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| 22:05.33 | S_J | anyone here done a lot of embedded development? i have a system i want to make and im thinking if i should use an rtos or not. I need wireless communication, input via buttons, writing to a display, running an engine. but if the engine runs when other tasks are running, does that make it a bad idea to use an rtos? it seems like when a task executes it is only what it does that should happen. but |
| 22:05.34 | S_J | maybe that is just stupid. And I think interleaving all this stuff by hand will get very inflexible and hard to reason about eventually. any input? |
| 22:06.00 | SpeedEvil | It depends. |
| 22:06.06 | SpeedEvil | What do you mean by 'an engine' ? |
| 22:06.17 | S_J | step motor |
| 22:06.40 | SpeedEvil | You can skip the problem somewhat in two ways. |
| 22:06.50 | SpeedEvil | A) Stepper motor controller chip. |
| 22:06.51 | S_J | Im all ears. |
| 22:07.01 | SpeedEvil | B) Interrupt driven stepper motor controller. |
| 22:08.13 | SpeedEvil | You basically have a small interrupt driver which only does the stepper motor control. The rest of the app runs in userspace, or at lower priority interrupts |
| 22:13.55 | S_J | ok, ty for the tips but that only takes care of the motor, i still have to interleave the other stuff, im afraid it will get really messy. |
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| 22:38.23 | S_J | also, RTOS:es for 8bit 8MHz MCU:s with 2kB RAM, is it even a good idea? |
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