Curtis Mattull
basic functional test of FT810 LCD via SPI
main.cpp
- Committer:
- montgojj
- Date:
- 2016-04-08
- Revision:
- 14:52a03b4a0365
- Parent:
- 13:8f23699b9c9f
- Child:
- 15:25cbc8345067
File content as of revision 14:52a03b4a0365:
/*
Title Block
** Project : CLC Brew Panel
** Engineers : Justin Montgomery and Cortland Ratliff
** Processor : MK20
** Version : 1.0
** Compiler : mbed
** Date/Time : 3/27/2016
** Abstract : This program was written for a marketing panel called the Brew Panel. The purpose of this program is to control two ITVs that
** regulate two different pressure lines that control two diaphragm pumps. The two pumps then pump and generate a flow rate for
** 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.
**
** Todo :
*/
#include "mbed.h" // library #includes
#include "FT_Platform.h"
#include "FT_color.h"
#include "stdio.h"
#include "float.h"
#include "SDFileSystem.h"
#include "MCP4725.h"
#define K20 // used to simplify defining for different microcontroller platforms
//#define Program_Button // used add easy way to reprogram without using the phsyical button.
//#define Debug_Swipe // reads back touch data in real time on the screen
#ifdef K20
FT800 TFT(D11,D12,D13,D9,D8,D14); // create object for the LCD, handles all of the data passing and slave select commands (SPI)
SDFileSystem sd(D11, D12, D13, D10, "sd"); // create object for the SD card, handles all of the data passing and slave select commands (SPI)
MCP4725 dac1(D18, D19, MCP4725::ADDRESS_2); // create object for the first DAC board, handles all fo the data addressing (I2C)
MCP4725 dac2(D18, D19, MCP4725::ADDRESS_3); // create object for the second DAC board, handles all fo the data addressing (I2C)
AnalogIn PSEpressure_raw(A9); // analog 9 pin connected to the PSE input
AnalogIn PFWflowrate_raw(A8); // analog 9 pin connected to the PFW input
AnalogIn ITVpressure1_feedback_raw(A3); // analog 9 pin connected to the ITV1 input
AnalogIn ITVpressure2_feedback_raw(A2); // analog 9 pin connected to the ITV2 input
DigitalIn card_present(D7); // analog 9 pin connected to the SD card detect pin input
#endif
// global variables
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 = 0.15; // 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
uint8_t tcal[24]; // touch screen Calibration
char tstr[40]; // temp location for Touch Screen Calibration
ft_int16_t x_size, y_size; // stores size data for loaded jpegs, not currently used
unsigned int err[7] = {0,0,0,0,0,0,0}; // array to store returned values from Load_jpg function, possible future error handling
/****************************************************************************/
/* Serves as the bootup screen as the images are loaded from the SD card */
/* A spinner shows the delay */
/****************************************************************************/
ft_void_t Start_Screen(ft_char8_t *str)
{
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));
TFT.DL(VERTEX2F(0*16,0*16));
TFT.DL(VERTEX2F(799*16,0*16));
TFT.DL(VERTEX2F(799*16,0*16));
TFT.DL(VERTEX2F(799*16,479*16));
TFT.DL(VERTEX2F(799*16,479*16));
TFT.DL(VERTEX2F(0*16,479*16));
TFT.DL(VERTEX2F(0*16,479*16));
TFT.DL(VERTEX2F(0*16,0*16));
TFT.DL(END());
TFT.Text((TFT.DispWidth/2), TFT.DispHeight/2, 31, OPT_CENTERX, str); // draw Text with font 31
TFT.Text((TFT.DispWidth/2), 350, 31, OPT_CENTERX, "Brew Panel"); // draw Text with font 31
TFT.DL(COLOR_RGB(0x00,0x7C,0xC4)); // change current color
TFT.Spinner((TFT.DispWidth/2),TFT.DispHeight/4, 0,0); // draw a animated spinner
TFT.DL(DISPLAY()); // Display the image
TFT.Swap(); // Swap the current display list
TFT.Flush_Co_Buffer(); // Download the command list into fifo
TFT.WaitCmdfifo_empty(); // Wait till coprocessor completes the operation
TFT.Sleep(1000); // Wait 1s to show
}
/****************************************************************************/
/* Main screen function that writes the SD images and external hardware */
/* data to the screen, also controls the ITV pressure */
/****************************************************************************/
void Main_Screen()
{
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
#ifdef Program_Button
TFT.DL(TAG(200)); // assign TAG value 200
TFT.Button(710, 10, 76, 22, 26, 0, "Reprogram"); // generate reprogram button, only works for teensy
TFT.DL(TAG(3));
#endif
/***************************************************************************************************/
/*Border Creation*/
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));
TFT.DL(VERTEX2F(0*16,0*16));
TFT.DL(VERTEX2F(799*16,0*16));
TFT.DL(VERTEX2F(799*16,0*16));
TFT.DL(VERTEX2F(799*16,479*16));
TFT.DL(VERTEX2F(799*16,479*16));
TFT.DL(VERTEX2F(0*16,479*16));
TFT.DL(VERTEX2F(0*16,479*16));
TFT.DL(VERTEX2F(0*16,0*16));
TFT.DL(END());
/***************************************************************************************************/
/***************************************************************************************************/
/*ITV 1 Screen Display*/
TFT.DL(COLOR_RGB(255,255,255)); // set background to white
TFT.DL(VERTEX_TRANSLATE_X(location* 16)); // page 1
TFT.DL(BEGIN(BITMAPS)); // draw a bitmap that stores the first screens images
TFT.DL(VERTEX2II(265,50,0,0)); // draw logo image with bit handle 0
TFT.DL(VERTEX2II(75,50,1,0)); // draw ITV_1 image with bit handle 1
TFT.DL(VERTEX_TRANSLATE_X((149+location)*16)); // translate right 149 pixels for third image, location controls what page the screen is on
TFT.DL(VERTEX2II(511,50,2,0)); // draw ITV_2 image with bit handle 2
TFT.DL(VERTEX_TRANSLATE_X((0+location)*16)); // translate back to prevent the remaining commands from also being translated
TFT.DL(END());
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(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 += ITV1_pre * avg2;
ITV1_pre = ITV1_fcal;
ITVpressure1_feedback = ITV1_fcal; // store the filtered value in the feedback variable
TFT.DL(COLOR_RGB(255,255,255)); // set color to white for the text
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
TFT.DL(TAG(1)); // assign TAG value 1
TFT.Slider(225,375,350,30,0,ITVpressure1_user_input,2355); // generate slider that controls the output pressure of ITV1
TFT.DL(TAG(3)); // general tag assignment to prevent any tag assigning errors
/***************************************************************************************************/
/***************************************************************************************************/
/*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(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
TFT.DL(VERTEX_TRANSLATE_X((0+location)*16)+12800); // translate back to 0 for remaining screen writes
TFT.DL(END());
TFT.DL(COLOR_RGB(0x00,0x7C,0xC4)); // set text color to SMC blue, RGB format
TFT.Text(265, 200, 31, 0, "ITV 2 Pressure"); // write title block to 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(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;
ITV2_fcal += ITV2_pre * avg2;
ITV2_pre = ITV2_fcal;
ITVpressure2_feedback = ITV2_fcal; // store filtered value in feedback variable
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.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
TFT.DL(TAG(2)); // assign tag 2 to slider for ITV2
TFT.Slider(225,375,350,30,0,ITVpressure2_user_input,2387); // generate slider that controls the output pressure of ITV2
TFT.DL(TAG(3)); // general tag assignment to prevent any tag assigning errors
TFT.DL(COLOR_RGB(0x00,0x7C,0xC4)); // set color to SMC blue for text
TFT.Text(250, 20, 31, 0, "PF3W Flow Rate"); // write title block to 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*16,85*16));
TFT.DL(VERTEX2F(505*16,150*16));
PFWflowrate = (PFWflowrate_raw.read_u16() - 10355) * (40.0) / (51920 - 10355) + 0; // calibration and scaling math for the PFW feedback, 51920 = 20mA, 10355 = 4mA
PFW_fcal = PFWflowrate; // moving average filter
PFW_fcal *= avg1;
PFW_fcal += PFW_pre * avg2;
PFW_pre = PFW_fcal;
PFWflowrate = PFW_fcal; // store filtered value in feedback variable
TFT.DL(COLOR_RGB(255,255,255)); // set text feedback text color to white
sprintf(buffer, "%.1f", PFWflowrate); // write feedback to LCD
TFT.Text(305,95,31,0,buffer);
TFT.Text(385, 95, 31, 0, " L/min"); // write units to LCD
/***************************************************************************************************/
/***************************************************************************************************/
/*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
TFT.DL(VERTEX2II(265,50,0,0)); // wrtie the SMC logo to the screen
TFT.DL(VERTEX2II(75,50,5,0)); // write PSE_1 image to the screen
TFT.DL(VERTEX_TRANSLATE_X((99+location)*16)+25600); // translate right by 99 pixels for the next image write
TFT.DL(VERTEX2II(511,85,6,0)); // write PSE_2 image to the screen
TFT.DL(VERTEX_TRANSLATE_X((0+location)*16)+25600); // translate back to pixel 0 for the remaining screen writes
TFT.DL(END());
TFT.DL(COLOR_RGB(0x00,0x7C,0xC4)); // set text color to SMC blue
TFT.Text(280, 200, 31, 0, "PSE Pressure"); // write title block to 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(295*16,265*16));
TFT.DL(VERTEX2F(505*16,330*16));
TFT.DL(END());
PSEpressure = ((PSEpressure_raw.read_u16() - 10440) * (1.0) / (52350 - 10440) + 0)*145.0377; // calibration and scaling math for the PFW feedback, 52350 = 20mA, 10440 = 4mA
PSE_fcal = PSEpressure; // moving average filter
PSE_fcal *= avg1;
PSE_fcal += PSE_pre * avg2;
PSE_pre = PSE_fcal;
PSEpressure = PSE_fcal; // store the filtered value in feedback variable
TFT.DL(COLOR_RGB(255,255,255)); // set text color to white
sprintf(buffer, "%.1f", PSEpressure); // write feedback to screen
TFT.Text(300,275,31,0,buffer);
TFT.Text(405, 275, 31, 0, " PSI"); // write units to LCD
/***************************************************************************************************/
#ifdef Debug_Swipe // writes touch data to screen
TFT.DL(COLOR_RGB(0,0,0)); // set text color to black
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
for (j = 0; j < 24; j++) { // write file data to screen
TFT.Number(j*30+20, 450, 26, 0, tcal[j]);
}
#endif
TFT.DL(DISPLAY()); // display the image
TFT.Swap(); // swap the current display list
TFT.Flush_Co_Buffer(); // download the command list into fifo
TFT.WaitCmdfifo_empty(); // wait till coprocessor completes the operation
}
/****************************************************************************/
/* This function displays the error screen */
/* the function causes the screen to flash yellow and writes text to the LCD*/
/****************************************************************************/
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, 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
TFT.WaitCmdfifo_empty(); // wait till coprocessor completes the operation
TFT.Sleep(1000);
TFT.DLstart(); // start a new display command list
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, 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
TFT.WaitCmdfifo_empty(); // wait till coprocessor completes the operation
TFT.Sleep(1000);
}
/****************************************************************************/
/* Checks for an SD card and reads/writes the touchscreen calibration data */
/* from the SD card */
/****************************************************************************/
void touchscreen_Calibration()
{
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("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");
if(!fp) { // could not open file for read so generate data then store on SD card
TFT.Calibrate(); // calibrate the touch screen
TFT.read_calibrate(tcal); // read in cal data from screen
mkdir("/sd/TCal", 0777); // open file for to save calibration data
FILE *fp = fopen("/sd/TCal/TCalData.txt", "w");
for (i = 0; i < 25; i++) { // save integers one at a time to the file
fprintf(fp, "%c", tcal[i] );
}
fclose(fp); // close SD card file
} else { // file found, read in data
fread(tstr,24,1,fp);
for (i = 0; i < 24; i++) { // convert from int to char
tcal[i] = tstr[i];
}
TFT.write_calibrate(tcal); // write cal data to screen
}
}
/****************************************************************************/
/* Loads all of the images from the SD card and assigns them bitmap handles */
/****************************************************************************/
void initialize_Images()
{
while(card_present.read()) { // checks for SD card, if not present hold program until a SD card is inserted
error_screen("Error!","Insert SD card!"); // write error screen to LCD
}
TFT.DLstart(); // start a new display command list
TFT.DL(CLEAR(1,1,1)); // clear buffers -> color buffer,stencil buffer, tag buffer
TFT.DL(BITMAP_HANDLE(0)); // assign bitmap handle 0 to logo.jpg
err[0] = TFT.Load_jpg("/sd/Logo.jpg",& x_size,& y_size, 0); // load the jpg and write it to address 0 in the FT810 RAM and store error result in array
TFT.DL(BITMAP_HANDLE(1)); // assign bitmap handle 1 to ITV_1.jpg
err[1] = TFT.Load_jpg("/sd/ITV_1.jpg",& x_size,& y_size, 45000); // load the jpg and write it to address 45,000 in the FT810 RAM and store error result in array
TFT.DL(BITMAP_HANDLE(2)); // assign bitmap handle 2 to ITV_2.jpg
err[2] = TFT.Load_jpg("/sd/ITV_2.jpg",& x_size,& y_size, 60000); // load the jpg and write it to address 60,000 in the FT810 RAM and store error result in array
TFT.DL(BITMAP_HANDLE(3)); // assign bitmap handle 3 to PF3W_1.jpg
err[3] = TFT.Load_jpg("/sd/PF3W_1.jpg",& x_size,& y_size, 85000); // load the jpg and write it to address 85,000 in the FT810 RAM and store error result in array
TFT.DL(BITMAP_HANDLE(4)); // assign bitmap handle 4 to PF3W_2.jpg
err[4] = TFT.Load_jpg("/sd/PF3W_2.jpg",& x_size,& y_size, 150000); // load the jpg and write it to address 150,000 in the FT810 RAM and store error result in array
TFT.DL(BITMAP_HANDLE(5)); // assign bitmap handle 5 to PSE_1.jpg
err[5] = TFT.Load_jpg("/sd/PSE_1.jpg",& x_size,& y_size, 230000); // load the jpg and write it to address 230,000 in the FT810 RAM and store error result in array
TFT.DL(BITMAP_HANDLE(6)); // assign bitmap handle 6 to PSE_2.jpg
err[6] = TFT.Load_jpg("/sd/PSE_2.jpg",& x_size,& y_size, 260000); // load the jpg and write it to address 260,000 in the FT810 RAM and store error result in array
TFT.DL(DISPLAY()); // display the image
TFT.Swap(); // swap the current display list
TFT.Flush_Co_Buffer(); // download the command list into fifo
TFT.WaitCmdfifo_empty();
}
/****************************************************************************/
/* 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 */
/****************************************************************************/
int main()
{
dac1.wakeup(); // activate DAC boards
dac2.wakeup();
dac1.write_u12(0); // the natural DAC output value is 50% of its maximum value
dac2.write_u12(0); // the program has to immediately write a 0 to the DAC to turn off the outputs
ft_uint32_t TrackRegisterVal = 0; // touch track variable
TFT.MemWrite(REG_ROTATE, 1); // rotate screen
TFT.Rotate(1);
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) {
Main_Screen(); // paint new screen
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
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
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) { // 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) { // 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) { // 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 3 location
if (location < - 1500 && location > -1700) { // repeat for each page
if (velocity) {
velocity = (location + 1600)/-5;
location += (int16_t) velocity;
paslocation = location;
} else {
location = -1600;
}
}
//page 2
else if (location < - 700 && location > -900) {
if (velocity) {
velocity = (location + 800)/-5;
location += (int16_t) velocity;
paslocation = location;
} else {
location = -800;
}
//page 1
} else if (location > -100 && location < 100) {
if (velocity) {
velocity = location/-5;
location += (int16_t) velocity;
paslocation = location;
} else {
location = 0;
}
//no page 0
} 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 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) { // if the page is not at edge but has velocity
location += (int16_t) velocity;
paslocation = location;
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
TFT.Sleep(10); // wait 10ms for next time to repaint the screen
} // end of display loop
}