StmTypes.h

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#pragma once
 
#include "HardwareTypes.h"
#include <cstdint>
#include <cstddef>
 
// ═══════════════════════════════════════════════════════════════════════════════
// STM32 HAL FORWARD DECLARATIONS
// ═══════════════════════════════════════════════════════════════════════════════
// These forward-declare STM32 HAL handle types so that StmTypes.h can be
// included WITHOUT pulling in the full stm32xxxx_hal.h.  The actual definitions
// are provided by the user's CubeMX-generated HAL includes.
// ─────────────────────────────────────────────────────────────────────────────
 
struct ADC_HandleTypeDef;
struct I2C_HandleTypeDef;
struct SPI_HandleTypeDef;
struct TIM_HandleTypeDef;
struct UART_HandleTypeDef;
struct CAN_HandleTypeDef;       // CAN1/CAN2 (STM32F1/F2/F4)
struct FDCAN_HandleTypeDef;     // FDCAN (STM32G4/H7/U5)
struct DAC_HandleTypeDef;
struct DMA_HandleTypeDef;
struct GPIO_TypeDef;            // GPIOA, GPIOB, etc.
 
// Flash/NVS-related — STM32 doesn't have a handle, just addresses
// We wrap flash sector operations internally.
 
// ═══════════════════════════════════════════════════════════════════════════════
// STM32 PLATFORM CONSTANTS
// ═══════════════════════════════════════════════════════════════════════════════
 
namespace hf::stm32 {
 
static constexpr hf_u8_t kMaxGpioPorts = 11;
 
static constexpr hf_u8_t kPinsPerPort = 16;
 
static constexpr hf_u16_t kMaxGpioPins = kMaxGpioPorts * kPinsPerPort;
 
static constexpr hf_u8_t kAdcMaxChannels = 20;
 
static constexpr hf_u8_t kAdcMaxResolutionBits = 16;  // STM32H7
static constexpr hf_u8_t kAdcDefaultResolutionBits = 12;
 
static constexpr float kAdcDefaultVrefV = 3.3f;
 
static constexpr hf_u32_t kI2cMaxFreqHz = 1000000;    // Fast-mode Plus
static constexpr hf_u32_t kI2cStandardFreqHz = 100000;
static constexpr hf_u32_t kI2cFastFreqHz = 400000;
static constexpr hf_u32_t kI2cFastPlusFreqHz = 1000000;
static constexpr hf_u16_t kI2cMaxTransferBytes = 65535;
 
static constexpr hf_u32_t kSpiMaxFreqHz = 50000000;   // Depends on family
static constexpr hf_u32_t kSpiDefaultFreqHz = 1000000;
static constexpr hf_u16_t kSpiMaxTransferBytes = 65535;
 
static constexpr hf_u32_t kUartMaxBaudRate = 10000000;  // STM32H7 LPUART
static constexpr hf_u32_t kUartDefaultBaudRate = 115200;
static constexpr hf_u16_t kUartDefaultBufferSize = 256;
 
static constexpr hf_u64_t kTimerMinPeriodUs = 1;
static constexpr hf_u64_t kTimerMaxPeriodUs = 4294967295ULL; // 32-bit counter @ 1 MHz
static constexpr hf_u64_t kTimerResolutionUs = 1;
 
static constexpr hf_u32_t kPwmMaxFreqHz = 1000000;
static constexpr hf_u32_t kPwmMinFreqHz = 1;
static constexpr hf_u16_t kPwmMaxResolution = 65535; // 16-bit timer
static constexpr hf_u8_t kPwmMaxChannelsPerTimer = 4;
 
static constexpr hf_u32_t kCanMaxBaudRate = 1000000;
static constexpr hf_u32_t kCanFdMaxBaudRate = 8000000;
static constexpr hf_u16_t kCanDefaultQueueSize = 16;
 
static constexpr size_t kNvsMaxKeyLength = 64;
static constexpr size_t kNvsMaxValueSize = 4096;
static constexpr size_t kNvsDefaultSectorSize = 4096; // Typical flash sector
 
static constexpr float kTempSensorMinC = -40.0f;
static constexpr float kTempSensorMaxC = 125.0f;
static constexpr float kTempSensorTypAccuracyC = 1.5f;
 
static constexpr hf_u32_t kLoggerMaxMessageLen = 256;
static constexpr hf_u32_t kLoggerDefaultBufferSize = 1024;
 
}  // namespace hf::stm32
 
// ═══════════════════════════════════════════════════════════════════════════════
// STM32 GPIO PORT/PIN ENCODING
// ═══════════════════════════════════════════════════════════════════════════════
// STM32 GPIO is addressed as (Port, Pin) — e.g., PA5 = Port A, Pin 5.
// We encode this into hf_pin_num_t as: pin_num = (port_index * 16) + pin_index
// where port_index: A=0, B=1, C=2, ..., K=10.
// This allows a single hf_pin_num_t to uniquely identify any STM32 GPIO pin.
// ─────────────────────────────────────────────────────────────────────────────
 
namespace hf::stm32 {
 
enum class GpioPort : hf_u8_t {
    A = 0, B = 1, C = 2, D = 3, E = 4,
    F = 5, G = 6, H = 7, I = 8, J = 9, K = 10
};
 
constexpr hf_pin_num_t EncodePin(GpioPort port, hf_u8_t pin) noexcept {
    return static_cast<hf_pin_num_t>(static_cast<hf_u8_t>(port) * kPinsPerPort + pin);
}
 
constexpr hf_u8_t DecodePinPort(hf_pin_num_t pin) noexcept {
    return static_cast<hf_u8_t>(pin / kPinsPerPort);
}
 
constexpr hf_u8_t DecodePinIndex(hf_pin_num_t pin) noexcept {
    return static_cast<hf_u8_t>(pin % kPinsPerPort);
}
 
constexpr hf_u16_t DecodePinMask(hf_pin_num_t pin) noexcept {
    return static_cast<hf_u16_t>(1U << DecodePinIndex(pin));
}
 
namespace pin {
    constexpr hf_pin_num_t PA0  = EncodePin(GpioPort::A, 0);
    constexpr hf_pin_num_t PA1  = EncodePin(GpioPort::A, 1);
    constexpr hf_pin_num_t PA2  = EncodePin(GpioPort::A, 2);
    constexpr hf_pin_num_t PA3  = EncodePin(GpioPort::A, 3);
    constexpr hf_pin_num_t PA4  = EncodePin(GpioPort::A, 4);
    constexpr hf_pin_num_t PA5  = EncodePin(GpioPort::A, 5);
    constexpr hf_pin_num_t PA6  = EncodePin(GpioPort::A, 6);
    constexpr hf_pin_num_t PA7  = EncodePin(GpioPort::A, 7);
    constexpr hf_pin_num_t PA8  = EncodePin(GpioPort::A, 8);
    constexpr hf_pin_num_t PA9  = EncodePin(GpioPort::A, 9);
    constexpr hf_pin_num_t PA10 = EncodePin(GpioPort::A, 10);
    constexpr hf_pin_num_t PA11 = EncodePin(GpioPort::A, 11);
    constexpr hf_pin_num_t PA12 = EncodePin(GpioPort::A, 12);
    constexpr hf_pin_num_t PA13 = EncodePin(GpioPort::A, 13);
    constexpr hf_pin_num_t PA14 = EncodePin(GpioPort::A, 14);
    constexpr hf_pin_num_t PA15 = EncodePin(GpioPort::A, 15);
 
    constexpr hf_pin_num_t PB0  = EncodePin(GpioPort::B, 0);
    constexpr hf_pin_num_t PB1  = EncodePin(GpioPort::B, 1);
    constexpr hf_pin_num_t PB2  = EncodePin(GpioPort::B, 2);
    constexpr hf_pin_num_t PB3  = EncodePin(GpioPort::B, 3);
    constexpr hf_pin_num_t PB4  = EncodePin(GpioPort::B, 4);
    constexpr hf_pin_num_t PB5  = EncodePin(GpioPort::B, 5);
    constexpr hf_pin_num_t PB6  = EncodePin(GpioPort::B, 6);
    constexpr hf_pin_num_t PB7  = EncodePin(GpioPort::B, 7);
    constexpr hf_pin_num_t PB8  = EncodePin(GpioPort::B, 8);
    constexpr hf_pin_num_t PB9  = EncodePin(GpioPort::B, 9);
    constexpr hf_pin_num_t PB10 = EncodePin(GpioPort::B, 10);
    constexpr hf_pin_num_t PB11 = EncodePin(GpioPort::B, 11);
    constexpr hf_pin_num_t PB12 = EncodePin(GpioPort::B, 12);
    constexpr hf_pin_num_t PB13 = EncodePin(GpioPort::B, 13);
    constexpr hf_pin_num_t PB14 = EncodePin(GpioPort::B, 14);
    constexpr hf_pin_num_t PB15 = EncodePin(GpioPort::B, 15);
 
    constexpr hf_pin_num_t PC0  = EncodePin(GpioPort::C, 0);
    constexpr hf_pin_num_t PC1  = EncodePin(GpioPort::C, 1);
    constexpr hf_pin_num_t PC2  = EncodePin(GpioPort::C, 2);
    constexpr hf_pin_num_t PC3  = EncodePin(GpioPort::C, 3);
    constexpr hf_pin_num_t PC4  = EncodePin(GpioPort::C, 4);
    constexpr hf_pin_num_t PC5  = EncodePin(GpioPort::C, 5);
    constexpr hf_pin_num_t PC6  = EncodePin(GpioPort::C, 6);
    constexpr hf_pin_num_t PC7  = EncodePin(GpioPort::C, 7);
    constexpr hf_pin_num_t PC8  = EncodePin(GpioPort::C, 8);
    constexpr hf_pin_num_t PC9  = EncodePin(GpioPort::C, 9);
    constexpr hf_pin_num_t PC10 = EncodePin(GpioPort::C, 10);
    constexpr hf_pin_num_t PC11 = EncodePin(GpioPort::C, 11);
    constexpr hf_pin_num_t PC12 = EncodePin(GpioPort::C, 12);
    constexpr hf_pin_num_t PC13 = EncodePin(GpioPort::C, 13);
    constexpr hf_pin_num_t PC14 = EncodePin(GpioPort::C, 14);
    constexpr hf_pin_num_t PC15 = EncodePin(GpioPort::C, 15);
 
    constexpr hf_pin_num_t PD0  = EncodePin(GpioPort::D, 0);
    constexpr hf_pin_num_t PD1  = EncodePin(GpioPort::D, 1);
    constexpr hf_pin_num_t PD2  = EncodePin(GpioPort::D, 2);
}  // namespace pin
 
}  // namespace hf::stm32
 
// ═══════════════════════════════════════════════════════════════════════════════
// STM32 I2C CONFIGURATION TYPES
// ═══════════════════════════════════════════════════════════════════════════════
 
enum class hf_stm32_i2c_addr_mode_t : hf_u8_t {
    ADDR_7BIT  = 0,  
    ADDR_10BIT = 1   
};
 
struct hf_i2c_bus_config_t {
    I2C_HandleTypeDef* hal_handle;    
    hf_u32_t default_timeout_ms;      
    bool use_dma;                     
 
    hf_i2c_bus_config_t() noexcept
        : hal_handle(nullptr), default_timeout_ms(1000), use_dma(false) {}
 
    explicit hf_i2c_bus_config_t(I2C_HandleTypeDef* handle,
                                  hf_u32_t timeout_ms = 1000,
                                  bool dma = false) noexcept
        : hal_handle(handle), default_timeout_ms(timeout_ms), use_dma(dma) {}
};
 
struct hf_i2c_device_config_t {
    hf_u16_t device_address;                             
    hf_stm32_i2c_addr_mode_t addr_mode;                  
    hf_u32_t scl_speed_hz;                               
    bool disable_ack_check;                               
 
    hf_i2c_device_config_t() noexcept
        : device_address(0),
          addr_mode(hf_stm32_i2c_addr_mode_t::ADDR_7BIT),
          scl_speed_hz(100000),
          disable_ack_check(false) {}
};
 
// ═══════════════════════════════════════════════════════════════════════════════
// STM32 SPI CONFIGURATION TYPES
// ═══════════════════════════════════════════════════════════════════════════════
 
enum class hf_stm32_spi_mode_t : hf_u8_t {
    MODE_0 = 0,  
    MODE_1 = 1,  
    MODE_2 = 2,  
    MODE_3 = 3   
};
 
struct hf_spi_bus_config_t {
    SPI_HandleTypeDef* hal_handle;     
    hf_u32_t default_timeout_ms;       
    bool use_dma;                      
 
    hf_spi_bus_config_t() noexcept
        : hal_handle(nullptr), default_timeout_ms(1000), use_dma(false) {}
 
    explicit hf_spi_bus_config_t(SPI_HandleTypeDef* handle,
                                  hf_u32_t timeout_ms = 1000,
                                  bool dma = false) noexcept
        : hal_handle(handle), default_timeout_ms(timeout_ms), use_dma(dma) {}
};
 
struct hf_spi_device_config_t {
    hf_u32_t clock_speed_hz;          
    hf_stm32_spi_mode_t mode;         
    GPIO_TypeDef* cs_port;             
    hf_u16_t cs_pin;                   
    bool cs_active_low;                
 
    hf_spi_device_config_t() noexcept
        : clock_speed_hz(1000000), mode(hf_stm32_spi_mode_t::MODE_0),
          cs_port(nullptr), cs_pin(0), cs_active_low(true) {}
};
 
// ═══════════════════════════════════════════════════════════════════════════════
// STM32 UART CONFIGURATION TYPES
// ═══════════════════════════════════════════════════════════════════════════════
 
enum class hf_stm32_uart_data_bits_t : hf_u8_t {
    DATA_7_BITS = 7,
    DATA_8_BITS = 8,
    DATA_9_BITS = 9
};
 
enum class hf_stm32_uart_parity_t : hf_u8_t {
    NONE = 0,
    EVEN = 1,
    ODD  = 2
};
 
enum class hf_stm32_uart_stop_bits_t : hf_u8_t {
    STOP_1   = 0,
    STOP_2   = 1
};
 
struct hf_stm32_uart_config_t {
    UART_HandleTypeDef* hal_handle;       
    hf_u32_t default_timeout_ms;          
    bool use_dma_tx;                      
    bool use_dma_rx;                      
    hf_u16_t rx_buffer_size;              
    hf_u16_t tx_buffer_size;              
 
    hf_stm32_uart_config_t() noexcept
        : hal_handle(nullptr), default_timeout_ms(1000),
          use_dma_tx(false), use_dma_rx(false),
          rx_buffer_size(hf::stm32::kUartDefaultBufferSize),
          tx_buffer_size(hf::stm32::kUartDefaultBufferSize) {}
 
    explicit hf_stm32_uart_config_t(UART_HandleTypeDef* handle,
                                     hf_u32_t timeout_ms = 1000) noexcept
        : hal_handle(handle), default_timeout_ms(timeout_ms),
          use_dma_tx(false), use_dma_rx(false),
          rx_buffer_size(hf::stm32::kUartDefaultBufferSize),
          tx_buffer_size(hf::stm32::kUartDefaultBufferSize) {}
};
 
// ═══════════════════════════════════════════════════════════════════════════════
// STM32 CAN CONFIGURATION TYPES
// ═══════════════════════════════════════════════════════════════════════════════
 
enum class hf_stm32_can_type_t : hf_u8_t {
    BXCAN  = 0,  
    FDCAN  = 1   
};
 
struct hf_stm32_can_config_t {
    hf_stm32_can_type_t can_type;      
    void* hal_handle;                   
    hf_u32_t default_timeout_ms;        
    bool loopback_mode;                 
    bool silent_mode;                   
 
    hf_stm32_can_config_t() noexcept
        : can_type(hf_stm32_can_type_t::BXCAN), hal_handle(nullptr),
          default_timeout_ms(1000), loopback_mode(false), silent_mode(false) {}
};
 
// ═══════════════════════════════════════════════════════════════════════════════
// STM32 PWM CONFIGURATION TYPES
// ═══════════════════════════════════════════════════════════════════════════════
 
enum class hf_stm32_pwm_channel_t : hf_u32_t {
    CHANNEL_1 = 0x00000000U,   
    CHANNEL_2 = 0x00000004U,   
    CHANNEL_3 = 0x00000008U,   
    CHANNEL_4 = 0x0000000CU    
};
 
struct hf_stm32_pwm_config_t {
    TIM_HandleTypeDef* hal_handle;   
    hf_u8_t num_channels;            
    bool complementary_output;       
    hf_u16_t dead_time_ns;           
 
    hf_stm32_pwm_config_t() noexcept
        : hal_handle(nullptr), num_channels(1),
          complementary_output(false), dead_time_ns(0) {}
 
    explicit hf_stm32_pwm_config_t(TIM_HandleTypeDef* handle,
                                    hf_u8_t channels = 1) noexcept
        : hal_handle(handle), num_channels(channels),
          complementary_output(false), dead_time_ns(0) {}
};
 
// ═══════════════════════════════════════════════════════════════════════════════
// STM32 ADC CONFIGURATION TYPES
// ═══════════════════════════════════════════════════════════════════════════════
 
enum class hf_stm32_adc_resolution_t : hf_u8_t {
    BITS_6  = 6,
    BITS_8  = 8,
    BITS_10 = 10,
    BITS_12 = 12,
    BITS_14 = 14,   
    BITS_16 = 16    
};
 
struct hf_stm32_adc_config_t {
    ADC_HandleTypeDef* hal_handle;             
    hf_stm32_adc_resolution_t resolution;      
    float vref_v;                              
    hf_u8_t num_channels;                      
 
    hf_stm32_adc_config_t() noexcept
        : hal_handle(nullptr),
          resolution(hf_stm32_adc_resolution_t::BITS_12),
          vref_v(hf::stm32::kAdcDefaultVrefV),
          num_channels(1) {}
 
    explicit hf_stm32_adc_config_t(ADC_HandleTypeDef* handle,
                                    hf_u8_t channels = 1,
                                    float vref = hf::stm32::kAdcDefaultVrefV) noexcept
        : hal_handle(handle),
          resolution(hf_stm32_adc_resolution_t::BITS_12),
          vref_v(vref),
          num_channels(channels) {}
};
 
// ═══════════════════════════════════════════════════════════════════════════════
// STM32 NVS (FLASH) CONFIGURATION TYPES
// ═══════════════════════════════════════════════════════════════════════════════
 
struct hf_stm32_nvs_config_t {
    hf_u32_t flash_start_address;    
    hf_u32_t flash_size;             
    hf_u32_t sector_size;            
    hf_u8_t num_sectors;             
 
    hf_stm32_nvs_config_t() noexcept
        : flash_start_address(0), flash_size(0),
          sector_size(hf::stm32::kNvsDefaultSectorSize), num_sectors(2) {}
 
    hf_stm32_nvs_config_t(hf_u32_t start_addr, hf_u32_t size,
                           hf_u32_t sect_size = hf::stm32::kNvsDefaultSectorSize) noexcept
        : flash_start_address(start_addr), flash_size(size),
          sector_size(sect_size),
          num_sectors(static_cast<hf_u8_t>(size / sect_size)) {}
};
 
// ═══════════════════════════════════════════════════════════════════════════════
// STM32 TIMER CONFIGURATION TYPES
// ═══════════════════════════════════════════════════════════════════════════════
 
struct hf_stm32_timer_config_t {
    TIM_HandleTypeDef* hal_handle;   
    hf_u32_t prescaler;              
    bool use_interrupt;              
 
    hf_stm32_timer_config_t() noexcept
        : hal_handle(nullptr), prescaler(0), use_interrupt(true) {}
 
    explicit hf_stm32_timer_config_t(TIM_HandleTypeDef* handle) noexcept
        : hal_handle(handle), prescaler(0), use_interrupt(true) {}
};
 
// ═══════════════════════════════════════════════════════════════════════════════
// STM32 GPIO CONFIGURATION TYPE
// ═══════════════════════════════════════════════════════════════════════════════
 
struct hf_stm32_gpio_config_t {
    GPIO_TypeDef* port;              
    hf_u16_t pin_mask;               
 
    hf_stm32_gpio_config_t() noexcept : port(nullptr), pin_mask(0) {}
 
    hf_stm32_gpio_config_t(GPIO_TypeDef* gpio_port, hf_u16_t pin) noexcept
        : port(gpio_port), pin_mask(pin) {}
};
 
// ═══════════════════════════════════════════════════════════════════════════════
// STM32 HAL STATUS CONVERSION UTILITY
// ═══════════════════════════════════════════════════════════════════════════════
 
namespace hf::stm32 {
 
enum class HalStatus : hf_u8_t {
    OK      = 0x00U,
    ERROR   = 0x01U,
    BUSY    = 0x02U,
    TIMEOUT = 0x03U
};
 
constexpr HalStatus ToHalStatus(hf_u32_t raw_status) noexcept {
    switch (raw_status) {
        case 0: return HalStatus::OK;
        case 1: return HalStatus::ERROR;
        case 2: return HalStatus::BUSY;
        case 3: return HalStatus::TIMEOUT;
        default: return HalStatus::ERROR;
    }
}
 
constexpr bool IsHalOk(hf_u32_t raw_status) noexcept {
    return raw_status == 0;
}
 
}  // namespace hf::stm32