| ??? 06/28/06 21:01 Read: times |
#119289 - re Responding to: ???'s previous message |
> You have a lot of ...#0 at the start, it is far easier just to clear the entire RAM
How do I do that? I can see how to do it with a loop. Is there a better way? As for comments, I try to reduce the need for them by making the variable names self-documenting. I know that opinions differ. The problem is that even though I know TR0 is being set in pc_clk_isr, t0_isr is not being entered. I can't see how that can be unless I'm doing something horrible like using the wrong vector, not enabling the interrupt, or somehow turning off TR0 by accidentally writing into the SFRs. My mental checklist is that ET0 is on. The timer 0 interrupt vector is correct. It ljmps to the ISR. The ISR turns off TR0 and turns it back on. EA is on. TMOD is set for timer 0 to be an 8 bit auto reloader. TH0 is set to something reasonable. I just can't understand how it's possible that t0_isr is not being entered. In revisions past, I even cleared TF0, thinking maybe that was necessary. |
| Topic | Author | Date |
| timer0 problem | 01/01/70 00:00 | |
| LEDs and the eye | 01/01/70 00:00 | |
| I never turn it off | 01/01/70 00:00 | |
| use simulator | 01/01/70 00:00 | |
| what's in IE | 01/01/70 00:00 | |
| IE | 01/01/70 00:00 | |
| with reti, not ret? | 01/01/70 00:00 | |
| yes, reti. I know why ret would screw up | 01/01/70 00:00 | |
| time to show the formatted and commented | 01/01/70 00:00 | |
| I will work on cutting it down | 01/01/70 00:00 | |
| easy | 01/01/70 00:00 | |
| Timer O ISR | 01/01/70 00:00 | |
| addition | 01/01/70 00:00 | |
| that's good thinking | 01/01/70 00:00 | |
| enough guesses | 01/01/70 00:00 | |
| some code | 01/01/70 00:00 | |
| comments which you do not have | 01/01/70 00:00 | |
| re | 01/01/70 00:00 | |
| there is no such thing | 01/01/70 00:00 | |
| re | 01/01/70 00:00 | |
| EDT | 01/01/70 00:00 | |
| if you want get help... | 01/01/70 00:00 | |
| he can't do that | 01/01/70 00:00 | |
| ???splitting | 01/01/70 00:00 | |
if you look at me, you will know :) | 01/01/70 00:00 |