| ??? 11/04/07 13:03 Read: times |
#146573 - Something like this Responding to: ???'s previous message |
3618 ;----------------------------------------------------------------------------
3619 ;
3620 ;
3621 ; print messages
3622 ; Dptr-> message in rom terminated by 00h
3623 ;
3624 ;
3625 ;----------------------------------------------------------------------------
3626 0E0C pstring
3627 0E0C E4 clr a
3628 0E0D 93 movc a,@a+dptr
3629 0E0E 60 06 jz lcdp_2
3630 0E10 12 0E FA lcall pchar
3631 0E13 A3 inc dptr
3632 0E14 80 F6 sjmp pstring
3633 0E16 lcdp_2
3634 0E16 22 ret
4509 12D7 pwrlo_str
4510 12D7 50 4F 57 45 52 db 'POWER SUPPLY LOW',0
12DC 20 53 55 50 50
12E1 4C 59 20 4C 4F
12E6 57 00
This above is the listing from the assembler I use (AD2500)- you may need to read you assmebler documentation to see how it does it (they're all different!). You can see for the db 'POWER SUPPLY LOW' that the assembler does the work of ascii translation for you. Also, for the pstring routine, it calls pchar - write code to send A out the serial port. So, to send the power low string , I would write: mov dptr,#pwrlo_str acall pstring As Joseph mentions, the uart takes care of stop bits and start bits. |
| Topic | Author | Date |
| DB-9 Connector to 8052 protocol | 01/01/70 00:00 | |
| HEX Values? | 01/01/70 00:00 | |
| grunt work | 01/01/70 00:00 | |
| Nope | 01/01/70 00:00 | |
| and how about the asterick? | 01/01/70 00:00 | |
| Asterix the Gaul | 01/01/70 00:00 | |
| Stop Bit | 01/01/70 00:00 | |
| Something like this | 01/01/70 00:00 | |
| C format string | 01/01/70 00:00 | |
| CR LF hex values | 01/01/70 00:00 | |
| Experience? | 01/01/70 00:00 | |
| old hermit | 01/01/70 00:00 | |
| These days... | 01/01/70 00:00 | |
| LP programming | 01/01/70 00:00 | |
| maybe | 01/01/70 00:00 | |
Needhams | 01/01/70 00:00 |