IAR Compiler Configuration

IAR Compiler Configuration (AVR)

1. EEPROM area data storage:
__eeprom unsigned char a; //Define a variable and store it in the EEPROM space
__eeprom unsigned char a @ 0x8; //Define a variable and store it in the EEPROM space 0X08 unit
__eeprom unsigned char p[] @ 0x22 //Define an array and store it in the EEPROM space, with the starting address being the 0X22 unit
__eeprom unsigned char a @ 0x08=9; //Define a constant and store it in the EEPROM space 0X08 unit
__eeprom unsigned char p[] @0x22={1，2，3，4，5，6，7，8};
EEPROM operation macro function: detailed description is in the comp_a90.h intrinsics.h header file.

Automatically generate .eep file settings: Observe which XCL file the project uses in the linker command line of Project->Options->linker->config>. This article uses M8 compilation, and the file used is "TOOLKIT_DIR$\src\template\cfgm8.xcl" -Ointel-extended, (CODE) = .hex
-Ointel-extended, (XDATA) = .eep

2. FLASH area data storage:
Use the keyword __flash to control storage. The effect of writing the __flash keyword before and after the data type is the same
__flash unsigned char a @ 0x8; //Define variables and store them in flash space 0X08 unit __flash
unsigned char p[] @ 0x22 //Define arrays and store them in flash space, with the starting address being 0X22 unit
__flash unsigned char a @ 0x08=9; //Define constants and store them in flash space 0X08 unit
__flash unsigned char p[] @ 0x22={1, 2, 3, 4, 5, 6, 7, 8};

unsigned int __flash * p; //Define a pointer to the flash space address, 16 bits.
unsigned int __farflash * p; //Define a pointer to the flash space address, 24 bits.
__flash unsigned char * p; //Define a pointer to the SARMM space address, the pointer itself is stored in the flash.
Flash operation macro function: detailed description in the comp_a90.h intrinsics.h header file

3. IAR compiler has stronger support for bits:
PORTB_ Bit2 = 1; //Set the second bit of PORTB = 1
PORTC_Bit4 = PORTB_Bit2; //Transfer the second bit of PORTB to the fourth bit of PORTC

4. The header file
avr_macros.h contains simplified writing of reading and writing 16-bit registers, and several bit operation functions.
comp_a90.h briefly writes a large number of intrinsic functions. The flash operation macro function
ina90.h contains "inavr.h" and "comp_A90.h". The file
intrinsics.h provides the simplest operation of the processor's underlying features. Sleep, watchdog, FLASH functions.
iomacro.HI/O register definition file sample.

#include 
#include 
#include  #include
#include 
#include 
#include 
#include 
#include 

5. Extra options
1. GP-system-Data stack: 0xff //Stack size setting
2. C/C++-Preprocessor: $PROJ_DIR$\headers\ //Header file location
C/C++-extra Option: --string_literals_in_flash //Define string in flash space
3. Linker-Extra Option:

-Ointel-extended,(XDATA)=.eep 
-Ointel-extended,(CODE)=.A90 
-Ointel-extended,(CODE)=.hex
5. Compatible with ICC compiler macro definition

#ifndef __ICCAVR__
#define __ICCAVR__
#endif

#ifndef BIT
#define BIT(x) (1 << (x))
#endif
#define NOP() __no_operation() //asm("nop")
#define CLI() __disable_interrupt() //asm("cli" )
#define SEI() __enable_interrupt() //asm("sei")

#pragma language=extended
#ifndef ENABLE_BIT_DEFINITIONS
#define ENABLE_BIT_DEFINITIONS
#endif