The Simple Boot feature for Espressif chips is a method of booting
that doesn't depend on a 2nd stage bootloader. Its not the
intention to replace a 2nd stage bootloader such as MCUboot and
ESP-IDF bootloader, but to have a minimal and straight-forward way
of booting, and also simplify the building.
This commit also removes deprecated code and makes this bootloader
configuration as default for esp32s2 targets and removes the need
for running 'make bootloader' command for it.
Signed-off-by: Almir Okato <almir.okato@espressif.com>
This driver is used with QEMU, to make it possible
to use networking.
This is not the MAC in ESP32, however, it can be used with QEMU.
The code was shamelessly copied from 31dac92e5f
Enable with ./tools/configure.sh -l esp32-devkitc:dac
DAC channel 0 = GPIO 25
DAC channel 1 = GPIO 26
default path: /dev/dac0
Resolution 8 bits = values 0~255
Voltage: 0~Vref
The reference voltage 'Vref' here is input from the pin VDD3P3_RTC
which ideally equals to the power supply VDD (3.3V).
- migrated /README are removed from /boards
- there are a lot of READMEs that should be further converted to rst.
At the moment they are moved to Documentation/platforms and included in rst files
Adds support for the ES8311 codec on the ESP32-S2-Kaluga-1 board. This commit also adds basic configurations for testing and updates the board documentation.
Added examples of using the RTP Tools (`rtpdump`, in particular)
to receive RTP packets and 1) print the data and/or 2) playback
audio content through I2S.
This commit adds support to Ai-Thinker ESP32 Audio Kit V2.2 A247
board.
There are two modules of this board. The old model uses AC101 audio
and is not supported currently (AFAIK there is no AC101 driver) and
the new version uses the ES8388 audio codec. This model is supported
by this commit.
Just read the documentation to test playing an audio file.
TODO: Test audio recording.
Restore some openocd information which I occassionally need.
This is a partial revert of:
```
commit 58a5e0744b
Author: Abdelatif Guettouche <abdelatif.guettouche@espressif.com>
Date: Mon Jul 26 21:43:42 2021 +0200
Documentation/esp32: Remove the rest of the OpenOCD text.
This information there is outdated and some of its content should be in
the board documentation and not the chip.
Signed-off-by: Abdelatif Guettouche <abdelatif.guettouche@espressif.com>
```
documentation: Fixed typos in ESP32 Secure Boot section
documentation/esp32: Improved note about the MCUboot port
documentation/esp32: Improved instructions in Secure Boot section
documentation/esp32: Fix information in Secure Boot section
documentation/esp32: Added info in Secure Boot section
documentation/esp32: Fix Secure Boot Instructions
Multiple files were badly formatted, which resulted in many
warnings. This made it harder to check for errors in newly
written documentation.
What's worse, badly formatted text resulted in butchered
output in generated html.
This patch fixes most of the errors, but alas, not all of
the errors can be fixed. Anyway, this should be way easier
to spot errors in newly written docs now.
Signed-off-by: Michał Łyszczek <michal.lyszczek@bofc.pl>
1. Issues regarding caching: The ESP32 has no D-Cache and thus the
issues described there do not apply.
2. Issue regarding assertion: No chip does this at the moment.
Signed-off-by: Abdelatif Guettouche <abdelatif.guettouche@espressif.com>
