SPI适配器上位机底层函数使用代码
发布时间:2019-06-25 15:35 类型:
基础知识 人浏览
本程序用来读写测试25AA020A存储器,测试代码如下:
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#include <stdio.h>
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#include <Windows.h>
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//定义SPI适配器底层函数的函数指针
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typedef int(*SPI_Funtion)(char *in,char *out);
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//定义存储器操作的命令
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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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//数据存储区
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unsignedcharinString[10240];
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unsignedcharoutString[10240];
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//主函数
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int main(void)
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{
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// 加载DLL
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HINSTANCE hDLL; //DLL句柄
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hDLL = LoadLibrary("VT_SPI_Driver.dll");
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//获取SPI初始化函数指针地址
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SPI_Funtion SPI_Init = (SPI_Funtion)GetProcAddress(hDLL,"VTIF_SPI_Init");
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//获取SPI写数据函数指针地址
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SPI_Funtion SPI_WriteData = (SPI_Funtion)GetProcAddress(hDLL,"VTIF_SPI_WriteData");
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//获取SPI读数据函数指针地址
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SPI_Funtion SPI_ReadData = (SPI_Funtion)GetProcAddress(hDLL,"VTIF_SPI_ReadData");
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//获取SPI写读数据函数指针地址
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SPI_Funtion SPI_WriteReadData = (SPI_Funtion)GetProcAddress(hDLL,"VTIF_SPI_WriteReadData");
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//获取SPI设备选择函数指针地址
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SPI_Funtion SPI_SelectDevice = (SPI_Funtion)GetProcAddress(hDLL,"VTIF_SPI_SelectDevice");
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//选择SPI适配器
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printf("选择SPI适配器\n");
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SPI_SelectDevice("0",(char*)outString);//选择SPI适配器
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printf("%s\n\n",outString);
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//初始化SPI适配器
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//数据格式为:“控制模式|时钟极性|时钟相位|主从模式|数据宽度|移位方向|片选极性|时钟频率”
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printf("初始化SPI适配器\n");
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SPI_Init("1|0|0|1|8|0|0|1000000",(char*)outString);//初始化SPI适配器
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printf("%s\n\n",outString);
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//控制SPI适配器写数据0x06(使能SPI存储器写命令)
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printf("控制SPI适配器写数据0x06(使能SPI存储器写命令)\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适配器写数据(向SPI存储器写入数据,开头的两个字节为存储器控制命令)
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printf("控制SPI适配器写数据(向SPI存储器写入数据,开头的两个字节为存储器控制命令)\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适配器从SPI存储器中读取10字节数据(开头两个字节为存储器控制命令)
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printf("控制SPI适配器从SPI存储器中读取10字节数据(开头两个字节为存储器控制命令)\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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}
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