SPI適配器上位機底層函數使用代碼
發布時間：2019-06-25 15:35 類型：
基礎知識 人瀏覽
本程序用來讀寫測試25AA020A存儲器，測試代碼如下：
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#include <stdio.h>
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#include <Windows.h>
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//定義SPI適配器底層函數的函數指針
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typedef int(*SPI_Funtion)(char *in,char *out);
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//定義存儲器操作的命令
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#define CMD_READ_DATA 0X03
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#define CMD_PAGE_PROGRAM 0X02
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#define CMD_WRITE_ENABLE 0X06
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//數據存儲區
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unsignedｃｈａｒinString[10240];
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unsignedｃｈａｒoutString[10240];
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//主函數
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int main(void)
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{
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// 加載DLL
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HINSTANCE hDLL; //DLL句柄
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hDLL = LoadLibrary("VT_SPI_Driver.dll");
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//獲取SPI初始化函數指針地址
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SPI_Funtion SPI_Init = (SPI_Funtion)GetProcAddress(hDLL,"VTIF_SPI_Init");
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//獲取SPI寫數據函數指針地址
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SPI_Funtion SPI_WriteData = (SPI_Funtion)GetProcAddress(hDLL,"VTIF_SPI_WriteData");
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//獲取SPI讀數據函數指針地址
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SPI_Funtion SPI_ReadData = (SPI_Funtion)GetProcAddress(hDLL,"VTIF_SPI_ReadData");
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//獲取SPI寫讀數據函數指針地址
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SPI_Funtion SPI_WriteReadData = (SPI_Funtion)GetProcAddress(hDLL,"VTIF_SPI_WriteReadData");
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//獲取SPI設備選擇函數指針地址
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SPI_Funtion SPI_SelectDevice = (SPI_Funtion)GetProcAddress(hDLL,"VTIF_SPI_SelectDevice");
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//選擇SPI適配器
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printf("選擇SPI適配器\n");
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SPI_SelectDevice("0",(char*)outString);//選擇SPI適配器
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printf("%s\n\n",outString);
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//初始化SPI適配器
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//數據格式為：“控制模式|時鐘極性|時鐘相位|主從模式|數據寬度|移位方向|片選極性|時鐘頻率”
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printf("初始化SPI適配器\n");
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SPI_Init("1|0|0|1|8|0|0|1000000",(char*)outString);//初始化SPI適配器
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printf("%s\n\n",outString);
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//控制SPI適配器寫數據0x06(使能SPI存儲器寫命令)
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printf("控制SPI適配器寫數據0x06(使能SPI存儲器寫命令)\n");
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SPI_WriteData("0x06",(char*)outString);
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printf("%s\n\n",outString);
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Sleep(1);
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//控制SPI適配器寫數據(向SPI存儲器寫入數據，開頭的兩個字節為存儲器控制命令)
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printf("控制SPI適配器寫數據(向SPI存儲器寫入數據，開頭的兩個字節為存儲器控制命令)\n");
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SPI_WriteData("0x02|0x00|20|21|22|23|24|25|26|27|28|29",(char*)outString);
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printf("%s\n\n",outString);
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Sleep(1);
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//控制SPI適配器從SPI存儲器中讀取10字節數據(開頭兩個字節為存儲器控制命令)
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printf("控制SPI適配器從SPI存儲器中讀取10字節數據(開頭兩個字節為存儲器控制命令)\n");
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SPI_WriteReadData("0x03|0x00|0x0A",(char*)outString);
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printf("%s\n\n",outString);
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Sleep(1);
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FreeLibrary(hDLL);
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system("pause");
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return 0;
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}
復制代碼
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