#pragma once

// --- GPIO Pin Assignments ---
// UART1 to RS-422 module via 3.3V<->5V level shifter
#define PIN_RS422_TX 17  // ESP32 TX -> level shifter -> MAX485₁ DI
#define PIN_RS422_RX 18  // MAX485₂ RO -> level shifter -> ESP32 RX

// GPS UART (UART2) — RYS352A
#define PIN_GPS_RX  5   // ESP32 RX <- GPS TX (NMEA out)
#define PIN_GPS_TX  6   // ESP32 TX -> GPS RX (config in, optional)
#define PIN_GPS_PPS 7   // 1Hz PPS rising edge (interrupt)
#define GPS_BAUD    115200

// I2C Sensor Bus
#define PIN_I2C_SDA 8
#define PIN_I2C_SCL 9
#define I2C_FREQ    400000  // 400kHz

// Sensor I2C addresses
#define MPU9250_ADDR 0x68
#define BMP388_ADDR  0x76

// Onboard RGB LED (WS2812, DevKitC-1 V1.1)
#define PIN_LED 38

// --- RS-422 UART (UART1) ---
#define RS422_BAUD 115200
#define RS422_CONFIG SERIAL_8N1

// --- BLE Configuration ---
#define BLE_DEVICE_NAME "Travler-G2"
#define BLE_MTU 517
// Max payload per NUS notification (must fit in ATT_MTU - 3)
#define BLE_NOTIFY_MAX 240

// Nordic UART Service UUIDs
#define NUS_SERVICE_UUID "6E400001-B5A3-F393-E0A9-E50E24DCCA9E"
#define NUS_RX_UUID      "6E400002-B5A3-F393-E0A9-E50E24DCCA9E"  // Client writes here
#define NUS_TX_UUID      "6E400003-B5A3-F393-E0A9-E50E24DCCA9E"  // ESP32 notifies here

// Sensor Service UUIDs (custom, A0E7xxxx block)
#define SENSOR_SERVICE_UUID   "A0E70001-B5A3-F393-E0A9-E50E24DCCA9E"
#define SENSOR_GPS_UUID       "A0E70002-B5A3-F393-E0A9-E50E24DCCA9E"
#define SENSOR_ORIENT_UUID    "A0E70003-B5A3-F393-E0A9-E50E24DCCA9E"
#define SENSOR_ENV_UUID       "A0E70004-B5A3-F393-E0A9-E50E24DCCA9E"
#define SENSOR_PPS_UUID       "A0E70005-B5A3-F393-E0A9-E50E24DCCA9E"

// --- Timing ---
// Inter-byte coalescing window: collect bytes arriving within this
// gap into one BLE notification instead of sending byte-by-byte
#define COALESCE_MS 3

// LED refresh interval
#define LED_UPDATE_MS 50

// Sensor read/report intervals
#define GPS_REPORT_MS    1000   // 1Hz GPS position reports
#define IMU_REPORT_MS    100    // 10Hz orientation updates
#define BARO_REPORT_MS   1000   // 1Hz pressure/temperature
#define STATUS_PRINT_MS  1000   // 1Hz USB serial status line

// GPS PAIR command init
#define GPS_INIT_DELAY_MS   200   // Wait after UART open before sending commands
#define PAIR_ACK_TIMEOUT_MS 500   // Timeout waiting for $PAIR001 acknowledgment

// --- LED ---
#define LED_BRIGHTNESS 30  // 0-255, keep low to avoid blinding in enclosure
#define LED_COUNT 1

// --- Buffers ---
#define UART_RX_BUF_SIZE 512