| ??? 01/31/05 20:14 Read: times |
#86236 - The Stick! Responding to: ???'s previous message |
Stephen Harris said:
There is no mystery There were two mysteries: 1. The actual identity of the module you are using - this is the first time you have actually told us. 2. The nature of the serial input required by the hitherto unknown module. Knowing (1), we can now look at the datasheet and find the answer to (2) - which you had also failed so far to specify! It requires a TTL input. That is all that there is to it. Right - so it's a simple "keyed" transmitter: applying a TTL '1' to the input turns the transmitter ON; applying '0' turns it off. So the UART's asynchronous output should be fine to drive it[1]. Which takes us right back to my very first question: Why not use the 8051 UART? [1] Whether the resulting signal output form the receiver module will reliably drive a UART is harder to say, due to the vagaries of RF transmission... |
| Topic | Author | Date |
| P1 serial data | 01/01/70 00:00 | |
| Why not use the UART? | 01/01/70 00:00 | |
| Pin 10 and 11 | 01/01/70 00:00 | |
| back to basics | 01/01/70 00:00 | |
| OK | 01/01/70 00:00 | |
| will cost you anyhow | 01/01/70 00:00 | |
| Already Have | 01/01/70 00:00 | |
| What kind od serial data | 01/01/70 00:00 | |
| Type of data | 01/01/70 00:00 | |
| RTFM | 01/01/70 00:00 | |
| Wrong end of stick! | 01/01/70 00:00 | |
| Serial | 01/01/70 00:00 | |
| still unspecific | 01/01/70 00:00 | |
| ROM | 01/01/70 00:00 | |
| a ROM can not map anything | 01/01/70 00:00 | |
| End of wrong stick! | 01/01/70 00:00 | |
| Mystery? | 01/01/70 00:00 | |
| its still a mystery | 01/01/70 00:00 | |
| Module | 01/01/70 00:00 | |
| not yet | 01/01/70 00:00 | |
| UART is not a good choice | 01/01/70 00:00 | |
| Manchester | 01/01/70 00:00 | |
| You didn't get it, but that's OK | 01/01/70 00:00 | |
| The Stick! | 01/01/70 00:00 | |
| OK | 01/01/70 00:00 | |
| Yes | 01/01/70 00:00 | |
| Thanks | 01/01/70 00:00 | |
| Extra UART needed? | 01/01/70 00:00 | |
| Wires? Grounding?? | 01/01/70 00:00 | |
| uC to RF module interface wires | 01/01/70 00:00 | |
| disconnect the MAX232 | 01/01/70 00:00 | |
It looks like a straight tranceiver | 01/01/70 00:00 |