This code example demonstrates the operation of the I2C resource in Deep Sleep mode. After programming, the application starts automatically. The UART terminal displays the slave initialization and the MCU entering Deep Sleep mode. Using the BCP software, send the command to wake the device up from Deep Sleep and display a wakeup message on the terminal.
Provide feedback on this code example.
- ModusToolbox™ v3.3 or later (tested with v3.3)
- Board support package (BSP) minimum required version for:
- KIT_PSC3M5_EVK: 1.0.3
- Programming language: C
- Associated parts: All PSOC™ Control C3 MCUs
- GNU Arm® Embedded Compiler v11.3.1 (
GCC_ARM) – Default value ofTOOLCHAIN - Arm® Compiler v6.22 (
ARM) - IAR C/C++ Compiler v9.50.2 (
IAR)
- PSOC™ Control C3M5 Evaluation Kit (
KIT_PSC3M5_EVK) – Default value ofTARGET
This example uses the kit’s default configuration. See the kit guide to ensure that the kit is configured correctly.
See the ModusToolbox™ tools package installation guide for information about installing and configuring the tools package. Install a terminal emulator if you don't have one. Instructions in this document use Tera Term.
This code example uses the Bridge Control Panel (BCP) software to transmit and receive the data over I2C. BCP is installed automatically as part of the PSoC™ Programmer installation.
Note: BCP is currently supported only on Windows.
Do the following to configure BCP:
-
Start BCP from Start > All Programs > Cypress > Bridge Control Panel > Bridge Control Panel.
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Select KitProg3 under Connected I2C/SPI/RX8 Ports (see Figure 1). Note that the kit must be connected to the USB port of your PC.
Figure 1. Bridge Control Panel
-
Select Tools > Protocol Configuration. Navigate to the I2C tab, set the I2C speed to 100 kHz, and click OK. BCP is now ready for transmitting and receiving data.
Figure 2. Protocol configuration
This example requires no additional software or tools.
The ModusToolbox™ tools package provides the Project Creator as both a GUI tool and a command line tool.
Use Project Creator GUI
-
Open the Project Creator GUI tool.
There are several ways to do this, including launching it from the dashboard or from inside the Eclipse IDE. For more details, see the Project Creator user guide (locally available at {ModusToolbox™ install directory}/tools_{version}/project-creator/docs/project-creator.pdf).
-
On the Choose Board Support Package (BSP) page, select a kit supported by this code example. See Supported kits.
Note: To use this code example for a kit not listed here, you may need to update the source files. If the kit does not have the required resources, the application may not work.
-
On the Select Application page:
a. Select the Applications(s) Root Path and the Target IDE.
Note: Depending on how you open the Project Creator tool, these fields may be pre-selected for you.
b. Select this code example from the list by enabling its check box.
Note: You can narrow the list of displayed examples by typing in the filter box.
c. (Optional) Change the suggested New Application Name and New BSP Name.
d. Click Create to complete the application creation process.
Use Project Creator CLI
The 'project-creator-cli' tool can be used to create applications from a CLI terminal or from within batch files or shell scripts. This tool is available in the {ModusToolbox™ install directory}/tools_{version}/project-creator/ directory.
Use a CLI terminal to invoke the 'project-creator-cli' tool. On Windows, use the command-line 'modus-shell' program provided in the ModusToolbox™ installation instead of a standard Windows command-line application. This shell provides access to all ModusToolbox™ tools. You can access it by typing "modus-shell" in the search box in the Windows menu. In Linux and macOS, you can use any terminal application.
The following example clones the "I2C Slave Deep Sleep Wakeup" application with the desired name "I2CSlaveDeepSleepWakeup" configured for the KIT_PSC3M5_EVK BSP into the specified working directory, C:/mtb_projects:
project-creator-cli --board-id KIT_PSC3M5_EVK --app-id mtb-example-ce240361-i2c-slave-deepsleep-wakeup --user-app-name I2CSlaveDeepSleepWakeup --target-dir "C:/mtb_projects"
The 'project-creator-cli' tool has the following arguments:
| Argument | Description | Required/optional |
|---|---|---|
--board-id |
Defined in the field of the BSP manifest | Required |
--app-id |
Defined in the field of the CE manifest | Required |
--target-dir |
Specify the directory in which the application is to be created if you prefer not to use the default current working directory | Optional |
--user-app-name |
Specify the name of the application if you prefer to have a name other than the example's default name | Optional |
Note: The project-creator-cli tool uses the
git cloneandmake getlibscommands to fetch the repository and import the required libraries. For details, see the "Project creator tools" section of the ModusToolbox™ tools package user guide (locally available at {ModusToolbox™ install directory}/docs_{version}/mtb_user_guide.pdf).
After the project has been created, you can open it in your preferred development environment.
Eclipse IDE
If you opened the Project Creator tool from the included Eclipse IDE, the project will open in Eclipse automatically.
For more details, see the Eclipse IDE for ModusToolbox™ user guide (locally available at {ModusToolbox™ install directory}/docs_{version}/mt_ide_user_guide.pdf).
Visual Studio (VS) Code
Launch VS Code manually, and then open the generated {project-name}.code-workspace file located in the project directory.
For more details, see the Visual Studio Code for ModusToolbox™ user guide (locally available at {ModusToolbox™ install directory}/docs_{version}/mt_vscode_user_guide.pdf).
Keil µVision
Double-click the generated {project-name}.cprj file to launch the Keil µVision IDE.
For more details, see the Keil µVision for ModusToolbox™ user guide (locally available at {ModusToolbox™ install directory}/docs_{version}/mt_uvision_user_guide.pdf).
IAR Embedded Workbench
Open IAR Embedded Workbench manually, and create a new project. Then select the generated {project-name}.ipcf file located in the project directory.
For more details, see the IAR Embedded Workbench for ModusToolbox™ user guide (locally available at {ModusToolbox™ install directory}/docs_{version}/mt_iar_user_guide.pdf).
Command line
If you prefer to use the CLI, open the appropriate terminal, and navigate to the project directory. On Windows, use the command-line 'modus-shell' program; on Linux and macOS, you can use any terminal application. From there, you can run various make commands.
For more details, see the ModusToolbox™ tools package user guide (locally available at {ModusToolbox™ install directory}/docs_{version}/mtb_user_guide.pdf).
-
Connect the board to your PC using the provided USB cable through the KitProg3 USB connector.
-
Open a terminal program and select the KitProg3 COM port. Set the serial port parameters to 8N1 and 115200 baud.
-
Program the board using one of the following:
Using Eclipse IDE
-
Select the application project in the Project Explorer.
-
In the Quick Panel, scroll down, and click <Application Name> Program (KitProg3_MiniProg4).
In other IDEs
Follow the instructions in your preferred IDE.
Using CLI
From the terminal, execute the
make programcommand to build and program the application using the default toolchain to the default target. The default toolchain is specified in the application's Makefile but you can override this value manually:make program TOOLCHAIN=<toolchain>Example:
make program TOOLCHAIN=GCC_ARM -
-
After programming, the application starts automatically. Confirm that the UART terminal displays the following:
Figure 1. Terminal output on program startup
-
Configure BCP as described in Software setup.
-
In the Editor tab of BCP, type the command to wake the device up from Deep Sleep, and click Send. Observe the Tera Term logs.
If BCP is used as the I2C master, the following command format is used to write the data to the slave.
Start for write Slave address Packet for interrupt w 0x08 0x00 For example, sending the
w 08 00command to wake the device up from Deep Sleep.Figure 2. Terminal output after successful connection
You can debug the example to step through the code.
In Eclipse IDE
Use the <Application Name> Debug (KitProg3_MiniProg4) configuration in the Quick Panel. For details, see the "Program and debug" section in the Eclipse IDE for ModusToolbox™ user guide.
In other IDEs
Follow the instructions in your preferred IDE.
The Arm® Cortex® CPU controls the slave EZI2C resource. The slave receives the packet from the Bridge Control Panel with the command to wake a device up from Deep Sleep mode to Active mode.
Table 1. Application resources
| Resource | Alias/object | Purpose |
|---|---|---|
| UART (HAL) | cy_retarget_io_uart_obj | UART HAL object used by Retarget-IO for the debug UART port |
| I2C (PDL) | DS_I2C | Slave I2C |
| Resources | Links |
|---|---|
| Application notes | AN238329 – Getting started with PSOC™ Control C3 MCU on ModusToolbox™ software |
| Code examples | Using ModusToolbox™ on GitHub |
| Device documentation | PSOC™ Control C3 MCU datasheet PSOC™ Control C3 technical reference manuals |
| Development kits | Select your kits from the Evaluation board finder. |
| Libraries on GitHub | mtb-pdl-cat1 – Peripheral Driver Library (PDL) mtb-hal-psc3 – Hardware Abstraction Layer (HAL) library retarget-io – Utility library to retarget STDIO messages to a UART port |
| Tools | ModusToolbox™ – ModusToolbox™ software is a collection of easy-to-use libraries and tools enabling rapid development with Infineon MCUs for applications ranging from wireless and cloud-connected systems, edge AI/ML, embedded sense and control, to wired USB connectivity using PSoC™ Industrial/IoT MCUs, AIROC™ Wi-Fi and Bluetooth® connectivity devices, XMC™ Industrial MCUs, and EZ-USB™/EZ-PD™ wired connectivity controllers. ModusToolbox™ incorporates a comprehensive set of BSPs, HAL, libraries, configuration tools, and provides support for industry-standard IDEs to fast-track your embedded application development. |
Infineon provides a wealth of data at www.infineon.com to help you select the right device, and quickly and effectively integrate it into your design.
Document title: CE240361 – PSoC™ Control MCU: I2C slave Deep Sleep wakeup
| Version | Description of change |
|---|---|
| 1.0.0 | New code example |
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