/*FUNCTION*****************************************************************
*
* Function Name : lwgpio_init
* Returned Value : TRUE if succesfull, FALSE otherwise
* Comments :
* Decodes ID to HW specific struct and then performs pin initialization
*
*END*********************************************************************/
bool lwgpio_init
(
/* Pointer to LWGPIO internal structure to be filled in */
LWGPIO_STRUCT_PTR handle,
/* Pin ID, bitmask integer value */
LWGPIO_PIN_ID id,
/* Direction to be set within initialization */
LWGPIO_DIR dir,
/* Value to be set within initialization */
LWGPIO_VALUE value
)
{ /* Body */
uint32_t port_idx, pin_idx;
port_idx = LWGPIO_PORT_FROM_ID(id);
pin_idx = LWGPIO_PIN_FROM_ID(id);
handle->flags = id;
handle->pcr_reg = (uint32_t *) pcr_reg_arr[port_idx] + pin_idx;
handle->gpio_ptr = gpio_ptr_arr[port_idx];
handle->pinmask = 1 << pin_idx;
/* Set value prior to set to output */
if (value != LWGPIO_VALUE_NOCHANGE) {
/* Note: there is no check for values not defined as LWGPIO_VALUE enum */
lwgpio_set_value(handle, value);
}
if (dir != LWGPIO_DIR_NOCHANGE) {
/* Note: there is no check for values not defined as LWGPIO_DIR enum */
lwgpio_set_direction(handle, dir);
}
return TRUE;
}
/*FUNCTION****************************************************************
*
* Function Name : _bsp_get_gpio_base_address
* Returned Value : pointer to base of GPIO registers
* Comments :
* This function returns base address of GPIO related register space.
*
*END*********************************************************************/
uint_32 lwgpio_int_get_vector
(
/* Pin handle to get vector of */
LWGPIO_STRUCT_PTR handle
)
{
#if PSP_MQX_CPU_IS_VYBRID_A5
// return GIC ID
return 155 + LWGPIO_PORT_FROM_ID(handle->flags);
#elif PSP_MQX_CPU_IS_VYBRID_M4
// return CM4 VECTOR
return 123 + LWGPIO_PORT_FROM_ID(handle->flags);
#else
#error "Unsupported core"
#endif
}
/*FUNCTION****************************************************************
*
* Function Name : _bsp_get_gpio_base_address
* Returned Value : pointer to base of GPIO registers
* Comments :
* This function returns base address of GPIO related register space.
*
*END*********************************************************************/
uint32_t lwgpio_int_get_vector
(
/* Pin handle to get vector of */
LWGPIO_STRUCT_PTR handle
)
{
return INT_PORTA + LWGPIO_PORT_FROM_ID(handle->flags);
}