| ??? 03/30/10 16:06 Read: times |
#174642 - no text mode Responding to: ???'s previous message |
1. this lcd module does not provide a text mode.(at least i didn't find any description as such in the datasheet.)
2. we are using P89V51rd2 at 12Mhz (pretty slow i guess). so i didn't put any delays in the code. 3. While connecting port0 to the lcd data lines we used pull up resistors. 4. The only instructions available with the lcd module are i. turn on display (0x3f) ii. turn off display( 0x3e) iii. set y address (0x40|y_address) iv. set page address (0xb8|page) v. set start line address ( 0xc0|startline_address) v. read status vi. read display data vii. write display data So which registers do i read? and how? 5. the connections for the potentiometer - i. wiper to V0 ii. ccw to ground iii. cw to VEE of lcd module are they right? |
| 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 |