SPI适配器上位机底层函数使用代码
本程序用来读写测试25AA020A存储器，测试代码如下：[*]#include <stdio.h>
[*]#include <Windows.h>
[*]//定义SPI适配器底层函数的函数指针
[*]typedef int(*SPI_Funtion)(char *in,char *out);
[*]//定义存储器操作的命令
[*]#define CMD_READ_DATA 0X03
[*]#define CMD_PAGE_PROGRAM 0X02
[*]#define CMD_WRITE_ENABLE 0X06
[*]//数据存储区
[*]unsigned char inString;
[*]unsigned char outString;
[*]//主函数
[*]int main(void)
[*]{
[*] // 加载DLL
[*] HINSTANCE hDLL; //DLL句柄
[*] hDLL = LoadLibrary("VT_SPI_Driver.dll");
[*] //获取SPI初始化函数指针地址
[*] SPI_Funtion SPI_Init = (SPI_Funtion)GetProcAddress(hDLL,"VTIF_SPI_Init");
[*] //获取SPI写数据函数指针地址
[*] SPI_Funtion SPI_WriteData = (SPI_Funtion)GetProcAddress(hDLL,"VTIF_SPI_WriteData");
[*] //获取SPI读数据函数指针地址
[*] SPI_Funtion SPI_ReadData = (SPI_Funtion)GetProcAddress(hDLL,"VTIF_SPI_ReadData");
[*] //获取SPI写读数据函数指针地址
[*] SPI_Funtion SPI_WriteReadData = (SPI_Funtion)GetProcAddress(hDLL,"VTIF_SPI_WriteReadData");
[*] //获取SPI设备选择函数指针地址
[*] SPI_Funtion SPI_SelectDevice = (SPI_Funtion)GetProcAddress(hDLL,"VTIF_SPI_SelectDevice");
[*] //选择SPI适配器
[*] printf("选择SPI适配器\n");
[*] SPI_SelectDevice("0",(char*)outString);//选择SPI适配器
[*] printf("%s\n\n",outString);
[*] //初始化SPI适配器
[*] //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”
[*] printf("初始化SPI适配器\n");
[*] SPI_Init("1|0|0|1|8|0|0|1000000",(char*)outString);//初始化SPI适配器
[*] printf("%s\n\n",outString);
[*]
[*] //控制SPI适配器写数据0x06(使能SPI存储器写命令)
[*] printf("控制SPI适配器写数据0x06(使能SPI存储器写命令)\n");
[*] SPI_WriteData("0x06",(char*)outString);
[*] printf("%s\n\n",outString);
[*] Sleep(1);
[*]
[*] //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)
[*] 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");
[*] SPI_WriteData("0x02|0x00|20|21|22|23|24|25|26|27|28|29",(char*)outString);
[*] printf("%s\n\n",outString);
[*] Sleep(1);
[*]
[*] //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)
[*] 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");
[*] SPI_WriteReadData("0x03|0x00|0x0A",(char*)outString);
[*] printf("%s\n\n",outString);
[*] Sleep(1);
[*]
[*] FreeLibrary(hDLL);
[*] system("pause");
[*] return 0;
[*]}
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