Exemplos de get_available_spi em C++ (Cpp)

Exemplo n.º 1

Arquivo: spi_api.c Projeto: Fadis/lpc810

void spi_init(spi_t *obj, PinName mosi, PinName miso, PinName sclk, PinName ssel) {
    int spi_n = get_available_spi();
    if (spi_n == -1) {
        error("No available SPI");
    }
    obj->spi_n = spi_n;
    spi_used |= (1 << spi_n);
    
    obj->spi = (spi_n) ? (LPC_SPI_TypeDef *)(LPC_SPI1_BASE) : (LPC_SPI_TypeDef *)(LPC_SPI0_BASE);
    
    const SWM_Map *swm;
    uint32_t regVal;
    
    swm = &SWM_SPI_SCLK[obj->spi_n];
    regVal = LPC_SWM->PINASSIGN[swm->n] & ~(0xFF << swm->offset);
    LPC_SWM->PINASSIGN[swm->n] = regVal |  (sclk   << swm->offset);
    
    swm = &SWM_SPI_MOSI[obj->spi_n];
    regVal = LPC_SWM->PINASSIGN[swm->n] & ~(0xFF << swm->offset);
    LPC_SWM->PINASSIGN[swm->n] = regVal |  (mosi   << swm->offset);
    
    swm = &SWM_SPI_MISO[obj->spi_n];
    regVal = LPC_SWM->PINASSIGN[swm->n] & ~(0xFF << swm->offset);
    LPC_SWM->PINASSIGN[swm->n] = regVal |  (miso   << swm->offset);
    
    swm = &SWM_SPI_SSEL[obj->spi_n];
    regVal = LPC_SWM->PINASSIGN[swm->n] & ~(0xFF << swm->offset);
    LPC_SWM->PINASSIGN[swm->n] = regVal |  (ssel   << swm->offset);
    
    // clear interrupts
    obj->spi->INTENCLR = 0x3f;
    
    // enable power and clocking
    switch (obj->spi_n) {
        case 0:
            LPC_SYSCON->SYSAHBCLKCTRL |= (1<<11);
            LPC_SYSCON->PRESETCTRL &= ~(0x1<<0);
            LPC_SYSCON->PRESETCTRL |= (0x1<<0);
            break;
        case 1:
            LPC_SYSCON->SYSAHBCLKCTRL |= (1<<12);
            LPC_SYSCON->PRESETCTRL &= ~(0x1<<1);
            LPC_SYSCON->PRESETCTRL |= (0x1<<1);
            break;
    }
    
    // set default format and frequency
    if (ssel == NC) {
        spi_format(obj, 8, 0, 0);  // 8 bits, mode 0, master
    } else {
        spi_format(obj, 8, 0, 1);  // 8 bits, mode 0, slave
    }
    spi_frequency(obj, 1000000);
    
    // enable the ssp channel
    ssp_enable(obj);
}

Exemplo n.º 2

Arquivo: spi_api.c Projeto: Archcady/mbed-os

void spi_init(spi_t *obj, PinName mosi, PinName miso, PinName sclk, PinName ssel)
{
    int spi_n = get_available_spi(mosi, miso, sclk, ssel);
    if (spi_n == -1) {
        error("No available SPI");
    }

    obj->spi_n = spi_n;
    spi_used |= (1 << spi_n);

    obj->spi = (spi_n) ? (LPC_SPI0_Type *)(LPC_SPI1_BASE) : (LPC_SPI0_Type *)(LPC_SPI0_BASE);

    const SWM_Map *swm;
    uint32_t regVal;

    if (sclk != NC) {
        swm = &SWM_SPI_SCLK[obj->spi_n];
        regVal = LPC_SWM->PINASSIGN[swm->n] & ~(0xFF << swm->offset);
        LPC_SWM->PINASSIGN[swm->n] = regVal |  (sclk   << swm->offset);
    }

    if (mosi != NC) {
        swm = &SWM_SPI_MOSI[obj->spi_n];
        regVal = LPC_SWM->PINASSIGN[swm->n] & ~(0xFF << swm->offset);
        LPC_SWM->PINASSIGN[swm->n] = regVal |  (mosi   << swm->offset);
    }

    if (miso != NC) {
        swm = &SWM_SPI_MISO[obj->spi_n];
        regVal = LPC_SWM->PINASSIGN[swm->n] & ~(0xFF << swm->offset);
        LPC_SWM->PINASSIGN[swm->n] = regVal |  (miso   << swm->offset);
    }

    if (ssel != NC) {
        swm = &SWM_SPI_SSEL[obj->spi_n];
        regVal = LPC_SWM->PINASSIGN[swm->n] & ~(0xFF << swm->offset);
        LPC_SWM->PINASSIGN[swm->n] = regVal |  (ssel   << swm->offset);
    }

    // clear interrupts
    obj->spi->INTENCLR = 0x3f;

    // enable power and clocking
    LPC_SYSCON->SYSAHBCLKCTRL1 |=  (0x1 << (obj->spi_n + 9));
    LPC_SYSCON->PRESETCTRL1    |=  (0x1 << (obj->spi_n + 9));
    LPC_SYSCON->PRESETCTRL1    &= ~(0x1 << (obj->spi_n + 9));
}

Exemplo n.º 3

Arquivo: spi_api.c Projeto: Archcady/mbed-os

void spi_init(spi_t *obj, PinName mosi, PinName miso, PinName sclk, PinName ssel) {
    int spi_n = get_available_spi();
    if (spi_n == -1) {
        error("No available SPI");
    }
    obj->spi_n = spi_n;
    spi_used |= (1 << spi_n);
    
    obj->spi = (spi_n) ? (LPC_SPI_TypeDef *)(LPC_SPI1_BASE) : (LPC_SPI_TypeDef *)(LPC_SPI0_BASE);
    
    const SWM_Map *swm;
    uint32_t regVal;
    
    swm = &SWM_SPI_SCLK[obj->spi_n];
    regVal = LPC_SWM->PINASSIGN[swm->n] & ~(0xFF << swm->offset);
    LPC_SWM->PINASSIGN[swm->n] = regVal |  (sclk   << swm->offset);
    
    swm = &SWM_SPI_MOSI[obj->spi_n];
    regVal = LPC_SWM->PINASSIGN[swm->n] & ~(0xFF << swm->offset);
    LPC_SWM->PINASSIGN[swm->n] = regVal |  (mosi   << swm->offset);
    
    swm = &SWM_SPI_MISO[obj->spi_n];
    regVal = LPC_SWM->PINASSIGN[swm->n] & ~(0xFF << swm->offset);
    LPC_SWM->PINASSIGN[swm->n] = regVal |  (miso   << swm->offset);
    
    swm = &SWM_SPI_SSEL[obj->spi_n];
    regVal = LPC_SWM->PINASSIGN[swm->n] & ~(0xFF << swm->offset);
    LPC_SWM->PINASSIGN[swm->n] = regVal |  (ssel   << swm->offset);
    
    // clear interrupts
    obj->spi->INTENCLR = 0x3f;
    
    // enable power and clocking
    switch (obj->spi_n) {
        case 0:
            LPC_SYSCON->SYSAHBCLKCTRL |= (1<<11);
            LPC_SYSCON->PRESETCTRL &= ~(0x1<<0);
            LPC_SYSCON->PRESETCTRL |= (0x1<<0);
            break;
        case 1:
            LPC_SYSCON->SYSAHBCLKCTRL |= (1<<12);
            LPC_SYSCON->PRESETCTRL &= ~(0x1<<1);
            LPC_SYSCON->PRESETCTRL |= (0x1<<1);
            break;
    }
}