William Reynolds / Mbed 2 deprecated LPC_Bootloader

Dependencies:   mbed

LPC.h@7:d0f98d61ec4c, 2011-09-30 (annotated)

Committer:
daugihao
Date:
Fri Sep 30 14:55:11 2011 +0000
Revision:
7:d0f98d61ec4c
Parent:
3:eb6d9211592d 
Some slight alterations and comment addition

Who changed what in which revision?

UserRevisionLine numberNew contents of line
daugihao 0:15536fa79743 1 #ifndef MBED_LPC_H
daugihao 0:15536fa79743 2 #define MBED_LPC_H
daugihao 0:15536fa79743 3 #include "mbed.h"
daugihao 0:15536fa79743 4
daugihao 0:15536fa79743 5 class SerialBuffered {
daugihao 0:15536fa79743 6 public:
daugihao 0:15536fa79743 7 SerialBuffered();
daugihao 0:15536fa79743 8 SerialBuffered( size_t bufferSize, PinName tx, PinName rx );
daugihao 0:15536fa79743 9 virtual ~SerialBuffered();
daugihao 0:15536fa79743 10 int getc(); // will block till the next character turns up, or return -1 if there is a timeout
daugihao 0:15536fa79743 11 int readable(); // returns 1 if there is a character available to read, 0 otherwise
daugihao 0:15536fa79743 12 void setTimeout( float seconds ); // maximum time in seconds that getc() should block while waiting for a character. Pass -1 to disable the timeout
daugihao 0:15536fa79743 13 size_t readBytes(char *bytes, size_t requested ); //Read requested bytes into a buffer, return number actually read, which may be less than requested if there has been a timeout
daugihao 0:15536fa79743 14
daugihao 0:15536fa79743 15 void InitUART(int baud); //Sets the baud rate to a user-defined value
daugihao 0:15536fa79743 16 void TargetSendString(char string[]); //Sends a string to the board
daugihao 0:15536fa79743 17 void TargetSendStringAndCR(char string[]); //Sends a string to the board followed by a carriage return character
daugihao 0:15536fa79743 18 int CheckTargetPresent(void); //Starts the handshaking and then verifies the type of chip from a returned ID code
daugihao 1:0872c208795f 19 int ProgramFile(void); //Programs the UUEncoded data onto the RAM and the copies into the flash
daugihao 0:15536fa79743 20 int UUEncode(void); //Encodes the file into UU-encoded format
daugihao 0:15536fa79743 21 int Encode3(void); //Sub-function to UUEncode which encodes the 3 raw bytes into 4 UU-encoded bytes
daugihao 0:15536fa79743 22 int FirstEncode(void); //Encodes the first UUEncoded line which needs the first checksum added to it as the 8th DWORD
daugihao 0:15536fa79743 23 int EndUUEncode(void); //Function to encode the last 124 bytes of the 1024 byte blocks and output to enduuline[]
daugihao 0:15536fa79743 24 int SectorFill(int add); //Function to load the data onto the board, keeping track of position in FLASH memory
daugihao 0:15536fa79743 25 int IDCheck(int idcode); //Function that looks up the relevant information about the chip from a returned ID code
daugihao 0:15536fa79743 26
daugihao 0:15536fa79743 27 private:
daugihao 0:15536fa79743 28 FILE *f; //File pointer (binary file for writing to the chip and a temporary file with the checksum-added DWORD)
daugihao 0:15536fa79743 29 int lastSector; //Variable defnining the number of sectors which exist in Flash memory on the specific LPC17xx chip
daugihao 0:15536fa79743 30 char strChipType[80]; //Char array containing the chip type
daugihao 0:15536fa79743 31 char fname[64]; //Char array containing the file name specified in the main.cpp
daugihao 0:15536fa79743 32 char buf[1024]; //Char array containing the currently returned string from the LPC17xx board
daugihao 0:15536fa79743 33 int n1, n2, n3, n4; //UU-Encoded 4 bytes corresponding to the converted 3 raw bytes
daugihao 0:15536fa79743 34 int ch1, ch2, ch3; //3 raw bytes for conversion into the 4 bytes above --^
daugihao 0:15536fa79743 35 int sum20, checksum; //Checksum sent after a certain number of UU-Encoded lines
daugihao 0:15536fa79743 36 bool readAll; //Global variable determining if the file has been encoded and sent fully
daugihao 2:9e3ee0c6536b 37 char uuline[64]; //Contains the current UU-encoded line to be sent to the board next
daugihao 2:9e3ee0c6536b 38 char enduuline[52]; //Output array from EndUUEncode()
daugihao 0:15536fa79743 39 char sum[45], sum1[28]; //The char arrays assist in the conversion to big-endian for the FirstEncode() function
daugihao 0:15536fa79743 40 unsigned int id; //ID code for the attached chip
daugihao 0:15536fa79743 41 int bytesfilled; //Int to keep track of the position in the 1024 byte block (sets up triggering of switching to EndUUEncode()
daugihao 0:15536fa79743 42 int lines; //Keeps track of the number of lines sent before a checksum (checksum should be sent after every 20 UUline block where possible
daugihao 0:15536fa79743 43 bool firstencode; //True if no encoding of the file has been done
daugihao 0:15536fa79743 44 int maxsector; //Number of sectors required in order to accommodate the program, based on filesize
daugihao 0:15536fa79743 45 long int filesize; //Filesize is the...file...size (number of bytes in the file to load to the chip)
daugihao 1:0872c208795f 46 int RAM;
daugihao 3:eb6d9211592d 47 char speed[10];
daugihao 0:15536fa79743 48
daugihao 0:15536fa79743 49 //Serial Buffered
daugihao 0:15536fa79743 50 void handleInterrupt();
daugihao 0:15536fa79743 51
daugihao 0:15536fa79743 52 uint8_t *m_buff; //Points at a circular buffer, containing data from m_contentStart, for m_contentSize bytes, wrapping when you get to the end
daugihao 0:15536fa79743 53 uint16_t m_contentStart; //Index of first bytes of content
daugihao 0:15536fa79743 54 uint16_t m_contentEnd; //Index of bytes after last byte of content
daugihao 0:15536fa79743 55 uint16_t m_buffSize;
daugihao 0:15536fa79743 56 float m_timeout; //Can be user-defined
daugihao 0:15536fa79743 57 Timer m_timer; //Timeout timer
daugihao 0:15536fa79743 58
daugihao 0:15536fa79743 59 Serial target;
daugihao 0:15536fa79743 60 };
daugihao 0:15536fa79743 61 #endif