config.h

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#pragma once

 
#include "fl/stl/stdint.h"
#include "fl/stl/vector.h"
#include "fl/stl/span.h"
#include "fl/stl/noexcept.h"
 
namespace fl {
 
// ============================================================================
// SPI Constants
// ============================================================================

constexpr size_t MAX_SPI_LANES = 32;
 
// ============================================================================
// SPI Output Modes
// ============================================================================

enum class spi_output_mode_t : u8 {
    SPI_AUTO = 0,  
    SPI_HW,        
    SPI_BITBANG,   
    SPI_ISR,       
};

enum class SpiParallelMode : u8 {
    AUTO = 0,          
    ISR_ASYNC,         
    BITBANG_BLOCKING   
};
 
// ============================================================================
// SPI Configuration
// ============================================================================

struct SpiConfig {
    SpiConfig() FL_NOEXCEPT = default;

    SpiConfig(int clk, int data, u32 speed_hz = 0xffffffff, spi_output_mode_t output_mode = spi_output_mode_t::SPI_AUTO, u8 spi_mode = 0)
        : clock_pin(clk)
        , clock_speed_hz(speed_hz)
        , output_mode(output_mode)
        , spi_mode(spi_mode) {
        data_pins.push_back(data);
    }

    SpiConfig(int clk, fl::span<const int> pins, u32 speed_hz = 0xffffffff, spi_output_mode_t output_mode = spi_output_mode_t::SPI_AUTO, u8 spi_mode = 0)
        : clock_pin(clk)
        , clock_speed_hz(speed_hz)
        , output_mode(output_mode)
        , spi_mode(spi_mode) {
        // Manually copy pins to data_pins vector
        for (size_t i = 0; i < pins.size(); i++) {
            data_pins.push_back(pins[i]);
        }
    }

    bool isMultiLane() const { return data_pins.size() > 1; }
 
    int clock_pin;                          
    fl::vector<int> data_pins;              
    u32 clock_speed_hz = 0xffffffff;   
    spi_output_mode_t output_mode = spi_output_mode_t::SPI_AUTO; 
    u8 spi_mode = 0;                   
};
 
namespace spi {
 
// Use the top-level SpiConfig as the internal Config
// This avoids duplication and ensures consistency
using Config = fl::SpiConfig;
 
} // namespace spi
} // namespace fl