public static async Task Aggregator(
FPGA.InputSignal <bool> RXD,
FPGA.OutputSignal <bool> TXD
)
{
Sequential handler = () =>
{
FPU.FPUScopeNoSync();
while (true)
{
FPGA.Optimizations.AddOptimizer <DefaultOptimizer>();
const uint baud = 115200;
UART.ReadFloat(baud, RXD, out float mass);
UART.ReadFloat(baud, RXD, out float radius);
var vEsc = FPGAOrbitalCalc.VEsc(mass, radius);
UART.WriteFloat(baud, vEsc, TXD);
}
};
FPGA.Config.OnStartup(handler);
}
public void Quokka_VEsc()
{
var rnd = new Random(Environment.TickCount);
using (var port = new QuokkaPort())
{
// escape velocities from the surface of objects
var cases = new[]
{
// sun
new
{
// radius, in meters
R = 695510e+3f,
// mass, in kgs
M = 1.989e+30f,
// VEsc, is m/s
V = 617500f
},
// earth
new
{
R = 6371e+3f,
M = 5.972e+24f,
V = 11186f
},
// mars
new
{
R = 3389.5e+3f,
M = 6.39e+23f,
V = 5030f
},
};
foreach (var testCase in cases)
{
float calculated = FPGAOrbitalCalc.VEsc(testCase.M, testCase.R);
var err = Math.Abs((calculated - testCase.V) / testCase.V);
Assert.IsTrue(err < 0.01);
port.WriteFloat(testCase.M);
port.WriteFloat(testCase.R);
var actualBytes = port.Read(4, true, port.DefaultTimeout);
var actual = TestConverters.FloatFromByteArray(actualBytes);
Assert.AreEqual(calculated, actual, $"Failed for {testCase}");
}
}
}