schneider françois / FT800okForConnectEvewithLuminosite

Ok for EveConnect

Dependents:   FT800_RGB_demo-for_ConnectEve

FT_Hal_Utils.cpp@0:352efe1d072f, 2019-03-11 (annotated)

Committer:
schnf30
Date:
Mon Mar 11 19:14:19 2019 +0000
Revision:
0:352efe1d072f
Programme demo FT800 for ConnectEve. It's Ok.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
schnf30 0:352efe1d072f 1 #include "FT_Platform.h"
schnf30 0:352efe1d072f 2 #include "mbed.h"
schnf30 0:352efe1d072f 3
schnf30 0:352efe1d072f 4 /* function to load jpg file from filesystem */
schnf30 0:352efe1d072f 5 /* return 0 if jpg is ok */
schnf30 0:352efe1d072f 6 /* return x_size and y_size of jpg */
schnf30 0:352efe1d072f 7
schnf30 0:352efe1d072f 8 int FT800::Load_jpg(char* filename, ft_int16_t* x_size, ft_int16_t* y_size)
schnf30 0:352efe1d072f 9 {
schnf30 0:352efe1d072f 10 unsigned char pbuff[8291];
schnf30 0:352efe1d072f 11 unsigned short marker;
schnf30 0:352efe1d072f 12 unsigned short length;
schnf30 0:352efe1d072f 13 unsigned char data[4];
schnf30 0:352efe1d072f 14
schnf30 0:352efe1d072f 15 ft_uint16_t blocklen;
schnf30 0:352efe1d072f 16
schnf30 0:352efe1d072f 17 FILE *fp = fopen(filename, "r");
schnf30 0:352efe1d072f 18 if(fp == NULL) return (-1); // connot open file
schnf30 0:352efe1d072f 19
schnf30 0:352efe1d072f 20 // search for 0xFFC0 marker
schnf30 0:352efe1d072f 21 fseek(fp, 0, SEEK_END);
schnf30 0:352efe1d072f 22 unsigned int Fsize = ftell(fp);
schnf30 0:352efe1d072f 23 fseek(fp, 2, SEEK_SET);
schnf30 0:352efe1d072f 24 fread(data,4,1,fp);
schnf30 0:352efe1d072f 25 marker = data[0] << 8 | data[1];
schnf30 0:352efe1d072f 26 length = data[2] << 8 | data[3];
schnf30 0:352efe1d072f 27 do {
schnf30 0:352efe1d072f 28 if(marker == 0xFFC0) break;
schnf30 0:352efe1d072f 29 if(marker & 0xFF00 != 0xFF00) break;
schnf30 0:352efe1d072f 30 if (fseek(fp, length - 2,SEEK_CUR) != 0) break;
schnf30 0:352efe1d072f 31 fread(data,4,1,fp);
schnf30 0:352efe1d072f 32 marker = data[0] << 8 | data[1];
schnf30 0:352efe1d072f 33 length = data[2] << 8 | data[3];
schnf30 0:352efe1d072f 34 } while(1);
schnf30 0:352efe1d072f 35 if(marker != 0xFFC0) return (-2); // no FFC0 Marker, wrong format no baseline DCT-based JPEG
schnf30 0:352efe1d072f 36 fseek(fp, 1,SEEK_CUR);
schnf30 0:352efe1d072f 37 fread(data,4,1,fp);
schnf30 0:352efe1d072f 38 *y_size = (data[0] << 8 | data[1]);
schnf30 0:352efe1d072f 39 *x_size = (data[2] << 8 | data[3]);
schnf30 0:352efe1d072f 40
schnf30 0:352efe1d072f 41 //if(*x_size > DispWidth || *y_size > DispHeight) return (-3); // to big to fit on screen
schnf30 0:352efe1d072f 42
schnf30 0:352efe1d072f 43 fseek(fp, 0, SEEK_SET);
schnf30 0:352efe1d072f 44 WrCmd32(CMD_LOADIMAGE); // load a JPEG image
schnf30 0:352efe1d072f 45 WrCmd32(0); //destination address of jpg decode
schnf30 0:352efe1d072f 46 WrCmd32(0); //output format of the bitmap - default is rgb565
schnf30 0:352efe1d072f 47 while(Fsize > 0) {
schnf30 0:352efe1d072f 48 /* download the data into the command buffer by 8kb one shot */
schnf30 0:352efe1d072f 49 blocklen = Fsize>8192?8192:Fsize;
schnf30 0:352efe1d072f 50 /* copy the data into pbuff and then transfter it to command buffer */
schnf30 0:352efe1d072f 51 fread(pbuff,1,blocklen,fp);
schnf30 0:352efe1d072f 52 Fsize -= blocklen;
schnf30 0:352efe1d072f 53 /* copy data continuously into command memory */
schnf30 0:352efe1d072f 54 WrCmdBuf(pbuff, blocklen); //alignment is already taken care by this api
schnf30 0:352efe1d072f 55 }
schnf30 0:352efe1d072f 56 fclose(fp);
schnf30 0:352efe1d072f 57
schnf30 0:352efe1d072f 58 return(0);
schnf30 0:352efe1d072f 59 }
schnf30 0:352efe1d072f 60
schnf30 0:352efe1d072f 61
schnf30 0:352efe1d072f 62 /* calibrate touch */
schnf30 0:352efe1d072f 63 ft_void_t FT800::Calibrate()
schnf30 0:352efe1d072f 64 {
schnf30 0:352efe1d072f 65 /*************************************************************************/
schnf30 0:352efe1d072f 66 /* Below code demonstrates the usage of calibrate function. Calibrate */
schnf30 0:352efe1d072f 67 /* function will wait untill user presses all the three dots. Only way to*/
schnf30 0:352efe1d072f 68 /* come out of this api is to reset the coprocessor bit. */
schnf30 0:352efe1d072f 69 /*************************************************************************/
schnf30 0:352efe1d072f 70 {
schnf30 0:352efe1d072f 71
schnf30 0:352efe1d072f 72 DLstart(); // start a new display command list
schnf30 0:352efe1d072f 73 DL(CLEAR_COLOR_RGB(64,64,64)); // set the clear color R, G, B
schnf30 0:352efe1d072f 74 DL(CLEAR(1,1,1)); // clear buffers -> color buffer,stencil buffer, tag buffer
schnf30 0:352efe1d072f 75 DL(COLOR_RGB(0xff,0xff,0xff)); // set the current color R, G, B
schnf30 0:352efe1d072f 76 Text((DispWidth/2), (DispHeight/2), 27, OPT_CENTER, "Appuyez sur les points"); // draw Text at x,y, font 27, centered
schnf30 0:352efe1d072f 77 Calibrate(0); // start the calibration of touch screen
schnf30 0:352efe1d072f 78 Flush_Co_Buffer(); // download the commands into FT800 FIFO
schnf30 0:352efe1d072f 79 WaitCmdfifo_empty(); // Wait till coprocessor completes the operation
schnf30 0:352efe1d072f 80 }
schnf30 0:352efe1d072f 81 }
schnf30 0:352efe1d072f 82
schnf30 0:352efe1d072f 83