![](/media/cache/profiles/2012_sf_avc_095.jpg.50x50_q85.jpg)
Code for autonomous rover for Sparkfun AVC. DataBus won 3rd in 2012 and the same code was used on Troubled Child, a 1986 Jeep Grand Wagoneer to win 1st in 2014.
Dependencies: mbed Watchdog SDFileSystem DigoleSerialDisp
Diff: MAVlink/include/common/mavlink_msg_scaled_pressure.h
- Revision:
- 0:a6a169de725f
diff -r 000000000000 -r a6a169de725f MAVlink/include/common/mavlink_msg_scaled_pressure.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/MAVlink/include/common/mavlink_msg_scaled_pressure.h Mon May 27 13:26:03 2013 +0000 @@ -0,0 +1,174 @@ +// MESSAGE SCALED_PRESSURE PACKING + +#define MAVLINK_MSG_ID_SCALED_PRESSURE 38 + +typedef struct __mavlink_scaled_pressure_t +{ + uint64_t usec; ///< Timestamp (microseconds since UNIX epoch or microseconds since system boot) + float press_abs; ///< Absolute pressure (hectopascal) + float press_diff; ///< Differential pressure 1 (hectopascal) + int16_t temperature; ///< Temperature measurement (0.01 degrees celsius) + +} mavlink_scaled_pressure_t; + + + +/** + * @brief Pack a scaled_pressure message + * @param system_id ID of this system + * @param component_id ID of this component (e.g. 200 for IMU) + * @param msg The MAVLink message to compress the data into + * + * @param usec Timestamp (microseconds since UNIX epoch or microseconds since system boot) + * @param press_abs Absolute pressure (hectopascal) + * @param press_diff Differential pressure 1 (hectopascal) + * @param temperature Temperature measurement (0.01 degrees celsius) + * @return length of the message in bytes (excluding serial stream start sign) + */ +static inline uint16_t mavlink_msg_scaled_pressure_pack(uint8_t system_id, uint8_t component_id, mavlink_message_t* msg, uint64_t usec, float press_abs, float press_diff, int16_t temperature) +{ + uint16_t i = 0; + msg->msgid = MAVLINK_MSG_ID_SCALED_PRESSURE; + + i += put_uint64_t_by_index(usec, i, msg->payload); // Timestamp (microseconds since UNIX epoch or microseconds since system boot) + i += put_float_by_index(press_abs, i, msg->payload); // Absolute pressure (hectopascal) + i += put_float_by_index(press_diff, i, msg->payload); // Differential pressure 1 (hectopascal) + i += put_int16_t_by_index(temperature, i, msg->payload); // Temperature measurement (0.01 degrees celsius) + + return mavlink_finalize_message(msg, system_id, component_id, i); +} + +/** + * @brief Pack a scaled_pressure message + * @param system_id ID of this system + * @param component_id ID of this component (e.g. 200 for IMU) + * @param chan The MAVLink channel this message was sent over + * @param msg The MAVLink message to compress the data into + * @param usec Timestamp (microseconds since UNIX epoch or microseconds since system boot) + * @param press_abs Absolute pressure (hectopascal) + * @param press_diff Differential pressure 1 (hectopascal) + * @param temperature Temperature measurement (0.01 degrees celsius) + * @return length of the message in bytes (excluding serial stream start sign) + */ +static inline uint16_t mavlink_msg_scaled_pressure_pack_chan(uint8_t system_id, uint8_t component_id, uint8_t chan, mavlink_message_t* msg, uint64_t usec, float press_abs, float press_diff, int16_t temperature) +{ + uint16_t i = 0; + msg->msgid = MAVLINK_MSG_ID_SCALED_PRESSURE; + + i += put_uint64_t_by_index(usec, i, msg->payload); // Timestamp (microseconds since UNIX epoch or microseconds since system boot) + i += put_float_by_index(press_abs, i, msg->payload); // Absolute pressure (hectopascal) + i += put_float_by_index(press_diff, i, msg->payload); // Differential pressure 1 (hectopascal) + i += put_int16_t_by_index(temperature, i, msg->payload); // Temperature measurement (0.01 degrees celsius) + + return mavlink_finalize_message_chan(msg, system_id, component_id, chan, i); +} + +/** + * @brief Encode a scaled_pressure struct into a message + * + * @param system_id ID of this system + * @param component_id ID of this component (e.g. 200 for IMU) + * @param msg The MAVLink message to compress the data into + * @param scaled_pressure C-struct to read the message contents from + */ +static inline uint16_t mavlink_msg_scaled_pressure_encode(uint8_t system_id, uint8_t component_id, mavlink_message_t* msg, const mavlink_scaled_pressure_t* scaled_pressure) +{ + return mavlink_msg_scaled_pressure_pack(system_id, component_id, msg, scaled_pressure->usec, scaled_pressure->press_abs, scaled_pressure->press_diff, scaled_pressure->temperature); +} + +/** + * @brief Send a scaled_pressure message + * @param chan MAVLink channel to send the message + * + * @param usec Timestamp (microseconds since UNIX epoch or microseconds since system boot) + * @param press_abs Absolute pressure (hectopascal) + * @param press_diff Differential pressure 1 (hectopascal) + * @param temperature Temperature measurement (0.01 degrees celsius) + */ +#ifdef MAVLINK_USE_CONVENIENCE_FUNCTIONS + +static inline void mavlink_msg_scaled_pressure_send(mavlink_channel_t chan, uint64_t usec, float press_abs, float press_diff, int16_t temperature) +{ + mavlink_message_t msg; + mavlink_msg_scaled_pressure_pack_chan(mavlink_system.sysid, mavlink_system.compid, chan, &msg, usec, press_abs, press_diff, temperature); + mavlink_send_uart(chan, &msg); +} + +#endif +// MESSAGE SCALED_PRESSURE UNPACKING + +/** + * @brief Get field usec from scaled_pressure message + * + * @return Timestamp (microseconds since UNIX epoch or microseconds since system boot) + */ +static inline uint64_t mavlink_msg_scaled_pressure_get_usec(const mavlink_message_t* msg) +{ + generic_64bit r; + r.b[7] = (msg->payload)[0]; + r.b[6] = (msg->payload)[1]; + r.b[5] = (msg->payload)[2]; + r.b[4] = (msg->payload)[3]; + r.b[3] = (msg->payload)[4]; + r.b[2] = (msg->payload)[5]; + r.b[1] = (msg->payload)[6]; + r.b[0] = (msg->payload)[7]; + return (uint64_t)r.ll; +} + +/** + * @brief Get field press_abs from scaled_pressure message + * + * @return Absolute pressure (hectopascal) + */ +static inline float mavlink_msg_scaled_pressure_get_press_abs(const mavlink_message_t* msg) +{ + generic_32bit r; + r.b[3] = (msg->payload+sizeof(uint64_t))[0]; + r.b[2] = (msg->payload+sizeof(uint64_t))[1]; + r.b[1] = (msg->payload+sizeof(uint64_t))[2]; + r.b[0] = (msg->payload+sizeof(uint64_t))[3]; + return (float)r.f; +} + +/** + * @brief Get field press_diff from scaled_pressure message + * + * @return Differential pressure 1 (hectopascal) + */ +static inline float mavlink_msg_scaled_pressure_get_press_diff(const mavlink_message_t* msg) +{ + generic_32bit r; + r.b[3] = (msg->payload+sizeof(uint64_t)+sizeof(float))[0]; + r.b[2] = (msg->payload+sizeof(uint64_t)+sizeof(float))[1]; + r.b[1] = (msg->payload+sizeof(uint64_t)+sizeof(float))[2]; + r.b[0] = (msg->payload+sizeof(uint64_t)+sizeof(float))[3]; + return (float)r.f; +} + +/** + * @brief Get field temperature from scaled_pressure message + * + * @return Temperature measurement (0.01 degrees celsius) + */ +static inline int16_t mavlink_msg_scaled_pressure_get_temperature(const mavlink_message_t* msg) +{ + generic_16bit r; + r.b[1] = (msg->payload+sizeof(uint64_t)+sizeof(float)+sizeof(float))[0]; + r.b[0] = (msg->payload+sizeof(uint64_t)+sizeof(float)+sizeof(float))[1]; + return (int16_t)r.s; +} + +/** + * @brief Decode a scaled_pressure message into a struct + * + * @param msg The message to decode + * @param scaled_pressure C-struct to decode the message contents into + */ +static inline void mavlink_msg_scaled_pressure_decode(const mavlink_message_t* msg, mavlink_scaled_pressure_t* scaled_pressure) +{ + scaled_pressure->usec = mavlink_msg_scaled_pressure_get_usec(msg); + scaled_pressure->press_abs = mavlink_msg_scaled_pressure_get_press_abs(msg); + scaled_pressure->press_diff = mavlink_msg_scaled_pressure_get_press_diff(msg); + scaled_pressure->temperature = mavlink_msg_scaled_pressure_get_temperature(msg); +}