05-embeddedprog.md

Embedded Programming

• architectures

  • von Neumann, Harvard
  • RISC, CISC
  • microprocessor, microcontroller
  • GPU, TPU
  • FPGA, TinyFPGA, ASICs, difference

• memory

  • registers (instructions)
  • SRAM (fast)
  • DRAM (big)
  • EEPROM (non-volatile)
  • FLASH (programs, strings)
  • fuse (configuration)

• peripherals

  • ports
  • A/D
  • comparator
  • D/A
  • timer/counter/PWM
  • USART
  • USB
  • ...

• word size

  • 8
  • 16
  • 32
  • 64

• families

  • 8051
  • PIC
  • MSP
  • AVR
    • MCU Quick Reference Guide
    • ATtiny412, ATtiny45
    • ATtiny1614, ATtiny44
    • ATtiny3216, ATmega328
  • ARM
    • D11C, D11D
  • Xtensa
    • ESP8266
    • ESP32
  • PSoC, xCORE, Propeller, Lattice, NVIDIA
  • RISC-V

• Articles

  • Getting Started with the new ATtiny chips
  • Fabricable Arduino boards

• vendors

  • Octopart
  • DigiKey
  • Mouser
  • RS Components
  • Element14
  • SparkFun
  • Adafruit

• packages

  • DIP
  • SOT
  • SOIC
  • TSSOP
  • TQFP
  • LQFP
  • BGA

• in-system development

  • ISP (AVR)
    • software
      • avrdude
    • hardware
      • header pads clip pins
      • Atmel-ICE
      • Arduino
      • ATmega16U2-based ISP/PDI programmer Zaerc
      • FabtinyISP: Brian
  • UPDI (AVR 0,1-series)
    • software

      • pyupdi install: pip3 install intelhex pylint pyserial

        program: python3 pyupdi.py -d your_processor -c your_port -b your_baud_rate -f your_hex -v

      • hardware

        • hello.serial-UPDI.FT230X board components traces interior
        • hello.USB-UPDI.FT230X board components traces interior
        • Arduino nano
  • JTAG (ARM)
    • software
      • [OpenOCD]j(http://openocd.org/)
      • EDBG program: edbg -b -t target_type -pv -f binary_file read fuses: edbg -b -t target_type -F r,*,file_name write fuses: edbg -b -t target_type -F w,high_bit:low_bit,bit_value
    • hardware
      • Atmel-ICE
      • PICO
      • GoodFET
      • Raspberry Pi
      • Free-DAP hello.CMSIS-DAP.10.D11C board components traces interior hello.CMSIS-DAP.4.D11C board components traces interior hello.SWD.10-4 board components traces interior binary video
  • bootloader (all)

• assembly language

  • hex file
  • instruction set, opcodes
  • mnemonics, directives, expressions
  • avr-as
  • inline

• C

  • programming
  • GCC
    • make files
    • bit operations
  • AVR
    • libc modules types math benchmarks
    • avr-libc binutils-avr gcc-avr
    • homebrew-avr
  • ARM
    • gcc-arm-none-eabi gdb-multiarch
    • homebrew-arm
  • Microchip
    • ASF
    • Studio
    • toolchains packs

• IDE

  • Atmel Studio
  • Arduino
  • Eclipse AVR
  • Firefly
  • Scratch
  • Modkit

• boards

  • Atmel
  • Adafruit
  • Sparkfun
  • Polulu
  • MattairTech

• Arduino

  • board + toolchain + libraries + IDE + bootloader + header
  • programming
    • C++
    • Create
    • Codebender
    • Ardublock
  • original
    • Fabkit
    • Fabio
    • satshakit
    • hello.328P
  • cores
    • ATtiny
    • tinyAVR
    • SAMD
    • ESP8266
    • ESP32

• clocks

  • types
    • RC (10%, 1% calibrated)
    • ceramic (0.5%)
    • quartz (50 ppm)
  • PLL
  • Crystal, Resonator, difference

• host communication

  • RS232

    • bit timing

  • VT100/ANSI/ISO/ECMA terminal

    • Minicom
    • Arduino
    • Putty

  • USB

    • software
      • V-USB
    • hardware
      • LUFA ASF Arduino

  • FTDI

    • drivers
    • libFTDI zadig
    • cable
    • chip
      • hello.USB-serial.FT230X board components traces interior
    • CH340G, CH340E drivers

• ATtiny412

  • hello.t412.blink components traces interior
    timing blink.ino video
  • hello.t412.echo components traces interior
    UART echo.ino video
  • Pinout (for Arduino IDE)

• ATtiny45

  • hello.ftdi.45 components traces interior pin re-use
    ports port.c port.make port.ino port.write.ino
    echo.ino echo.serial.ino video
  • Pinout (for Arduino IDE)

• ATtiny1614

  • hello.t1614.echo components traces interior
    echo.ino video
  • Pinout (for Arduino IDE)

• ATtiny44

  • hello.ftdi.44 components traces interior
  • Pinout (for Arduino IDE)

• ATSAMD11C

  • hello.D11C.blink components traces interior
    blink.c blink.make bootloader blink.ino video
  • Pin reference for Arduino IDE

• Interpreters

  • AVRSH
  • BASIC
  • FORTH
  • Espruino
  • MicroPython CircuitPython

• ESP8266

  • ESP-01
    • hello.ESP-01 components traces holes interior
      echo.ino video
  • ESP-WROOM-02D
    • hello.ESP-WROOM-02D components traces holes interior
      echo.ino video Python video

• ESP32

  • ESP32-WROOM-32
    • hello.ESP32-WROOM components traces holes interior
      echo.ino video
      Python video

• Operating Systems

  • FreeRTOS
  • TinyOS
  • Mbed OS
  • ROS

• Systems

  • Rasberry Pi MATE
  • Beagle
  • Micro:bit

• debugging

  • hardware
    • Atmel ICE
    • inspect, reflow solder joints
    • check component orientation, values
    • verify data sheets
    • confirm connector orientation
    • measure supply voltages
    • probe I/O signals
  • software
    • blink LED
    • add print statements
    • use embedded debugger
      • gdb, ddd
      • Atmel Studio

• assignment

  • individual assignment:
    • read a microcontroller data sheet
    • program your board to do something,
    • with as many different programming languages and programming environments as possible

Examples

• Steven
• Adrian
• Yeo GS
• Noel