Curtis Mattull
basic functional test of FT810 LCD via SPI
Diff: main.cpp
- Revision:
- 13:8f23699b9c9f
- Parent:
- 11:f6a146b62579
- Child:
- 14:52a03b4a0365
--- a/main.cpp Tue Apr 05 15:02:48 2016 +0000
+++ b/main.cpp Tue Apr 05 19:56:46 2016 +0000
@@ -11,9 +11,9 @@
** two different colored liquids. Another purpose of this program is to also read back feedback from the two ITVs, a PF3W flow meter,
** and a PSE pressure sensor. The program also interfaces with an HMI controlled by a FT810 LCD driver. The interface controls the hardware
** and displays graphics. This program was designed for the Teensy and to control the Closed Loop Controller Brew Panel prototype board.
-**
+**
** Notes : The limitations of the VERTEX2II program forced us to create a bandage when trying to write images past pixel 511. The range of VERTEX2II is 0 to 511
- so in order to draw an image further away we had to use the translate command.
+** so in order to draw an image further away we had to use the translate command.
**
** Todo :
*/
@@ -46,9 +46,10 @@
unsigned int CalVal0, CalVal1, CalVal2, CalVal3, CalVal4, curX, curY, pasX, pasY; // touchscreen calibration data and swiping variables.
float PSEpressure, PFWflowrate = 0.0; // variables to store data used in calculating flow and pressure
float ITVpressure1_feedback, ITVpressure2_feedback, ITVpressure1_user_input, ITVpressure2_user_input = 0.0; // variables to store data thats used in calculating the output and input pressure for the ITVs
+float ITVpressure1_input_scaled, ITVpressure2_input_scaled = 0.0;
float ITV1_pre, ITV1_fcal, ITV2_pre, ITV2_fcal, PFW_pre, PFW_fcal, PSE_pre, PSE_fcal = 0.0; // moving average filter variables
-static float avg1 = 0.05; // filter value for new samples
-static float avg2 = 0.95; // filter value previous samples
+static float avg1 = 0.15; // filter value for new samples
+static float avg2 = 0.85; // filter value previous samples
uint16_t ITVpressure1_input_raw, ITVpressure2_input_raw = 0; // stores the raw 16 bit reads for the ITVs
int16_t velocity, distance, touched, location, paslocation; // variables to handle the swiping and multiple pages
char buffer[50]; // temporary buffer for writing characters to the LCD
@@ -66,7 +67,7 @@
TFT.DLstart(); // start a new display command list
TFT.DL(CLEAR_COLOR_RGB(255,255,255)); // set the clear color to white
TFT.DL(CLEAR(1,1,1)); // clear buffers -> color buffer,stencil buffer, tag buffer
-
+
TFT.DL(COLOR_RGB(0x00,0x7C,0xC4)); // generate border in SMC blue, all functions are in 1/16 pixel format
TFT.DL(BEGIN(LINES));
TFT.DL(LINE_WIDTH(8 * 16));
@@ -139,12 +140,12 @@
TFT.DL(COLOR_RGB(0x00,0x7C,0xC4)); // set color to SMC blue for the text
TFT.Text(265, 200, 31, 0, "ITV 1 Pressure"); // title block for screen
TFT.DL(BEGIN(RECTS)); // draw rounded rectangle in SMC blue to act as background for where the feedback will be written
- TFT.DL(VERTEX2F(300*16,265*16));
+ TFT.DL(VERTEX2F(300*16,265*16));
TFT.DL(VERTEX2F(505*16,330*16));
TFT.DL(END());
ITVpressure1_feedback = (ITVpressure1_feedback_raw.read_u16() - 9430) * (70.0) / (48430 - 9430) + 0; // calibration and scaling math for the ITV feedback, 48430 = 20mA, 9430 = 4mA
- ITV1_fcal = ITVpressure1_feedback; // moving average filter
- ITV1_fcal *= avg1;
+ ITV1_fcal = ITVpressure1_feedback; // moving average filter
+ ITV1_fcal *= avg1;
ITV1_fcal += ITV1_pre * avg2;
ITV1_pre = ITV1_fcal;
ITVpressure1_feedback = ITV1_fcal; // store the filtered value in the feedback variable
@@ -152,7 +153,7 @@
sprintf(buffer, "%.1f", ITVpressure1_feedback); // write the feedback pressure to the screen
TFT.Text(325,275,31,0,buffer);
TFT.Text(415, 275, 31, 0, " PSI"); // write the units to the screen
-
+
TFT.DL(COLOR_RGB(255,255,255)); // controls the color of the slider bar in RGB format
TFT.FgColor(COLOR_RGB(0,124,196)); // foreground color set to SMC blue in RGB format
TFT.BgColor(COLOR_RGB(0,124,196)); // background color set to SMC blue in RGB format
@@ -165,7 +166,7 @@
/*ITV 2 and PF3W Screen Display*/
TFT.DL(COLOR_RGB(255,255,255)); // set background color to white
TFT.DL(VERTEX_TRANSLATE_X(location* 16)+12800); // translate screen writes by 12800 which is a 1/16th pixel format, this creates page 2 of the screen
- TFT.DL(BEGIN(BITMAPS)); // draw a bitmap that stores the second screens images
+ TFT.DL(BEGIN(BITMAPS)); // draw a bitmap that stores the second screens images
TFT.DL(VERTEX2II(30,75,3,0)); // write PF3W_1 image to the LCD
TFT.DL(VERTEX_TRANSLATE_X((149+location)*16)+12800); // translate right 149 pixels for third image, location controls what page the screen is on
TFT.DL(VERTEX2II(411,75,4,0)); // write PF3W_2 image to the LCD
@@ -178,7 +179,7 @@
TFT.DL(VERTEX2F(300*16,265*16));
TFT.DL(VERTEX2F(505*16,330*16));
TFT.DL(END());
-
+
ITVpressure2_feedback = (ITVpressure2_feedback_raw.read_u16()- 9365) * (70.0) / (48420 - 9365) + 0; // calibration and scaling math for the ITV feedback, 48420 = 20mA, 9365 = 4mA
ITV2_fcal = ITVpressure2_feedback; // moving average filter
ITV2_fcal *= avg1;
@@ -188,7 +189,7 @@
TFT.DL(COLOR_RGB(255,255,255)); // set color for text to white
sprintf(buffer, "%.1f", ITVpressure2_feedback); // write feedback to screen in white
TFT.Text(325,275,31,0,buffer);
- TFT.Text(415, 275, 31, 0, " PSI"); // write the units to the screen
+ TFT.Text(415, 275, 31, 0, " PSI"); // write the units to the screen
TFT.DL(COLOR_RGB(255,255,255)); // controls the color of the slider bar in RGB format
TFT.FgColor(COLOR_RGB(0,124,196)); // foreground color set to SMC blue in RGB format
TFT.BgColor(COLOR_RGB(0,124,196)); // background color set to SMC blue in RGB format
@@ -214,7 +215,7 @@
/***************************************************************************************************/
/***************************************************************************************************/
- /*ISE Screen Display*/
+ /*PSE Screen Display*/
TFT.DL(COLOR_RGB(255,255,255)); // set the background for page 3 to white
TFT.DL(VERTEX_TRANSLATE_X(location* 16)+25600); // translate screen writes by 25600 which is a 1/16th pixel format, this creates page 3 of the screen
TFT.DL(BEGIN(BITMAPS)); // create bitmap to draw images on LCD
@@ -248,7 +249,7 @@
TFT.Number(20, 450, 26, 0, distance); // write distance value to screen
TFT.Number(80, 450, 26, 0, velocity); // write velocity to screen
#endif
-
+
#ifdef Debug_Touch_File // debug the touch up load
TFT.DL(COLOR_RGB(0,0,0)); // set text color to black
int j; // loop counter
@@ -264,17 +265,17 @@
}
/****************************************************************************/
-/* This function displays the error screen when an SD card isn't detected */
+/* This function displays the error screen */
/* the function causes the screen to flash yellow and writes text to the LCD*/
/****************************************************************************/
-void error_screen_SD()
+void error_screen(ft_char8_t *str1, ft_char8_t *str2)
{
TFT.DLstart(); // start a new display command list
TFT.DL(CLEAR_COLOR_RGB(255,242,0)); // clear the screen and set the background to yellow
TFT.DL(CLEAR(1,1,1)); // clear buffers -> color buffer,stencil buffer, tag buffer
TFT.DL(COLOR_RGB(0,0,0));
- TFT.Text((TFT.DispWidth/2), 170, 31, OPT_CENTERX, "Error!"); // draw Text with font 31
- TFT.Text((TFT.DispWidth/2), 215, 31, OPT_CENTERX, "Insert SD Card!"); // draw Text with font 31
+ TFT.Text((TFT.DispWidth/2), 170, 31, OPT_CENTERX, str1); // draw Text with font 31
+ TFT.Text((TFT.DispWidth/2), 215, 31, OPT_CENTERX, str2); // draw Text with font 31
TFT.DL(DISPLAY()); // display the image
TFT.Swap(); // swap the current display list
TFT.Flush_Co_Buffer(); // download the command list into fifo
@@ -285,8 +286,8 @@
TFT.DL(CLEAR_COLOR_RGB(255,255,255)); // set clear color to white
TFT.DL(CLEAR(1,1,1)); // clear buffers -> color buffer,stencil buffer, tag buffer;
TFT.DL(COLOR_RGB(0,0,0));
- TFT.Text((TFT.DispWidth/2), 170, 31, OPT_CENTERX, "Error!"); // draw Text with font 31
- TFT.Text((TFT.DispWidth/2), 215, 31, OPT_CENTERX, "Insert SD Card!"); // draw Text with font 31
+ TFT.Text((TFT.DispWidth/2), 170, 31, OPT_CENTERX, str1); // draw Text with font 31
+ TFT.Text((TFT.DispWidth/2), 215, 31, OPT_CENTERX, str2); // draw Text with font 31
TFT.DL(DISPLAY()); // display the image
TFT.Swap(); // swap the current display list
TFT.Flush_Co_Buffer(); // download the command list into fifo
@@ -302,7 +303,7 @@
{
int i = 0; // loop counter
while(card_present.read()) { // checks for SD card, if not present hold program until a SD card is inserted
- error_screen_SD(); // write error screen to LCD
+ error_screen("Error!","Insert SD card!"); // write error screen to LCD
}
FILE *fp = fopen("/sd/TCal/TCalData.txt", "a"); // open touchscreen calibration data from SD card
fp= fopen("/sd/TCal/TCalData.txt", "r");
@@ -354,6 +355,22 @@
}
/****************************************************************************/
+/* Function that checks for a inadequate supply pressure and displays */
+/* an error */
+/****************************************************************************/
+void SupplyPressure_Check(float check1, float check2)
+{
+ while(((PSEpressure*145.0377) < (check1 - 10)) || ((PSEpressure*145.0377) < (check2 - 10))) {
+ dac1.write_u12(0); // turn off ITVs
+ dac2.write_u12(0);
+ error_screen("Supply pressure too low!", ""); // display error
+ PSEpressure = (PSEpressure_raw.read_u16() - 10440) * (1.0) / (52350 - 10440) + 0; // check for supply pressure
+ }
+ dac1.write_u12(ITVpressure1_input_raw); // restore ITV pressure
+ dac2.write_u12(ITVpressure2_input_raw);
+}
+
+/****************************************************************************/
/* Main function that tracks all of the touchscreen data and updates the */
/* screen accordingly */
/****************************************************************************/
@@ -368,80 +385,71 @@
TFT.MemWrite(REG_ROTATE, 1); // rotate screen
TFT.Rotate(1);
- Start_Screen("Starting..."); // show start screen
+ SupplyPressure_Check(0,0); // check for any supply pressure
touchscreen_Calibration(); // load touchscreen calibration data
initialize_Images(); // load and initialize images
-
+ Start_Screen("Starting..."); // show start screen
+
TFT.Track(200, 400, 375, 50, 1); // track sliders
TFT.Track(200, 400, 375, 50, 2);
TFT.Flush_Co_Buffer(); // download the command list into fifo
TFT.WaitCmdfifo_empty(); // wait till coprocessor completes the operation
-
+
while(1) {
- curY = TFT.Rd32(REG_TOUCH_SCREEN_XY)& 0xffff; // touch positions
- curX = TFT.Rd32(REG_TOUCH_SCREEN_XY)>>16;
+ curY = TFT.Rd32(REG_TOUCH_SCREEN_XY)& 0xffff; // get the current touch screen position
+ curX = TFT.Rd32(REG_TOUCH_SCREEN_XY)>>16; // if not touch the results are 0x8000 for x and y
ft_uint8_t tagval = 0; // initialize return tag value
TrackRegisterVal = TFT.Rd32(REG_TRACKER); // check if one of the two tracking fields is touched
tagval = TrackRegisterVal & 0xff; // store return tag value
// check what tag was touched
- if(1 == tagval) { // tag value for ITV1 slider touch
+ if(1 == tagval) { // tag value for ITV1 slider touch
ITVpressure1_user_input = (TrackRegisterVal>>20) * (2356.0/4095); // calculate new slider value so that the slider updates graphically
ITVpressure1_input_raw = (TrackRegisterVal>>20) * (2356.0/4095) + 590; // calculate raw 12 bit input number, includes calibration number to never go above 20mA
dac1.write_u12(ITVpressure1_input_raw); // write 12 bit number to DAC to fire the ITV
- }
-
+ ITVpressure1_input_scaled = (ITVpressure1_input_raw-590)*(70.0)/(4095)+0;
+ }
+
else if(2 == tagval) { // tag value for ITV2 slider touch
ITVpressure2_user_input = (TrackRegisterVal>>20) * (2386.0/4095); // calculate new slider value so that the slider updates graphically
ITVpressure2_input_raw = (TrackRegisterVal>>20) * (2386.0/4095) + 585; // calculate raw 12 bit input number, includes calibration number to never go above 20mA
dac2.write_u12(ITVpressure2_input_raw); // write 12 bit number to DAC to fire the ITV
- }
-
- else if (200 == tagval) {
+ ITVpressure2_input_scaled = (ITVpressure2_input_raw-590)*(70.0)/(4095)+0;
+ }
+
+ else if (200 == tagval) { // tag for the reprogram button that works by exiting the program which cases the teensy to load the bootloader
break;
- } else if(curX !=0x8000 && touched>0) {
- touched++;
- distance = curX - pasX;
- location = (int16_t)paslocation + distance;
+ } else if(curX !=0x8000 && touched>0) { // If the sceen is being touched and has been touched before and is not on a tag
+ touched++; // touched is used to determine how long the screen has beed touched for and if it is currently being touched
+ distance = curX - pasX; // find the swipe distance in pixels
+ location = (int16_t)paslocation + distance; // add the distance of the swipe to the location so the screen moves as you swipe
-
- }
-
- else if(curX !=0x8000 && !touched) {
+ } else if(curX !=0x8000 && !touched) { // If the screen is being touched but was not the pervious time through the loop then this is the starting point of the swipe
touched++;
pasX = curX;
- //
- }
-
- else if(curX ==0x8000 && touched) {
- velocity = distance/touched;
- paslocation = location;
- touched=0;
-
-
- }
-
- else {
+ } else if(curX ==0x8000 && touched) { // Not being touched currently but was touched last time through the loop
+ velocity = distance/touched; // Now that the swipe is finished we can calculate the velocity from the distance and time touched
+ paslocation = location; // Store Location data away
+ touched=0; // Reset for the next touch
+ // If not being touched
+ } else {
//page 4 location
- if (location < - 2300 && location > -2500) {
- if (velocity) {
- velocity = (location + 2400)/-5;
- location += (int16_t) velocity;
+ if (location < - 2300 && location > -2500) { // If you are close to the edge of the fourth Page
+ if (velocity) { // and you have some velocity
+ velocity = (location + 2400)/-5; // adjust velocity based on how close to the edge
+ location += (int16_t) velocity; // move the location at the speed of velocity
paslocation = location;
- }
- else {
+ } else { // velocity will become zero as you get closer to the edge when this happens finish the move
location = -2400;
}
-
}
//page 3 location
- else if (location < - 1500 && location > -1700) {
+ else if (location < - 1500 && location > -1700) { // repeat for each page
if (velocity) {
velocity = (location + 1600)/-5;
location += (int16_t) velocity;
paslocation = location;
- }
- else {
+ } else {
location = -1600;
}
@@ -452,48 +460,42 @@
velocity = (location + 800)/-5;
location += (int16_t) velocity;
paslocation = location;
- }
- else {
+ } else {
location = -800;
}
//page 1
- }
- else if (location > -100 && location < 100) {
+ } else if (location > -100 && location < 100) {
if (velocity) {
velocity = location/-5;
location += (int16_t) velocity;
paslocation = location;
- }
- else {
+ } else {
location = 0;
+
}
//no page 0
- } else if (location >60) {
- velocity = -10;
+ } else if (location >60) { // Do not allow the page screen to go to -1 page
+ velocity = -10; // Change the velocity to return
location += (int16_t) velocity;
paslocation = location;
- //no page 5
- }
- else if (location <-1700) {
- velocity = 10;
+ //no page 4
+ } else if (location <-1700) { // Do not allow the page screen to go pass top page
+ velocity = 10; // Change the velocity to return
location += (int16_t) velocity;
paslocation = location;
//between pages
- }
- else if (velocity) {
+ } else if (velocity) { // if the page is not at edge but has velocity
location += (int16_t) velocity;
paslocation = location;
- //acceleration between pages
- if (velocity >0) {
- velocity+= 2;
- }
- else {
+ if (velocity >0) { // acceleration between pages so it does not take forever
+ velocity+= 2; // increase velocity
+ } else {
velocity-= 2;
}
}
}
-
+ SupplyPressure_Check(ITVpressure1_input_scaled, ITVpressure2_input_scaled); // check to see if theres enough supply pressure for the ITVs
Main_Screen(); // paint new screen
TFT.Sleep(10); // wait 10ms for next time to repaint the screen
} // end of display loop