7-segment-convertor-cpp
dancojocaru2000/7-segment/7-segment-convertor-cpp
7-segment-convertor-cpp
@/7-segment-convertor-cpp
VALstring
Value (digit and optional dot to turn on decimal separator). Examples are "2" and "4."
UPDpulse
Updates the value.
CCboolean
True if the 7-segment display is Common Cathode (the middle pins are connected to ground)
ERRpulse
Pulsed if the input value is invalid.
OKpulse
Pulsed after a successful update.
RESbyte
C++ implementation
struct State {
};
{{ GENERATED_CODE }}
const int digits[] = {0b1111110, 0b0011000, 0b1101101, 0b0111101, 0b0011011, 0b0110111, 0b1110111, 0b0011100, 0b1111111, 0b01111111};
void evaluate(Context ctx) {
if (!isInputDirty<input_UPD>(ctx)) return;
auto value = getValue<input_VAL>(ctx);
auto common_gnd = getValue<input_CC>(ctx);
int digit;
auto iter = value.iterate();
char c = *iter;
if (!('0' <= c && c <= '9')) {
emitValue<output_ERR>(ctx, true);
return;
}
digit = c - '0';
++iter;
bool dot;
if (iter && *iter == '.') {
dot = true;
}
else dot = false;
auto bits = digits[digit];
if (dot) {
bits |= (1 << 7);
}
else {
bits = ~(~bits | (1 << 7));
}
if (!common_gnd) bits = ~bits;
emitValue<output_RES>(ctx, bits);
// emitValue<output_DOT>(ctx, bits & (1 << 7));
// emitValue<output_A>(ctx, bits & (1 << 6));
// emitValue<output_B>(ctx, bits & (1 << 5));
// emitValue<output_C>(ctx, bits & (1 << 4));
// emitValue<output_D>(ctx, bits & (1 << 3));
// emitValue<output_E>(ctx, bits & (1 << 2));
// emitValue<output_F>(ctx, bits & (1 << 1));
// emitValue<output_G>(ctx, bits & (1 << 0));
emitValue<output_OK>(ctx, true);
}