Jayesh S. wrote:
> But when it comes to ARM, i havent
> found anything on what you need to program / how to program arm chips.
Some chips have a builtin boot-loader: You only need a COM port, for
example a USB-to-serial device like ftdi or other brand. Cheap solution,
somewhat slower than SWD due to the slower bitrate of a COM port.
So, in detail:
- The LPC from NXP, programmable with 'FlashMagic'. Use google,
FlashMagic is free downloadable and usable.
- The STM32Fxxx, programmable with: my own 'STM32Prog', downloadable on
www.mikrocontroller.net, subforum 'projekte&code', also with old 'erfos'
programmer, also with a piece of software from ST somewhat like
'bootloader demonstrator' or so.
- The chips from Nuvoton are somewhat special: they provide on the chip
a flash-area of 4K bytes or so (called LDROM), which is outside of the
common flash. In this LDROM you can install a bootloader of your own.
Nuvoton provides ready made bootloaders, but I do not know, if they
are pre-programmed in the chips on delivery.
Usually ALL modern Cortex chips are programmable with a suitable
JTAG/SWD programming dongle, as there are: Segger's J-Link (VERY
expensive!), Segger's J-Link-edu (expensive) and China-clones of them
(not expensive, but...)
The original Segger parts also program older ARM devices, which have no
SWD, but JTAG
The Chip-manufacturers (NXP, Nuvoton, ST) use to provide also dongles
like ST-Link, Nu-Link etc. - but this devices usually do the job only
with chips from the particular company.
Finally: using chips with bootloader you only need a cheap standard
electronics like a USB to Serial converter, the programming algorithm is
published and there are at least some independent programming Apps to do
the job. With JTAG/SWD you need special electronics, the programming
algorithms are usually not published by the manufacturers and the good
programmers are expensive or even VERY expensive.
That's it.
W.S.
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