Hai All
Liitle consider that ARM type Controllers will be the next projects,Cause some reason about voltages and I/O capabilities.
There's numberous type of ARMs.
I'm very pleasant with SAM types,STM32 types,Nuvoton,NXP,Renesas types or probably ARM clone types made in China.
To made finished products something like picture below for beyond projects.
Any info for ARM kits type will be welcome.
Many Thank's
clawson 
I have no idea what you are asking here. Are you simply looking for Cortex dev boards? Obviously this is a Microchip site so one would probably be moved to recommend:
https://www.microchip.com/en-us/...
But the range of ARM devices is immense from 8pin DIP Cortex M0 up to 300+ BGA packaged Cortex A application processors. So you first need to identify the level of project you want to use an ARM in. If you are talking about "equivalent to 8bit AVR" then perhaps start at the Cortex M0/M0+ end of things ? That would be "SAM-D" products in the Microchip world:
https://www.microchip.com/en-us/...
Specifically something like this $21 board that includes a debugger might be a good "entry level":
https://www.microchip.com/en-us/...
or perhaps look at "Arduino Due" which uses a Microchip SAM3.
Thank's Cliff for Info's inclueded the prices
ST also has a nice collection of affordable dev boards. Just go to your favorite distributor and search for "STM32 Nucleo".
edit: whoa, stocks really are running low...
Thank's El Tangas for info
I find ARM very complex, I wish microchip had microcontrollers which are classic AVR8 but made faster. Retaining the original architecture.
I wish microchip had microcontrollers which are classic AVR8 but made faster. Retaining the original architecture.
I'd like multi-core AVR, I think that would be useful for real time applications. And this reminded me of the Raspberry Pi Pico, which is a dual core cortex-M0.
The RP Pico is actually the only raspberry product still in stock at my local distributor. I think I'll go there and buy a couple :)
I wish microchip had microcontrollers which are classic AVR8 but made faster.
So far, all my projects have been fast enough in assembler. It often needs 4 MHz at most.
Instead, I would urgently wish for a more intelligent architecture. Easily adjustable clock, easier to use usart/spi/i2c interfaces, wireless interfaces, universal equivalent registers with automatic status saving in interrupts. Universally configurable equivalent pins, automatic inputs at all ADC and DAC channels ....
The current ARM controllers don't do anything better here, just more complicated.
universal equivalent registers with automatic saving in interrupts.
Yup an alternate register file that would be swapped automatically for interrupt routines. The Z80 had something like that (not automatic IIRC but still very useful).
The Z80 had something like that
The Z380 was even better equipped in this respect if I remembered correctly. Crazy to shed a tear over such old chips today.
clawson I find ARM very complex, I
gchapman Liitle consider that ARM type Controllers will be the next projects,
RISC-V Exchange: Cores & SoCs - RISC-V International
RISC-V | MCU+ - NanjingQinhengMicroelectronics (WCH)
https://lcsc.com/products/Microcontroller-Units-MCUs-MPUs-SOCs_11329.html?keyword=ch32v103
WCH CH32V103 General-Purpose RISC-V MCU Offers an Alternative to GD32V RISC-V Microcontroller - CNX Software (DNS error)
Sipeed Longan Nano V1.1 Development Board - Seeed Studio | Mouser (GD32V)
Build an open source-hardware Allwinner D1s RISC-V Linux SBC for under $10 - CNX Software (DNS error)
edit : DNS
Yeah, I meant the traditional tiny/mega only. The simple nature is addictive.
clawson Some consider RISC-V.
gchapman I'd like multi-core AVR,
I think that would be useful for real time applications.
The RP Pico is actually the only raspberry product still in stock at my local distributor.
megaAVR 0-series | Page 4 | AVR Freaks
SecureAVR® are now at WISeKey.
Secure Microcontrollers - WISeKey
Common Functionality | USART | Migration from the megaAVR® to AVR® Dx Microcontroller Families
Raspberry Pi is now a microcontroller | AVR Freaks
easier to use usart/spi/i2c interface
They seem petty simple to use. set a few adjustment & use them.... Maybe adding arbitrary bit length selection to spi would be nice, or assign some memory to an automatic UART ring buffer.
They should be able to make a 100MHz version...maybe worried about eating into other products, like PICs.
I wish the megas offered the PLL multiplier, rather than just the tiny's. They could dump some prescalers & add 32bit timers
set a few adjustment & use them
How about just setting the baud/speed rate in plain text, staging the data into a buffer, and "pressing start" in an IO register bit? How about simply finding received data in a buffer? Same principle for Uart, SPI, I2C.
So many simplifications could be made. Instead, more and more stupid configuration/programming effort.
This is the wrong direction of development, makes software more complex, more error-prone, less portable between such stupidly structured, different controller architectures.
How about just setting the baud/speed rate in plain text
Not sure what that means, nothing we send to the avr is in plain text, even opcodes (ADD, BRNE), etc are not sent as plain text.
Now that might be an interesting idea---the AVR could include some decoder, so we could send it plain text, but just as well to let the compiler handle the conversion.
Maybe you are referring to newer AVR's that have almost too many options...then it can be information overload of possible adjustments.
So far you have had good luck with AVR, let it continue!
gchapman ... assign some memory to an automatic UART ring buffer.
They should be able to make a 100MHz version...maybe worried about eating into other products, like PICs.
CMOS power dissipation is proportional to frequency and the square of the voltage (AVR Dx, coin cell instead of battery)
I wish the megas offered the PLL multiplier, rather than just the tiny's.
AN8046 AVR1304: Using the XMEGA DMA Controller | Application Note | Microchip Technology
[PDF, top of page 8]
3.1 Double buffering
dsPIC33CH128MP508 | EEMBC Benchmark Score Viewer
Clock Sources | Migration from the megaAVR® to AVR® Dx Microcontroller Families (PLL in next to last paragraph)
megaAVR follow-on AVR Dx has a PLL.
THANKS! I will keep that thought, since I often need the higher freq. It has been a while since I did a search, sadly they don't tally that feature
gchapman wireless interfaces,
https://www.mouser.com/c/semiconductors/wireless-rf-integrated-circuits/rf-system-on-a-chip-soc/?q=%22RISC-V%22 (RISC-V, Wi-Fi, Bluetooth 5)
conversely
https://www.microchip.com/en-us/product/pic32mz1025w104132#buy-from-store
via
PIC32MZ-W1 Wi-Fi® SoC and Module Family | Microchip Technology
megaAVR follow-on AVR Dx has a PLL.
THANKS! I will keep that thought, since I often need the higher freq. It has been a while since I did a search, sadly they don't tally that feature
Yeah... but the only peripheral that is connected to the PLL is the type D timer, you can't clock anything else from the PLL, including the CPU.
And the type D timer is the most complex peripheral I've ever seen on an AVR, it takes quite a while to figure out.
js 
I'd like multi-core AVR
I'd like AVR......if I could get any....
I'd like AVR......if I could get any....
Yeah... it's getting hard. There are still some AVR-Dx around, at least there were some last time I checked.
Yeah... but the only peripheral that is connected to the PLL is the type D timer, you can't clock anything else from the PLL, including the CPU.
And the type D timer is the most complex peripheral I've ever seen on an AVR, it takes quite a while to figure out.
I haven't looked into the timer D, but as long as it can gen PWM, I'd happy. I always wished the '328 had PLL. Because of the PWM fine time slicing, a fast clock is often needed to gen a speedy PWM.
Strange, in the other AVRs let the PLL connect to more than one timer (I think).
gchapman Somewhat concur as the RISC-V ecosystem is growing.
GitHub - espressif/arduino-esp32: Arduino core for the ESP32
Been stated that ESP32-C3 is the follow-on to ESP8266.
A comparison of ESP32-S3, ESP32-C3 and ESP8266 modules (Sponsored) - CNX Software
gchapman At least one AVRxm in yesterday's microchipDIRECT lead time report is heading in the right direction (37 weeks instead of 52)
AVRe+, and such, logjam should break sometime this year.
Maybe similar for most AVRxt though some (most?) AVR Dx have the lesser lead time.
https://www.microchipdirect.com/product/ATXMEGA128A1U-ANR
Lead Time | World's Largest Inventory of Microchip Products
edit : that specific XMEGA is back to 52 weeks
gchapman
... the other AVRs let the PLL connect to more than one timer (I think).
[page 57]
Figure 6-1. The Clock System, Clock Sources, and Clock Distribution
js ATXMEGA32E5-AN
Out of Stock - Arriving Soon
Additional Stock Arriving. Order Now to Secure
2,750 can ship on 19-Jan-2023
Lead Time For Additional Quantities
Additional quantities can ship by 04-Apr-2023
So SOON for MC is at least 9 months! One can make a human in the same time......
gchapman One can make a human in the same time......
yet the first three months of one's life after birth is a fight for life.
Said that our gestation is really twelve months ... kinda like some projects ... 9 months to get the parts then 3 months of all-nighters
Additional quantities can ship by 04-Apr-2023
I keep getting excited, then notice the wrong year!
They should be able to make a 100MHz version...maybe worried about eating into other products, like PICs.
clawson
I think if I was starting out to use ARM I would be very tempted to look at Raspberry Pico RP2040. They manufactured tons of stock "up front" so there do not seem to be supply problems like other silicon right now.
Your $4 buys you a board with a DUAL-core 133MHZ ARM on it:
among other things they have these intriguing (9 opcode) sub-processors on board ("PIO") that can be programmed to do pretty much any kind of common "bit shifting" IO operation (like I2C, SPI, I2S and even things like VGA and HDMI signaling!). One key thing is the quality of the supplied libraries and especially the class leading documentation:
https://www.raspberrypi.com/prod...
https://projects.raspberrypi.org...
https://www.raspberrypi.com/docu...
The two CPUs can be overclocked to 300-400MHz for the more "demanding" project ;-)
I've had a couple of exchanges with Eben Upton on Twitter (man behind "Raspberry") and he seems a thoroughly pleasant kind of guy.
Ok,I’m looking the big parts here..
clawson Jeckson wrote:Do you mean Cortex A ?the big parts here..
Thank you very much for info
What I meant small parts are ARM32 micro's such as:STM Discovery,STM32 Nucleus,STM32 Black pills and Blue Pills,Nuvoton kits,wch-ch32v2(X)03 kits,(SAM32/PIC32) kits,NXP Arm32 kits and Raspberry Pico.
Meanwhile the big parts:
For WS-2B A200 are:Very expensive...above >>100US$ uhh
Pipes
gchapman re Arm Cortex-M and Cortex-A, the ones at Emcraft Systems create SoM that run Linux in addition to some RTOS; an RTOS may be a match to your requirements (IIRC in post #1)
wch-ch32v2(X)03 kits,
(SAM32/PIC32) kits,
PIC32 can run BSD variants.
Linux and System-On-Modules: i.MX RT1050, STM32F7, SmartFusion2, i.MX 8M, i.MX 6ULL, i.MX 6SoloX (Emcraft Systems)
Sipeed LicheeRV Nezha CM C906 RISC V Core Board Supports Linux WAFT|Demo Board| - AliExpress
PIC32MZ DA | Microchip Technology
What screen resolution does the PIC32MZ DA support? (Microchip Technology Technical Support)
threadx/LICENSED-HARDWARE.txt at master · azure-rtos/threadx · GitHub
guix/LICENSED-HARDWARE.txt at master · azure-rtos/guix · GitHub
Giant Board | Crowd Supply (SAMA5D2)
Giant Board - Crowd Supply | Mouser
Home · sergev/LiteBSD Wiki · GitHub (PIC32MZ)
RetroBSD · GitHub (PIC32MX)
Fianawarrior 
Yeah, ARM is great, I just love it when my posts disappear because someone smelt something ARMish about them.
clawson Yeah, ARM is great, I just love it when my posts disappear because someone smelt something ARMish about them.
Fianawarrior Fianawarrior wrote:posts about ARM do NOT "disappear". They get moved to the ARM section of this message board.Yeah, ARM is great, I just love it when my posts disappear because someone smelt something ARMish about them.
I know, but no one goes there. It's very lonely in that community.
but no one goes there. It's very lonely in that community.
I go there! It's better attended the the ARM Forums at ARM :-(
But yeah, I think The Industry in general lacks an appreciation of the value of "community support", where "community" means includes a large number of people asking "stupid" questions that in fact lots of people need/want to know the answers too...
Raspberry Pico had 2/4/8/16 MB versions
Not sure what that means, nothing we send to the avr is in plain text, even opcodes (ADD, BRNE), etc are not sent as plain text.
I meant clear, concrete information: How many MHz, how many bauds... No cryptic parameters that only arise after studying the data sheet. Sensor data could also be output in the same way. For example, temperatures in °C and not first calculated in a cumbersome way using any calibration data.
Wireless is difficult to compete in though LoRa has significant future growth.
Not over long distances, but for example as a low-performance I2C replacement.
ST derivatives also cheap and Raspberry Pico seems rationally in experiments.
ST derivatives also cheap
There are several companies that make "STM32 compatible chips", they are somewhat cheaper but I don't think it's such a big difference. Probably not big enough to risk using a clone with is less known and less supported.
Here is an article about them:
https://hackaday.com/2020/10/22/stm32-clones-the-good-the-bad-and-the-ugly/
However, in this era of shortage, having several drop-in replacements to choose might be a good thing (?) if they really do behave the same, or close enough for a given application.
clawson
A recent thread on Twitter:
The point being that RP2040 is apparently about 10 times cheaper than any near competitor.
remind us when over clocked the PCs and added Aluminum plates.
clawson
Video about overlocking RP2040 from 133MHz to 420MHz...
https://www.youtube.com/watch?v=...
Apparently you use the ability to access flash around the 300MHz mark.
