A small temperature alarm in Toit 2.0

说明与用途

在 Toit 2.0 中实现温度报警的示例，演示如何通过滞后机制避免温度波动导致的频繁状态切换。

问题

Implement a hysteresis-based temperature alarm that avoids rapid state changes when readings hover around threshold values.

结果

The program printed the expected sequence of alarm states, demonstrating correct hysteresis logic without external hardware.

工作流

• 1. Download the v2.0.0 Toit release for your platform and add its bin directory to PATH.
• 2. Verify the runtime with toit --version.
• 3. Create a file sensor.toit containing the alarm logic using local variables and conditional blocks.
• 4. Run toit analyze sensor.toit to check syntax.
• 5. Execute the program with toit run sensor.toit and observe the output.
• 6. Verify hysteresis behavior by comparing output to expected state transitions.

证据

A temperature alarm needs a little memory. Switch it on at 30°C, keep it on while the reading drifts down, and switch it off at 27°C.

来源

Get the archive that matches your platform from the official v2.0.0 release, extract it, and put its bin directory on your PATH.

来源

toit analyze sensor.toit toit run sensor.toit

来源

28 C: false 30 C: true 29 C: true 30 C: true 29 C: true 27 C: false 29 C: false 31 C: true

来源