_in_block = (OLED_BLOCK_SIZE + OLED_DISPLAY_HEIGHT - 1) / OLED_DISPLAY_HEIGHT * 8; + const uint8_t num_pages = OLED_BLOCK_SIZE / columns_in_block; + for (uint8_t i = 0; i < num_pages; ++i) { + // Send column & page position for all pages except the first one + if (i > 0) { + display_start[1]++; + if (!oled_send_cmd(display_start, ARRAY_SIZE(display_start))) { + print("oled_render offset command failed\n"); + return; + } + } + // Send data for the page + if (!oled_send_data(&temp_buffer[columns_in_block * i], columns_in_block)) { + print("oled_render90 data failed\n"); + return; + } + } +#endif + } + + // Clear dirty flag of just rendered block + oled_dirty &= ~((OLED_BLOCK_TYPE)1 << update_start); + } +} + +void oled_set_cursor(uint8_t col, uint8_t line) { + uint16_t index = line * oled_rotation_width + col * OLED_FONT_WIDTH; + + // Out of bounds? + if (index >= OLED_MATRIX_SIZE) { + index = 0; + } + + oled_cursor = &oled_buffer[index]; +} + +void oled_advance_page(bool clearPageRemainder) { + uint16_t index = oled_cursor - &oled_buffer[0]; + uint8_t remaining = oled_rotation_width - (index % oled_rotation_width); + + if (clearPageRemainder) { + // Remaining Char count + remaining = remaining / OLED_FONT_WIDTH; + + // Write empty character until next line + while (remaining--) + oled_write_char(' ', false); + } else { + // Next page index out of bounds? + if (index + remaining >= OLED_MATRIX_SIZE) { + index = 0; + remaining = 0; + } + + oled_cursor = &oled_buffer[index + remaining]; + } +} + +void oled_advance_char(void) { + uint16_t nextIndex = oled_cursor - &oled_buffer[0] + OLED_FONT_WIDTH; + uint8_t remainingSpace = oled_rotation_width - (nextIndex % oled_rotation_width); + + // Do we have enough space on the current line for the next character + if (remainingSpace < OLED_FONT_WIDTH) { + nextIndex += remainingSpace; + } + + // Did we go out of bounds + if (nextIndex >= OLED_MATRIX_SIZE) { + nextIndex = 0; + } + + // Update cursor position + oled_cursor = &oled_buffer[nextIndex]; +} + +// Main handler that writes character data to the display buffer +void oled_write_char(const char data, bool invert) { + // Advance to the next line if newline + if (data == '\n') { + // Old source wrote ' ' until end of line... + oled_advance_page(true); + return; + } + + if (data == '\r') { + oled_advance_page(false); + return; + } + + // copy the current render buffer to check for dirty after + static uint8_t oled_temp_buffer[OLED_FONT_WIDTH]; + memcpy(&oled_temp_buffer, oled_cursor, OLED_FONT_WIDTH); + + _Static_assert(sizeof(font) >= ((OLED_FONT_END + 1 - OLED_FONT_START) * OLED_FONT_WIDTH), "OLED_FONT_END references outside array"); + + // set the reder buffer data + uint8_t cast_data = (uint8_t)data; // font based on unsigned type for index + if (cast_data < OLED_FONT_START || cast_data > OLED_FONT_END) { + memset(oled_cursor, 0x00, OLED_FONT_WIDTH); + } else { + const uint8_t *glyph = &font[(cast_data - OLED_FONT_START) * OLED_FONT_WIDTH]; + memcpy_P(oled_cursor, glyph, OLED_FONT_WIDTH); + } + + // Invert if needed + if (invert) { + InvertCharacter(oled_cursor); + } + + // Dirty check + if (memcmp(&oled_temp_buffer, oled_cursor, OLED_FONT_WIDTH)) { + uint16_t index = oled_cursor - &oled_buffer[0]; + oled_dirty |= ((OLED_BLOCK_TYPE)1 << (index / OLED_BLOCK_SIZE)); + // Edgecase check if the written data spans the 2 chunks + oled_dirty |= ((OLED_BLOCK_TYPE)1 << ((index + OLED_FONT_WIDTH - 1) / OLED_BLOCK_SIZE)); + } + + // Finally move to the next char + oled_advance_char(); +} + +void oled_write(const char *data, bool invert) { + const char *end = data + strlen(data); + while (data < end) { + oled_write_char(*data, invert); + data++; + } +} + +void oled_write_ln(const char *data, bool invert) { + oled_write(data, invert); + oled_advance_page(true); +} + +void oled_pan(bool left) { + uint16_t i = 0; + for (uint16_t y = 0; y < OLED_DISPLAY_HEIGHT / 8; y++) { + if (left) { + for (uint16_t x = 0; x < OLED_DISPLAY_WIDTH - 1; x++) { + i = y * OLED_DISPLAY_WIDTH + x; + oled_buffer[i] = oled_buffer[i + 1]; + } + } else { + for (uint16_t x = OLED_DISPLAY_WIDTH - 1; x > 0; x--) { + i = y * OLED_DISPLAY_WIDTH + x; + oled_buffer[i] = oled_buffer[i - 1]; + } + } + } + oled_dirty = OLED_ALL_BLOCKS_MASK; +} + +oled_buffer_reader_t oled_read_raw(uint16_t start_index) { + if (start_index > OLED_MATRIX_SIZE) start_index = OLED_MATRIX_SIZE; + oled_buffer_reader_t ret_reader; + ret_reader.current_element = &oled_buffer[start_index]; + ret_reader.remaining_element_count = OLED_MATRIX_SIZE - start_index; + return ret_reader; +} + +void oled_write_raw_byte(const char data, uint16_t index) { + if (index > OLED_MATRIX_SIZE) index = OLED_MATRIX_SIZE; + if (oled_buffer[index] == data) return; + oled_buffer[index] = data; + oled_dirty |= ((OLED_BLOCK_TYPE)1 << (index / OLED_BLOCK_SIZE)); +} + +void oled_write_raw(const char *data, uint16_t size) { + uint16_t cursor_start_index = oled_cursor - &oled_buffer[0]; + if ((size + cursor_start_index) > OLED_MATRIX_SIZE) size = OLED_MATRIX_SIZE - cursor_start_index; + for (uint16_t i = cursor_start_index; i < cursor_start_index + size; i++) { + uint8_t c = *data++; + if (oled_buffer[i] == c) continue; + oled_buffer[i] = c; + oled_dirty |= ((OLED_BLOCK_TYPE)1 << (i / OLED_BLOCK_SIZE)); + } +} + +void oled_write_pixel(uint8_t x, uint8_t y, bool on) { + if (x >= oled_rotation_width) { + return; + } + uint16_t index = x + (y / 8) * oled_rotation_width; + if (index >= OLED_MATRIX_SIZE) { + return; + } + uint8_t data = oled_buffer[index]; + if (on) { + data |= (1 << (y % 8)); + } else { + data &= ~(1 << (y % 8)); + } + if (oled_buffer[index] != data) { + oled_buffer[index] = data; + oled_dirty |= ((OLED_BLOCK_TYPE)1 << (index / OLED_BLOCK_SIZE)); + } +} + +#if defined(__AVR__) +void oled_write_P(const char *data, bool invert) { + uint8_t c = pgm_read_byte(data); + while (c != 0) { + oled_write_char(c, invert); + c = pgm_read_byte(++data); + } +} + +void oled_write_ln_P(const char *data, bool invert) { + oled_write_P(data, invert); + oled_advance_page(true); +} + +void oled_write_raw_P(const char *data, uint16_t size) { + uint16_t cursor_start_index = oled_cursor - &oled_buffer[0]; + if ((size + cursor_start_index) > OLED_MATRIX_SIZE) size = OLED_MATRIX_SIZE - cursor_start_index; + for (uint16_t i = cursor_start_index; i < cursor_start_index + size; i++) { + uint8_t c = pgm_read_byte(data++); + if (oled_buffer[i] == c) continue; + oled_buffer[i] = c; + oled_dirty |= ((OLED_BLOCK_TYPE)1 << (i / OLED_BLOCK_SIZE)); + } +} +#endif // defined(__AVR__) + +bool oled_on(void) { + if (!oled_initialized) { + return oled_active; + } + +#if OLED_TIMEOUT > 0 + oled_timeout = timer_read32() + OLED_TIMEOUT; +#endif + + static const uint8_t PROGMEM display_on[] = +#ifdef OLED_FADE_OUT + {I2C_CMD, FADE_BLINK, 0x00}; +#else + {I2C_CMD, DISPLAY_ON}; +#endif + + if (!oled_active) { + if (!oled_send_cmd_P(display_on, ARRAY_SIZE(display_on))) { + print("oled_on cmd failed\n"); + return oled_active; + } + oled_active = true; + } + return oled_active; +} + +bool oled_off(void) { + if (!oled_initialized) { + return !oled_active; + } + + static const uint8_t PROGMEM display_off[] = +#ifdef OLED_FADE_OUT + {I2C_CMD, FADE_BLINK, ENABLE_FADE | OLED_FADE_OUT_INTERVAL}; +#else + {I2C_CMD, DISPLAY_OFF}; +#endif + + if (oled_active) { + if (!oled_send_cmd_P(display_off, ARRAY_SIZE(display_off))) { + print("oled_off cmd failed\n"); + return oled_active; + } + oled_active = false; + } + return !oled_active; +} + +bool is_oled_on(void) { + return oled_active; +} + +uint8_t oled_set_brightness(uint8_t level) { + if (!oled_initialized) { + return oled_brightness; + } + + uint8_t set_contrast[] = {I2C_CMD, CONTRAST, level}; + if (oled_brightness != level) { + if (!oled_send_cmd(set_contrast, ARRAY_SIZE(set_contrast))) { + print("set_brightness cmd failed\n"); + return oled_brightness; + } + oled_brightness = level; + } + return oled_brightness; +} + +uint8_t oled_get_brightness(void) { + return oled_brightness; +} + +// Set the specific 8 lines rows of the screen to scroll. +// 0 is the default for start, and 7 for end, which is the entire +// height of the screen. For 128x32 screens, rows 4-7 are not used. +void oled_scroll_set_area(uint8_t start_line, uint8_t end_line) { + oled_scroll_start = start_line; + oled_scroll_end = end_line; +} + +void oled_scroll_set_speed(uint8_t speed) { + // Sets the speed for scrolling... does not take effect + // until scrolling is either started or restarted + // the ssd1306 supports 8 speeds + // FrameRate2 speed = 7 + // FrameRate3 speed = 4 + // FrameRate4 speed = 5 + // FrameRate5 speed = 0 + // FrameRate25 speed = 6 + // FrameRate64 speed = 1 + // FrameRate128 speed = 2 + // FrameRate256 speed = 3 + // for ease of use these are remaped here to be in order + static const uint8_t scroll_remap[8] = {7, 4, 5, 0, 6, 1, 2, 3}; + oled_scroll_speed = scroll_remap[speed]; +} + +bool oled_scroll_right(void) { + if (!oled_initialized) { + return oled_scrolling; + } + + // Dont enable scrolling if we need to update the display + // This prevents scrolling of bad data from starting the scroll too early after init + if (!oled_dirty && !oled_scrolling) { + uint8_t display_scroll_right[] = {I2C_CMD, SCROLL_RIGHT, 0x00, oled_scroll_start, oled_scroll_speed, oled_scroll_end, 0x00, 0xFF, ACTIVATE_SCROLL}; + if (!oled_send_cmd(display_scroll_right, ARRAY_SIZE(display_scroll_right))) { + print("oled_scroll_right cmd failed\n"); + return oled_scrolling; + } + oled_scrolling = true; + } + return oled_scrolling; +} + +bool oled_scroll_left(void) { + if (!oled_initialized) { + return oled_scrolling; + } + + // Dont enable scrolling if we need to update the display + // This prevents scrolling of bad data from starting the scroll too early after init + if (!oled_dirty && !oled_scrolling) { + uint8_t display_scroll_left[] = {I2C_CMD, SCROLL_LEFT, 0x00, oled_scroll_start, oled_scroll_speed, oled_scroll_end, 0x00, 0xFF, ACTIVATE_SCROLL}; + if (!oled_send_cmd(display_scroll_left, ARRAY_SIZE(display_scroll_left))) { + print("oled_scroll_left cmd failed\n"); + return oled_scrolling; + } + oled_scrolling = true; + } + return oled_scrolling; +} + +bool oled_scroll_off(void) { + if (!oled_initialized) { + return !oled_scrolling; + } + + if (oled_scrolling) { + static const uint8_t PROGMEM display_scroll_off[] = {I2C_CMD, DEACTIVATE_SCROLL}; + if (!oled_send_cmd_P(display_scroll_off, ARRAY_SIZE(display_scroll_off))) { + print("oled_scroll_off cmd failed\n"); + return oled_scrolling; + } + oled_scrolling = false; + oled_dirty = OLED_ALL_BLOCKS_MASK; + } + return !oled_scrolling; +} + +bool is_oled_scrolling(void) { + return oled_scrolling; +} + +bool oled_invert(bool invert) { + if (!oled_initialized) { + return oled_inverted; + } + + if (invert && !oled_inverted) { + static const uint8_t PROGMEM display_inverted[] = {I2C_CMD, INVERT_DISPLAY}; + if (!oled_send_cmd_P(display_inverted, ARRAY_SIZE(display_inverted))) { + print("oled_invert cmd failed\n"); + return oled_inverted; + } + oled_inverted = true; + } else if (!invert && oled_inverted) { + static const uint8_t PROGMEM display_normal[] = {I2C_CMD, NORMAL_DISPLAY}; + if (!oled_send_cmd_P(display_normal, ARRAY_SIZE(display_normal))) { + print("oled_invert cmd failed\n"); + return oled_inverted; + } + oled_inverted = false; + } + + return oled_inverted; +} + +uint8_t oled_max_chars(void) { + if (!HAS_FLAGS(oled_rotation, OLED_ROTATION_90)) { + return OLED_DISPLAY_WIDTH / OLED_FONT_WIDTH; + } + return OLED_DISPLAY_HEIGHT / OLED_FONT_WIDTH; +} + +uint8_t oled_max_lines(void) { + if (!HAS_FLAGS(oled_rotation, OLED_ROTATION_90)) { + return OLED_DISPLAY_HEIGHT / OLED_FONT_HEIGHT; + } + return OLED_DISPLAY_WIDTH / OLED_FONT_HEIGHT; +} + +void oled_task(void) { + if (!oled_initialized) { + return; + } + +#if OLED_UPDATE_INTERVAL > 0 + if (timer_elapsed(oled_update_timeout) >= OLED_UPDATE_INTERVAL) { + oled_update_timeout = timer_read(); + oled_set_cursor(0, 0); + oled_task_kb(); + } +#else + oled_set_cursor(0, 0); + oled_task_kb(); +#endif + +#if OLED_SCROLL_TIMEOUT > 0 + if (oled_dirty && oled_scrolling) { + oled_scroll_timeout = timer_read32() + OLED_SCROLL_TIMEOUT; + oled_scroll_off(); + } +#endif + + // Smart render system, no need to check for dirty + oled_render(); + + // Display timeout check +#if OLED_TIMEOUT > 0 + if (oled_active && timer_expired32(timer_read32(), oled_timeout)) { + oled_off(); + } +#endif + +#if OLED_SCROLL_TIMEOUT > 0 + if (!oled_scrolling && timer_expired32(timer_read32(), oled_scroll_timeout)) { +# ifdef OLED_SCROLL_TIMEOUT_RIGHT + oled_scroll_right(); +# else + oled_scroll_left(); +# endif + } +#endif +} + +__attribute__((weak)) bool oled_task_kb(void) { + return oled_task_user(); +} +__attribute__((weak)) bool oled_task_user(void) { + return true; +} |