tcmRet analyzeHomeMsgBuf ( IN char* buf, IN int bufLen,
OUT uint16_t* msgProVer,
OUT uint16_t payloadLen,
OUT char** msgReserve,
OUT uint16_t* msgEventType,
OUT uint16_t* msgValueLen ,
OUT uint8_t** msgValue )
{
if ( TCMRET_SUCCESS != checkHomeMsgBuf ( buf, bufLen ) )
{
tcmLog_error ( "Protocol msg buf error format\n" );
return TCMRET_FAILURE;
}
getMsgProtocolVersion ( buf, msgProVer );
getMsgPayloadLen ( buf, payloadLen );
getMsgReserve ( buf, msgReserve );
getMsgEventType ( buf, msgEventType );
getMsgValueLen ( buf, msgValueLen );
getMsgValue ( buf, msgValue, msgValueLen );
return TCMRET_SUCCESS;
}
// This is the actual task that is run
static portTASK_FUNCTION( vLCDUpdateTask, pvParameters )
{
#if LCD_EXAMPLE_OP==0
unsigned short screenColor = 0;
unsigned short tscr;
unsigned char curLine;
unsigned timerCount = 0;
int xoffset = 0, yoffset = 0;
unsigned int xmin=0, xmax=0, ymin=0, ymax=0;
unsigned int x, y;
int i, j;
float hue=0, sat=0.2, light=0.2;
#elif LCD_EXAMPLE_OP==1
unsigned char picIndex = 0;
#else
Bad definition
#endif
vtLCDMsg msgBuffer;
vtLCDStruct *lcdPtr = (vtLCDStruct *) pvParameters;
#ifdef INSPECT_STACK
// This is meant as an example that you can re-use in your own tasks
// Inspect to the stack remaining to see how much room is remaining
// 1. I'll check it here before anything really gets started
// 2. I'll check during the run to see if it drops below 10%
// 3. You could use break points or logging to check on this, but
// you really don't want to print it out because printf() can
// result in significant stack usage.
// 4. Note that this checking is not perfect -- in fact, it will not
// be able to tell how much the stack grows on a printf() call and
// that growth can be *large* if version 1 of printf() is used.
unsigned portBASE_TYPE InitialStackLeft = uxTaskGetStackHighWaterMark(NULL);
unsigned portBASE_TYPE CurrentStackLeft;
float remainingStack = InitialStackLeft;
remainingStack /= lcdSTACK_SIZE;
if (remainingStack < 0.10) {
// If the stack is really low, stop everything because we don't want it to run out
// The 0.10 is just leaving a cushion, in theory, you could use exactly all of it
VT_HANDLE_FATAL_ERROR(0);
}
#endif
/* Initialize the LCD and set the initial colors */
GLCD_Init();
tscr = Red; // may be reset in the LCDMsgTypeTimer code below
screenColor = White; // may be reset in the LCDMsgTypeTimer code below
GLCD_SetTextColor(tscr);
GLCD_SetBackColor(screenColor);
GLCD_Clear(screenColor);
// Added by Matthew Ibarra 2/2/2013
int xPos = 0;
// Note that srand() & rand() require the use of malloc() and should not be used unless you are using
// MALLOC_VERSION==1
#if MALLOC_VERSION==1
srand((unsigned) 55); // initialize the random number generator to the same seed for repeatability
#endif
curLine = 5;
// This task should never exit
for(;;)
{
#ifdef INSPECT_STACK
CurrentStackLeft = uxTaskGetStackHighWaterMark(NULL);
float remainingStack = CurrentStackLeft;
remainingStack /= lcdSTACK_SIZE;
if (remainingStack < 0.10) {
// If the stack is really low, stop everything because we don't want it to run out
VT_HANDLE_FATAL_ERROR(0);
}
#endif
#if LCD_EXAMPLE_OP==0
// Wait for a message
if (xQueueReceive(lcdPtr->inQ,(void *) &msgBuffer,portMAX_DELAY) != pdTRUE) {
VT_HANDLE_FATAL_ERROR(0);
}
#if EXAMPLE_COLOR_CHANGE==1
//Log that we are processing a message -- more explanation of logging is given later on
vtITMu8(vtITMPortLCDMsg,getMsgType(&msgBuffer));
vtITMu8(vtITMPortLCDMsg,getMsgLength(&msgBuffer));
// Take a different action depending on the type of the message that we received
switch(getMsgType(&msgBuffer)) {
case LCDMsgTypePrint: {
// This will result in the text printing in the last five lines of the screen
char lineBuffer[lcdCHAR_IN_LINE+1];
copyMsgString(lineBuffer,&msgBuffer,lcdCHAR_IN_LINE);
// clear the line
GLCD_ClearLn(curLine,1);
// show the text
GLCD_DisplayString(curLine,0,1,(unsigned char *)lineBuffer);
curLine++;
if (curLine == lcdNUM_LINES) {
curLine = 5;
}
break;
}
case LCDMsgTypeTimer: {
// Note: if I cared how long the timer update was I would call my routine
// unpackTimerMsg() which would unpack the message and get that value
// Each timer update will cause a circle to be drawn on the top half of the screen
// as explained below
if (timerCount == 0) {
/* ************************************************** */
// Find a new color for the screen by randomly (within limits) selecting HSL values
// This can be ignored unless you care about the color map
#if MALLOC_VERSION==1
hue = rand() % 360;
sat = (rand() % 1024) / 1023.0; sat = sat * 0.5; sat += 0.5;
light = (rand() % 1024) / 1023.0; light = light * 0.8; light += 0.10;
#else
hue = (hue + 1); if (hue >= 360) hue = 0;
sat+=0.01; if (sat > 1.0) sat = 0.20;
light+=0.03; if (light > 1.0) light = 0.20;
#endif
screenColor = hsl2rgb(hue,sat,light);
// Now choose a complementary value for the text color
hue += 180;
if (hue >= 360) hue -= 360;
tscr = hsl2rgb(hue,sat,light);
GLCD_SetTextColor(tscr);
GLCD_SetBackColor(screenColor);
// End of playing around with figuring out a random color
/* ************************************************** */
// clear the top half of the screen
GLCD_ClearWindow(0,0,320,120,screenColor);
// Now we are going to draw a circle in the upper left corner of the screen
int count = 200;
float radius;
float inc, val, offset = MAX_RADIUS;
unsigned short circleColor;
inc = 2*M_PI/count;
xmax = 0;
ymax = 0;
xmin = 50000;
ymin = 50000;
val = 0.0;
for (i=0;i<count;i++) {
// Make the circle a little thicker
// by actually drawing three circles w/ different radii
float cv = cos(val), sv=sin(val);
circleColor = (val*0xFFFF)/(2*M_PI);
GLCD_SetTextColor(circleColor);
for (radius=MAX_RADIUS-2.0;radius<=MAX_RADIUS;radius+=1.0) {
x = round(cv*radius+offset);
y = round(sv*radius+offset);
if (x > xmax) xmax = x;
if (y > ymax) ymax = y;
if (x < xmin) xmin = x;
if (y < ymin) ymin = y;
GLCD_PutPixel(x,y);
}
val += inc;
}
// Now we are going to read the upper left square of the LCD's
// memory (see its data sheet for details on that) and save
// that into a buffer for fast re-drawing later
if (((xmax+1-xmin)*(ymax+1-ymin)) > BUF_LEN) {
// Make sure we have room for the data
VT_HANDLE_FATAL_ERROR(0);
}
unsigned short int *tbuffer = buffer;
unsigned int width = (xmax+1-xmin);
for (j=ymin;j<=ymax;j++) {
GLCD_GetPixelRow (xmin,j,width,tbuffer);
tbuffer += width;
}
// end of reading in the buffer
xoffset = xmin;
yoffset = ymin;
} else {
// We are going to write out the data read into the buffer
// back onto the screen at a new location
// This is *very* fast
// First, clear out where we were
GLCD_ClearWindow(xoffset,yoffset,xmax+1-xmin,ymax+1-ymin,screenColor);
// Pick the new location
#if MALLOC_VERSION==1
xoffset = rand() % (320-(xmax+1-xmin));
yoffset = rand() % (120-(ymax+1-ymin));
#else
xoffset = (xoffset + 10) % (320-(xmax+1-xmin));
yoffset = (yoffset + 10) % (120-(ymax+1-ymin));
#endif
// Draw the bitmap
GLCD_Bitmap(xoffset,yoffset,xmax+1-xmin,ymax-1-ymin,(unsigned char *)buffer);
}
timerCount++;
if (timerCount >= 40) {
// every so often, we reset timer count and start again
// This isn't for any important reason, it is just to for this example code to do "stuff"
timerCount = 0;
}
break;
}
default: {
// In this configuration, we are only expecting to receive timer messages
VT_HANDLE_FATAL_ERROR(getMsgType(&msgBuffer));
break;
}
} // end of switch()
#endif
#if MILESTONE_1==1
// Added by Matthew Ibarra 2/2/2013
if(timerCount==0) {
GLCD_Clear(screenColor);
// Draw the vertical gridlines onto the LCD
int i;
for(i = 320/6; i < 315; i = i + 320/6) {
GLCD_ClearWindow(i, 0, 1, 240, Red);
}
// Draw the vertical gridlines onto the LCD
for(i = 240/4; i < 235; i = i + 240/4) {
GLCD_ClearWindow(0, i, 320, 1, Red);
}
//Output Scale on LCD
GLCD_DisplayString(29, 0, 0, (unsigned char*) "V/div=2.5 s/div=3");
timerCount++;
}
int adcValue;
getMsgValue(&adcValue, &msgBuffer);
int displayValue;
displayValue = 120 - (adcValue * 120)/(0x100);
GLCD_ClearWindow(xPos, displayValue, 2, 2, Black);
xPos += 2;
if(xPos > 320) {
timerCount = 0;
xPos = 0;
}
#endif
// Here is a way to do debugging output via the built-in hardware -- it requires the ULINK cable and the
// debugger in the Keil tools to be connected. You can view PORT0 output in the "Debug(printf) Viewer"
// under "View->Serial Windows". You have to enable "Trace" and "Port0" in the Debug setup options. This
// should not be used if you are using Port0 for printf()
// There are 31 other ports and their output (and port 0's) can be seen in the "View->Trace->Records"
// windows. You have to enable the prots in the Debug setup options. Note that unlike ITM_SendChar()
// this "raw" port write is not blocking. That means it can overrun the capability of the system to record
// the trace events if you go too quickly; that won't hurt anything or change the program execution and
// you can tell if it happens because the "View->Trace->Records" window will show there was an overrun.
//vtITMu16(vtITMPortLCD,screenColor);
#elif LCD_EXAMPLE_OP==1
// In this alternate version, we just keep redrawing a series of bitmaps as
// we receive timer messages
// Wait for a message
if (xQueueReceive(lcdPtr->inQ,(void *) &msgBuffer,portMAX_DELAY) != pdTRUE) {
VT_HANDLE_FATAL_ERROR(0);
}
if (getMsgType(&msgBuffer) != LCDMsgTypeTimer) {
// In this configuration, we are only expecting to receive timer messages
VT_HANDLE_FATAL_ERROR(getMsgType(&msgBuffer));
}
/* go through a bitmap that is really a series of bitmaps */
picIndex = (picIndex + 1) % 9;
GLCD_Bmp(99,99,120,45,(unsigned char *) &ARM_Ani_16bpp[picIndex*(120*45*2)]);
#else
Bad setting
#endif
}
}
