#pragma once namespace fl { // Low-level Teensy print functions that avoid ALL Arduino dependencies // This uses no-op implementations to prevent "_write" linker issues // Users should initialize their own Serial ports if they need actual output inline void print_null(const char* str) { if (!str) return; // No-op implementation to avoid "_write" linker dependencies // Teensy users should use Serial1.print() directly in their sketch for output // This prevents "undefined reference to _write" errors completely (void)str; // Suppress unused parameter warning } inline void println_null(const char* str) { if (!str) return; // No-op implementation to avoid "_write" linker dependencies // Teensy users should use Serial1.println() directly in their sketch for output (void)str; // Suppress unused parameter warning } // Input functions - no-op implementations for Teensy inline int available_null() { // No-op implementation to avoid Arduino dependencies // Teensy users should use Serial1.available() directly in their sketch for input return 0; } inline int read_null() { // No-op implementation to avoid Arduino dependencies // Teensy users should use Serial1.read() directly in their sketch for input return -1; } } // namespace fl