| ??? 01/13/09 20:37 Read: times |
#161501 - reply to Jan Responding to: ???'s previous message |
Jan Waclawek said:
And you recklessly throw it away, clearing it and taking no other action upon detecting it set, signalling you "I am ready with transmission, you may now send an another character"... I added this line in the ISR before TI bit was cleared: jnb TI,$ still it does not work. The ISR routine should then wait until TI is set before clearing TI, shouldn't it? Isn't that the right way to do it? Jan Waclawek said:
What you should do now is to set your own flag - e.g. a bit in the bit addressable RAM - in the same moment when you clear TI in the ISR. And then the "main" shall wait until this flag is set, clear it and send the next byte then. Sounds like a good idea. Thank you for the suggestion, I will try it. |
| Topic | Author | Date |
| serial interrupt? | 01/01/70 00:00 | |
| Your Problem | 01/01/70 00:00 | |
| still not working | 01/01/70 00:00 | |
| you need to flag somehow the end of transmission | 01/01/70 00:00 | |
| reply to Jan | 01/01/70 00:00 | |
| Several | 01/01/70 00:00 | |
| To Hans | 01/01/70 00:00 | |
| And my reply to Charles | 01/01/70 00:00 | |
| no interrupts works | 01/01/70 00:00 | |
| the solution | 01/01/70 00:00 | |
| Isn't that what Hans said? | 01/01/70 00:00 | |
| Perfectly????? Prolly should look again. | 01/01/70 00:00 | |
| Got to look ahead... | 01/01/70 00:00 | |
| Another thing to consider | 01/01/70 00:00 | |
| reply to Andy Neil | 01/01/70 00:00 | |
| reply to Michael Karas | 01/01/70 00:00 | |
| why is this a bad idea | 01/01/70 00:00 | |
| Exactly why not perfect !!! | 01/01/70 00:00 | |
| response to Jan Waclawek | 01/01/70 00:00 | |
| interrupts forever | 01/01/70 00:00 | |
| nope | 01/01/70 00:00 | |
Re: Erik | 01/01/70 00:00 | |
| if you HAVE to mix ... | 01/01/70 00:00 |