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Take a look at /arch/arm/mach-s3c2410 directory of your embedded linux source tree. You'll see bsp of some boards (mach-xxx.c) which uses S3C2410. Inspect and try to revise one of them. It's easier than building a bsp from ground up.
BIOS, BSP firmware all different things.
* Firmware is equivalent to "software" in PC world. Unlike PC's, user can't load whatever he/she wants on the embedded board. So software on an embedded system is "firm", this is why software called as firmware in embedded world.
* BSP -board support...
An old post resurrected by an ad msg, anyway but might be useful someone else.
It is not possible to run linux kernel on 8-bit micro. You need at least a 32-bit microcontoller/microprocessor, prefably having MMU (memory management unit). For 32-bit's without MMU, uCLinux may help, but using a...
It could be a kind of EL (electroluminescent) film, usually driven by a signal smthg like 400Hz 80VAC. Basically its capacitive so draws little current.
embedded linux gui
I'm working on a ARM9 based linux device. Using ELDK, so far I've played with console, now it's time to write a program with graphical interface.
I've take a look at microwindows, fltk, sdl and directfb. SDL seems more promising. But still not easy as writing GUI programs...
linux for arm9
first you need a toolchain (compiler for arm, linux kernel sources, patches etc), and a root file system. You can check out three options below. Linuxlink have some help documents.
ELDK https://www.denx.de/wiki/DULG/ELDK
Timesys https://linuxlink.timesys.com/...
Re: lamp dimmer
You'll need a microcontroller, a triac, and a zerocross detector. Thats all. Check out microchip and atmel application notes. App. notes about motor phase control would describe the circuits more or less the same you need. Load would be lamp rather than a motor.
report on embedded system in automobile
Have you searched "EDA E-books Upload/Download" part of the forum? There are some books about automotive electronics, like :
Understanding automotive electronics
Automotive Electromagnetic Compatibility (Emc)
Handbook of Automotive Power Electronics...
Re: Diodes
BAT42's max forward current 200mA, PIC's should be 10mA~20mA.
Resistors could be down to (5-3,3-0,4)/10mA=130 ohm.
Does it disturbs the communication? I don't know. Depends on frequency. Either try to make a simulation using IBIS models of PIC and WUSB, or build up the circuit and...
implant layer
IC fabrication starts with a certain type dopped of silicon substrate, lets say p type. To make transsitor on this substrate you need to create n type layer. To make it a certain type of ions implanted by using ion implanter into substrate.
It's better to read vlsi book to get...
Re: resistors
I think 150MOhm is too high to measure with a ordinary battery powered multimeter reliably. A higer voltage measuring system would be nice. Beside since resistance too high, any dirt or humidit on PCB, even if the pcb coated with solder resist, will effect the resistance.
Re: Diodes
Should limit at 3,3V+Vdiode. But without any current limiting serial resistance, you might burn out either diodes or PIC's output ports. Is it possible to run PIC at 3,3V too?
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