| 38 | |
| 39 | |
| 40 | void MCP_DAC::begin(uint8_t select) |
| 41 | { |
| 42 | _select = select; |
| 43 | pinMode(_select, OUTPUT); |
| 44 | digitalWrite(_select, HIGH); |
| 45 | |
| 46 | _spi_settings = SPISettings(_SPIspeed, MSBFIRST, SPI_MODE0); |
| 47 | |
| 48 | if (_hwSPI) |
| 49 | { |
| 50 | #if defined(ESP32) |
| 51 | if (_useHSPI) // HSPI |
| 52 | { |
| 53 | mySPI = new SPIClass(HSPI); |
| 54 | mySPI->end(); |
| 55 | mySPI->begin(14, 12, 13, select); // CLK=14 MISO=12 MOSI=13 |
| 56 | } |
| 57 | else // VSPI |
| 58 | { |
| 59 | mySPI = new SPIClass(VSPI); |
| 60 | mySPI->end(); |
| 61 | mySPI->begin(18, 19, 23, select); // CLK=18 MISO=19 MOSI=23 |
| 62 | } |
| 63 | |
| 64 | #else // generic hardware SPI |
| 65 | mySPI->end(); |
| 66 | mySPI->begin(); |
| 67 | #endif |
| 68 | } |
| 69 | else // software SPI |
| 70 | { |
| 71 | pinMode(_dataOut, OUTPUT); |
| 72 | pinMode(_clock, OUTPUT); |
| 73 | digitalWrite(_dataOut, LOW); |
| 74 | digitalWrite(_clock, LOW); |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | |
| 79 | #if defined(ESP32) or defined(ARDUINO_ARCH_RP2040) |