Merge pull request #58 from ajamtli/embedded-setup-troubleshooting

Add paragraph to general troubleshooting guide

Author: BartMassey

mdbook/src/appendix/1-general-troubleshooting/README.md

@@ -52,3 +52,29 @@ Install the proper target.
 ``` console
 $ rustup target add thumbv7em-none-eabihf
 ```
+
+### Unable to flash the device: `No loadable segments were found in the ELF file`
+
+*Symptoms:*
+```console
+> cargo embed
+    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.04s
+      Config default
+      Target /home/user/embedded/target/thumbv7em-none-eabihf/debug/examples/init
+ WARN probe_rs::flashing::loader: No loadable segments were found in the ELF file.
+       Error No loadable segments were found in the ELF file.
+```
+
+*Cause:*
+
+Cargo needs to know how to build and link the program to the requirements of the target device.
+You therefore need to set the correct parameters in the `.cargo/config.toml` file.
+
+*Fix:*
+
+Add a `.cargo/config.toml` file with the correct parameters:
+```toml
+{{#include ../../05-meet-your-software/.cargo/config.toml}}
+```
+
+See [Embedded Setup](../../05-meet-your-software/embedded-setup.md) for further details.