Fixed missing section for Raspberry Pi Pico
Summary
Add a missing section to the embedded linkerscript
System
- Operating system:
- ARM
- Microcontroller
What is the current bug behavior?
I am using heapmgr but with trunk compiler the value of __heapsize is plain wrong (and way too big)
When I compile my code with my old compiler for pico all is fine, when I debug into heapmgr I see that __heapsize is set correctly to 16384 based on this setting:
program spi_st7789; {$MODE OBJFPC} {$H+} {$MEMORY 16384,16384}
When I use current main compiler the value is 308528 which is more than available memory, this is why I found the issue....
The reason for this is that a line from my original code for linkerfile generation was not included:
Add(' *(.data .data.*)');
// Special Section for the Raspberry Pico, needed for linking to spi
Add(' *(.time_critical*)');
Add(' KEEP (*(.fpc .fpc.n_version .fpc.n_links))');
Add(' _edata = .;');
and for that reason the content of that section in loaded to start of flash (and during startup to ram) instead of the correct data for __heapsize
What is the behavior after applying this patch?
No more HardFault because of access of non existent memory