hod3 working, now to hod4

hod4_uart/.gitignore

@@ -0,0 +1,22 @@
+.build
+.mbed
+projectfiles
+*.py*
+
+# Local build directories
+cmake_build/
+BUILD/
+mbed-os/
+.mbed/
+.mbedignore
+*.elf
+*.bin
+*.hex
+*.map
+
+# IDE and temporary files
+.vscode/
+.idea/
+*.log
+*.pyc
+__pycache__/

hod4_uart/CMakeLists.txt

@@ -0,0 +1,33 @@
+# Copyright (c) 2020 ARM Limited. All rights reserved.
+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.19.0 FATAL_ERROR)
+
+set(MBED_PATH ${CMAKE_CURRENT_SOURCE_DIR}/mbed-os CACHE INTERNAL "")
+set(MBED_CONFIG_PATH ${CMAKE_CURRENT_BINARY_DIR} CACHE INTERNAL "")
+set(APP_TARGET mbed-os-example-blinky)
+
+include(${MBED_PATH}/tools/cmake/app.cmake)
+
+project(${APP_TARGET})
+
+add_subdirectory(${MBED_PATH})
+
+add_executable(${APP_TARGET})
+
+target_sources(${APP_TARGET}
+    PRIVATE
+        main.cpp
+)
+
+target_link_libraries(${APP_TARGET}
+    PRIVATE
+        mbed-os
+)
+
+mbed_set_post_build(${APP_TARGET})
+
+option(VERBOSE_BUILD "Have a verbose build process")
+if(VERBOSE_BUILD)
+    set(CMAKE_VERBOSE_MAKEFILE ON)
+endif()

hod4_uart/CONTRIBUTING.md

@@ -0,0 +1,5 @@
+# Contributing to Mbed OS
+
+Mbed OS is an open-source, device software platform for the Internet of Things. Contributions are an important part of the platform, and our goal is to make it as simple as possible to become a contributor.
+
+To encourage productive collaboration, as well as robust, consistent and maintainable code, we have a set of guidelines for [contributing to Mbed OS](https://os.mbed.com/docs/mbed-os/latest/contributing/index.html).

hod4_uart/LICENSE

@@ -0,0 +1,165 @@
+Apache License
+Version 2.0, January 2004
+http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
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+8. Limitation of Liability.
+
+In no event and under no legal theory, whether in tort (including negligence),
+contract, or otherwise, unless required by applicable law (such as deliberate
+and grossly negligent acts) or agreed to in writing, shall any Contributor be
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+damages for loss of goodwill, work stoppage, computer failure or malfunction, or
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+9. Accepting Warranty or Additional Liability.
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+incurred by, or claims asserted against, such Contributor by reason of your
+accepting any such warranty or additional liability.

hod4_uart/README.md

@@ -0,0 +1,73 @@
+![](./resources/official_armmbed_example_badge.png)
+# Blinky Mbed OS example
+
+The example project is part of the [Arm Mbed OS Official Examples](https://os.mbed.com/code/) and is the [getting started example for Mbed OS](https://os.mbed.com/docs/mbed-os/latest/quick-start/index.html). It contains an application that repeatedly blinks an LED on supported [Mbed boards](https://os.mbed.com/platforms/).
+
+You can build the project with all supported [Mbed OS build tools](https://os.mbed.com/docs/mbed-os/latest/tools/index.html). However, this example project specifically refers to the command-line interface tools, [Arm Mbed CLI 1](https://github.com/ARMmbed/mbed-cli#installing-mbed-cli) and [Mbed CLI 2](https://github.com/ARMmbed/mbed-tools#installation).
+
+(Note: To see a rendered example you can import into the Arm Online Compiler, please see our [import quick start](https://os.mbed.com/docs/mbed-os/latest/quick-start/online-with-the-online-compiler.html#importing-the-code).)
+
+## Mbed OS build tools
+
+### Mbed CLI 2
+Starting with version 6.5, Mbed OS uses Mbed CLI 2. It uses Ninja as a build system, and CMake to generate the build environment and manage the build process in a compiler-independent manner. If you are working with Mbed OS version prior to 6.5 then check the section [Mbed CLI 1](#mbed-cli-1).
+1. [Install Mbed CLI 2](https://os.mbed.com/docs/mbed-os/latest/build-tools/install-or-upgrade.html).
+1. From the command-line, import the example: `mbed-tools import mbed-os-example-blinky`
+1. Change the current directory to where the project was imported.
+
+### Mbed CLI 1
+1. [Install Mbed CLI 1](https://os.mbed.com/docs/mbed-os/latest/quick-start/offline-with-mbed-cli.html).
+1. From the command-line, import the example: `mbed import mbed-os-example-blinky`
+1. Change the current directory to where the project was imported.
+
+## Application functionality
+
+The `main()` function is the single thread in the application. It toggles the state of a digital output connected to an LED on the board.
+
+**Note**: This example requires a target with RTOS support, i.e. one with `rtos` declared in `supported_application_profiles` in `targets/targets.json` in [mbed-os](https://github.com/ARMmbed/mbed-os). For non-RTOS targets (usually with small memory sizes), please use [mbed-os-example-blinky-baremetal](https://github.com/ARMmbed/mbed-os-example-blinky-baremetal) instead.
+
+## Building and running
+
+1. Connect a USB cable between the USB port on the board and the host computer.
+1. Run the following command to build the example project and program the microcontroller flash memory:
+
+    * Mbed CLI 2
+
+    ```bash
+    $ mbed-tools compile -m <TARGET> -t <TOOLCHAIN> --flash
+    ```
+
+    * Mbed CLI 1
+
+    ```bash
+    $ mbed compile -m <TARGET> -t <TOOLCHAIN> --flash
+    ```
+
+Your PC may take a few minutes to compile your code.
+
+The binary is located at:
+* **Mbed CLI 2** - `./cmake_build/<TARGET>/develop/<TOOLCHAIN>/mbed-os-example-blinky.bin`
+* **Mbed CLI 1** - `./BUILD/<TARGET>/<TOOLCHAIN>/mbed-os-example-blinky.bin`
+
+Alternatively, you can manually copy the binary to the board, which you mount on the host computer over USB.
+
+## Expected output
+The LED on your target turns on and off every 500 milliseconds.
+
+
+## Troubleshooting
+If you have problems, you can review the [documentation](https://os.mbed.com/docs/latest/tutorials/debugging.html) for suggestions on what could be wrong and how to fix it.
+
+## Related Links
+
+* [Mbed OS Stats API](https://os.mbed.com/docs/latest/apis/mbed-statistics.html).
+* [Mbed OS Configuration](https://os.mbed.com/docs/latest/reference/configuration.html).
+* [Mbed OS Serial Communication](https://os.mbed.com/docs/latest/tutorials/serial-communication.html).
+* [Mbed OS bare metal](https://os.mbed.com/docs/mbed-os/latest/reference/mbed-os-bare-metal.html).
+* [Mbed boards](https://os.mbed.com/platforms/).
+
+### License and contributions
+
+The software is provided under Apache-2.0 license. Contributions to this project are accepted under the same license. Please see [CONTRIBUTING.md](./CONTRIBUTING.md) for more info.
+
+This project contains code from other projects. The original license text is included in those source files. They must comply with our license guide.

hod4_uart/main.cpp

@@ -0,0 +1,44 @@
+// main.cpp
+#include "mbed.h"
+
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+DigitalOut led3(LED3);
+DigitalIn  button(PC_13);
+
+int another_press(int press_num) {
+    press_num += 1;
+    if (press_num >= 8) {
+        press_num = 0;
+    };
+
+    return press_num;
+}
+
+void set_led(int number) {
+    led1 = (number & 1) ? 1 : 0;
+    led2 = (number & 2) ? 1 : 0;
+    led3 = (number & 4) ? 1 : 0;
+}
+
+int main()
+{
+
+    int num_presses = 0;
+    while (true) {
+        led1 = 0;
+        led2 = 0;
+        led3 = 0;
+
+        if (button == 0) {
+          num_presses = another_press(num_presses);
+          set_led(num_presses);
+
+          while (button == 0) {
+            ThisThread::sleep_for(10ms);
+          }
+        }
+
+        ThisThread::sleep_for(150ms);
+    }
+}

hod4_uart/mbed-os.lib

@@ -0,0 +1 @@
+https://github.com/ARMmbed/mbed-os/#17dc3dc2e6e2817a8bd3df62f38583319f0e4fed

mbed_ledky2/main.cpp

@@ -16,15 +16,9 @@ int another_press(int press_num) {
 }
 
 void set_led(int number) {
-    if ((number & 1) == 1){
-        led1 = 1;
-    }
-    else if ((number & 2) == 2){
-        led2 = 1;
-    }
-    else if ((number & 3) == 4){
-        led3 = 1;
-    }
+    led1 = (number & 1) ? 1 : 0;
+    led2 = (number & 2) ? 1 : 0;
+    led3 = (number & 4) ? 1 : 0;
 }
 
 int main()

pwm_led2/main.cpp

@@ -16,15 +16,9 @@ int another_press(int press_num) {
 }
 
 void set_led(int number) {
-    if ((number & 1) == 1){
-        led1 = 1;
-    }
-    else if ((number & 2) == 2){
-        led2 = 1;
-    }
-    else if ((number & 3) == 3){
-        led3 = 1;
-    }
+    led1 = (number & 1) ? 1 : 0;
+    led2 = (number & 2) ? 1 : 0;
+    led3 = (number & 4) ? 1 : 0;
 }
 
 int main()