991b9a8ee9
Build and upload tool (arduino-build.sh): - Compile, upload, and monitor via arduino-cli - Device discovery with USB ID identification (--devices) - Persistent reconnecting serial monitor (--watch) - Split compile/upload workflow (--verify, --upload-only) - First-time setup wizard (--setup) - Comprehensive --help with troubleshooting and RedBoard specs Testable application architecture: - Hardware abstraction layer (lib/hal/) decouples logic from Arduino API - Google Mock HAL for unit tests (exact call verification) - Simulated HAL for system tests (GPIO state, virtual clock, I2C devices) - Example I2C temperature sensor simulator (TMP102) - Host-side test suite via CMake + Google Test (21 tests) Example sketch: - blink/ -- LED blink with button-controlled speed, wired through HAL
89 lines
2.6 KiB
C++
89 lines
2.6 KiB
C++
#ifndef BLINK_APP_H
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#define BLINK_APP_H
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#include <hal.h>
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/*
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* BlinkApp -- Testable blink logic, decoupled from hardware.
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*
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* Blinks an LED and reads a button. When the button is pressed,
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* the blink rate doubles (toggles between normal and fast mode).
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*
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* All hardware access goes through the injected Hal pointer. This
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* class has no dependency on Arduino.h and compiles on any host.
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*/
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class BlinkApp {
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public:
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static constexpr uint8_t DEFAULT_LED_PIN = LED_BUILTIN; // pin 13
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static constexpr uint8_t DEFAULT_BUTTON_PIN = 2;
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static constexpr unsigned long SLOW_INTERVAL_MS = 500;
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static constexpr unsigned long FAST_INTERVAL_MS = 125;
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BlinkApp(Hal* hal,
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uint8_t led_pin = DEFAULT_LED_PIN,
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uint8_t button_pin = DEFAULT_BUTTON_PIN)
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: hal_(hal)
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, led_pin_(led_pin)
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, button_pin_(button_pin)
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, led_state_(LOW)
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, fast_mode_(false)
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, last_toggle_ms_(0)
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, last_button_state_(HIGH) // pulled up, so HIGH = not pressed
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{}
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// Call once from setup()
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void begin() {
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hal_->pinMode(led_pin_, OUTPUT);
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hal_->pinMode(button_pin_, INPUT_PULLUP);
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hal_->serialBegin(115200);
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hal_->serialPrintln("BlinkApp started");
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last_toggle_ms_ = hal_->millis();
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}
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// Call repeatedly from loop()
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void update() {
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handleButton();
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handleBlink();
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}
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// -- Accessors for testing ----------------------------------------------
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bool ledState() const { return led_state_ == HIGH; }
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bool fastMode() const { return fast_mode_; }
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unsigned long interval() const {
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return fast_mode_ ? FAST_INTERVAL_MS : SLOW_INTERVAL_MS;
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}
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private:
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void handleButton() {
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uint8_t reading = hal_->digitalRead(button_pin_);
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// Detect falling edge (HIGH -> LOW = button press with INPUT_PULLUP)
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if (last_button_state_ == HIGH && reading == LOW) {
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fast_mode_ = !fast_mode_;
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hal_->serialPrintln(fast_mode_ ? "FAST" : "SLOW");
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}
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last_button_state_ = reading;
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}
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void handleBlink() {
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unsigned long now = hal_->millis();
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unsigned long target = fast_mode_ ? FAST_INTERVAL_MS : SLOW_INTERVAL_MS;
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if (now - last_toggle_ms_ >= target) {
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led_state_ = (led_state_ == HIGH) ? LOW : HIGH;
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hal_->digitalWrite(led_pin_, led_state_);
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last_toggle_ms_ = now;
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}
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}
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Hal* hal_;
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uint8_t led_pin_;
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uint8_t button_pin_;
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uint8_t led_state_;
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bool fast_mode_;
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unsigned long last_toggle_ms_;
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uint8_t last_button_state_;
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};
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#endif // BLINK_APP_H
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