Posted on August 18, 2015 at 09:56Today I also found this instructions inside the flash-library:
===============================================================================
Functions to be executed from RAM
===============================================================================
All the functions defined below must be executed from RAM exclusively, except
for the FLASH_WaitForLastOperation function which can be executed from Flash.
Steps of the execution from RAM differs from one toolchain to another:
- For Cosmic Compiler:
1- Define a segment FLASH_CODE by the mean of '' #pragma section (FLASH_CODE)''.
This segment is defined in the stm8l15x_flash.c file.
2- Uncomment the ''#define RAM_EXECUTION (1)'' line in the stm8l15x.h file,
or define it in Cosmic compiler preprocessor to enable the FLASH_CODE segment
definition.
3- In STVD Select Project\Settings\Linker\Category ''input'' and in the RAM section
add the FLASH_CODE segment with ''-ic'' options.
4- In main.c file call the _fctcpy() function with first segment character as
parameter ''_fctcpy('F');'' to load the declared moveable code segment
(FLASH_CODE) in RAM before execution.
5- By default the _fctcpy function is packaged in the Cosmic machine library,
so the function prototype ''int _fctcopy(char name);'' must be added in main.c
file.
Is it necessary to execute it from RAM?
How can i add this segement in the list and with which commands?
Could it look like this? (part out of lkf-file) I added this line by my own.
# Segment Ram:
+seg .data -b 0x100 -m 0x4ff -n .data
+seg .bss -a .data -n .bss
+seg .FLASH_CODE -a .data -n .FLASH_CODE -ic
#<END SEGMENT_CONF>
