3 commits

Author	SHA1	Message	Date
Wangjialin	cea7dfbe90	psram: improve clock signal generation, increase drive strength ... Also check the chip type when initializing.	2017-11-03 16:30:10 +08:00
Jeroen Domburg	6d95934a3c	Make 80MHz PSRAM work as well, add testcase for weirdness reported on esp32 forums, clean up unused define in psram code	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