The Best / FT800_3

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Fork of FT800_3 by david childs

FT_Hal_Utils.cpp@5:c0ffdb08b8a5, 2014-09-25 (annotated)

Committer:
dreschpe
Date:
Thu Sep 25 20:32:21 2014 +0000
Revision:
5:c0ffdb08b8a5
Parent:
4:363ec27cdfaa
Child:
6:16e22c789f7d
add fadein fadeout backlite

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dreschpe 4:363ec27cdfaa 1 #include "FT_Platform.h"
dreschpe 4:363ec27cdfaa 2 #include "mbed.h"
dreschpe 4:363ec27cdfaa 3
dreschpe 4:363ec27cdfaa 4 /* function to load jpg file from filesystem */
dreschpe 4:363ec27cdfaa 5 /* return 0 if jpg is ok */
dreschpe 4:363ec27cdfaa 6 /* return x_size and y_size of jpg */
dreschpe 4:363ec27cdfaa 7
dreschpe 4:363ec27cdfaa 8 int FT800::Load_jpg(char* filename, ft_int16_t* x_size, ft_int16_t* y_size)
dreschpe 4:363ec27cdfaa 9 {
dreschpe 4:363ec27cdfaa 10 unsigned char pbuff[8291];
dreschpe 4:363ec27cdfaa 11 unsigned short marker;
dreschpe 4:363ec27cdfaa 12 unsigned short length;
dreschpe 4:363ec27cdfaa 13 unsigned char data[4];
dreschpe 4:363ec27cdfaa 14
dreschpe 4:363ec27cdfaa 15 ft_uint16_t blocklen;
dreschpe 4:363ec27cdfaa 16
dreschpe 4:363ec27cdfaa 17 FILE *fp = fopen(filename, "r");
dreschpe 4:363ec27cdfaa 18 if(fp == NULL) return (-1); // connot open file
dreschpe 4:363ec27cdfaa 19
dreschpe 4:363ec27cdfaa 20 // search for 0xFFC0 marker
dreschpe 4:363ec27cdfaa 21 fseek(fp, 0, SEEK_END);
dreschpe 4:363ec27cdfaa 22 unsigned int Fsize = ftell(fp);
dreschpe 4:363ec27cdfaa 23 fseek(fp, 2, SEEK_SET);
dreschpe 4:363ec27cdfaa 24 fread(data,4,1,fp);
dreschpe 4:363ec27cdfaa 25 marker = data[0] << 8 | data[1];
dreschpe 4:363ec27cdfaa 26 length = data[2] << 8 | data[3];
dreschpe 4:363ec27cdfaa 27 do {
dreschpe 4:363ec27cdfaa 28 if(marker == 0xFFC0) break;
dreschpe 4:363ec27cdfaa 29 if(marker & 0xFF00 != 0xFF00) break;
dreschpe 4:363ec27cdfaa 30 if (fseek(fp, length - 2,SEEK_CUR) != 0) break;
dreschpe 4:363ec27cdfaa 31 fread(data,4,1,fp);
dreschpe 4:363ec27cdfaa 32 marker = data[0] << 8 | data[1];
dreschpe 4:363ec27cdfaa 33 length = data[2] << 8 | data[3];
dreschpe 4:363ec27cdfaa 34 } while(1);
dreschpe 4:363ec27cdfaa 35 if(marker != 0xFFC0) return (-2); // no FFC0 Marker, wrong format no baseline DCT-based JPEG
dreschpe 4:363ec27cdfaa 36 fseek(fp, 1,SEEK_CUR);
dreschpe 4:363ec27cdfaa 37 fread(data,4,1,fp);
dreschpe 4:363ec27cdfaa 38 *y_size = (data[0] << 8 | data[1]);
dreschpe 4:363ec27cdfaa 39 *x_size = (data[2] << 8 | data[3]);
dreschpe 4:363ec27cdfaa 40
dreschpe 4:363ec27cdfaa 41 //if(*x_size > DispWidth || *y_size > DispHeight) return (-3); // to big to fit on screen
dreschpe 4:363ec27cdfaa 42
dreschpe 4:363ec27cdfaa 43 fseek(fp, 0, SEEK_SET);
dreschpe 4:363ec27cdfaa 44 WrCmd32(CMD_LOADIMAGE); // load a JPEG image
dreschpe 4:363ec27cdfaa 45 WrCmd32(0); //destination address of jpg decode
dreschpe 4:363ec27cdfaa 46 WrCmd32(0); //output format of the bitmap - default is rgb565
dreschpe 4:363ec27cdfaa 47 while(Fsize > 0) {
dreschpe 4:363ec27cdfaa 48 /* download the data into the command buffer by 8kb one shot */
dreschpe 4:363ec27cdfaa 49 blocklen = Fsize>8192?8192:Fsize;
dreschpe 4:363ec27cdfaa 50 /* copy the data into pbuff and then transfter it to command buffer */
dreschpe 4:363ec27cdfaa 51 fread(pbuff,1,blocklen,fp);
dreschpe 4:363ec27cdfaa 52 Fsize -= blocklen;
dreschpe 4:363ec27cdfaa 53 /* copy data continuously into command memory */
dreschpe 4:363ec27cdfaa 54 WrCmdBuf(pbuff, blocklen); //alignment is already taken care by this api
dreschpe 4:363ec27cdfaa 55 }
dreschpe 4:363ec27cdfaa 56 fclose(fp);
dreschpe 4:363ec27cdfaa 57
dreschpe 4:363ec27cdfaa 58 return(0);
dreschpe 4:363ec27cdfaa 59 }
dreschpe 4:363ec27cdfaa 60
dreschpe 4:363ec27cdfaa 61
dreschpe 4:363ec27cdfaa 62 /* calibrate touch */
dreschpe 4:363ec27cdfaa 63 ft_void_t FT800::Calibrate()
dreschpe 4:363ec27cdfaa 64 {
dreschpe 4:363ec27cdfaa 65 /*************************************************************************/
dreschpe 4:363ec27cdfaa 66 /* Below code demonstrates the usage of calibrate function. Calibrate */
dreschpe 4:363ec27cdfaa 67 /* function will wait untill user presses all the three dots. Only way to*/
dreschpe 4:363ec27cdfaa 68 /* come out of this api is to reset the coprocessor bit. */
dreschpe 4:363ec27cdfaa 69 /*************************************************************************/
dreschpe 4:363ec27cdfaa 70 {
dreschpe 4:363ec27cdfaa 71
dreschpe 4:363ec27cdfaa 72 DLstart(); // start a new display command list
dreschpe 4:363ec27cdfaa 73 DL(CLEAR_COLOR_RGB(64,64,64)); // set the clear color R, G, B
dreschpe 4:363ec27cdfaa 74 DL(CLEAR(1,1,1)); // clear buffers -> color buffer,stencil buffer, tag buffer
dreschpe 4:363ec27cdfaa 75 DL(COLOR_RGB(0xff,0xff,0xff)); // set the current color R, G, B
dreschpe 4:363ec27cdfaa 76 Text((DispWidth/2), (DispHeight/2), 27, OPT_CENTER, "Please Tap on the dot"); // draw Text at x,y, font 27, centered
dreschpe 4:363ec27cdfaa 77 Calibrate(0); // start the calibration of touch screen
dreschpe 4:363ec27cdfaa 78 Flush_Co_Buffer(); // download the commands into FT800 FIFO
dreschpe 4:363ec27cdfaa 79 WaitCmdfifo_empty(); // Wait till coprocessor completes the operation
dreschpe 4:363ec27cdfaa 80 }
dreschpe 4:363ec27cdfaa 81 }
dreschpe 4:363ec27cdfaa 82
dreschpe 5:c0ffdb08b8a5 83
dreschpe 5:c0ffdb08b8a5 84 /* API to give fadeout effect by changing the display PWM from 100 till 0 */
dreschpe 5:c0ffdb08b8a5 85 ft_void_t FT800::fadeout()
dreschpe 5:c0ffdb08b8a5 86 {
dreschpe 5:c0ffdb08b8a5 87 ft_int32_t i;
dreschpe 5:c0ffdb08b8a5 88
dreschpe 5:c0ffdb08b8a5 89 for (i = 100; i >= 0; i -= 3)
dreschpe 5:c0ffdb08b8a5 90 {
dreschpe 5:c0ffdb08b8a5 91 Wr8(REG_PWM_DUTY,i);
dreschpe 5:c0ffdb08b8a5 92 Sleep(2);//sleep for 2 ms
dreschpe 5:c0ffdb08b8a5 93 }
dreschpe 5:c0ffdb08b8a5 94 }
dreschpe 5:c0ffdb08b8a5 95
dreschpe 5:c0ffdb08b8a5 96 /* API to perform display fadein effect by changing the display PWM from 0 till 100 and finally 128 */
dreschpe 5:c0ffdb08b8a5 97 ft_void_t FT800::fadein()
dreschpe 5:c0ffdb08b8a5 98 {
dreschpe 5:c0ffdb08b8a5 99 ft_int32_t i;
dreschpe 5:c0ffdb08b8a5 100
dreschpe 5:c0ffdb08b8a5 101 for (i = 0; i <=100 ; i += 3)
dreschpe 5:c0ffdb08b8a5 102 {
dreschpe 5:c0ffdb08b8a5 103 Wr8(REG_PWM_DUTY,i);
dreschpe 5:c0ffdb08b8a5 104 Sleep(2);//sleep for 2 ms
dreschpe 5:c0ffdb08b8a5 105 }
dreschpe 5:c0ffdb08b8a5 106 /* Finally make the PWM 100% */
dreschpe 5:c0ffdb08b8a5 107 i = 128;
dreschpe 5:c0ffdb08b8a5 108 Wr8(REG_PWM_DUTY,i);
dreschpe 5:c0ffdb08b8a5 109 }
dreschpe 5:c0ffdb08b8a5 110