Commit Graph

10 Commits

Author SHA1 Message Date
Angus Gratton
c4ed9d15f7 heap: Drop priority of DMA reserved memory pool
Ensures that non-reserved memory should be used up first, before allocating from this pool.
2018-08-30 06:18:18 +00:00
Angus Gratton
4f227a4ce3 Merge branch 'bugfix/spiram_malloc_reserve_internal_fragments' into 'master'
esp32: Allow SPIRAM_MALLOC_RESERVE_INTERNAL to span multiple regions of memory

See merge request idf/esp-idf!2891
2018-08-16 11:19:39 +08:00
Angus Gratton
304e9085eb esp32: Allow SPIRAM_MALLOC_RESERVE_INTERNAL to span multiple regions of memory
- Allocate this pool after main_task is running, so it can use startup stack RAM
- Raise the maximum allowed value in KConfig to 256KB
- Based on forum discussions https://esp32.com/viewtopic.php?f=2&t=6550&sid=76cd27bda76c6d0e83d3fcc9ec30c650&start=10#p28253
2018-07-31 15:17:07 +10:00
Wangjialin
6e9c59bfc3 feature(psram): add support for 64MBit psram of 1.8v and 3.3v.
1. Add reading psram EID.
2. Configure different clock mode for different EID.
3. add API to get psram size and voltage.
4. Remove unnecessary VSPI claim.

For 32MBit@1.8V and 64MBit@3.3V psram, there should be 2 extra clock cycles after CS get high level.
For 64MBit@1.8 psram, we can just use standard SPI protocol to drive the psram. We also need to increase the HOLD time for CS in this case.

EID for psram:
32MBit 1.8v: 0x20
64MBit 1.8v: 0x26
64MBit 3.3v: 0x46
2018-07-10 14:24:59 +08:00
Jeroen Domburg
dc864c4108 Add option to continue running (with less ram) if psram is enabled but not detected 2018-02-12 13:44:11 +08:00
Ivan Grokhotkov
90bbcbcdc0 unit tests: fix warnings, build with -Werror
- libsodium: silence warnings
- unit tests: fix warnings
- spiram: fix warnings
- ringbuf test: enable by default, reduce delays
2017-10-19 21:35:23 +08:00
Ivan Grokhotkov
1da3204a7c spiram: expose function to initialize SPI RAM cache
Some frameworks based on ESP-IDF need to be able to decide whether to
initialize SPI RAM after the application has started. This change splits
out part of esp_spiram_init which manipulate cache MMU into a separate
function. Applications can disable cache, call esp_spiram_init_cache,
re-enable cache, and then call esp_spiram_init.
Disabling and re-enabling the cache can be achieved using functions
provided in esp_spi_flash.h.
2017-10-16 09:15:11 +08:00
Jeroen Domburg
740f8a79f0 Add logic to make external RAM usable with malloc() 2017-09-28 17:17:50 +08:00
Jeroen Domburg
875ae6a134 Add option to allocate external RAM using heap_alloc_caps 2017-09-14 10:47:44 +08:00
Jeroen Domburg
34372a091c Add initial SPI RAM support. This adds support for an ESP-PSRAM32 chip connected to the default flash pins and GPIO 16 and 17. The RAM is mapped to address 0x3F800000, but otherwise ignored by esp-idf as of yet. 2017-09-04 12:05:49 +08:00