helper_functions.c

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/*
 * The Clear BSD License
 * Copyright (c) 2018 Adesto Technologies Corporation, Inc
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted (subject to the limitations in the disclaimer below) provided
 *  that the following conditions are met:
 *
 * o Redistributions of source code must retain the above copyright notice, this list
 *   of conditions and the following disclaimer.
 *
 * o Redistributions in binary form must reproduce the above copyright notice, this
 *   list of conditions and the following disclaimer in the documentation and/or
 *   other materials provided with the distribution.
 *
 * o Neither the name of the copyright holder nor the names of its
 *   contributors may be used to endorse or promote products derived from this
 *   software without specific prior written permission.
 *
 * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE.
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "helper_functions.h"

void displayByteArray(uint8_t *byteArray, uint32_t numBytes)
{
    printSPIExchange(NULL, 0, byteArray, numBytes);
}

void fillArrayPattern(uint8_t * byteArray, uint32_t numBytes, int seedNumber)
{
    for(int i = 0; i < numBytes; i++)
    {
        byteArray[i] = (uint8_t)(seedNumber+i);
    }
}

void fillArrayConst(uint8_t * byteArray, uint32_t numBytes, int constantNum)
{
    for(int i = 0; i < numBytes; i++)
    {
        byteArray[i] = (uint8_t)(constantNum);
    }
}

bool compareByteArrays(uint8_t *arr1, uint8_t *arr2, uint32_t arrLength)
{
    uint32_t numErrors = 0;
    for(int i = 0; i < arrLength; i++)
    {
        if(arr1[i] != arr2[i])
        {
            printf("Mismatch @ index: %d - Array 1: 0x%02X | Array 2: 0x%02X\n", i, arr1[i], arr2[i]);
            numErrors++;
        }
    }
    printf("Byte comparison total mismatches: %d\n", numErrors);
    return (numErrors == 0) ? 1 : 0;
}

void load4BytesToTxBuffer(uint8_t *txBuffer, uint8_t opcode, uint32_t address)
{
    txBuffer[0] = opcode;
    txBuffer[1] = (uint8_t) (address >> 16);
    txBuffer[2] = (uint8_t) (address >> 8);
    txBuffer[3] = (uint8_t) address;
}

// TODO: Make this faster.
void printSPIExchange(uint8_t *txBuffer,
                             uint32_t txNumBytes,
                             uint8_t *rxBuffer,
                             uint32_t rxNumBytes)
{
    if(txNumBytes != 0)
    {
        printf("\nSent bytes (0x):");
        for(uint32_t i = 0; i < txNumBytes; i++)
        {
            // %4 to print every 4 byte word
            if(i%1 == 0)
            {
                printf(" ");
            }
            if(i%16 == 0)
            {
                printf("\n");
            }
            printf("%02X", txBuffer[i]);
        }
    }
    if(rxNumBytes != 0)
    {
        printf("\nReceived bytes (0x):");
        for(uint32_t i = 0; i < rxNumBytes; i++)
        {
            // %4 to print every word (4 bytes)
            if(i%1 == 0)
            {
                printf(" ");
            }
            if(i%16 == 0)
            {
                printf("\n");
            }
            printf("%02X", rxBuffer[i]);
        }
    }
    printf("\n");
}