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29 * Copyright 2010 Develer S.r.l. (http://www.develer.com/)
33 * \brief OLED-RIT-128x96 (P14201) graphic display driver
35 * \author Andrea Righi <arighi@develer.com>
38 #include "lcd_rit128x96.h"
40 #include "hw/hw_rit128x96.h"
42 #include <cfg/debug.h>
43 #include <cfg/macros.h>
47 * Hard-coded command initialization sequence.
49 * NOTE: the first byte is the size of the command.
51 static const uint8_t init_cmd[] =
63 /* Pre-charge current */
67 /* Display Start Line */
71 /* Display Mode Normal */
77 /* Front Clock Divider */
79 /* Set gray scale table */
80 17, 0xb8, 1, 2, 3, 4, 5, 6, 8, 10, 12, 14, 16, 19, 22, 26, 30, 0xe3,
81 /* Second pre-charge period */
83 /* Pre-charge voltage */
90 * Hard-coded command shutdown sequence.
92 static const uint8_t exit_cmd[] =
99 * Hard-coded horizontal increment command.
101 static const uint8_t horizontal_inc[] =
107 * Write a sequence of data bytes to the LCD controller
109 static void lcd_dataWrite(const uint8_t *buf, size_t count)
115 /* Turn on the OLED display */
116 void rit128x96_on(void)
120 /* Loop through the SSD1329 controller initialization sequence */
122 for (i = 0; i < sizeof(init_cmd); i += init_cmd[i] + 1)
123 lcd_dataWrite(init_cmd + i + 1, init_cmd[i] - 1);
126 /* Turn off the OLED display */
127 void rit128x96_off(void)
130 lcd_dataWrite(exit_cmd, sizeof(exit_cmd));
133 static void lcd_start_blit(uint8_t x, uint8_t y, uint8_t width, uint8_t height)
137 ASSERT((x + width) <= LCD_WIDTH);
138 ASSERT((y + height) <= LCD_HEIGHT);
140 /* Enter command mode */
145 buffer[2] = (x + width - 2) / 2;
146 lcd_dataWrite(buffer, 3);
150 buffer[2] = y + height - 1;
151 lcd_dataWrite(buffer, 3);
152 lcd_dataWrite((const uint8_t *)&horizontal_inc, sizeof(horizontal_inc));
155 /* Refresh a raw image on screen */
156 void rit128x96_blitRaw(const uint8_t *data,
157 uint8_t x, uint8_t y, uint8_t width, uint8_t height)
159 lcd_start_blit(x, y, width, height);
161 * Enter data mode and send the encoded image data to the OLED display,
167 /* Write an entire row at once */
168 lcd_dataWrite(data, width / 2);
173 /* Refresh a bitmap on screen */
174 void rit128x96_blitBitmap(const Bitmap *bm)
176 uint8_t lcd_row[bm->width / 2];
180 lcd_start_blit(0, 0, bm->width, bm->height);
182 * Enter data mode and send the encoded image data to the OLED display,
186 for (l = 0; l < bm->height / 8; l++)
188 for (mask = 1; mask; mask <<= 1)
190 for (i = 0; i < bm->width; i++)
192 if (bm->raster[l * bm->width + i] & mask)
193 lcd_row[i / 2] |= i & 1 ? 0x0f : 0xf0;
195 lcd_row[i / 2] &= i & 1 ? 0xf0 : 0x0f;
197 /* Write an entire row at once */
198 lcd_dataWrite(lcd_row, sizeof(lcd_row));
203 /* Initialize the OLED display */
204 void rit128x96_init(void)
206 /* Initialize the communication bus */
207 lcd_rit128x96_hw_bus_init();
209 /* Turn on the OLED display */