| ??? 12/27/05 08:44 Read: times |
#105995 - What to say for that ignorance? Responding to: ???'s previous message |
Shivani Saini said:
1. Inserted pullups on P1.0 and P1.1 or not port1 is used as output no nead to pull it up,it is not used as input The port pin is simply an open drain FET either pulled up or floating. So if you output 1 on the port pin, the internal logic simply switch OFF the FET so that the full supply thruogh pull up comes to your port pin. By wired AND logic, you come to know the status of output signal. When you output 0 you think that it is an output pin, but as Abhishek said, the internal logic simply switch ON the FET, thus sinking the current caused by pull up and gives zero on port pin. So it is nothing like output or input, but simply 0 and 1. You can ouput 0 and can write 1 immediately (See for which commands you can use in so called input mode and in output mode). Read carefully about port pins of 8051. Shivani Saini said:
2. Tried new processor or not. tried 10 different processors,three different programmers What if there is a fault in your hardware and you changed infinite microcontrollers, its of no use. So I said explain your hardware! How can you say that without RAM clearing code the circuit is functioning well if your code itself is of 4 lines. Think about this, it may be a fluke or some serious problem of your hardware. Shivani Saini said:
3. Used few LEDs or not.
why to use led i am checking it with cro This is just because of your ignorance in making out a fruitful combination of above clearly stated suggestions. Shivani Saini said:
4. Inserted new small routines for ports operation or not (As I said in my previous post) what type of small routines code prgram is itself of fourline only,it is not 16k long program Again the same thing. Mere ignorance in reading the previous posts carefully. OUTPUT SOME SEQUENCE BEFORE POLLING THE P3.2 PIN. And you have not done. How can you conclude fault with just 4 lines code and not knowing it is whose fault? For that you need to insert lot many combinations to cover all possibilities of failure. Shivani Saini said:
5. Give some more info about your hardware. (How and what of the board) hardware is controller with reset cap,switch,dc regulated supply Am I a fool? Why I gave you this link http://www.iguanalabs.com/1st2051.htm in my previous post http://www.8052.com/forum/read.phtml?id=105808 I AGAIN REPEAT as it is told that there is no problem in code and the hex file, it is aperant that there is some problem in the hardware. So you should take this point very seriously. It is asked by so many people to explain your hardware. That does not mean UC, Caps, Crystals etc... Shivani Saini said:
6. Most important, have you checked each connections with the help of continuity meter? there is no point of checking connection as it works every time as i put a code without ram clearing Though it is so, just check them once. My posting may hurt you. But I am sorry for that. It is just to tell you that we are here to give suggestions and not solutions, it is only you who have to find out the problems with few hints by us. And we can give you suggestions based on your ability to define the problems. And most important is for defining the problem you must know where the problem is!!! "The darkest hour in any man's life is when he sits down to plan how to get money without earning it." - Horace Greeley. Regards Sarang |
| Topic | Author | Date |
| this code is not working | 01/01/70 00:00 | |
| You solved it! | 01/01/70 00:00 | |
| overreaction | 01/01/70 00:00 | |
| Humility ? | 01/01/70 00:00 | |
| Call it cultural difference... | 01/01/70 00:00 | |
| Sounds familiar | 01/01/70 00:00 | |
| thanks Jan Waclawek | 01/01/70 00:00 | |
| Keil's startup.a51 | 01/01/70 00:00 | |
| hex seems OK | 01/01/70 00:00 | |
| re hex seems OK | 01/01/70 00:00 | |
| And the switch? | 01/01/70 00:00 | |
| and switch | 01/01/70 00:00 | |
| Try a pull-up | 01/01/70 00:00 | |
| switch function | 01/01/70 00:00 | |
| Not at all | 01/01/70 00:00 | |
| reset cap | 01/01/70 00:00 | |
| yeah | 01/01/70 00:00 | |
| It can! | 01/01/70 00:00 | |
| points | 01/01/70 00:00 | |
| Some suggestions | 01/01/70 00:00 | |
| nope | 01/01/70 00:00 | |
| Use LEDs | 01/01/70 00:00 | |
| ok let me follow | 01/01/70 00:00 | |
| That sounds good ! | 01/01/70 00:00 | |
| try this code | 01/01/70 00:00 | |
and what good will that do? | 01/01/70 00:00 | |
| How? | 01/01/70 00:00 | |
| capital | 01/01/70 00:00 | |
| Thanks! | 01/01/70 00:00 | |
| I did the same thing recently | 01/01/70 00:00 | |
| At least... | 01/01/70 00:00 | |
| HORSEFEATHERS | 01/01/70 00:00 | |
| i think yopu didn't got the message | 01/01/70 00:00 | |
| of course it is not | 01/01/70 00:00 | |
| It's easy to fix the code | 01/01/70 00:00 | |
| no, he does not | 01/01/70 00:00 | |
| wrong suggestion | 01/01/70 00:00 | |
| it DOES NOT write to R0 | 01/01/70 00:00 | |
| RE: it DOES NOT write to R0 | 01/01/70 00:00 | |
| why the continued discussion | 01/01/70 00:00 | |
| Time zone | 01/01/70 00:00 | |
| just another guess | 01/01/70 00:00 | |
| She is most likely from India | 01/01/70 00:00 | |
| Irony | 01/01/70 00:00 | |
| Help me | 01/01/70 00:00 | |
| re help me | 01/01/70 00:00 | |
| What happens if? | 01/01/70 00:00 | |
| i will see | 01/01/70 00:00 | |
| "mov @r0,#00h" by "NOP, NOP"? | 01/01/70 00:00 | |
| A good idea | 01/01/70 00:00 | |
| nothing postive | 01/01/70 00:00 | |
| RAM fill ? | 01/01/70 00:00 | |
| re ram fill | 01/01/70 00:00 | |
| Simulator. | 01/01/70 00:00 | |
| Is the CPU really running? | 01/01/70 00:00 | |
| mov p1,r0 | 01/01/70 00:00 | |
| last hope | 01/01/70 00:00 | |
| Tell this first | 01/01/70 00:00 | |
| let me clear | 01/01/70 00:00 | |
| pull ups | 01/01/70 00:00 | |
| re pull ups | 01/01/70 00:00 | |
| a word on pull ups | 01/01/70 00:00 | |
| What to say for that ignorance? | 01/01/70 00:00 |