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Espressif Systems 2e89983282 feat(system): Provide more heap region (16KB+)
1. Change cache size from 32KB to 16KB, reverse this 16KB region as heap;
2. New heap to support seperate heap region;
3. Modify pvPortMalloc, support to choose malloc in iram;
4. Add new macro os_malloc_iram to malloc in iram;
5. Default malloc will malloc in iram firstly;

Limitation:
1. Don't malloc task stack in iram;
2. Dont't use iram buffer as wifi tx buffer;

If possible, use all of iram heap region firstly.

internal : 2d3fbebb
2017-12-08 14:02:57 +08:00
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