| ??? 11/09/07 08:06 Read: times Msg Score: +1 +1 Good Answer/Helpful |
#146806 - I don't think there's a "TX buffer" ... Responding to: ???'s previous message |
... on a "vanilla" '51 UART.
I tried scouring the docs for a register which would be set when the TX buffer was empty. Is there such a thing for the '51? Writes to SBUF end up directly in the shift register. At least that's how I read the diagram in the hardware section in the "bible". There's no 1-byte "buffer" (which I have seen on other chips, like Atmel AT91SAM7S, where you can actually write one byte and get a TXBUFE before the byte is sent out completely). |
| Topic | Author | Date |
| UART TX ready | 01/01/70 00:00 | |
| you are describing TI | 01/01/70 00:00 | |
| Tutorials | 01/01/70 00:00 | |
| which derivative? | 01/01/70 00:00 | |
| I don't think there's a "TX buffer" ... | 01/01/70 00:00 | |
| a Hard lesson I learned long ago | 01/01/70 00:00 | |
Thanks everyone for your help! | 01/01/70 00:00 |