#pragma once

#include <Arduino.h>

// --- Firmware Version ---
#define FW_VERSION "2026-02-02"
#define FW_HOSTNAME "attenuator"

// --- WiFi Credentials ---
// Override via build_flags or edit directly
#ifndef WIFI_SSID
#define WIFI_SSID "your-ssid"
#endif
#ifndef WIFI_PASS
#define WIFI_PASS "your-password"
#endif

#define WIFI_TIMEOUT_MS 15000

// --- HMC472A Control Pins (active-low) ---
// Optimized mapping: GPIO number = step bit position + 1
// Enables single-instruction bitwise ops instead of loop
//
// Wiring (GPIO → HMC472A pin):
//   GPIO1 → V6 (0.5 dB) = step bit 0 (LSB)
//   GPIO2 → V5 (1 dB)   = step bit 1
//   GPIO3 → V4 (2 dB)   = step bit 2
//   GPIO4 → V3 (4 dB)   = step bit 3
//   GPIO5 → V2 (8 dB)   = step bit 4
//   GPIO6 → V1 (16 dB)  = step bit 5 (MSB)
//
static constexpr uint8_t PIN_V6 = 1;   // 0.5 dB (LSB) - step bit 0
static constexpr uint8_t PIN_V5 = 2;   // 1 dB         - step bit 1
static constexpr uint8_t PIN_V4 = 3;   // 2 dB         - step bit 2
static constexpr uint8_t PIN_V3 = 4;   // 4 dB         - step bit 3
static constexpr uint8_t PIN_V2 = 5;   // 8 dB         - step bit 4
static constexpr uint8_t PIN_V1 = 6;   // 16 dB (MSB)  - step bit 5

// Pin array ordered by attenuation value (V1=16dB first)
static constexpr uint8_t ATTEN_PINS[6] = {PIN_V1, PIN_V2, PIN_V3, PIN_V4, PIN_V5, PIN_V6};
static constexpr float ATTEN_DB[6] = {16.0f, 8.0f, 4.0f, 2.0f, 1.0f, 0.5f};

// Bitmask: 0b01111110 = bits 1-6 in GPIO register
static constexpr uint32_t ATTEN_PIN_MASK = 0x7E;

// --- Status LED ---
static constexpr uint8_t PIN_LED = 15;  // Built-in LED, active HIGH

// --- Attenuator Limits ---
static constexpr float DB_MIN = 0.0f;
static constexpr float DB_MAX = 31.5f;
static constexpr float DB_STEP = 0.5f;
static constexpr uint8_t STEP_MIN = 0;
static constexpr uint8_t STEP_MAX = 63;

// --- Sweep Defaults ---
static constexpr uint32_t SWEEP_DWELL_MS_DEFAULT = 500;
static constexpr uint32_t SWEEP_DWELL_MS_MIN = 10;
static constexpr uint32_t SWEEP_DWELL_MS_MAX = 10000;

// --- NVS ---
#define NVS_NAMESPACE "atten"
#define NVS_KEY_STEP "step"

// --- Watchdog ---
#define WDT_TIMEOUT_S 120

// --- Web Server ---
#define WEB_PORT 80