| ??? 04/21/10 06:54 Read: times |
#175198 - dot line buffer Responding to: ???'s previous message |
This is part of 240x64 image. Verical line is formed by characters, horisontal lines can be formed easy (no shown on image). 2 fonts are used in this image- MS sanserif 13 and MS sanserif 26 - no scaling in firmware. There is one text line buffer - 50..80 bytes , which contains text characters and commands for - codetab change,font change, go_to_H_pixel command, go_to_V_pixel, invertchar, inverttext, undoinverttext, draw_H_line. Probably draw_V_line can be coded. When text buffer is ready, height of this line is calculated by analizing of text buffer- let say 15 points . Then 15 times dot line is recalciulated and sended to GLCD. Here is used dot line buffer - 30 bytes. Penalty is in speed and impossibility to draw other than horisontal/vertical lines. Profit is small buffer size. regards |
| Topic | Author | Date |
| nothing displayed on graphical lcd using P89V51rd2. | 01/01/70 00:00 | |
| Try to adjust contrast | 01/01/70 00:00 | |
| About The Bus Twist | 01/01/70 00:00 | |
| Start Extremely Simple | 01/01/70 00:00 | |
| But how will i know that data is getting written to the vari | 01/01/70 00:00 | |
| read it | 01/01/70 00:00 | |
| read it !! | 01/01/70 00:00 | |
| RE: registers that may be read/write | 01/01/70 00:00 | |
| Try the text mode | 01/01/70 00:00 | |
| That could be step 2 | 01/01/70 00:00 | |
| no text mode | 01/01/70 00:00 | |
| more on contrast | 01/01/70 00:00 | |
| signals | 01/01/70 00:00 | |
| Success! | 01/01/70 00:00 | |
| work to do | 01/01/70 00:00 | |
| i agree | 01/01/70 00:00 | |
| one more doubt | 01/01/70 00:00 | |
| an easier alternative | 01/01/70 00:00 | |
| Isn't this a question to the mentor? | 01/01/70 00:00 | |
| Need For A Buffer With GLCD | 01/01/70 00:00 | |
| dot line buffer | 01/01/70 00:00 | |
nothing displayed on graphical lcd using P89V51rd2 | 01/01/70 00:00 | |
| Thanks | 01/01/70 00:00 |