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Update Qemu page #146

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Update Qemu page #146

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Update Qemu page
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8 changes: 5 additions & 3 deletions src/tooling/simulating/qemu.md
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@@ -1,12 +1,12 @@
# QEMU

Espressif maintains a fork of QEMU in [espressif/QEMU][espressif-qemu] with the necessary patches to make it work on Espressif chips.
See the [QEMU wiki][qemu-wiki] for instructions on how to build QEMU and emulate projects with it.
See the [ESP-specific instructions for running QEMU][esp-qemu-doc] for instructions on how to build QEMU and emulate projects with it.

Once you have built QEMU, you should have the `qemu-system-xtensa` file.

[espressif-qemu]: https://github.com/espressif/qemu
[qemu-wiki]: https://github.com/espressif/qemu/wiki
[esp-qemu-doc]: https://github.com/espressif/esp-toolchain-docs/tree/main/qemu/esp32#overview

## Running Your Project Using QEMU

Expand All @@ -20,12 +20,14 @@ cargo espflash save-image --chip esp32 --merge <OUTFILE> --release
```

If you prefer to use [`espflash`][espflash], you can achieve the same result by building the project first and then generating image:

```shell
cargo build --release
espflash save-image --merge ESP32 target/xtensa-esp32-espidf/release/<NAME> <OUTFILE>
espflash save-image --chip ESP32 --merge target/xtensa-esp32-espidf/release/<NAME> <OUTFILE>
```

Now, run the image in QEMU:

```shell
/path/to/qemu-system-xtensa -nographic -machine esp32 -drive file=<OUTFILE>,if=mtd,format=raw
```
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