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When BDS60 receives IRS ROCD as all 1's conver them to 0 as either al… #47

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Oct 9, 2022
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When BDS60 receives IRS ROCD as all 1's conver them to 0 as either al… #47

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When BDS60 receives IRS ROCD as all 1's conver them to 0 as either al… 
…l 0 or all 1 = 0fpm
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@Douglasdc3
Douglasdc3 committed Oct 9, 2022
commit 64df1abeac6d364d24c4c60b26dd13033f8a94db
2 changes: 1 addition & 1 deletion src/main/java/aero/t2s/modes/decoder/df/bds/Bds60.java
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Original file line number Diff line number Diff line change
Expand Up @@ -93,7 +93,7 @@ public Bds60(short[] data) {
}

double irsSign = ((data[9] >> 1) & 0x1) == 1 ? -512.0 : 0.0;
irsRocd = (((data[9] & 0x1) << 8 | data[10]) + irsSign) * ROCD_ACCURCY;
irsRocd = ((((data[9] & 0x1) << 8 | data[10]) + irsSign) * ROCD_ACCURCY) % 16384;
if (statusIrsRocd) {
if (irsRocd < -8000 || irsRocd > 6000) {
invalidate();
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25 changes: 25 additions & 0 deletions src/test/java/aero/t2s/modes/decoder/df/DfRealMessageTest.java
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Expand Up @@ -91,6 +91,31 @@ public void test_df20_bds60_800736() throws UnknownDownlinkFormatException {
assertEquals(101.7, bds.getMagneticHeading(), 0.1);
}

@Test
public void test_df21_bds60_4CA708() throws UnknownDownlinkFormatException {
DownlinkFormat df = testMessage("A8800337D439E730BFE600C28696");

assertInstanceOf(DF21.class, df);
DF21 df21 = (DF21) df;
assertEquals("4CA708", df.getIcao());
assertEquals(2547, df21.getModeA());

assertTrue(df21.isValid());
assertInstanceOf(Bds60.class, df21.getBds());

Bds60 bds = (Bds60) df21.getBds();
assertTrue(bds.isStatusIrsRocd());
assertEquals(0, bds.getIrsRocd(), 0.1);
assertTrue(bds.isStatusBaroRocd());
assertEquals(-128, bds.getBaroRocd(), 0.1);
assertTrue(bds.isStatusIas());
assertEquals(243, bds.getIas());
assertTrue(bds.isStatusMach());
assertEquals(0.77, bds.getMach(), 0.1);
assertTrue(bds.isStatusMagneticHeading());
assertEquals(236.7, bds.getMagneticHeading(), 0.1);
}

private DownlinkFormat testMessage(String message) throws UnknownDownlinkFormatException {
Decoder decoder = new Decoder(new HashMap<>(), 50, 2, ModeSDatabase.createDatabase());

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