wip: zephyr wifi presentation

Signed-off-by: Pawel Langowski <[email protected]>

Author: PLangowski

img/lpc.jpg

@@ -0,0 +1,167 @@
+---
+theme: ../slidev-template/theme
+layout: cover
+background: /intro.png
+class: text-center
+---
+
+##  Running demo Wi-Fi Zephyr application inside the CROSSCON Hypervisor
+
+<center>
+    <img src="/../img/zarhus_logo.png" width="150px"
+         style="margin-left:-20px;filter: invert(1);">
+</center>
+
+---
+
+## Who am I?
+
+<div class="grid grid-cols-2 gap-8">
+
+<div>
+
+**Paweł Langowski**
+
+_Junior Embedded Systems Engineer_
+
+_member of the **Zarhus** team_
+
+- <[email protected]>
+- [3mdeb.com](https://3mdeb.com)
+
+</div>
+
+<div class="flex justify-center items-center">
+  <img src="/../img/zarhus_logo.png" height="220px" style="filter: invert(1)"/>
+</div>
+
+</div>
+
+---
+
+## Agenda
+
+<v-clicks>
+
+- Introduction
+- Prerequisites
+- Implementation
+- Demo
+- Conclusion
+
+</v-clicks>
+
+<!--
+* The agenda of the presentation
+* First I will introduce the topic and explain the goal of the task
+* Then I will talk about the hardware and software used to achieve this goal
+* Next I will explain how the task was implemented
+* Afterwards, I will show you a quick demo
+* I will end the presentation with conclusions
+-->
+
+---
+
+## Introduction
+
+### What is crosscon?
+
+<center><img src="/../img/crosscon-logo-2.png" width="200px"></center>
+
+---
+
+
+## Introduction
+
+### Goal of the task
+
+- Run a Zephyr application inside a VM on the CROSSCON Hypervisor
+- The Zephyr application connects to a Wi-Fi network
+
+<!--
+* The goal of our task was to run a Zephyr app inside a virtual machine within
+the CROSSCON Hypervisor
+* The Zephyr application scans for available Wi-Fi access points and connects to
+a specified hotspot.
+-->
+
+---
+
+## Prerequisites
+
+### [LPCXPRESSO55S69](https://docs.zephyrproject.org/latest/boards/nxp/lpcxpresso55s69/doc/index.html)
+
+<img src="/../img/lpc.jpg" width="350px" align="right">
+
+- LPC55S69 dual core Arm Cortex-M33 microcontroller
+- MikroEletronika Click expansion
+
+---
+
+## Prerequisites
+
+### [MikroElektronika WIFI and BLE Shield](https://docs.zephyrproject.org/latest/boards/shields/mikroe_wifi_bt_click/doc/index.html)
+
+<img src="/../img/wifi_click.jpg" width="300px" align="right">
+
+- Wi-Fi and Bluetooth
+- Uses the standard MikroBus interface with UART pins
+
+
+### Software
+
+- Zephyr OS
+- Baremetal Wi-Fi application
+- Bao Hypervisor
+
+---
+
+## Implementation
+
+- VM entry point had to be 
+- Discovering devices and interfaces that were used by the application and its
+libraries
+
+After enabling `CONFIG_NETWORKING`:
+
+```diff
+1301a1505,1506
+> CONFIG_ENTROPY_DEVICE_RANDOM_GENERATOR=y
+> # CONFIG_XOSHIRO_RANDOM_GENERATOR is not set
+1302a1508,1510
+> CONFIG_CSPRNG_ENABLED=y
+> CONFIG_HARDWARE_DEVICE_CS_GENERATOR=y
+> # CONFIG_CTR_DRBG_CSPRNG_GENERATOR is not set
+```
+
+Access to the random number generator had to be granted to the VM.
+
+---
+
+## Implementation
+
+Hypervisor config:
+
+```c
+@@ -102,6 +102,12 @@ struct config config = {
++                    {
++                        /* RNG */
++                        .pa = 0x4003a000,
++                        .va = 0x4003a000,
++                        .size = 0x1000,
++                    },
+                 },
+                 .ipc_num = 1,
+                 .ipcs = (struct ipc[]) {
+```
+
+- Granting access to required flash regions
+
+The program failed to call the `memset` function. It turned out that the flash
+memory region, where `memset` was defined was outside the scope assigned to the
+VM. The flash size had to be increased.
+
+---
+
+- UART conflict
+