avr_utils.h

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#ifndef AVR_UTILS_H_
#define AVR_UTILS_H_
 
#include <stddef.h>
 
#pragma message ( "avr_utils.h included" )
 
void UTILS_ReverseBuffer(uint8_t *Buffer, size_t Size)
{
    uint8_t ch;
    uint8_t *begin_ptr = Buffer;
    uint8_t *end_ptr = Buffer + Size - 1;
    for (size_t i = 0; i < Size / 2; i++)
    {
        ch = *end_ptr;
        *end_ptr = *begin_ptr;
        *begin_ptr = ch;
        begin_ptr++;
        end_ptr--;
    }
}
 
void UTILS_ReverseString(char *Buffer)
{
    size_t size;
    char ch;
    char *begin_ptr = Buffer;
    char *end_ptr = Buffer;
    while (*++end_ptr);
    size = end_ptr - begin_ptr; 
    for (size_t i = 0; i < size / 2; i++)
    {
        ch = *end_ptr;
        *end_ptr = *begin_ptr;
        *begin_ptr = ch;    
        begin_ptr++;
        end_ptr--;
    }
}
 
uint8_t UTILS_IntToString(int Number, char *Buffer)
{
    uint8_t i = 0;
    uint8_t sign = 0;
    if (Number < 0)
    {
        Number *= -1;
        sign = 1;
    }
    do
    {
        Buffer[i++] = Number % 10 + '0';
    }
    while ((Number /= 10) > 0);
    if (sign == 1)
    {
        Buffer[i++] = '-';
    }
    UTILS_ReverseBuffer((uint8_t*)Buffer,i);
    Buffer[i] = '\0';
    return i;
}
 
uint8_t UTILS_LongToString(long Number, char *Buffer)
{
    uint8_t i = 0;
    uint8_t sign = 0;
    if (Number < 0)
    {
        Number *= -1;
        sign = 1;
    }
    do
    {
        Buffer[i++] = Number % 10 + '0';
    }
    while ((Number /= 10) > 0);
    if (sign == 1)
    {
        Buffer[i++] = '-';
    }
    UTILS_ReverseBuffer((uint8_t*)Buffer,i);
    Buffer[i] = '\0';
    return i;
}
 
uint8_t UTILS_FloatToString(float Number, char *Buffer, uint8_t Precision)
{
    int ipart = (int)Number;
    float fpart = Number - (float)ipart;
    size_t length1 = UTILS_IntToString(ipart,Buffer);
    if (Precision != 0) 
    {
        Buffer[length1] = '.';
    }
    if ((fpart < 0.1 && fpart > 0.0) || (fpart < -0.0 && fpart > -1.0))
    {
        length1++;
        Buffer[length1] = '0';
    }
    fpart = fpart * pow(10, Precision);
    fpart = abs(fpart);
    size_t length2 = UTILS_IntToString((int)fpart,Buffer+length1+1);
    Buffer[length1 + 1 + length2] = '\0';
    return length1 + 1 + length2;
}
 
int UTILS_StringToInt(char* Buffer)
{
    uint8_t sign = 0;
    int number = 0;
    if (*Buffer == '-')
    {
        sign = 1;
        Buffer++;
    }
    while (*Buffer)
    {
        number = number*10 + (*Buffer -'0');
        Buffer++;
    }
    if (sign)
    {
        number = (-1) * number;
    }
    return number;
}
 
int UTILS_StringToLong(char* Buffer)
{
    uint8_t sign = 0;
    long number = 0;
    if (*Buffer == '-')
    {
        sign = 1;
        Buffer++;
    }
    while (*Buffer)
    {
        number = number*10 + (*Buffer -'0');
        Buffer++;
    }
    if (sign)
    {
        number = (-1) * number;
    }
    return number;
}
 
#endif /* AVR_UTILS_H_ */