//========================================
//test_fun3 功能是取16字节随机数
//
//========================================
void test_fun3(unsigned char xdata *TxComm) // get random
{
GetRandomData( TxComm + 1, 16 );
TxComm[0] = 16 ;
}
static void DemoRandomGraph(void) {
PARAM Param;
int tDiff, t0;
GUI_RECT Rect = {19, (LCD_YSIZE - 20) - YSIZE, (LCD_XSIZE - 2), (LCD_YSIZE - 21)};
GUI_HMEM hMem = GUI_ALLOC_Alloc((LCD_XSIZE - 20) * sizeof(I16));
GUI_SetColor(GUI_WHITE);
GUI_SetBkColor(GUI_RED);
GUI_ClearRect(0, 0, LCD_XSIZE, 60);
GUI_SetFont(&GUI_FontComic18B_1);
GUI_DispStringAt("Random graph", 10, 20);
Param.aY = GUI_ALLOC_h2p(hMem);
GUI_SetFont(&GUI_Font6x8);
t0 = GUI_GetTime();
while((tDiff = (GUI_GetTime() - t0)) < 10000) {
int t1, tDiff2;
GetRandomData(Param.aY, tDiff, (LCD_XSIZE - 20));
t1 = GUI_GetTime();
GUI_MEMDEV_Draw(&Rect, Draw, &Param, 0, 0);
tDiff2 = GUI_GetTime() - t1;
if (tDiff2 < 100) {
GUI_Delay(100 - tDiff2);
}
}
GUI_ALLOC_Free(hMem);
}
// generate random numbers from a buffer filled in by GetRandomData()
unsigned int PWSrand::RandUInt()
{
// we don't want to keep filling the random buffer for each number we
// want, so fill the buffer with random data and use it up
if (ibRandomData > (SHA256::HASHLEN - sizeof(uint32))) {
// no data left, refill the buffer
GetRandomData(rgbRandomData, SHA256::HASHLEN);
ibRandomData = 0;
}
const unsigned int u =
*(reinterpret_cast<uint32 *>(rgbRandomData + ibRandomData));
ibRandomData += sizeof(uint32);
return u;
}
//-----------------------------------------------------------------------------
// Program entry-point function
//-----------------------------------------------------------------------------
int main (int argc, char *argv[])
{
int ddcError = 0;
DDCFileHandle file = 0;
DDCChannelGroupHandle group;
DDCChannelHandle channels[2];
double channel1Data[NUM_DATA_PTS], channel2Data[NUM_DATA_PTS];
// If file exists, delete it.
remove (FILE_PATH);
printf ("Generating data file...\n");
// Create file and add channel group and channels.
ddcChk (DDC_CreateFile (FILE_PATH, "TDM", FILE_NAME, FILE_DESC, "", "", &file));
ddcChk (DDC_AddChannelGroup (file, GROUP_NAME, GROUP_DESC, &group));
ddcChk (DDC_AddChannel (group, DDC_Double, CHANNEL1_NAME,
CHANNEL1_DESC, CHANNEL1_UNITS, &channels[0]));
ddcChk (DDC_AddChannel (group, DDC_Double, CHANNEL2_NAME,
CHANNEL2_DESC, CHANNEL2_UNITS, &channels[1]));
GetSineData (NUM_DATA_PTS, channel1Data);
GetRandomData (NUM_DATA_PTS, channel2Data);
// Write the data in the channels
ddcChk (DDC_SetDataValues (channels[0], channel1Data, NUM_DATA_PTS));
ddcChk (DDC_SetDataValues (channels[1], channel2Data, NUM_DATA_PTS));
// Save the file
ddcChk (DDC_SaveFile (file));
Error:
// Close the file and report any errors
if (file)
DDC_CloseFile (file);
if (ddcError < 0)
printf ("\nError: %s\n", DDC_GetLibraryErrorDescription(ddcError));
else
printf ("\nNo errors.\n");
printf("End of program, press Enter key to quit\n");
getchar();
return 0;
}
