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 * nvram.h
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 * nvram.h
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 *
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 *
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 *  Created on: 4 Jun 2017
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 *  Created on: 4 Jun 2017
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 *      Author: Mike
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 *      Author: Mike
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 */
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 */
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#include "libPLX/plx.h"
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#pragma once
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#pragma once
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#if defined __cplusplus
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#if defined __cplusplus
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extern "C" {
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extern "C"
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{
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#endif
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#endif
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#pragma pack(push, 1)
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    ///\brief State of currently displayed item
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    typedef union
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    {
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        struct
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        {
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            unsigned tag : 8;
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            unsigned : 8;
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            enum PLX_Observations observation : 8;
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            int instance : 8;
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        } data;
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        uint32_t u32;
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    } nvram_info_t;
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#pragma pack(pop)
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// Allocation of NVRAM words : there are 4k bytes
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#define NVRAM_WORDS (4096 / sizeof(nvram_info_t))
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extern void WriteUint16NVRAM(uint32_t Address, uint16_t data);
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// define a pointer to be set up by the linker, pointing at the NVRAM base address used for data
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    // Save data according to its tag field
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extern void WriteUint32NVRAM(uint32_t Address, uint32_t data);
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    extern void write_nvram_data(nvram_info_t data);
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    // find data according to the tag field or return null if no info,
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#define NVRAM_BASE (uint8_t *)(&NVRAM_Base[0])
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    extern nvram_info_t *find_nvram_data(uint8_t tag);
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#if defined __cplusplus
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#if defined __cplusplus
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}
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}
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#endif
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#endif