embedded-arm

Bare-metal ARM development. Using STM32 microcontrollers with PlatformIO for ease of development.

Reference course - the Quantum Leaps course.

Hardware

Board: STM32 Nucleo-F446RE MCU: STM32F446RET6

Spec	Value
Core	ARM Cortex-M4 + FPU + DSP
Clock	180 MHz (max)
Flash	512 KB
SRAM	128 KB + 4 KB backup
Voltage	1.7V - 3.6V

Peripherals

Type	Count
Timers	17
ADC	3x 12-bit
DAC	2x 12-bit
GPIO	50 pins
USART/UART	6
SPI / I2C	4 / 3
USB	OTG FS + HS
CAN	2
DMA	16 streams

Board Features

Feature	Details
Debugger	ST-LINK/V2-1 (on-board)
User LED	LD2 on PA5
User Button	B1 on PC13 (active low)
Headers	Arduino + ST Morpho
Power	USB or 7-12V external

Memory Map

Region	Address	Size
Flash	0x0800_0000	512 KB
SRAM	0x2000_0000	128 KB
Peripherals	0x4000_0000	—
Cortex-M4	0xE000_0000	—

Docs

• Datasheet — pinout, electrical specs
• Reference Manual (RM0390) — the bible for registers
• Cortex-M4 Programming Manual (PM0214) — NVIC, SysTick, instructions
• Nucleo-64 User Manual (UM1724) — board schematic, jumpers

Structure

embedded-arm/
├── projects/
│   ├── 00-test/
│   │   ├── src/
│   │   │   └── main.c
│   │   └── platformio.ini
│   ├── 01-blinky/
│   └── ...
├── common/
└── docs/

Each project is a standalone PlatformIO project.

Setup

# Install PlatformIO
curl -fsSL -o get-platformio.py https://raw.githubusercontent.com/platformio/platformio-core-installer/master/get-platformio.py
python3 get-platformio.py
echo 'export PATH="$HOME/.platformio/penv/bin:$PATH"' >> ~/.bashrc && source ~/.bashrc

# Build & upload
git clone https://github.com/jmarc101/embedded-ARM.git
pio run -t upload

## Usage

**Build & upload:**
```bash
cd projects/01-blinky
pio run -t upload

Serial monitor:

pio device monitor

Create new project:

cd projects
mkdir 03-new-project && cd 03-new-project
pio project init --board nucleo_f446re --project-option "framework=cmsis"

Projects

#	Name	Description
00	test	Minimal startup code