| # RH850/F1K and F1Kx FreeRTOS Port with CC-RH Compiler |
| |
| ## Introduction |
| |
| This repository contains the port of FreeRTOS for Renesas RH850/F1K and F1Kx microcontrollers using the CC-RH compiler. The following sections provide instructions on how to use this port, a link to the test project, and other relevant information. |
| |
| ## Prerequisites |
| - Compiler: CC-RH |
| - FreeRTOS version 11.1.0 |
| |
| | Device | FPU | SMP | |
| |----------|-----|-----| |
| | F1K | Yes | No | |
| | F1KM-S1 | Yes | No | |
| | F1KM-S2 | Yes | No | |
| | F1KM-S4 | Yes | No | |
| | F1KH-D8 | Yes | Yes | |
| |
| ## Link to Test Project |
| |
| The test project can be found [here](https://github.com/FreeRTOS/FreeRTOS-Community-Supported-Demos) (`RH850_F1Kx_CCRH`). This project contains example tasks and configurations to help you get started with FreeRTOS on the RH850/F1K and F1Kx. |
| |
| ## Note |
| 1. Configure IPIR Interrupt: Ensure that the bit specifying the destination for binding (requesting) an interrupt is enabled (e.g: IBDxxx register of F1KH-D8) (1) |
| 2. `Channel 0` and address `0xFFFEEC00` are used as default configuration for configIPIR_CHANNEL and configEXCLUSIVE_ADDRESS, in case of resource confliction other channel/address can be used. (2) |
| 3. The minimal stack size (configMINIMAL_STACK_SIZE) must be included the reserved memory for nested interrupt. This formula can be referred: `(task_context_size) * (1 + configMAX_INT_NESTING) + Stack_depth_of_taskcode` |
| In which, `task_context_size` is calculated as `36*4bytes = 144bytes` (when FPU enabled) or `34*4bytes = 136` (when FPU disabled), configMAX_INT_NESTING is 02 as default. |
| 4. `configTIMER_PRESCALE`: This value is required in order to correctly configure clock for `CPUCLK_L`. Refer to Hardware Manual at `Table 44.22` for `option byte`: If the user sets the option byte `CKDIVMD to 1`, then `configTIMER_PRESCALE = 4`. Otherwise, if `CKDIVMD is set to 0`, then `configTIMER_PRESCALE = 2`. |
| |
| (1) This is applicable for F1KH-D8 with SMP only. |
| |
| (2) This is optional and applicable for SMP only. |
| |
| ## Other Relevant Information |
| |
| - **Documentation:** |
| - Refer to the official [FreeRTOS documentation](https://www.freertos.org/Documentation/RTOS_book.html) for detailed information on configuring and using FreeRTOS. |
| - Consult the [RH850 F1K group user manual hardware manual](https://www.renesas.com/us/en/document/mah/rh850f1k-group-users-manual-hardware?r=1170166) for specific details about the microcontroller. |
| - For more information about Renesas RH850/F1K and F1Kx, please visit [this website](https://www.renesas.com/us/en/products/microcontrollers-microprocessors/rh850-automotive-mcus) |
| - The CC-RH compiler can be downloaded [here](https://www.renesas.com/us/en/software-tool/c-compiler-package-rh850-family#downloads) |
| |
| - **Support:** |
| - If you encounter any issues or have questions about this port, please open an issue in this repository or contact the maintainer. |
| |
| - **Contributing:** |
| - Contributions to improve this port are welcome. Please fork the repository, make your changes, and submit a pull request. |
