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.
39 lines
844 B
C
39 lines
844 B
C
#ifndef LATENCY_H
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#define LATENCY_H
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#include <stdbool.h>
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#include <stdint.h>
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// Measurement result
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typedef struct {
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bool valid; // True if measurement succeeded
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float latency_ms; // Measured latency in milliseconds
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uint64_t latency_us; // Raw latency in microseconds
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} measurement_t;
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// Statistics
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typedef struct {
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float min_ms;
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float max_ms;
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float avg_ms;
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uint32_t count;
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} stats_t;
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// Initialize latency measurement hardware
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void latency_init(void);
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// Perform a single latency measurement
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// Returns result struct with valid flag and latency value
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measurement_t latency_measure(void);
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// Get current statistics
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stats_t latency_get_stats(void);
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// Reset statistics
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void latency_reset_stats(void);
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// Add measurement to statistics
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void latency_add_to_stats(float latency_ms);
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#endif // LATENCY_H
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