uControllers - stm32f030c8 - Nucleo f030r8
- stm32g071kb - stm32g474ce
- STM DevTools - STM32CubeIDE
- STM32CubeProgrammer - STlinkV3set
- STlinkV2 - Arduino IDE for STM32
- Microchip PIC - Microchip Atmel
The stm32f030c8 is similar to ATmega328, but comes with greater speed,
more ram and offers greater peripheral capabilities, while being cheaper
(≡1.3€/pcs.). So in my opinion this contoller is good replacement
for Atmega328. The only downside, it does not really fit into the Arduino
development environment. There is a STM32 nucleo Board, that comes with a
stm32f030c8, but that is sort of different in some ways, including the
missing STLink. So using the ArduinoIDE might turn out not to work
with the bare metall variation I use, but I didn’t try that one yet.
The only pity for me personally, some years ago I got a number of extremly
cheap pic24fj016ga02 for as little as 0.42€/pcs. and I am not
sure if I will ever use them in the numbers I got.
The stm32f030r8 that comes with a Nucleo f030r8 is in some ways my
testbed for the stm32f030c8 that I use in bare metall development. But
that is pretty much what I do with it after all. I guess that is kind of what
STM had in mind when the brought Nucleo boards into the market anyways, while
many use then as kind of a fast Arduino-Uno clone. This board seems to
work well along with the ArduinoIDE for testing some of the capabilities
of the controller, but is in my opinion pretty much useless for any
applications itself.
When I used ATmega family controllers, there was a point many years ago
when I turned towards Microchip controllers for a specific reasons. While
ATmega family was mostly faster compared with it equivalent family from
Microchip there still were some major differences, when it comes to
peripheral capabilities. Microchip did offer some more capabilities, like
NCO (Numeric Controlled Oscillator),
DAC (Digital to Analog Converter). Such additional built in
components where not so easy to replace without additional effort and expenses
for external components and the code that had to be written to make use of
them.
The only gap in all this was computing power, when it comes to more demanding
calculus and requirements for fast SRAM (Static Random Access Memory)
to be used. At that point the choice for me was to make use of the 32bit
MIPS family controllers from Microchip, like the pic32mx150f128.
They do not come with DAC, nor peripherals like a NCO,
but have great computational speed as well as quite large SRAM
sizes. The replacement for them when choosen from the stm32g0 family is
certainly something like the stm32g071kb.
In a pretty similar way I turned towards stm32 microcontrollers, since
they offer across the spectrum a homogene assembly language architecture,
and that is that of the ARM processor family. Pretty simple choice
...
stm32g474ce
/*todo*/
/*todo*/
/*todo*/
Well, there is no way to get around using a real device programmer /
debugger along with stm32 devices, since they come without ST-Link
when not using a Nucleo board of course. So somehow stuff needs to get into
the chip, which can be done via bootloader, but not the debugging part of
the job of course. And at least at that point there is no way around using
debugging hardware. The ST-LinkV3 is pretty fast in programming as
well as in debugging, which makes it kind of a near perfect choice to use.
The low price also makes it quite attractive.
The only real remaining question, whether to use it with or without the
extension that comes with the Set. Because the connectors of the base
STLinkV3 come in half pin pitch I personally would recommend using the
Set that has an addon board which offers normal pin pitch (2.56mm).
The cables that are available for half pin pitch (1.28mm) tend to have
their wires breaking already after a short amount of time, and by that half
pin pitch are imo kind of unreliable for regular real world use.
The alternative for the STLink-V3Set is the STLink-V2. It comes with
normal pitch (2.54mm) pins on its JTAG interface and an also quite
common connector for the SWIM programming / debugging interface.
/*todo*/
uControllers - stm32f030c8 - Nucleo f030r8
- stm32g071kb - stm32g474ce
- STM DevTools - STM32CubeIDE
- STM32CubeProgrammer - STlinkV3set
- STlinkV2 - Arduino IDE for STM32
- Microchip PIC - Microchip Atmel
Copyright © 2019, 2020 Andreas Gruber-Kersting, Berlin, Germany
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