75 lines
1.5 KiB
C
75 lines
1.5 KiB
C
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#include "fram.h"
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#include "inout.h"
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//-------------------------------------------------------------------------------
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// <20><>д<EFBFBD><D0B4><EFBFBD><EFBFBD>
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//----------------------------------------
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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#define FRAM_CMD_WREN 0x06 // <20><><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD>
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#define FRAM_CMD_WRDI 0x04 // <20><><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD>
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#define FRAM_CMD_RDSR 0x05 // <20><>״̬<D7B4>Ĵ<EFBFBD><C4B4><EFBFBD>
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#define FRAM_CMD_WRSR 0x01 // д״̬<D7B4>Ĵ<EFBFBD><C4B4><EFBFBD>
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#define FRAM_CMD_READ 0x03 // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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#define FRAM_CMD_WRITE 0x02 // д<><D0B4><EFBFBD><EFBFBD>
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//------------------------------------------------------------------------------------------
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// <20><>ʼ<EFBFBD><CABC> Fram
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void InitFram(void)
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{
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InitFramSpi();
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}
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//------------------------------------------------------------------------------------------
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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int ReadFramData(u16 addr, u8 * pBuf, u16 len)
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{
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int i;
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if (len != 0 && pBuf != NULL)
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{
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FramNceOn();
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FramWriteByte(FRAM_CMD_READ); // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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FramWriteByte(HIBYTE(addr));
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FramWriteByte(LOBYTE(addr));
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for (i = 0; i < len; i++)
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{
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*pBuf++ = FramReadByte();
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}
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FramNceOff();
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return len;
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}
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return 0;
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}
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//------------------------------------------------------------------------------------------
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// д<><D0B4><EFBFBD><EFBFBD>
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int WriteFramData(u16 addr, u8 * pBuf, u16 len)
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{
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int i;
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if (len != 0 && pBuf != NULL)
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{
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FramNceOn();
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FramWriteByte(FRAM_CMD_WREN); // <20><><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD>
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FramNceOff();
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FramNceOn();
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FramWriteByte(FRAM_CMD_WRITE); // д<><D0B4><EFBFBD><EFBFBD>
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FramWriteByte(HIBYTE(addr));
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FramWriteByte(LOBYTE(addr));
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for (i = 0; i < len; i++)
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{
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FramWriteByte(*pBuf++);
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}
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FramNceOff();
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return len;
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}
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return 0;
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}
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