void BSP_SPI_Init(void)
{
    __GPIOB_CLK_ENABLE();
    __SPI2_CLK_ENABLE();

    spi.Instance               = SPI2;
    spi.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_256;
    spi.Init.Direction = SPI_DIRECTION_2LINES;

    //spi.Init.CLKPhase = SPI_PHASE_1EDGE;   STM32F
    spi.Init.CLKPhase = SPI_PHASE_2EDGE;

    //spi.Init.CLKPolarity = SPI_POLARITY_LOW;  STM32F
    spi.Init.CLKPolarity = SPI_POLARITY_HIGH;

    spi.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLED;
    spi.Init.CRCPolynomial     = 7;
    spi.Init.DataSize = SPI_DATASIZE_8BIT;

    spi.Init.FirstBit = SPI_FIRSTBIT_MSB;
    spi.Init.NSS = SPI_NSS_SOFT;
    spi.Init.TIMode = SPI_TIMODE_DISABLED;
    spi.Init.Mode = SPI_MODE_MASTER;

    if (HAL_SPI_Init(&spi) != HAL_OK)
    {
        __asm("bkpt 255");
    }

    GPIO_InitTypeDef  GPIO_InitStruct;

    // Configurazione SPI2 completa su Porta B: PB13 (SCK), PB14 (MISO), PB15 (MOSI)
    GPIO_InitStruct.Pin       = GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15;
    GPIO_InitStruct.Mode      = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull      = GPIO_PULLUP;
    GPIO_InitStruct.Speed     = GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF5_SPI2;

    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

    __HAL_RCC_GPIOB_CLK_ENABLE(); // Già abilitato sopra

    GPIO_InitStruct.Pin = GPIO_PIN_12|GPIO_PIN_11;
    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;

    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

    // Porta il CS alto (disattivato) a riposo
    HAL_GPIO_WritePin(GPIOB, GPIO_PIN_12, GPIO_PIN_SET);

    // PGA mute pin
    HAL_GPIO_WritePin(GPIOB, GPIO_PIN_11, GPIO_PIN_SET);
}

void BSP_SPI_Write(uint8_t ValueL, uint8_t ValueR)
{
    HAL_GPIO_WritePin(GPIOB, GPIO_PIN_12, GPIO_PIN_RESET);
    __NOP(); __NOP(); __NOP(); __NOP();
    HAL_SPI_Transmit(&spi, (uint8_t *)&ValueL, 1, HAL_MAX_DELAY);
    HAL_SPI_Transmit(&spi, (uint8_t *)&ValueR, 1, HAL_MAX_DELAY);
    while (HAL_SPI_GetState(&spi) != HAL_SPI_STATE_READY);
    HAL_GPIO_WritePin(GPIOB, GPIO_PIN_12, GPIO_PIN_SET);

}