p33c_gpio.c

/* Microchip Technology Inc. and its subsidiaries.  You may use this software 
 * and any derivatives exclusively with Microchip products. 
 * 
 * THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS".  NO WARRANTIES, WHETHER 
 * EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, INCLUDING ANY IMPLIED 
 * WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY, AND FITNESS FOR A 
 * PARTICULAR PURPOSE, OR ITS INTERACTION WITH MICROCHIP PRODUCTS, COMBINATION 
 * WITH ANY OTHER PRODUCTS, OR USE IN ANY APPLICATION. 
 *
 * IN NO EVENT WILL MICROCHIP BE LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, 
 * INCIDENTAL OR CONSEQUENTIAL LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND 
 * WHATSOEVER RELATED TO THE SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS 
 * BEEN ADVISED OF THE POSSIBILITY OR THE DAMAGES ARE FORESEEABLE.  TO THE 
 * FULLEST EXTENT ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS 
 * IN ANY WAY RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF 
 * ANY, THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE.
 *
 * MICROCHIP PROVIDES THIS SOFTWARE CONDITIONALLY UPON YOUR ACCEPTANCE OF THESE 
 * TERMS. 
 */
 
// Include standard header files
#include <xc.h> // include processor files - each processor file is guarded.  
#include <stdint.h> // include standard integer data types
#include <stdbool.h> // include standard boolean data types
#include <stddef.h> // include standard definition data types
 
#include "p33c_gpio.h"
 
 
volatile struct P33C_GPIO_INSTANCE_s* p33c_GpioInstance_GetHandle(volatile uint16_t gpioInstance)
{
    volatile struct P33C_GPIO_INSTANCE_s* gpio;
    
    // Capture Handle: set pointer to memory address of desired GPIO instance
    gpio = (volatile struct P33C_GPIO_INSTANCE_s*) 
        ((volatile uint8_t*) &ANSELA + (gpioInstance * P33C_GPIO_SFR_OFFSET));
    
    return(gpio);
}
 
 
volatile uint16_t p33c_GpioInstance_Dispose(volatile uint16_t gpioInstance)
{
    volatile uint16_t retval=1;
    
    retval = p33c_GpioInstance_ConfigWrite(gpioInstance, gpioConfigClear);
    
    return(retval);
}
 
 
volatile struct P33C_GPIO_INSTANCE_s p33c_GpioInstance_ConfigRead(volatile uint16_t gpioInstance)
{
    volatile struct P33C_GPIO_INSTANCE_s* gpio;
 
    // Set pointer to memory address of desired GPIO instance
    gpio = (volatile struct P33C_GPIO_INSTANCE_s*) 
        ((volatile uint8_t*) &ANSELA + (gpioInstance * P33C_GPIO_SFR_OFFSET));
 
    return(*gpio);
    
}
 
 
volatile uint16_t p33c_GpioInstance_ConfigWrite(
        volatile uint16_t gpioInstance, 
        volatile struct P33C_GPIO_INSTANCE_s gpioConfig
)
{
    volatile uint16_t retval=1;
    volatile struct P33C_GPIO_INSTANCE_s* gpio;    
 
    // Set pointer to memory address of desired GPIO instance
    gpio = (volatile struct P33C_GPIO_INSTANCE_s*) 
        ((volatile uint8_t*) &ANSELA + (gpioInstance * P33C_GPIO_SFR_OFFSET));
    *gpio = gpioConfig;
    
    return(retval);
    
}
 
 
/* ============================================================================== */
/* ============================================================================== */
/* ============================================================================== */
 
 
volatile struct P33C_GPIO_INSTANCE_s gpioConfigClear = {
    
        .ANSELx.value = 0x0000, // Disable all analog functions
        .CNCONx.value = 0x0000, // Reset all change notification configurations
        .CNEN0x.value = 0x0000, // Disable all change notification functions
        .CNEN1x.value = 0x0000, // Disable all change notification functions
        .CNFx.value = 0x0000, // Clear all change notification interrupt flags
        .CNPDx.value = 0x0000, // Disable all dull-down resistors
        .CNPUx.value = 0x0000, // Disable all dull-up resistors
        .CNSTATx.value = 0x0000, // Clear all change notification status notifications
        .LATx.value = 0x0000, // Set all IOs of selected instance LOW
        .ODCx.value = 0x0000, // Clear all open-drain configurations of instance
        .PORTx.value = 0x0000, // CLear port registers of all IOs of instance 
        .TRISx.value = 0x1111, // Set all IOs of instance to INPUT
        
    };
 
 
// end of file