pinRegisters.h

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/*
Copyright 2020, 2021 Broadwell Consulting Inc.
 
Permission is hereby granted, free of charge, to any person obtaining a 
 * copy of this software and associated documentation files (the "Software"), 
 * to deal in the Software without restriction, including without limitation 
 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 
 * and/or sell copies of the Software, and to permit persons to whom the 
 * Software is furnished to do so, subject to the following conditions:
 
The above copyright notice and this permission notice shall be included in 
 * all copies or substantial portions of the Software.
 
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 
 * OTHER DEALINGS IN THE SOFTWARE.
*/
 
/* Serial Wombat is a trademark of Broadwell Consulting Inc. registered
 * in the United States. */
 
 
#ifndef PIN_TYPES_H
#define PIN_TYPES_H
 
#include <stdint.h>
 
#ifdef _PIC14EX 
#define BYTES_PER_PIN_REGISTER 20
#else
#define BYTES_PER_PIN_REGISTER 64
#define BYTES_AVAIALABLE_OUTPUT_PULSE 50
#define BYTES_AVAILABLE_INPUT_DMA (BYTES_PER_PIN_REGISTER - 5)
#endif
 
typedef union _pin_register_t{ 
    uint8_t bytes[BYTES_PER_PIN_REGISTER];
    uint16_t uwords[BYTES_PER_PIN_REGISTER/2];
 
    struct generic_n {
        uint16_t pinUwords[(BYTES_PER_PIN_REGISTER / 2) - 2];
        uint16_t buffer;
 
        uint8_t mode;     // Do not move
    } generic;
#ifndef _PIC14EX
    struct pulse_output_n
    {
        uint8_t bytes[BYTES_AVAIALABLE_OUTPUT_PULSE];
        uint8_t resource;
        uint8_t lastDMA;
        uint16_t highRemaining;
        uint16_t lowRemaining;
        uint16_t highReload;
        uint16_t lowReload;
        uint16_t buffer;
        uint16_t mode;
    } pulse_output;
    
    struct pulse_input_n
    {
        uint8_t bytes[BYTES_AVAILABLE_INPUT_DMA];
        uint8_t lastDMA;
        uint16_t buffer;
        uint16_t mode;
    }pulse_input;
    
#endif
} pinRegister_t;
 
 
#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
 
 
extern pinRegister_t PinUpdateRegisters[NUMBER_OF_TOTAL_PINS];
 
#ifdef _PIC14EX 
#define USE_BUFFERED_PIN_REGISTER
#endif
 
#ifdef USE_BUFFERED_PIN_REGISTER
extern  pinRegister_t pinRegisterBuffer;
void CopyFromArrayToPinBuffer(void);
void CopyFromPinBufferToArray(void);
#define CurrentPinRegister (&pinRegisterBuffer)
void CopyFromArrayToPinBuffer();
void CopyFromPinBufferToArray();
#else
    extern pinRegister_t* CurrentPinRegister;
#endif
 
 
void SetBuffer(uint8_t pin, uint16_t value);
uint16_t GetBuffer(uint8_t pin);
void SetMode(uint8_t pin, uint8_t mode);
uint8_t GetMode(uint8_t pin);
#endif