Non-Volatile Memory HAL. More...
#include <stdbool.h>
#include "nvm.h"
#include <stdint.h>
#include "em_device.h"
#include "em_msc.h"
#include "em_dma.h"
#include "em_cmu.h"
#include "em_emu.h"
#include "em_int.h"
Go to the source code of this file.
Defines | |
#define | NVMHAL_SLEEP_FORMAT false |
Use energy saving version of format function. | |
#define | NVMHAL_SLEEP_WRITE false |
Use energy saving version of write function. | |
#define | NVMHAL_DMAREAD false |
DMA read uses the DMA to read data from flash. | |
Functions | |
void | NVMHAL_Init (void) |
Initialize NVM . | |
void | NVMHAL_DeInit (void) |
De-initialize NVM . | |
void | NVMHAL_Read (uint8_t *pAddress, void *pObject, uint16_t len) |
Read data from NVM. | |
NVM_Result_t | NVMHAL_Write (uint8_t *pAddress, void const *pObject, uint16_t len) |
Write data to NVM. | |
NVM_Result_t | NVMHAL_PageErase (uint8_t *pAddress) |
Erase a page in the NVM. | |
void | NVMHAL_Checksum (uint16_t *checksum, void *pMemory, uint16_t len) |
Calculate checksum according to CCITT CRC16. |
Non-Volatile Memory HAL.
(C) Copyright 2013 Energy Micro AS, http://www.energymicro.com
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Definition in file nvm_hal.h.
#define NVMHAL_DMAREAD false |
#define NVMHAL_SLEEP_FORMAT false |
#define NVMHAL_SLEEP_WRITE false |
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.
[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. |
void NVMHAL_DeInit | ( | void | ) |
void NVMHAL_Init | ( | void | ) |
Initialize NVM .
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 433 of file nvm_hal.c.
Referenced by NVM_Init().
NVM_Result_t NVMHAL_PageErase | ( | uint8_t * | pAddress | ) |
Erase a page in the NVM.
This function is used to erase a page in the NVM (typically an aligned 512 byte block of memory). It is important that the size and alignment of the page erased is the same as specified in the configuration.
[in] | *pAddress | Memory address pointing to the start of the page to erase. |
Definition at line 671 of file nvm_hal.c.
References NVMHAL_ReturnTypeConvert().
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.
[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 483 of file nvm_hal.c.
Referenced by NVM_Erase(), NVM_Init(), NVM_Read(), NVM_WearLevelGet(), and NVM_Write().
NVM_Result_t NVMHAL_Write | ( | uint8_t * | pAddress, | |
void const * | pObject, | |||
uint16_t | len | |||
) |
Write data to NVM.
This function is used to write data from the NVM. It should be a blocking call. This may be changed in the future, but this is currently a requirement made due to the design of the API code.
Another requirement is the ability to write unaligned blocks of data with single byte precision.
[in] | *pAddress | Memory address to write to. |
[in] | *pObject | Pointer to data to write.. |
[in] | len | The length of the data. |
Definition at line 574 of file nvm_hal.c.
References NVMHAL_ReturnTypeConvert().
Referenced by NVM_Erase(), and NVM_Write().