ublox 0.10.0

A crate to communicate with u-blox GPS devices using the UBX protocol
Documentation 
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use chrono::prelude::*;

use crate::{
    ubx_checksum, MemWriter, MemWriterError, PositionLLA, UbxPacketCreator, UbxPacketMeta,
};
use ublox_derive::ubx_packet_send;

/// Supported on:  u-blox 8 / u-blox M8 protocol versions 15, 15.01, 16, 17, 18, 19, 19.1, 19.2, 20, 20.01, 20.1, 20.2, 20.3, 22, 22.01, 23 and 23.01
/// All UBX-AID messages are deprecated in newer protocol versions; use UBX-MGA messages instead
#[ubx_packet_send]
#[ubx(
    class = 0x0B,
    id = 0x01,
    fixed_payload_len = 48,
    flags = "default_for_builder"
)]
struct AidIni {
    ecef_x_or_lat: i32,
    ecef_y_or_lon: i32,
    ecef_z_or_alt: i32,
    pos_accuracy: u32,
    time_cfg: u16,
    week_or_ym: u16,
    tow_or_hms: u32,
    tow_ns: i32,
    tm_accuracy_ms: u32,
    tm_accuracy_ns: u32,
    clk_drift_or_freq: i32,
    clk_drift_or_freq_accuracy: u32,
    flags: u32,
}

impl AidIniBuilder {
    pub fn set_position(mut self, pos: PositionLLA) -> Self {
        self.ecef_x_or_lat = (pos.lat * 10_000_000.0) as i32;
        self.ecef_y_or_lon = (pos.lon * 10_000_000.0) as i32;
        self.ecef_z_or_alt = (pos.alt * 100.0) as i32; // Height is in centimeters, here
        self.flags |= (1 << 0) | (1 << 5);
        self
    }

    pub fn set_time(mut self, tm: DateTime<Utc>) -> Self {
        self.week_or_ym = (match tm.year_ce() {
            (true, yr) => yr - 2000,
            (false, _) => {
                panic!("AID-INI packet only supports years after 2000");
            },
        } * 100
            + tm.month0()) as u16;
        self.tow_or_hms = tm.hour() * 10000 + tm.minute() * 100 + tm.second();
        self.tow_ns = tm.nanosecond() as i32;
        self.flags |= (1 << 1) | (1 << 10);
        self
    }
}