This file is an excerpt of STM32 header file `stm32/smsis/f7/include/stm32f767xx.h` since the ESP32x SoCs use the same Synopsys DWC2 IP core as USB peripherals.
Module `esp_idf_nvs_flash` uses C++ code. Since `esp_idf_nvs_flash` module is always enabled on ESP8266, the permanent dependency on `cpp` is correct. But on ESP32, the `esp_idf_nvs_flash` module is only enabled if `esp_wifi_any` is used. Only in that case the compilation should depend on module `cpp`.
With the change from using archive files to using object files in PR #14754, the module `esp_wifi_enterprise` was no longer compilable. The reason for this was that the file `bignum.c` was present in two different vendor sub-directories and created two identical object files, which then led to a symbol conflict when linking. This commit removes one of these identical files. The one that is used in all `esp_wifi` variants is kept, the one that is only used in `esp_wifi_enterprise` is dropped.
If esp_idf_heap is not used, implement calloc through a custom wrapper
function on top of malloc to add overflow detection, which is not
present in the newlib forks with xtensa support yet.
To control the log level and the format of the log output of SDK libraries, a bunch of library-specific printf functions are realized which map the log output from SDK libraries to RIOT's log macros.
Log outputs generated by binary ESP32 SDK libraries are mapped to the ESP32's log module which supports colored and tagged log outpus. Tagged log outputs from SDK libraries are handled accordingly.
Renames crypto functions of ESP32 SDK in vendor code to resolve the conflicts between `wpa-supplicant` crypto functions and RIOT's `crypto` and `hashes` modules.
To resolve the conflicts between `wpa-supplicant` crypto functions (part of the ESP32 SDK) and RIOT's `crypto` and `hashes` modules, the crypto function headers from ESP32 SDK are added to vendor code and the crypto functions are renamed using the prefix `wpa_`.
Initializing the stdio file descriptors in global reent structure with newlib fake stdio file descriptors led to the problem that newlib stdio functions printf and puts were not working since they can't operate on these fake stdio file descriptors. Therefore, this initialization was removed. Now, the real stdio file descriptors as created automatically by newlib are used. Specific functions `printf`, `puts`, `getchar`and `putchar` are not required any longer and are removed now.
