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Update entry on building program in workbook
This change updates the information on "Building an Embedded Program". There is a mismatch between the described target `thumbv7em-none-eabi` compared to the set target in file `beginner/apps/.cargo/config` that contains target entry `thumbv7em-none-eabihf`.
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@ -5,7 +5,7 @@ The default in a Cargo project is to compile for the host (native compilation).
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``` text
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# .cargo/config
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[build]
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target = "thumbv7em-none-eabi" # = ARM Cortex-M4
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target = "thumbv7em-none-eabihf" # = ARM Cortex-M4
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```
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✅ Inside the folder `beginner/apps`, use the following command to cross compile the program to the ARM Cortex-M4 architecture.
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@ -14,12 +14,12 @@ target = "thumbv7em-none-eabi" # = ARM Cortex-M4
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$ cargo build --bin hello
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```
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The output of the compilation process will be an ELF (Executable and Linkable Format) file. The file will be placed in the `target/thumbv7em-none-eabi` directory.
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The output of the compilation process will be an ELF (Executable and Linkable Format) file. The file will be placed in the `target/thumbv7em-none-eabihf` directory.
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✅ Run `$ file target/thumbv7em-none-eabi/debug/hello` and compare if your output is as expected.
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✅ Run `$ file target/thumbv7em-none-eabihf/debug/hello` and compare if your output is as expected.
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Expected output:
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``` console
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$ file target/thumbv7em-none-eabi/debug/hello
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$ file target/thumbv7em-none-eabihf/debug/hello
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hello: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), statically linked, with debug_info, not stripped
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```
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