Non-Volatile Memory Wear-Leveling driver HAL implementation.

License

SPDX-License-Identifier: Zlib

The licensor of this software is Silicon Laboratories Inc.

This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.

Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:

The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
This notice may not be removed or altered from any source distribution.

Definition in file nvm_hal.c .


       #include <stdbool.h>


       #include "
       
        em_msc.h
       
       "


       #include "
       
        nvm.h
       
       "


       #include "
       
        nvm_hal.h
       
       "

Functions
void	NVMHAL_Checksum (uint16_t pChecksum, void pMemory, uint16_t len)
	Calculate checksum according to CCITT CRC16.

void	NVMHAL_DeInit (void)
	De-initialize NVM .

void	NVMHAL_Init (void)
	Initialize NVM driver.

Ecode_t	NVMHAL_PageErase (uint8_t *pAddress)
	Erase a page in the NVM.

void	NVMHAL_Read (uint8_t pAddress, void pObject, uint16_t len)
	Read data from NVM.

Ecode_t	NVMHAL_Write (uint8_t pAddress, void const pObject, uint16_t len)
	Write data to NVM.

Function Documentation

void NVMHAL_Checksum	(	uint16_t *	`pChecksum,`
		void *	`pMemory,`
		uint16_t	`len`
	)

Calculate checksum according to CCITT CRC16.

This function calculates a checksum of the supplied buffer. The checksum is calculated using CCITT CRC16 plynomial x^16+x^12+x^5+1.

This functionality is also present internally in the API, but is duplicated here to allow for much more efficient calculations specific to the hardware.

Parameters

[in]	`pChecksum`	Pointer to where the checksum should be calculated and stored. This buffer should be initialized. A good consistent starting point would be NVM_CHECKSUM_INITIAL.
[in]	`pMemory`	Pointer to the data you want to calculate a checksum for.
[in]	`len`	The length of the data.

Definition at line 318 of file nvm_hal.c .

void NVMHAL_DeInit ( void )

De-initialize NVM .

This function is run when the API deinit function is run. This should be done before any graceful halts.

Definition at line 147 of file nvm_hal.c .

References MSC_Deinit() .

void NVMHAL_Init ( void )

Initialize NVM driver.

This function is run upon initialization, at least once before any other functions. It can be used to call necessary startup routines before the hardware can be accessed.

Definition at line 134 of file nvm_hal.c .

References MSC_Init() .

Referenced by NVM_Init() .

Ecode_t NVMHAL_PageErase ( uint8_t * pAddress )

Erase a page in the NVM.

This function calls MSC_ErasePage and converts the return status.

Parameters

[in] *pAddress Memory address pointing to the start of the page to erase.

Returns: Returns the result of the erase operation.

Definition at line 289 of file nvm_hal.c .

References MSC_ErasePage() .

Referenced by NVM_Erase() .

void NVMHAL_Read	(	uint8_t *	`pAddress,`
		void *	`pObject,`
		uint16_t	`len`
	)

Read data from NVM.

This function is used to read data from the NVM hardware. It should be a blocking call, since the thread asking for data to be read cannot continue without the data.

Another requirement is the ability to read unaligned blocks of data with single byte precision.

Parameters

[in]	`*pAddress`	Memory address in hardware for the data to read.
[in]	`*pObject`	RAM buffer to store the data from NVM.
[in]	`len`	The length of the data.

Definition at line 173 of file nvm_hal.c .

Referenced by NVM_Erase() , NVM_Init() , NVM_Read() , and NVM_Write() .

Ecode_t NVMHAL_Write	(	uint8_t *	`pAddress,`
		void const *	`pObject,`
		uint16_t	`len`
	)

Write data to NVM.

This function is used to write data to the NVM. This is a blocking function.

Parameters

[in]	`*pAddress`	NVM address to write to.
[in]	`*pObject`	Pointer to source data.
[in]	`len`	The length of the data in bytes.

Returns: Returns the result of the write operation.

Definition at line 210 of file nvm_hal.c .

References MSC_WriteWord() , and mscReturnOk .

Referenced by NVM_Erase() , and NVM_Write() .

nvm_hal.c File Reference

License

Functions

Function Documentation