/* 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 3 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/>.
 *
 */
/** SSD1306 OLED library (API)
 *  @file
 *  @author King Kévin <kingkevin@cuvoodoo.info>
 *  @date 2018-2019
 *  @note peripherals used: I2C @ref oled_ssd1306_i2c
 */

/** setup OLED display
 *  @param[in] slave_addr I²C slave address of SSD1306 device (least significant 7-bit)
 *  @return if the display setup is successful, else the display is probably not on the I²C bus
 *  @warning only one display on the I²C bus is currently supported
 */
bool oled_ssd1306_setup(uint8_t slave_addr);
/** switch OLED display on */
void oled_ssd1306_on(void);
/** switch OLED display off */
void oled_ssd1306_off(void);
/** test OLED display: switch entire screen on for a brief time */
void oled_ssd1306_test(void);
/** send data to display to OLED display
 *  @param[in] display_data data to display (first byte is left column, MSb is top pixel, warps pages)
 *  @param[in] display_length length of data to display
 */
void oled_ssd1306_display(const uint8_t* display_data, uint16_t display_length);