| ??? 12/23/11 16:48 Read: times |
#185198 - re: Hardware or software Responding to: ???'s previous message |
Mahmood Elnasser said:
It works great with 4 analog / digital pins of microcontroller. Actually it was perfect first time. However looking at the way Arm development board did it they used a dedicated resistive touch screen controller chip ADS7843.
Generally is it better to choose a dedicated chip for this type of job or do it easy way using 4 analog / digital pins of a microcontroller and software? If you don't have to add a dedicated chip to the design to accomplish a task, then you save money -- BOM cost, board space, power-supply, etc. So if the processor can manage the task without otherwise impacting anything else it does, then leave off the specialist chip. If your processor is very busy and can't manage the new task, then you have no choice in the matter. -a |
| Topic | Author | Date |
| Resistive touch screen | 01/01/70 00:00 | |
| Good for you! | 01/01/70 00:00 | |
| re: Resistive touch screen | 01/01/70 00:00 | |
| Thanks | 01/01/70 00:00 | |
| re: Thanks | 01/01/70 00:00 | |
| GND reference | 01/01/70 00:00 | |
| Hardware or software | 01/01/70 00:00 | |
| re: Hardware or software | 01/01/70 00:00 | |
oh, you do | 01/01/70 00:00 | |
| analog in instead of open drain | 01/01/70 00:00 | |
| re: analog in .. | 01/01/70 00:00 | |
| tough to love :) | 01/01/70 00:00 | |
| software | 01/01/70 00:00 | |
| When I did Touch Screen Stuff | 01/01/70 00:00 | |
| GUI | 01/01/70 00:00 | |
| If you have ... | 01/01/70 00:00 | |
| Article | 01/01/70 00:00 | |
| Let Chinese do that | 01/01/70 00:00 |