??? 03/06/07 18:10 Read: times |
#134397 - FIRST, THEN, THEN, THEN Responding to: ???'s previous message |
That is all i need to know for now to kick off with my coding
I doubt that very much you can not just jump into coding, you need to knoe the basics first. Where do you initialie the UART, what inteface do you use, you ask about totally impossible assembler instructions.... You seem to want to jump into the pool before you have learned to swim - you WILL drown FIRST How does a Pin 3.1 which is also called as TxD differs from other port if i want get familiar with "the bible" ch 3 has lots of stuff on the UART. THEN a byte of data out from the TxD (P3.1) to a modem verify that your modem is TTL or RS232, if TTL it is a wire, if it is RS232 you will need a MAX232(equivalent) between the uC and the modem. THEN MOV SBUF, #ATD1234567 ? read the manual for your assembler THEN In the FAQunder the heading "Serial Communications Questions" there is a lot of info. Erik here are the links to "the bible" Chapter 1 - 80C51 Family Architecture: http://www.nxp.com/acrobat_d...ARCH_1.pdf Chapter 2 - 80C51 Family Programmer’s Guide and Instruction Set: http://www.nxp.com/acrobat_d...UIDE_1.pdf Chapter 3 - 80C51 Family Hardware Description: http://www.nxp.com/acrobat_d...WARE_1.pdf |