C++ (Cpp) HAL_ARM_AT91_GPIO_CFG_DIRECTION Examples

Example #1

File: at91sam7sek_misc.c Project: EPiCS/reconos_v2

// The development board has four LEDs
void 
hal_at91_led (int val)
{
  HAL_ARM_AT91_GPIO_CFG_DIRECTION(AT91_GPIO_PA0, AT91_PIN_OUT);
  HAL_ARM_AT91_GPIO_CFG_DIRECTION(AT91_GPIO_PA1, AT91_PIN_OUT);
  HAL_ARM_AT91_GPIO_CFG_DIRECTION(AT91_GPIO_PA2, AT91_PIN_OUT);
  HAL_ARM_AT91_GPIO_CFG_DIRECTION(AT91_GPIO_PA3, AT91_PIN_OUT);
  
  HAL_ARM_AT91_GPIO_CFG_PULLUP(AT91_GPIO_PA0, AT91_PIN_PULLUP_DISABLE);
  HAL_ARM_AT91_GPIO_CFG_PULLUP(AT91_GPIO_PA1, AT91_PIN_PULLUP_DISABLE);
  HAL_ARM_AT91_GPIO_CFG_PULLUP(AT91_GPIO_PA2, AT91_PIN_PULLUP_DISABLE);
  HAL_ARM_AT91_GPIO_CFG_PULLUP(AT91_GPIO_PA3, AT91_PIN_PULLUP_DISABLE);

  // Set the bits. The logic is inverted 
  HAL_ARM_AT91_GPIO_PUT(AT91_GPIO_PA1, !(val & 1));
  HAL_ARM_AT91_GPIO_PUT(AT91_GPIO_PA2, !(val & 2));
  HAL_ARM_AT91_GPIO_PUT(AT91_GPIO_PA3, !(val & 4));
  HAL_ARM_AT91_GPIO_PUT(AT91_GPIO_PA4, !(val & 8));
}

Example #2

File: spi_at91.c Project: KarenHung/ecosgit

static void spi_at91_init_bus(cyg_spi_at91_bus_t * spi_bus)
{
    cyg_uint32 ctr;
    // Create and attach SPI interrupt object
    cyg_drv_interrupt_create(spi_bus->interrupt_number,
                             4,                   
                             (cyg_addrword_t)spi_bus,   
                             spi_at91_ISR,
                             spi_at91_DSR,
                             &spi_bus->spi_interrupt_handle,
                             &spi_bus->spi_interrupt);

    cyg_drv_interrupt_attach(spi_bus->spi_interrupt_handle);

    // Init transfer mutex and condition
    cyg_drv_mutex_init(&spi_bus->transfer_mx);
    cyg_drv_cond_init(&spi_bus->transfer_cond, 
                      &spi_bus->transfer_mx);
   
    // Init flags
    spi_bus->transfer_end = true;
    spi_bus->cs_up        = false;
    
    // Soft reset the SPI controller
    HAL_WRITE_UINT32(spi_bus->base+AT91_SPI_CR, AT91_SPI_CR_SWRST);

    // Configure SPI pins
      

    // Put SPI chip select pins in IO output mode
    for(ctr = 0;ctr<4;ctr++)
    {
       if(spi_bus->cs_en[ctr])
       {
          HAL_ARM_AT91_GPIO_CFG_DIRECTION(spi_bus->cs_gpio[ctr],AT91_PIN_OUT);
          HAL_ARM_AT91_GPIO_SET(spi_bus->cs_gpio[ctr]);
       }
    }
    // Call upper layer bus init
    CYG_SPI_BUS_COMMON_INIT(&spi_bus->spi_bus);
}