/* Deselect given device on the SPI bus. 
Calls board chip deselect. */
void usart_spi_deselect_device(USART_t *usart, struct usart_spi_device *device)
/* Deselect given device on the SPI bus. 
Calls board chip deselect. */
void usart_spi_deselect_device(USART_t *usart, struct usart_spi_device *device)
{
	ioport_set_pin_high(device->id);
}