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57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
/**
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******************************************************************************
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* @file buff.h
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* @author Waveshare Team
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* @version V1.0.0
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* @date 23-January-2018
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* @brief ESP8266 WiFi server.
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* This file provides firmware functions:
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* + Sending web page of the tool to a client's browser
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* + Uploading images from client part by part
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*
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******************************************************************************
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*/
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/* Size, current position index and byte array of the buffer -----------------*/
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#define Buff__SIZE 2050
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int Buff__bufInd;
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char Buff__bufArr[Buff__SIZE];
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/* Reads a word from the buffer at specified position ------------------------*/
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int Buff__getByte(int index)
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{
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return Buff__bufArr[index];
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}
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/* Reads a byte from the buffer at specified position ------------------------*/
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int Buff__getWord(int index)
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{
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if (index + 1 >= Buff__SIZE) return -1;
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return Buff__bufArr[index] + (Buff__bufArr[index + 1] << 8);
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}
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/* Reads a byte from the buffer at specified position ------------------------*/
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int Buff__getN3(int index)
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{
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return (index + 3 > Buff__SIZE) ? 0 :
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(Buff__bufArr[index ] ) +
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(Buff__bufArr[index + 1] << 8) +
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(Buff__bufArr[index + 2] << 16);
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}
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/* Checks if the buffer's data ends with specified string --------------------*/
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int Buff__signature(int index, char*str)
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{
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// characters of the string to the end of the string
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while (*str != 0)
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{
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// If the correspondent character in the buffer isn't equal
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// to the string's character, return false
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if (Buff__bufArr[index++] != *str) return false;
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str++;
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}
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// Otherwise return true
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return true;
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}
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