求大神指点CH375

2013-07-05 10:06:31 217 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

STM32配置CH375B成HID Host模式读取自定义HID设备的数据 ——STM32配置CH375B接口函数接着上一篇上传，这个是STM32配置CH375B时用到的接口函数代码如下： #include "bsp_ch375.h" #include "bsp_init.h" #include "bsp_delay.h" void Bsp_CH375_Write_Cmd(uint8_t cmd ) /* 向CH375的命令端口写入命令*/ { Bsp_DelayUs(5); CH375_CS 阅读详情

[DllImport("CH375DLL.dll")]
static extern IntPtr CH375OpenDevice(int i);//初始化

[DllImport("CH375DLL.dll", EntryPoint = "CH375ResetDevice")]
static extern bool CH375ResetDevice(ulong iIndex );//复位USB设备

[DllImport("CH375DLL.DLL", EntryPoint = "CH375ReadData", ExactSpelling = false, SetLastError = true)]
public static extern bool CH375ReadData(Int16 iIndex, [MarshalAs(UnmanagedType.LPArray)] byte[] oBuffer, [MarshalAs(UnmanagedType.LPArray)] Int32[] ioLength);//读单片机缓存

[DllImport("CH375DLL.DLL", EntryPoint = "CH375WriteData", ExactSpelling = false, SetLastError = true)]
public static extern bool CH375WriteData(Int16 iIndex, [MarshalAs(UnmanagedType.LPArray)] byte[] iBuffer, [MarshalAs(UnmanagedType.LPArray)] Int32[] ioLength); //写单片机缓存

[DllImport("CH375DLL.dll", EntryPoint = "CH375CloseDevice")]
static extern void CH375CloseDevice( // 关闭CH375设备
ulong iIndex);

private void button1_Click(object sender, EventArgs e)
{
CH375OpenDevice(0);//初始化（0为设备号）
byte[] str = new byte[20]; //用于开设单片机缓冲区
Int32[] len = new Int32[1];//读写长度
len[0] = 20;

str[0] = 6;str[1] = 4;str[2] = 1;//缓冲区写入值641
if (CH375WriteData(0, str, len))//写入单片机缓存
{
//读取刚才写入的数据
if (CH375ReadData(0, str, len))
{
string s = str[0].ToString();
string s2 = str[1].ToString();
string s3 = str[2].ToString();
if (s == "6" && s2 == "4" && s3 == "1")
{
MessageBox.Show("OK");
}
else
{
MessageBox.Show("ERROR");
}
}
}

}

这是网上的那段代码，为什么会在读的时候死掉了呢？求指点

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