Because I chose the STM32 film purely as a dot matrix LCD program, the defined global variable array will explode the data area, and the hardware error will be reported directly when it is started.
After looking at the .s startup file, only the stack space and heap space are configured. Where is the configuration of the global variable static data area? I didn't find it, how to modify it and increase it, the default is how big it is, there is no information at all.
Melinda Posté sur December 3, 2020
How big is the array?
Franco Posté sur December 3, 2020
No statistics, there are fonts, arrays of various page types. In short, there is not enough space in the static data area. I can solve it by putting the data in the heap, but I don’t want to do that. Does anyone know where the memory size of this section is configured? ? ! !
Chace Posté sur December 3, 2020
Isn't the font library generally placed in flash, defined as const type.
Marin Posté sur December 3, 2020
Define the font and picture classes as const types and put them in the rom area.
The constant type refers to the type specified by the type modifier const, and the value of the variable or object of the constant type cannot be updated. Therefore, initialization must be performed when defining or describing the constant type.
