hexeditor for Arduino eeprom added

README.md

@@ -45,17 +45,10 @@ The parameters have the following meaning
 Hint: minicom can not display all graphics correctly because it supports only VT102 or ANSI and not VT220. Therefore it seems to have some problems with the colors. To solve this, change the terminal type manually  to ‘ansi’. Also it seems to have some issues with the graphical symbols for lines and corners.
 
 
-
 ## Examples
 
-### Temperature Demo
-The "temperature_demo" displays  bar graphs of a simulated disk storage.
-
-<p align="center">
-  <img src="screenshot.png" width="640"/>
-</p>
 
-### Hex Editor Demo 
+### Hex Editor EEPROM Demo
 Here is the "hexeditor_demo". 
 
 <p align="center">
@@ -72,5 +65,13 @@ static uint16_t    memmoryStartAddress = 0x100;    // ATMEGA RAM start
 hexedit (memmoryStartAddress);
 ...
 ```
-For detailed information see the "hexeditor_demo".
+For detailed information see the "hexeditor_demo" or "hexeditor_eeprom" Arduino sketch in the examples folder.
+
+
+### Temperature Demo
+The "temperature_demo" displays  bar graphs of a simulated disk storage.
+
+<p align="center">
+  <img src="screenshot.png" width="640"/>
+</p>
 

examples/hexeditor_eeprom/hexeditor_eeprom.ino

@@ -0,0 +1,76 @@
+/*-----------------------------------------------------------------------------------------------------------------
+
+   How to use the hexadecimal editor of MCURSES
+   to edit the EEPROM values of an ARDUINO
+
+   What:
+    With this example you can edit the EEPROM-Memory contents of the ARDUINO.
+
+   Why:
+    This may be useful to change the EEPROM contents directly in the microcontroller
+
+   Hint:
+    to exit the editor, press two times ESC
+
+   Revision History:
+   V1.0 2019 01 22 ChrisMicro, initial version
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+  ---------------------------------------------------------------------------------------------------------------*/
+
+#include <EEPROM.h>
+#include "hexedit.h"
+
+
+void Arduino_putchar(uint8_t c)
+{
+  Serial.write(c);
+}
+
+char Arduino_getchar()
+{
+  while (!Serial.available());
+  return Serial.read();
+}
+
+void Arduino_writeEEPROM(uint16_t address, uint8_t value)
+{
+  if(address<EEPROM.length()) EEPROM.write(address, value);
+}
+
+uint8_t Arduino_readEEPROM(uint16_t address)
+{
+  if(address<EEPROM.length()) return (uint8_t) EEPROM.read(address);
+  else return 0;
+}
+
+void setup()
+{
+
+  Serial.begin(115200);
+
+  setFunction_putchar(Arduino_putchar); // tell the library which output channel shall be used
+  setFunction_getchar(Arduino_getchar); // tell the library which input channel shall be used
+  setFunction_readMemory(Arduino_readEEPROM);
+  setFunction_writeMemory(Arduino_writeEEPROM);
+
+  initscr();                            // initialize mcurses
+
+}
+
+void loop()
+{
+  static uint16_t    memmoryStartAddress = 0;   
+
+  hexedit (memmoryStartAddress);
+
+  clear();
+  char str[] = "hexadecimal editor stopped";
+  Serial.println(str);
+
+  delay(3000);
+}

library.properties

@@ -1,4 +1,4 @@
-name=ncurses
+name=mcurses
 version=0.1
 author=ChrisMicro
 maintainer=ChrisMicro 

src/hexedit.c

@@ -6,6 +6,7 @@
  * Revision History:
  * V1.0 2015 xx xx Frank Meyer, original version
  * V1.1 2017 01 14 ChrisMicro, converted to Arduino example
+ * V1.2 2019 01 22 ChrisMicro, memory access functions can now be set
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -47,6 +48,7 @@ void hexedit(uint16_t offset);
 
 #define IS_HEX(ch)      (((ch) >= 'A' && (ch) <= 'F') || ((ch) >= 'a' && (ch) <= 'f') || ((ch) >= '0' && (ch) <= '9'))
 
+/*
 #ifdef unix
 #define PEEK(x)         memory[x]
 #define POKE(x,v)       memory[x] = (v)
@@ -55,6 +57,34 @@ unsigned char           memory[65536];
 #define PEEK(x)         *((unsigned char *) (x))
 #define POKE(x,v)       *((unsigned char *) (x)) = (v)
 #endif
+*/
+// default functions are RAM access functons by pointers
+uint8_t peekMemory(uint16_t address)
+{
+  uint8_t *p;
+  return p[address];
+}
+void    pokeMemory(uint16_t address, uint8_t value)
+{
+  uint8_t *p;
+  p[address]=value;
+}
+
+uint8_t (*FunctionPointer_readMemory)(uint16_t address)=peekMemory; // set default function
+void  (*FunctionPointer_writeMemory)(uint16_t address, uint8_t value)=pokeMemory; // set default function
+
+#define PEEK(x) FunctionPointer_readMemory(x)
+#define POKE(x,v) FunctionPointer_writeMemory(x,v)
+
+void setFunction_readMemory(uint8_t (*functionPointer)(uint16_t address))
+{
+  FunctionPointer_readMemory = functionPointer;
+}
+
+void setFunction_writeMemory(void (*functionPointer)(uint8_t ch))
+{
+  FunctionPointer_writeMemory = functionPointer;
+}
 
 /*---------------------------------------------------------------------------------------------------------------------------------------------------
  * itox: convert a decimal value 0-15 into hexadecimal digit

src/hexedit.h

@@ -1,24 +1,26 @@
 /*
- * hexedit.h
- *
- * Created: 18.01.2017 08:24:04
- *  Author: ChrisMicro
- */ 
+   hexedit.h
+
+   Created: 18.01.2017 08:24:04
+    Author: ChrisMicro
+*/
 
 #ifdef __cplusplus
 extern "C"
 {
-	#endif
+#endif
+
+#ifndef HEXEDIT_H_
+#define HEXEDIT_H_
 
-	#ifndef HEXEDIT_H_
-	#define HEXEDIT_H_
+#include "mcurses.h"
 
-	#include "mcurses.h"
-	
-	void hexedit (uint16_t offset);
+void hexedit (uint16_t offset);
+void setFunction_readMemory(uint8_t (*functionPointer)(uint16_t address));
+void setFunction_writeMemory(void (*functionPointer)(uint8_t ch));
 
-	#endif /* HEXEDIT_H_ */
+#endif /* HEXEDIT_H_ */
 
-	#ifdef __cplusplus
+#ifdef __cplusplus
 }
-#endif
+#endif