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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 <cfg/debug.h>
39 #include <cfg/macros.h>
41 #include "lcd_rit128x96.h"
44 * Hard-coded command initialization sequence.
46 * NOTE: the first byte is the size of the command.
48 static const uint8_t init_cmd[] =
60 /* Pre-charge current */
64 /* Display Start Line */
68 /* Display Mode Normal */
74 /* Front Clock Divider */
76 /* Set gray scale table */
77 17, 0xb8, 1, 2, 3, 4, 5, 6, 8, 10, 12, 14, 16, 19, 22, 26, 30, 0xe3,
78 /* Second pre-charge period */
80 /* Pre-charge voltage */
87 * Hard-coded command shutdown sequence.
89 static const uint8_t exit_cmd[] =
96 * Hard-coded horizontal increment command.
98 static const uint8_t horizontal_inc[] =
104 * Write a sequence of data bytes to the LCD controller
106 static void lcd_dataWrite(const uint8_t *buf, size_t count)
112 /* Turn on the OLED display */
113 void rit128x96_lcd_on(void)
117 /* Loop through the SSD1329 controller initialization sequence */
119 for (i = 0; i < sizeof(init_cmd); i += init_cmd[i] + 1)
120 lcd_dataWrite(init_cmd + i + 1, init_cmd[i] - 1);
123 /* Turn off the OLED display */
124 void rit128x96_lcd_off(void)
127 lcd_dataWrite(exit_cmd, sizeof(exit_cmd));
130 /* Refresh a bitmap on screen */
131 void rit128x96_lcd_blitBitmap(const Bitmap *bm)
133 uint8_t lcd_row[bm->width / 2];
138 ASSERT(bm->width == LCD_WIDTH && bm->height == LCD_HEIGHT);
140 /* Enter command mode */
145 buffer[2] = (bm->width - 2) / 2;
146 lcd_dataWrite(buffer, 3);
150 buffer[2] = bm->height - 1;
151 lcd_dataWrite(buffer, 3);
152 lcd_dataWrite((const uint8_t *)&horizontal_inc, sizeof(horizontal_inc));
155 * Enter data mode and send the encoded image data to the OLED display,
159 for (l = 0; l < bm->height / 8; l++)
161 for (mask = 1; mask; mask <<= 1)
163 for (i = 0; i < bm->width; i++)
165 if (bm->raster[l * bm->width + i] & mask)
166 lcd_row[i / 2] |= i & 1 ? 0x0f : 0xf0;
168 lcd_row[i / 2] &= i & 1 ? 0xf0 : 0x0f;
170 /* Write an entire row at once */
171 lcd_dataWrite(lcd_row, sizeof(lcd_row));
176 /* Initialize the OLED display */
177 void rit128x96_lcd_init(void)
179 /* Initialize the communication bus */
182 /* Turn on the OLED display */