florian.berthold
64f9e34fc3
Complete working firmware including: - CMakeLists.txt for Pico SDK build - SSD1306 OLED driver (128x32, I2C) - High-resolution latency measurement using hardware timer - Debounced button with short/long press detection - Three modes: Single, Continuous, Stats - USB serial debugging output Includes 8x8 font with numbers and letters for display.
33 lines
943 B
C
33 lines
943 B
C
#ifndef CONFIG_H
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#define CONFIG_H
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// GPIO Pin Assignments (RP2040-Zero)
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#define PIN_I2C_SDA 0 // OLED SDA
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#define PIN_I2C_SCL 1 // OLED SCL
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#define PIN_TRIG_OUT 2 // Trigger output
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#define PIN_RETURN_IN 3 // Return input
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#define PIN_BUTTON 4 // Mode button
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// I2C Configuration
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#define I2C_PORT i2c0
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#define I2C_FREQ 400000 // 400 kHz
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// OLED Display (SSD1306 128x32)
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#define OLED_ADDR 0x3C
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#define OLED_WIDTH 128
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#define OLED_HEIGHT 32
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// Timing Configuration
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#define TRIGGER_PULSE_MS 5 // Trigger pulse width
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#define MEASURE_TIMEOUT_MS 1000 // Max latency measurement
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#define DEBOUNCE_MS 50 // Button debounce
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#define CONTINUOUS_INTERVAL_MS 500 // Interval for continuous mode
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// Display
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#define DISPLAY_UPDATE_MS 100 // Display refresh rate
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// Statistics
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#define STATS_SAMPLES 10 // Rolling average sample count
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#endif // CONFIG_H
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