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hal: renesas: rx: Add IWDT driver support for Renesas RX #98

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a162a9a
hal: renesas: rx: Add support for IWDT driver on RX
quytranpzz May 7, 2025
6468ffc
hal: renesas: rx: Fix the build warning in WDT source
quytranpzz Jun 9, 2025
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10 changes: 10 additions & 0 deletions drivers/rx/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -91,3 +91,13 @@ if(CONFIG_USE_RX_RDP_RSPI)
rdp/src/r_rspi_rx/src
rdp/src/r_rspi_rx)
endif()

if(CONFIG_USE_RX_RDP_IWDT)
zephyr_include_directories(
rdp/src/r_iwdt_rx
rdp/src/r_iwdt_rx/src
)
zephyr_library_sources(
rdp/src/r_iwdt_rx/src/r_iwdt_rx.c
)
endif()
4 changes: 4 additions & 0 deletions drivers/rx/README
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Expand Up @@ -52,3 +52,7 @@ Patch List:
Impacted files:
drivers/rx/rdp/src/r_rspi_rx/src/r_rspi_rx.c
drivers/rx/rdp/src/r_rspi_rx/src/r_rspi_rx_private.h

* Fix the build warnings in IWDT driver
Impacted files:
drivers/rx/rdp/src/r_iwdt_rx/src/r_iwdt_rx.c
198 changes: 198 additions & 0 deletions drivers/rx/rdp/src/r_iwdt_rx/r_iwdt_rx_if.h
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Original file line number Diff line number Diff line change
@@ -0,0 +1,198 @@
/***********************************************************************************************************************
* Copyright (c) 2013 - 2025 Renesas Electronics Corporation and/or its affiliates
*
* SPDX-License-Identifier: BSD-3-Clause
***********************************************************************************************************************/
/***********************************************************************************************************************
* File Name : r_iwdt_rx_if.h
* Description : Functions for using IWDT on RX devices.
***********************************************************************************************************************/
/***********************************************************************************************************************
* History : DD.MM.YYYY Version Description
* 07.06.2013 1.00 First Release
* 06.09.2013 1.10 Change enumeration name
* 19.03.2014 1.20 Removed unnecessary #includes. Added #ifdef to e_iwdt_timeout. Changed version number.
* 30.12.2014 1.30 Added support for RX113.
* 06.03.2015 1.40 Added support for RX64M & RX71M
* 02.06.2015 1.50 Added support for RX231
* 01.03.2016 1.51 Added support for RX130, RX230 and RX23T
* 30.06.2016 1.60 Added support for RX65N
* 19.12.2016 1.70 Added support for RX24U, RX24T(512KB)
* 21.07.2017 1.80 Added support for RX130_512KB, RX65N-2M
* 31.10.2017 1.81 Added the demo for RX65N, RX65N-2M
* 28.09.2018 1.90 Added support for RX66T
* 16.11.2018 1.91 Added XML document number
* 01.02.2019 2.00 Added support for RX72T, RX65N-64pin.
* Bug fix: R_WDT_Open(), R_IWDT_Open() invalidated if either module is in auto-start mode.
* 20.05.2019 3.00 Added support for GNUC and ICCRX.
* 28.06.2019 3.10 Added support for RX23W.
* 15.08.2019 3.20 Added support for RX72M.
* 25.11.2019 3.30 Added support for RX13T.
* Removed support for Generation 1 devices.
* Fixed to comply with GSCE Coding Standards Rev.6.00.
* 30.12.2019 3.40 Added support for RX66N, RX72N.
* 31.03.2020 3.50 Added support for RX23E-A.
* 30.06.2020 3.60 Changed revision to reflect demo upgrade.
* 31.03.2021 3.70 Added support for RX671.
* 15.04.2021 3.80 Added support for RX140.
* 13.09.2021 3.90 Added the demo for RX671.
* 14.03.2022 4.00 Added support for RX66T-48Pin.
* 31.03.2022 4.10 Added support for RX660.
* 28.06.2022 4.20 Updated demo projects.
* 15.08.2022 4.30 Added support for RX26T.
* Fixed to comply with GSCE Coding Standards Rev.6.5.0
* 29.05.2023 4.40 Added support for RX23E-B.
* Fixed to comply with GSCE Coding Standards Rev.6.5.0
* 28.06.2024 4.50 Added support for RX260, RX261.
* 15.03.2025 4.51 Updated disclaimer
***********************************************************************************************************************/

#ifndef IWDT_RX_IF_H
#define IWDT_RX_IF_H

/***********************************************************************************************************************
Includes <System Includes> , "Project Includes"
***********************************************************************************************************************/
#include "platform.h"
/* Used for configuring the IWDT code */
#include "r_iwdt_rx_config.h"

/***********************************************************************************************************************
Macro definitions
***********************************************************************************************************************/
#if R_BSP_VERSION_MAJOR < 5
#error "This module must use BSP module of Rev.5.00 or higher. Please use the BSP module of Rev.5.00 or higher."
#endif
/* Version Number of API. */
#define IWDT_RX_VERSION_MAJOR (4)
#define IWDT_RX_VERSION_MINOR (51)

#define OFS0_IWDT_DISABLED (0x00000002)

/***********************************************************************************************************************
Typedef definitions
***********************************************************************************************************************/

/* API ERROR RETURN CODES */

#define IWDT_STAT_REFRESH_ERR_MASK (0x8000)
#define IWDT_STAT_UNDERFLOW_ERR_MASK (0x4000)
#define IWDT_STAT_ERROR_MASK (0xC000)
#define IWDT_STAT_COUNTER_MASK (0x3FFF)

typedef enum e_iwdt_err // IWDT API error codes
{
IWDT_SUCCESS=0,
IWDT_ERR_OPEN_IGNORED, // The module has already been Open
IWDT_ERR_INVALID_ARG, // Argument is not valid for parameter
IWDT_ERR_NULL_PTR, // Received null pointer or missing required argument
IWDT_ERR_NOT_OPENED, // Open function has not yet been called
IWDT_ERR_BUSY, // IWDT resource locked
} iwdt_err_t;


/* Open() DEFINITIONS */

typedef enum e_iwdt_timeout // IWDT Time-Out Period
{
#if defined(BSP_MCU_RX11_ALL) || defined(BSP_MCU_RX130) || defined(BSP_MCU_RX13T) || defined(BSP_MCU_RX23_ALL) \
|| defined(BSP_MCU_RX24U)|| defined(BSP_MCU_RX140) || defined(BSP_MCU_RX260) || defined(BSP_MCU_RX261)
IWDT_TIMEOUT_128 =0x0000u, // 128 (cycles)
IWDT_TIMEOUT_512 =0x0001u, // 512 (cycles)
IWDT_TIMEOUT_1024=0x0002u, // 1024 (cycles)
IWDT_TIMEOUT_2048=0x0003u, // 2048 (cycles)
#else /* RX64M, RX71M, RX65N, RX66T, RX66N, RX72T, RX72M, RX72N, RX671, RX660, RX26T */
IWDT_TIMEOUT_1024 =0x0000u, // 1024 (cycles)
IWDT_TIMEOUT_4096 =0x0001u, // 4096 (cycles)
IWDT_TIMEOUT_8192 =0x0002u, // 8192 (cycles)
IWDT_TIMEOUT_16384=0x0003u, // 16,384 (cycles)
#endif
IWDT_NUM_TIMEOUTS
} iwdt_timeout_t;

typedef enum e_iwdt_clock_div // IWDT Clock Division Ratio
{
IWDT_CLOCK_DIV_1 =0x0000u, // IWDTCLK/1
IWDT_CLOCK_DIV_16 =0x0020u, // IWDTCLK/16
IWDT_CLOCK_DIV_32 =0x0030u, // IWDTCLK/32
IWDT_CLOCK_DIV_64 =0x0040u, // IWDTCLK/64
IWDT_CLOCK_DIV_128=0x00F0u, // IWDTCLK/128
IWDT_CLOCK_DIV_256=0x0050u // IWDTCLK/256
} iwdt_clock_div_t;

typedef enum e_iwdt_window_end // Window End Position
{
IWDT_WINDOW_END_75=0x0000u, // 75%
IWDT_WINDOW_END_50=0x0100u, // 50%
IWDT_WINDOW_END_25=0x0200u, // 25%
IWDT_WINDOW_END_0 =0x0300u // 0% (window end position is not specified)
} iwdt_window_end_t;

typedef enum e_iwdt_window_start // Window Start Position
{
IWDT_WINDOW_START_25 =0x0000u, // 25%
IWDT_WINDOW_START_50 =0x1000u, // 50%
IWDT_WINDOW_START_75 =0x2000u, // 75%
IWDT_WINDOW_START_100=0x3000u // 100% (window start position is not specified)
} iwdt_window_start_t;

typedef enum e_iwdt_timeout_control // Signal control when Time-out and Refresh error
{
IWDT_TIMEOUT_NMI =0x00u, // Non-maskable interrupt request output is enabled
IWDT_TIMEOUT_RESET=0x80u // Reset output is enabled
} iwdt_timeout_control_t;

typedef enum e_iwdt_count_stop // Sleep mode count stop
{
IWDT_COUNT_STOP_DISABLE=0x00u, // 0: Count stop is disabled
IWDT_COUNT_STOP_ENABLE =0x80u // 1: Count stop is enabled
} iwdt_count_stop_t;

typedef struct st_iwdt_config // IWDT configuration options used in Open function
{
iwdt_timeout_t timeout; // Time-out period
iwdt_clock_div_t iwdtclk_div; // IWDT clock division ratio
iwdt_window_start_t window_start; // Window start position
iwdt_window_end_t window_end; // Window end position
iwdt_timeout_control_t timeout_control; // Reset or NMI output when time-out
iwdt_count_stop_t count_stop_enable;// Sleep mode count stop function
} iwdt_config_t;


/* Control() DEFINITIONS */

typedef enum e_iwdt_cmd // Command used in Control and GetStatus function
{
IWDT_CMD_GET_STATUS, // Get IWDT status
IWDT_CMD_REFRESH_COUNTING // Refresh the counter
} iwdt_cmd_t;

/***********************************************************************************************************************
Public Functions
***********************************************************************************************************************/
#if ((BSP_CFG_OFS0_REG_VALUE & OFS0_IWDT_DISABLED) == OFS0_IWDT_DISABLED) /* Register start mode */
/******************************************************************************
* Function Name: R_IWDT_Open
* Description : Initializes the IWDT counter options by initializing the associated registers
* Argument : p_cfg
* Return Value : .
*****************************************************************************/
iwdt_err_t R_IWDT_Open (void * const p_cfg);
#endif
/******************************************************************************
* Function Name: R_IWDT_Control
* Description : Getting the IWDT status and refreshing the down-counter of IWDT
* Arguments : cmd
* : p_status
* Return Value : .
*****************************************************************************/
iwdt_err_t R_IWDT_Control (iwdt_cmd_t const cmd, uint16_t * p_status);

/******************************************************************************
* Function Name: R_IWDT_GetVersion
* Description : Returns the version number of the module
* Return Value : .
*****************************************************************************/
uint32_t R_IWDT_GetVersion (void);

#endif /* IWDT_RX_IF_H */
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