| ??? 01/11/05 16:01 Read: times |
#84761 - Calling printf from an ISR Responding to: ???'s previous message |
Calling printf from an ISR (Interrupt Service Routine) is definitely a Bad Idea! - especially if you call it from elsewhere in your code!!
printf is not reentrant - so calling it from an ISR could well end up with data corruption and all sorts of garbled output! printf it is also a very large function and, therefore, likely to take a long time to execute - not generally Good Things in an ISR. |
| Topic | Author | Date |
| Multiplication Problems and data types | 01/01/70 00:00 | |
| use unsigned int for totcount | 01/01/70 00:00 | |
| Wrong printf format specifier? | 01/01/70 00:00 | |
| yes i am using printf | 01/01/70 00:00 | |
| manual! | 01/01/70 00:00 | |
| using %d and %x | 01/01/70 00:00 | |
| %u | 01/01/70 00:00 | |
| Exactly what it says on the tin! | 01/01/70 00:00 | |
| Division problem? | 01/01/70 00:00 | |
| division problem in keil evaluation? | 01/01/70 00:00 | |
| Which Part? | 01/01/70 00:00 | |
| its ok i have sorted it! | 01/01/70 00:00 | |
| Still a problem, then... | 01/01/70 00:00 | |
| not so strange | 01/01/70 00:00 | |
| Not so strange? | 01/01/70 00:00 | |
| Need complete code! | 01/01/70 00:00 | |
| Like this | 01/01/70 00:00 | |
| code | 01/01/70 00:00 | |
| Calling printf from an ISR | 01/01/70 00:00 | |
| other interrupts wont get in the way | 01/01/70 00:00 | |
| ISR | 01/01/70 00:00 | |
| yes i see what you mean | 01/01/70 00:00 | |
No No Inside ISR | 01/01/70 00:00 |