AP_HAL: Add Dark Linux board

libraries/AP_HAL/AP_HAL_Boards.h

@@ -34,6 +34,7 @@
 #define HAL_BOARD_SUBTYPE_LINUX_NAVIO2     1013
 #define HAL_BOARD_SUBTYPE_LINUX_DISCO      1014
 #define HAL_BOARD_SUBTYPE_LINUX_AERO       1015
+#define HAL_BOARD_SUBTYPE_LINUX_DARK       1016
 
 /* HAL PX4 sub-types, starting at 2000 */
 #define HAL_BOARD_SUBTYPE_PX4_V1           2000

libraries/AP_HAL/board/linux.h

@@ -284,6 +284,21 @@
 #define HAL_COMPASS_DEFAULT HAL_COMPASS_AERO
 #define HAL_COMPASS_BMM150_I2C_BUS 2
 #define HAL_COMPASS_BMM150_I2C_ADDR 0x12
+#elif CONFIG_HAL_BOARD_SUBTYPE == HAL_BOARD_SUBTYPE_LINUX_DARK
+#define HAL_BOARD_LOG_DIRECTORY "/var/APM/logs"
+#define HAL_BOARD_TERRAIN_DIRECTORY "/var/APM/terrain"
+#define HAL_INS_DEFAULT           HAL_INS_MPU9250_SPI
+#define HAL_INS_MPU9250_NAME "mpu9250"
+#define HAL_COMPASS_DEFAULT HAL_COMPASS_AK8963_MPU9250
+#define HAL_BARO_DEFAULT HAL_BARO_MS5611_I2C
+#define HAL_BARO_MS5611_I2C_BUS 1
+#define HAL_BARO_MS5611_I2C_ADDR 0x77
+#define HAL_BARO_MS5611_USE_TIMER false
+#define HAL_GPIO_A_LED_PIN        24
+#define HAL_GPIO_B_LED_PIN        25
+#define HAL_GPIO_C_LED_PIN        16
+#define HAL_GPIO_LED_ON           LOW
+#define HAL_GPIO_LED_OFF          HIGH
 #else
 #error "no Linux board subtype set"
 #endif