Like the "Arduino-IDE" MyIDE comes with a folder called "../MyIDE/libraries".
These subfolders are intended for user-libraries which you create or
got from other sources.
Create a subfolder for the user-library and add the *.h and *.o files.
The library-files will be automatically included in the compile- and
link-process.
USART Library
I developped this library in order to make debugging easier.
I followed some ideas from the Arduino-library.
C++ & Arduino compatibility
This libray can not used in C-language, because I used
overwriting of functions which is a feature of C++
USART functions
- void USART_Init(void);
- unsigned char USART_Receive_Chr( void );
- unsigned char USART_Receive( void );
- void USART_Transmit( unsigned char );
- void USART_Putstring( char* );
- void USART_Getstring( char*, uint8_t );
- bool USART_Available();
- void USART_Flush();
New print functions
- void print(int);
- void print(unsigned int);
- void printNumber(unsigned long);
- void print(long);
- void print(unsigned long);
- void printFloat(double);
- void print(double);
- void print(float);
- void print(char*);
- void print(char);
- void println();
C++ Example
_____________________________________________________________________________________________________
#ifndef F_CPU
#define F_CPU 16000000 // CPU frequency for delay function
#endif
#include <avr/io.h>
#include <util/delay.h>
#include "USART.h" // customized for ATmega328P
#define MaxLen 32 // Buffer-length for incoming data
char ReceivedString[MaxLen]; // Buffer for Serial Input
int main(void) {
USART_Init(); // USART initialization for 9600 baud, ATmega328P
print("Hello world\n"); // "Hello world" - String["..."], '\0' automatically added
while (1) {
char char_Value = 'a'; // the single character 'a'
print(char_Value);
println(); // just a linefeed
// C-char string terminated with '\0'
char msg1[6] = {'o', 'k', 'a', 'y', '\r', '\0'};
print(msg1);
println();
int int_Value = -32767; // int16_t - signed number from -32768 to 32767
print(int_Value);
println();
_delay_ms(2000);
}
}
Implemented data types:
Derived from https://learn.sparkfun.com/tutorials/data-types-in-arduino/all
| Type | Description |
|---|---|
| bool (8 bit) | int8_t - simple logical true/false 1/0 |
| char (8 bit) | int8_t - signed number from -128 to 127 |
| unsigned char (8 bit) | uint8_t - unsigned number from 0-255 |
| int (16 bit) | int16_t - signed number from -32768 to 32767 |
| unsigned int (16 bit) | uint16_t - unsigned number from 0-65535 |
| long (32 bit) | int32_t - signed number from -2,147,483,648 to 2,147,483,647 |
| unsigned long (32 bit) | uint32_t - unsigned number from 0-4,294,967,295 |
| float (32 bit) | signed number from -3.4028235E38 to 3.4028235E38 |
| double | same as float |