Previously psram driver was in esp_hw_support, which is a common
requirement(when in non-bootloader build). So when building
idf_as_lib (on esp32), the mfix-esp32-psram-cache-issue flag
will always be added (when CONFIG_SPIRAM_CACHE_WORKAROUND is on).
As psram driver is moved to esp_psram component, and esp_psram
is added via idf_component_optional_requires, which is a "weak"
dependency. You need to include esp_psram compoennt explicitly
if psram will be in use.
As idf_as_lib doesn't need psram, this test can be removed.
1. Since the baud rate in the ROM cannot be changed,
set the default baud rate of the 26Mhz version
of esp32c2 to 74800
2. Since the systimer configuration of the 26Mhz
version requires a non-integer systimer frequency
configuration, and this feature is not supported
in the current ROM, this option is disabled for
the 26Mhz version esp32c2
XTAL_CLK_FREQ now depends on the actual XTAL used, remove this macro
and get the XTAL frequency from the RTC register instead.
No uses of XTAL_CLK_FREQ found, other than in the UART LL.
When ESP32-C2 is paired with a 26 MHz XTAL, the systimer tick
frequency becomes equal to 26 / 2.5 = 10.4 MHz. Previously we always
assumed that systimer tick frequency is integer (and 1 MHz * power of
two, above that!).
This commit introduces a new LL macro, SYSTIMER_LL_TICKS_PER_US_DIV.
It should be set in such a way that:
1. SYSTIMER_LL_TICKS_PER_US / SYSTIMER_LL_TICKS_PER_US_DIV equals the
actual systimer tick frequency,
2. and SYSTIMER_LL_TICKS_PER_US is integer.
For ESP32-C2 this means that SYSTIMER_LL_TICKS_PER_US = 52 and
SYSTIMER_LL_TICKS_PER_US_DIV = 5.
This introduced two possible issues:
1. Overflow when multiplying systimer counter by 5
- Should not be an issue, since systimer counter is 52-bit, so
counter * 5 is no more than 55-bit.
2. The code needs to perform:
- divide by 5: when converting from microseconds to ticks
- divide by 52: when converting from ticks to microseconds
The latter potentially introduces a performance issue for the
esp_timer_get_time function.
esp-ringbuf funtion placement is now controlled by its own configs:
CONFIG_RINGBUF_PLACE_FUNCTIONS_INTO_FLASH and CONFIG_RINGBUF_PLACE_ISR_FUNCTIONS_INTO_FLASH
Closes https://github.com/espressif/esp-idf/issues/9198
Some users have requested this feature.
In order to avoid complete refactoring or introducing more code complexity, a design choice to create temporary files without blank lines is made.
Additionally, an extension check is added and there are multiple smaller code style and structure improvements.
Closes https://github.com/espressif/esp-idf/issues/8421
component_bt: Fix wifi is initialized before bluetooth initialization, bluetooth can't stay connected
Closes BCI-303
See merge request espressif/esp-idf!18643
Some esp32c2 boards will be produced with a 26 MHz XTAL. This commit
adds the basic Kconfig option for this type of hardware.
Support for CONFIG_ESP32C2_XTAL_FREQ_26 in other areas of IDF will be
implemented in subsequent commits.
