Timeline for Using UART's TX & RX for Separate Functinality
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 18, 2016 at 8:13 | answer | added | Mandar Sansare | timeline score: 0 | |
| Apr 18, 2016 at 7:48 | comment | added | AlphaGoku | The PC will obviously show junk at its RX cos you havent connected uC TX to PC RX. As for your uC not reciving proper data from PC,it has to baud rate mismatch between uC and PC. | |
| Apr 8, 2016 at 22:21 | comment | added | SoreDakeNoKoto | Let me understand: Did you connect BOTH the GSM module's TX and RX pins to the PIC's RX and TX respectively? What baud rate are you using for this communication b/w PIC and GSM module? Did you simultaneously connect the PC's TX and/or RX to the PIC's RX and/or TX respectively, while the PIC is connected to the GSM module? This is wrong. If you didnt, then what baud rate is used between PC and PIC? Also provide any code you have written, as well as schematic. | |
| Apr 8, 2016 at 21:36 | answer | added | Voltage Spike♦ | timeline score: 1 | |
| Apr 8, 2016 at 19:52 | comment | added | Chris Stratton | This sounds very much like you have the wrong baud rate. A few devices can probably have distinct transmit and receive baud rates, but many cannot. So you should probably set the PC to talk at the same baud rate as the GSM module to simplify things for your "split" UART. Beware that operating the GSM module "one way" may not be wise - without receiving and parsing its responses you won't know if it is accepting your commands or even registered on the network. Though if the system is unattended there may not be a lot you can do in that case, except perhaps eventually resetting the GSM module. | |
| Apr 8, 2016 at 19:24 | comment | added | Mandar Sansare | yes! Ground and signal wire | |
| Apr 8, 2016 at 19:23 | comment | added | DigitalNinja | Does that 2-wire serial cable to the PC carry ground? | |
| Apr 8, 2016 at 19:12 | history | asked | Mandar Sansare | CC BY-SA 3.0 |