Module hal

Expand description

Minimal hardware abstraction for IoT hosts.

Host firmware implements these traits and registers matching FFI callbacks. The simulated implementation below is used for desktop demos and tests.

Structs§

SimulatedHal: Desktop/simulator HAL: 32 virtual GPIO pins + a tick counter for delay. PWM duty/freq tables, UART loopback buffers, and I2C/SPI echo devices.

builtin_adc_read: adc_read(channel) 鈫?int raw
builtin_delay_ms: delay_ms(ms) 鈥?simulated; advances the HAL clock only.
builtin_gpio_read: gpio_read(pin) 鈫?bool
builtin_gpio_write: gpio_write(pin, high) 鈥?pin: int, high: bool
builtin_i2c_xfer: i2c_xfer(addr, hexdata, rlen) 鈫?hex string of rlen response bytes.
builtin_pwm_freq: pwm_freq(pin, hz)
builtin_pwm_write: pwm_write(pin, duty) 鈥?duty is 16-bit (0..=65535).
builtin_spi_xfer: spi_xfer(addr, hexdata, rxlen) 鈫?hex string of rxlen response bytes.
builtin_uart_read: uart_read(port, n) 鈫?string of up to n bytes (UTF-8 lossy).
builtin_uart_write: uart_write(port, s) 鈥?writes UTF-8 bytes of s (looped back in sim).
sim_drive_pin: Test/demo helper: force an external pin level.
sim_elapsed_ms: Test/demo helper: read simulated elapsed ms.
sim_i2c_last_write: Test/demo helper: last I2C write payload for addr.
sim_pwm_duty: Test/demo helper: PWM duty currently programmed on pin.
sim_pwm_freq: Test/demo helper: PWM frequency currently programmed on pin.
sim_set_adc: Test/demo helper: inject a simulated ADC reading.