mirror of https://github.com/EspoTek/Labrador.git
27 lines
461 B
Matlab
27 lines
461 B
Matlab
function [expected] = dofrontend(vin, channel)
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vcc = 3.3;
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TOP = 128;
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r4 = 75e3;
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r3 = 1e6;
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r2 = 1e3;
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r1 = 1e3;
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global scope_gain_0
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global scope_gain_1
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global CH1_AC
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global CH2_AC
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if channel == 1
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scope_gain = scope_gain_1;
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AC_offset = CH2_AC * 1.65;
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else
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scope_gain = scope_gain_0;
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AC_offset = CH1_AC * 1.65;
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end
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vn = vcc * (r2/(r1+r2));
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vx = vn + (vin - vn) * (r4 / (r3+r4));
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vref = vcc/2;
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expected = int8((vx - vn)/vref * scope_gain * TOP); |