| ??? 08/25/06 05:52 Read: times |
#122986 - Looks clear enough to me Responding to: ???'s previous message |
Jon Ledbetter said:
yeah, I read that. Now show me how that answers the original question that I asked. OK: the original question was: ... I want to call P2.4 by a name like SW1? Now, you say It just seems so much more complicated to get the desired results than from assembler. If you're happy that you could easily do this in assembler, then you must understand that you're trying to access an individual bit within an SFR - this should take you directly to the manual section on SFRs: http://sdcc.sourceforge.net/doc/sdccm...0000000000 There you will see the syntax for an SFR bit: __sbit __at (0xd7) CY; /* CY (Carry Flag) */That seems clear enough to me - you just need to change the CY bit address in that example from 0xD7 to the bit address that you require; ie, __sbit __at (0xA4) SW1; /* P2.4 */QED! |
| Topic | Author | Date |
| SDCC Nooby Question | 01/01/70 00:00 | |
| Ok got it | 01/01/70 00:00 | |
| it\'s ok in Keil | 01/01/70 00:00 | |
| Yes... | 01/01/70 00:00 | |
| The reason is... | 01/01/70 00:00 | |
| C first | 01/01/70 00:00 | |
| Learning C | 01/01/70 00:00 | |
| if this is cut and paste then | 01/01/70 00:00 | |
| Semi-colon was it | 01/01/70 00:00 | |
| C is fidgety about error declaration | 01/01/70 00:00 | |
| Syntax error | 01/01/70 00:00 | |
| Going back and looking... | 01/01/70 00:00 | |
| It means | 01/01/70 00:00 | |
| Preprocessor output | 01/01/70 00:00 | |
| explanation | 01/01/70 00:00 | |
| Semicolon | 01/01/70 00:00 | |
| yes, Andy you are absolutely correct | 01/01/70 00:00 | |
| Semicolon - example | 01/01/70 00:00 | |
| backwards | 01/01/70 00:00 | |
| HUH? | 01/01/70 00:00 | |
| try this | 01/01/70 00:00 | |
| Dallas app notes | 01/01/70 00:00 | |
| False economy | 01/01/70 00:00 | |
| OK | 01/01/70 00:00 | |
| Learning from the tools | 01/01/70 00:00 | |
| #define and the preprocessor | 01/01/70 00:00 | |
| are you sure? | 01/01/70 00:00 | |
Yes! | 01/01/70 00:00 | |
| Hmmm... | 01/01/70 00:00 | |
| SDCC Manual | 01/01/70 00:00 | |
| Err... ya think? | 01/01/70 00:00 | |
| Looks clear enough to me | 01/01/70 00:00 |