| 24 | |
| 25 | |
| 26 | size_t ShiftOutSlow::write(const uint8_t data) |
| 27 | { |
| 28 | uint8_t val = data; |
| 29 | uint16_t d1 = _delay/2; |
| 30 | uint16_t d2 = _delay - d1; |
| 31 | for (uint8_t i = 0; i < 8; ++i) |
| 32 | { |
| 33 | if (d1) delayMicroseconds(d1); |
| 34 | if (_bitOrder == LSBFIRST) { |
| 35 | digitalWrite(_dataPin, val & 0x01); |
| 36 | val >>= 1; |
| 37 | } else { |
| 38 | digitalWrite(_dataPin, (val & 0x80) != 0); |
| 39 | val <<= 1; |
| 40 | } |
| 41 | digitalWrite(_clockPin, HIGH); |
| 42 | if (d2) delayMicroseconds(d2); |
| 43 | yield(); |
| 44 | digitalWrite(_clockPin, LOW); |
| 45 | } |
| 46 | _value = data; |
| 47 | return 1; |
| 48 | } |
| 49 | |
| 50 | |
| 51 | size_t ShiftOutSlow::write(const uint8_t *buffer, size_t size) |