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???
09/14/12 08:02
Modified:
  09/14/12 08:03

Read: 1357 times


 
#188324 - Nokia 3310 display [PCD8544] dot problem
hello,
i was studying about PCD8544, n then i got a question in my mind.

if we can input 8-bits at one time in the ram of PCD8544, then howcome it's possible to manage one dot i.e. one pixel on the display,

if i want to make a dot on the
x=0,y=2
pixel then i will send the data serially as
[on the address x=0,y=0]
d7 d6 d5 d4 d3 d2 d1 d0
0 0 1 0 0 0 0 0

and after that, if i want to make a dot on
x=0,y=5
pixel then i will send data serially as
[on address x=0,y=0]
d7 d6 d5 d4 d3 d2 d1 d0
0 0 0 0 0 1 0 0

i am wondering that, sending the data second time, will erase the first dot, as it will over write the ram's address
please tell me how do we deal with this type of problem, i want to print dots on the screen randomly, but i am confused that my code will delete the other dots present in the same ram address...

List of 28 messages in thread
TopicAuthorDate
Nokia 3310 display [PCD8544] dot problem      Samarth Godara      09/14/12 08:02      
   NOTE-      Samarth Godara      09/14/12 08:32      
      Graphics Displays      Michael Karas      09/14/12 09:10      
         memory management      Samarth Godara      09/14/12 09:31      
            it would not      Erik Malund      09/14/12 09:50      
               more help      Samarth Godara      09/14/12 10:30      
                  Search engines?      Per Westermark      09/14/12 12:20      
                     confused      Samarth Godara      09/14/12 13:13      
                        No exact answer      Per Westermark      09/14/12 13:36      
                        Type of Thinking      Michael Karas      09/14/12 14:34      
                           I second that      Erik Malund      09/15/12 08:05      
                              doubt - interfacing memory with 8051      Samarth Godara      09/15/12 11:52      
                                 Why would you want to      Hal Albach      09/15/12 16:58      
                                    Don't overlook the "extras"      Richard Erlacher      09/15/12 20:29      
                                    why to use my own design      Samarth Godara      09/15/12 20:47      
                                       which is corect, but      Erik Malund      09/16/12 06:44      
                                       Wrong approach for India        Kalpak Dabir      09/16/12 06:50      
                                          my approach + new doubt [start execution]      Samarth Godara      09/16/12 09:06      
                                             Perhaps you've overlooked some options      Richard Erlacher      09/16/12 12:44      
                                                my circuiting & a Really surprising, Good Board      Samarth Godara      09/16/12 23:00      
                                                   Not all 805x variants are the same       Richard Erlacher      09/17/12 01:54      
                                                   Besides 8051 there are other....      Kalpak Dabir      09/17/12 02:00      
                                                   BEWARE      Erik Malund      09/17/12 07:38      
                                                      Shortest path      Per Westermark      09/17/12 09:05      
                                                   use direct wiring when using point-to-point      Richard Erlacher      09/17/12 09:30      
                                 Are you determined to fail?      Erik Malund      09/15/12 19:41      
                           SiLabs isn't the only possible solution      Richard Erlacher      09/15/12 20:22      
                        Have you considered the datasheet(s) and 8052.com's search?      Richard Erlacher      09/15/12 20:17      

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