Returns the address of the specified byte in the buffer (you can check part of the buffer by specifying a start-of-length limit in "first"). If the byte is repeated in the buffer, outputs the first of the addresses. If the specified byte is not in the buffer, outputs -1.
byte-address-first
@/byte-address-first
Returns the address of the specified byte in the buffer (you can check part of the buffer by specifying a start-of-length limit in "first"). If the byte is repeated in the buffer, outputs the first of the addresses. If the specified byte is not in the buffer, outputs -1.
buffer1nazarijtipusak080/buffer1/buffer1
valuebyte
lennumber
firstnumber
triggerpulse
ERRpulse
donepulse
inumber
To use the node in your project you should have the nazarijtipusak080/buffer1-byte-address library installed. Use the “File → Add Library” menu item in XOD IDE if you don’t have it yet. See Using libraries for more info.
C++ implementation
struct State {
// не використовується
};
{{ GENERATED_CODE }}
void evaluate(Context ctx) {
if (!isInputDirty<input_trigger>(ctx)) return;
if (isInputDirty<input_trigger>(ctx)) emitValue<output_i>(ctx,(-1));
// Отримуємо об'єкт буфера
auto _object = getValue<input_buffer1>(ctx); // буфер
uint16_t len = static_cast<uint16_t>(getValue<input_len>(ctx));
uint16_t first = static_cast<uint16_t>(getValue<input_first>(ctx));
char value = getValue<input_value>(ctx); // char
// Перевірка, чи існує буфер і чи є правильна довжина
if (!_object->buffer || len > _object->len) {
emitValue<output_ERR>(ctx, 1); // видаємо помилку
return;
}
// Зсув байтів вліво
for (int16_t i = first; i < len; i++) {
if ( _object->buffer[i] == value){
emitValue<output_i>(ctx, i) ;
break;}
}
// Виводимо успіх
emitValue<output_done>(ctx, 1);
}