#moonbit-mcu-hal

#Features

• GPIO, UART, SPI, I²C, PWM, ADC, timers, RTC, DMA, locks, RTOS scheduling, and device-tree parsing.
• STM32F4, RP2040 Pico, and ESP32 peripheral adapters.
• Virtual MMIO, GPIO, EEPROM, SPI flash, and bus components for zero-hardware testing.
• CRC-8, CRC-16/MODBUS, COBS, framed packets, varuints, retry policies, and stream assembly.
• Bounded queues, priority queues, bitmaps, statistics, fixed-point PID control, debouncing, and rate limiting.
• Sensor calibration/filtering, environmental measurements, monochrome framebuffers, clipped drawing, numeric glyphs, and battery icons.
• Persistent journals, wear-leveling accounting, power budgets, health counters, trace buffers, watchdogs, boot validation, and rollback selection.
• Board resources, endpoint routing, USB control transfers, flash semantics, access capabilities, token buckets, date/time validation, and endian-safe utilities.

#Package map

#Quick start

moon version
moon check --deny-warn
moon test --deny-warn
moon run src/main

#Example

let clock = @clock_delay.HalClock::default_clock()
let delay = @clock_delay.HalDelay::new(clock)
delay.delay_ms(10)
let pin = @types.PinSpec::default_pin(@types.PortId::PortA, 5)
let gpio = @gpio.GpioPin::new(@gpio.GpioConfig::default_output(pin))
let _ = gpio.set_high()
let eeprom = @sim.At24c02Eeprom::attach(
  @i2c.I2cMaster::new(@i2c.I2cConfig::default_config()),
  @i2c.I2cAddress::Addr7Bit(0x50),
)
let _ = eeprom.write_byte(0x10, (0x77 : Byte))
let value = eeprom.read_byte(0x10).unwrap()
println(value.to_int().to_string())

#Verification

moon fmt --check
moon check --deny-warn
moon info
git diff --exit-code
moon test --deny-warn
moon test --target native --deny-warn
moon test --enable-coverage --deny-warn
moon coverage report -f summary
moon coverage analyze

#Benchmark

moon run src/bench

iterations=1000 payload_bytes=256
crc16_elapsed_us=0 checksum=0
cobs_elapsed_us=0 encoded_bytes=257000
queue_elapsed_us=0 remaining=0

#Source scale

$source = Get-ChildItem -Recurse src -Filter *.mbt |
  Where-Object { $_.Name -notlike '*_test.mbt' }
$source | Get-Content | Measure-Object -Line

#Publishing

moon publish

#License