| ??? 01/25/09 00:16 Modified: 01/25/09 00:30 Read: times |
#161722 - Not true Responding to: ???'s previous message |
Note: Joe has re-written his post since this reply. The quotes below are from the original post.
Joe Gold said:
There GSM product will have either UART RS232 serial in/out (terminal) or typically 3v CMOS UART serial in/out (module) No, that is not true. Typically, a GSM "module" is a bare unit without RS232 - to get RS232, you would have to buy a cased product, and it would probably be known as a "modem" (or, perhaps, a "terminal"). The bare GSM "modules" very often do not have standard logic-level interfaces like 3V - some today have 1.8V interfaces! You really can't give any generalisations on this - there is no alternative but to read the datasheet for the specific device in question. I find it best to get a GSM with RS232 in/out so you can connect it to a IBM PC and use a terminal program like Hyperterminal to send the AT commands 1st. That is a very good idea! |
| Topic | Author | Date |
| rs232 serial communication and microcontroller | 01/01/70 00:00 | |
| Cross-post | 01/01/70 00:00 | |
| GSM Module serial interface | 01/01/70 00:00 | |
| Not true | 01/01/70 00:00 | |
| Ive corected my post | 01/01/70 00:00 | |
| That's confusing! | 01/01/70 00:00 | |
| A case in point | 01/01/70 00:00 | |
| depends... | 01/01/70 00:00 | |
| more spesipic | 01/01/70 00:00 | |
| Set up matrix | 01/01/70 00:00 | |
| More info required! | 01/01/70 00:00 | |
| Layers | 01/01/70 00:00 | |
RS232 and Serial Communications | 01/01/70 00:00 | |
| Resistor is NOT an answer! | 01/01/70 00:00 |