Procesory ARM

Všeobecné informácie

• ToDo
• https://embedded.fel.cvut.cz/

1. Comparison of Cortex-M Architectures

• Most information here taken from https://en.wikipedia.org/wiki/ARM_Cortex-M*

1. 1. M0

- **ARM Architecture Version**: ARMv6-M - **Pipeline**: 3-Stage - **Comp Arch**: von Neumann - Optimised for physical silicon die size + cost - Supports Thumb-1 and some of Thumb-2

1. 1. M0+

- **ARM Architecture Version**: ARMv6-M - **Pipeline**: 2-Stage - **Comp Arch**: von Neumann - Superset of M0 - Optional MTB (micro trace buffer) - Optional MPU (memory protection unit)

1. 1. M1

- **ARM Architecture Version**: ARMv6-M - **Pipeline**: 3-Stage - **Comp Arch**: von Neumann - Optimized core especially designed to be loaded into FPGA chips.

1. 1. M3

- **ARM Architecture Version**: ARMv7-M - **Pipeline**: 3-Stage + branch speculation - **Comp Arch**: Harvard - All Thumb instructions - H/W divide - Saturation arithmetic - Optional MPU (memory protection unit)

1. 1. M4

- **ARM Architecture Version**: ARMv7E-M - **Pipeline**: 3-Stage + branch speculation - **Comp Arch**: Harvard - Essentially M3 + DSP - DSP: MAC + SIMD - Optional FPU - Optional MPU (memory protection unit)

1. 1. M7

- **ARM Architecture Version**: ARMv7E-M - **Pipeline**: 6-Stage + branch speculation - **Comp Arch**: Harvard - High performance, ~2x efficiency of M4 - Superscaler - 64-Bit Instruction + Data buses

Vysvetlivky:

• (m) - Matlab / Simulink Support Package Available
• (M) - Matlab / Simulink Support Package Available and Tested
• (-S) zatial neexistuje podpora pre Simulink
• (mbed) - mbedOS available (v2 - version 2), (v5, v6) verzia
• (+A,a) - Arduino programming possible, tested/not tested

mbedOS

• Samostatná stránka Mbed OS
• API pozri dokumentáciu tu https://os.mbed.com/docs/mbed-os/v6.16/apis/i-o-apis.html

Procesory Nordic Semiconductor

• micro:bit (M),(mbed2),(A)
  • nRF51822 - Cortex M0 (microbot v1.3 a 1.5)
  • nRF52833 - Cortex M4 (microbit v2)
  • Attila Hriňa: Procesory ARM. Bc. práca FEI STU 2023
  • Pozri aj Mbed OS s vzorovymi programami
  • Simulink: https://www.mathworks.com/help/supportpkg/microbit/ alebo aj https://www.mathworks.com/academia/courseware/microbit.html
  • Simulink: https://www.mathworks.com/matlabcentral/fileexchange/61738-simulink-lessons-and-examples-for-bbc-micro-bit?status=SUCCESS
• Arduino Nano 33 BLE Sense
  • nRF52840 - Cortex M4

Procesory NXP

Rozličné FRDM dosky, doplň prehľad

• FRDM KL-25Z (M),(mbed) - Cortex M0+

Procesory STM32

Marking:

STM	Manufacturer (STMicroelectronics) 	—-
32     32-bit MCU 	                        —- 
 F     Type of MCU 	                        F: Mainstream, L: Low power, H: High Performance, W: Wireless, C: Cost effective
 1	ARM Core Type 	                        0: M0, 1: M3, 2: M3, 3: M4, 4: M4, 7: M7
03     Line of MCU 	                        Details about speed, peripherals, Silicon Process, etc.
 C     No. of Pins 	                        F: 20, G: 28, K: 32, T: 36, S: 44, C: 48, R: 64,66, V: 100, Z: 144, I: 176
 8     Flash Size 	                        4: 16, 6: 32, 8: 64, B: 128, C: 256, D: 384, E: 512, F: 768, G: 1024, H: 1536, I: 2048 KB
 T     Package 	                        P: TSOOP, H: BGA, U: VFQFPN, T: LQFP, Y: WLCSP
 6     Temperature Range 	                6: -40°C to 85°C, 7: -40°C to 105°C

Programovanie:

• 0 Bare Bone
• 1 CMSIS
• 1 STM LL
• 2 HAL (CubeMX)
  • https://www.waveshare.com/wiki/STM32CubeMX_Tutorial_Series
• 2 libopencm - https://github.com/libopencm3/libopencm3-miniblink/blob/master/template_stm32.c
• 3 API napr. mbedOS
• 3 Arduino https://github.com/stm32duino
• 4 Simulink https://github.com/ATM-HSW/mbed_target

Courses:

• https://www.youtube.com/@steppeschool3629

• Pill
  • Blue Pill STM32F103C8T6 (a) (Cortex M3 @72 MHz, vrátane klonu CKS32F103C8T6 z Techfun.SK)
    • CMSIS priklady tu: https://github.com/sandynomike?tab=repositories
    • mbedOS https://os.mbed.com/users/hudakz/code/mbed-os-bluepill/

• • Black Pill STM32F411CEU6 (a) (Cortex M4 @100 MHz, aj z Techfun.SK
    • Priklady od bare bone po HAL: https://www.codeinsideout.com/blog/stm32/blink/
    • CMSIS tu https://mcturra2000.wordpress.com/2021/11/18/using-cmsis-and-systick-to-blink-an-led-on-an-stm32f4/
    • BareBone tu https://github.com/lowbyteproductions/bare-metal-series/ (GCC and libopencm3)

• Nucleo boards
  • STM32C031C6T6 (mbed?)(-S)(+A) - najmenší 32-bitový procesor, cenovo ako náhrada za 8-bitové (2023)
    • Web:
    • YouTube MOOC course: https://www.youtube.com/playlist?list=PLnMKNibPkDnG_5q6DLNTMSBo5V24VXUDn
    • Potom rozširujúce príklady tu https://github.com/STMicroelectronics/STM32CubeC0
  • STM32L073RZT6 Cortex M0+ @32 MHz (-S)(+A)
    • mbed: https://os.mbed.com/platforms/ST-Nucleo-L073RZ/
    • Vojtěch Skřivánek: Programujeme STM32: zdolejte jednočipy profesionálů, TZ-one, 2022.
    • Vojtěch Skřivánek: Programujeme STM32: bez knihoven, TZ-one, 2022.
    • Vojtěch Skřivánek: Používáme FreeRTOS na mikrokontroleru STM32, TZ-one, 2023.