Hi!
I'm using the section attribute on variables that are supposed to be
stored in an external eeprom:
#define EEPROMEXT __attribute__((section(".eeprom_ext")))
uint8_t EEPROMEXT outputs;
In the Makefile I set the starting address for that section:
LDFLAGS += -Wl,--section-start=.eeprom_ext=0x400000
Until now everithing is working ok.
The problem arises when I define another variable in another unit (*.c file):
uint8_t EEPROMEXT inputs;
I have a *.map file with:
.eeprom_ext 0x0000000000400000 0x166f
.eeprom_ext 0x0000000000400000 0x166f main.o
0x0000000000400000 outputs
.eeprom_ext.1 0x00000000008005fc 0x19c8 load address
0x000000000001e1f2
.eeprom_ext 0x00000000008005fc 0x19c8 sec.o
0x00000000008005fc inputs
If I change units order the Makefile (sec.o main.o instead of main.o
sec.o), inputs is assigned to .eeprom_ext and outputs to eeprom_ext.1.
The address of .eeprom_ext.1 (0x00000000008005fc) is the same as the
beginning of .bss section.
I assume this is a linker issue.
What should I change so that outputs and inputs variables stay in the
same .eeprom_ext section, but being in different units (*.c files)?
Thanks.
Roy
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