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Move to latest HAL release trying to get I2C DMA to be more reliable, and known good point.
Cleans up some redundant calls as well to make some flash room.
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@@ -2,10 +2,8 @@
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******************************************************************************
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* @file stm32f1xx_hal_wwdg.c
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* @author MCD Application Team
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* @version V1.1.1
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* @date 12-May-2017
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* @brief WWDG HAL module driver.
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* This file provides firmware functions to manage the following
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* This file provides firmware functions to manage the following
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* functionalities of the Window Watchdog (WWDG) peripheral:
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* + Initialization and de-initialization functions
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* + IO operation functions
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@@ -14,44 +12,44 @@
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==============================================================================
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##### WWDG specific features #####
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==============================================================================
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[..]
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[..]
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Once enabled the WWDG generates a system reset on expiry of a programmed
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time period, unless the program refreshes the counter (downcounter)
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time period, unless the program refreshes the counter (downcounter)
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before reaching 0x3F value (i.e. a reset is generated when the counter
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value rolls over from 0x40 to 0x3F).
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value rolls over from 0x40 to 0x3F).
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(+) An MCU reset is also generated if the counter value is refreshed
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before the counter has reached the refresh window value. This
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before the counter has reached the refresh window value. This
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implies that the counter must be refreshed in a limited window.
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(+) Once enabled the WWDG cannot be disabled except by a system reset.
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(+) WWDGRST flag in RCC_CSR register can be used to inform when a WWDG
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reset occurs.
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(+) The WWDG counter input clock is derived from the APB clock divided
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reset occurs.
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(+) The WWDG counter input clock is derived from the APB clock divided
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by a programmable prescaler.
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(+) WWDG clock (Hz) = PCLK1 / (4096 * Prescaler)
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(+) WWDG timeout (mS) = 1000 * Counter / WWDG clock
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(+) WWDG Counter refresh is allowed between the following limits :
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(++) min time (mS) = 1000 * (Counter _ Window) / WWDG clock
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(++) max time (mS) = 1000 * (Counter _ 0x40) / WWDG clock
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(+) Min-max timeout value at 36 MHz(PCLK1): 910 us / 58.25 ms
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(+) The Early Wakeup Interrupt (EWI) can be used if specific safety
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(+) Min-max timeout value at 36 MHz(PCLK1): 910 us / 58.25 ms
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(+) The Early Wakeup Interrupt (EWI) can be used if specific safety
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operations or data logging must be performed before the actual reset is
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generated. When the downcounter reaches the value 0x40, an EWI interrupt
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is generated and the corresponding interrupt service routine (ISR) can
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be used to trigger specific actions (such as communications or data
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is generated and the corresponding interrupt service routine (ISR) can
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be used to trigger specific actions (such as communications or data
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logging), before resetting the device.
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In some applications, the EWI interrupt can be used to manage a software
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system check and/or system recovery/graceful degradation, without
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generating a WWDG reset. In this case, the corresponding interrupt
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service routine (ISR) should reload the WWDG counter to avoid the WWDG
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system check and/or system recovery/graceful degradation, without
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generating a WWDG reset. In this case, the corresponding interrupt
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service routine (ISR) should reload the WWDG counter to avoid the WWDG
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reset, then trigger the required actions.
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Note:When the EWI interrupt cannot be served, e.g. due to a system lock
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Note:When the EWI interrupt cannot be served, e.g. due to a system lock
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in a higher priority task, the WWDG reset will eventually be generated.
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(+) Debug mode : When the microcontroller enters debug mode (core halted),
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the WWDG counter either continues to work normally or stops, depending
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the WWDG counter either continues to work normally or stops, depending
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on DBG_WWDG_STOP configuration bit in DBG module, accessible through
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__HAL_DBGMCU_FREEZE_WWDG() and __HAL_DBGMCU_UNFREEZE_WWDG() macros
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@@ -60,12 +58,12 @@
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[..]
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(+) Enable WWDG APB1 clock using __HAL_RCC_WWDG_CLK_ENABLE().
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(+) Set the WWDG prescaler, refresh window, counter value and Early Wakeup
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(+) Set the WWDG prescaler, refresh window, counter value and Early Wakeup
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Interrupt mode using using HAL_WWDG_Init() function.
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This enables WWDG peripheral and the downcounter starts downcounting
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This enables WWDG peripheral and the downcounter starts downcounting
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from given counter value.
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Init function can be called again to modify all watchdog parameters,
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however if EWI mode has been set once, it can't be clear until next
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Init function can be called again to modify all watchdog parameters,
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however if EWI mode has been set once, it can't be clear until next
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reset.
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(+) The application program must refresh the WWDG counter at regular
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@@ -73,8 +71,8 @@
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HAL_WWDG_Refresh() function. This operation must occur only when
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the counter is lower than the window value already programmed.
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(+) if Early Wakeup Interrupt mode is enable an interrupt is generated when
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the counter reaches 0x40. User can add his own code in weak function
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(+) if Early Wakeup Interrupt mode is enable an interrupt is generated when
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the counter reaches 0x40. User can add his own code in weak function
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HAL_WWDG_EarlyWakeupCallback().
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*** WWDG HAL driver macros list ***
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@@ -148,7 +146,7 @@
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==============================================================================
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##### Initialization and Configuration functions #####
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==============================================================================
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[..]
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[..]
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This section provides functions allowing to:
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(+) Initialize and start the WWDG according to the specified parameters
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in the WWDG_InitTypeDef of associated handle.
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@@ -168,7 +166,7 @@
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HAL_StatusTypeDef HAL_WWDG_Init(WWDG_HandleTypeDef *hwwdg)
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{
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/* Check the WWDG handle allocation */
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if(hwwdg == NULL)
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if (hwwdg == NULL)
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{
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return HAL_ERROR;
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}
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@@ -217,12 +215,12 @@ __weak void HAL_WWDG_MspInit(WWDG_HandleTypeDef *hwwdg)
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*/
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/** @defgroup WWDG_Exported_Functions_Group2 IO operation functions
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* @brief IO operation functions
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* @brief IO operation functions
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*
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@verbatim
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==============================================================================
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##### IO operation functions #####
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==============================================================================
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==============================================================================
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[..]
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This section provides functions allowing to:
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(+) Refresh the WWDG.
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@@ -251,7 +249,7 @@ HAL_StatusTypeDef HAL_WWDG_Refresh(WWDG_HandleTypeDef *hwwdg)
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* @brief Handle WWDG interrupt request.
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* @note The Early Wakeup Interrupt (EWI) can be used if specific safety operations
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* or data logging must be performed before the actual reset is generated.
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* The EWI interrupt is enabled by calling HAL_WWDG_Init function with
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* The EWI interrupt is enabled by calling HAL_WWDG_Init function with
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* EWIMode set to WWDG_EWI_ENABLE.
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* When the downcounter reaches the value 0x40, and EWI interrupt is
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* generated and the corresponding Interrupt Service Routine (ISR) can
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@@ -264,15 +262,15 @@ HAL_StatusTypeDef HAL_WWDG_Refresh(WWDG_HandleTypeDef *hwwdg)
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void HAL_WWDG_IRQHandler(WWDG_HandleTypeDef *hwwdg)
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{
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/* Check if Early Wakeup Interrupt is enable */
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if(__HAL_WWDG_GET_IT_SOURCE(hwwdg, WWDG_IT_EWI) != RESET)
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if (__HAL_WWDG_GET_IT_SOURCE(hwwdg, WWDG_IT_EWI) != RESET)
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{
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/* Check if WWDG Early Wakeup Interrupt occurred */
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if(__HAL_WWDG_GET_FLAG(hwwdg, WWDG_FLAG_EWIF) != RESET)
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if (__HAL_WWDG_GET_FLAG(hwwdg, WWDG_FLAG_EWIF) != RESET)
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{
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/* Clear the WWDG Early Wakeup flag */
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__HAL_WWDG_CLEAR_FLAG(hwwdg, WWDG_FLAG_EWIF);
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/* Early Wakeup callback */
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/* Early Wakeup callback */
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HAL_WWDG_EarlyWakeupCallback(hwwdg);
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}
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}
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@@ -284,7 +282,7 @@ void HAL_WWDG_IRQHandler(WWDG_HandleTypeDef *hwwdg)
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* the configuration information for the specified WWDG module.
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* @retval None
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*/
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__weak void HAL_WWDG_EarlyWakeupCallback(WWDG_HandleTypeDef* hwwdg)
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__weak void HAL_WWDG_EarlyWakeupCallback(WWDG_HandleTypeDef *hwwdg)
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{
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/* Prevent unused argument(s) compilation warning */
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UNUSED(hwwdg);
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