@brief SPI bus configuration Encapsulates all parameters needed to initialize the SPI bus. Maps directly to ESP-IDF's spi_bus_config_t structure.
| 26 | /// Encapsulates all parameters needed to initialize the SPI bus. |
| 27 | /// Maps directly to ESP-IDF's spi_bus_config_t structure. |
| 28 | struct SpiBusConfig { |
| 29 | int miso_pin; ///< MISO pin (GPIO number, -1 if unused) |
| 30 | int mosi_pin; ///< MOSI pin (GPIO number, -1 for quad mode) |
| 31 | int sclk_pin; ///< SCLK pin (GPIO number) |
| 32 | int data2_pin; ///< Data2/WP pin for quad mode (-1 if unused) |
| 33 | int data3_pin; ///< Data3/HD pin for quad mode (-1 if unused) |
| 34 | int max_transfer_sz; ///< Max transfer size in bytes (0 = default 4094) |
| 35 | u32 flags; ///< Bus flags (e.g., SPICOMMON_BUSFLAG_MASTER) |
| 36 | |
| 37 | /// @brief Default constructor (single-lane mode) |
| 38 | SpiBusConfig() |
| 39 | FL_NOEXCEPT : miso_pin(-1) |
| 40 | , mosi_pin(-1) |
| 41 | , sclk_pin(-1) |
| 42 | , data2_pin(-1) |
| 43 | , data3_pin(-1) |
| 44 | , max_transfer_sz(0) |
| 45 | , flags(0) |
| 46 | {} |
| 47 | |
| 48 | /// @brief Constructor for single-lane mode |
| 49 | /// @param mosi MOSI pin (data output) |
| 50 | /// @param sclk SCLK pin (clock output) |
| 51 | /// @param max_sz Max transfer size (0 = default) |
| 52 | SpiBusConfig(int mosi, int sclk, int max_sz = 0) |
| 53 | FL_NOEXCEPT : miso_pin(-1) |
| 54 | , mosi_pin(mosi) |
| 55 | , sclk_pin(sclk) |
| 56 | , data2_pin(-1) |
| 57 | , data3_pin(-1) |
| 58 | , max_transfer_sz(max_sz) |
| 59 | , flags(0) |
| 60 | {} |
| 61 | |
| 62 | /// @brief Constructor for dual-lane mode |
| 63 | /// @param data0 Data0/MOSI pin |
| 64 | /// @param data1 Data1/MISO pin |
| 65 | /// @param sclk SCLK pin |
| 66 | /// @param max_sz Max transfer size |
| 67 | SpiBusConfig(int data0, int data1, int sclk, int max_sz) |
| 68 | FL_NOEXCEPT : miso_pin(data1) // Data1 uses MISO line |
| 69 | , mosi_pin(data0) // Data0 uses MOSI line |
| 70 | , sclk_pin(sclk) |
| 71 | , data2_pin(-1) |
| 72 | , data3_pin(-1) |
| 73 | , max_transfer_sz(max_sz) |
| 74 | , flags(0) |
| 75 | {} |
| 76 | |
| 77 | /// @brief Constructor for quad-lane mode |
| 78 | /// @param data0 Data0/MOSI pin |
| 79 | /// @param data1 Data1/MISO pin |
| 80 | /// @param data2 Data2/WP pin |
| 81 | /// @param data3 Data3/HD pin |
| 82 | /// @param sclk SCLK pin |
| 83 | /// @param max_sz Max transfer size |
| 84 | SpiBusConfig(int data0, int data1, int data2, int data3, int sclk, int max_sz) |
| 85 | FL_NOEXCEPT : miso_pin(data1) |