Hiroshi Narimatsu
This program show jpeg file in microSD card, run on Nucleo and Aitendo 2.4 inch TFT shield.
Dependencies: AitendoTFT SDFileSystem TinyJpgDec mbed
Fork of
SDFileSystem_HelloWorld
by 
mbed official
Revision 1:28ab8d9ab8e4, committed 2014-04-30
- Comitter:
- h_nari
- Date:
- Wed Apr 30 08:07:51 2014 +0000
- Parent:
- 0:bdbd3d6fc5d5
- Commit message:
- First Version
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/AitendoTFT.lib Wed Apr 30 08:07:51 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/h_nari/code/AitendoTFT/#f53f19ac1457
--- a/SDFileSystem.lib Fri Dec 07 11:25:01 2012 +0000 +++ b/SDFileSystem.lib Wed Apr 30 08:07:51 2014 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/mbed_official/code/SDFileSystem/#c8f66dc765d4 +http://mbed.org/users/mbed_official/code/SDFileSystem/#7b35d1709458
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TinyJpgDec.lib Wed Apr 30 08:07:51 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/humlet/code/TinyJpgDec/#b6f284347a66
--- a/main.cpp Fri Dec 07 11:25:01 2012 +0000
+++ b/main.cpp Wed Apr 30 08:07:51 2014 +0000
@@ -1,19 +1,88 @@
#include "mbed.h"
#include "SDFileSystem.h"
-
-SDFileSystem sd(p5, p6, p7, p8, "sd"); // the pinout on the mbed Cool Components workshop board
-
-int main() {
- printf("Hello World!\n");
-
- mkdir("/sd/mydir", 0777);
-
- FILE *fp = fopen("/sd/mydir/sdtest.txt", "w");
- if(fp == NULL) {
- error("Could not open file for write\n");
+#include "AitendoTFT.h"
+#include "TinyJpgDec.h"
+
+AitendoTFT tft;
+SDFileSystem sd(SPI_MOSI, SPI_MISO, SPI_SCK, SPI_CS, "sd"); // the pinout on the mbed Cool Components workshop board
+
+JDEC jdec;
+WORD work[3100/sizeof(WORD)];
+FileHandle *fh;
+
+UINT jpeg_input_func(JDEC *jd, BYTE *buff, UINT ndata)
+{
+ if(buff) {
+ size_t n = fh->read(buff, ndata);
+ return n == (size_t)-1 ? 0 : n;
+ } else {
+ off_t t = fh->lseek( ndata, SEEK_CUR);
+ return t == (off_t)-1 ? 0 : ndata;
}
- fprintf(fp, "Hello fun SD Card World!");
- fclose(fp);
-
- printf("Goodbye World!\n");
+}
+
+UINT jpeg_output_func(JDEC *jd, void *bitmap, JRECT *rect)
+{
+ WORD *src = (WORD *)bitmap;
+ int x0 = rect->left;
+ int x1 = rect->right;
+ int y0 = rect->top;
+ int y1 = rect->bottom;
+ int w = x1 - x0 + 1;
+
+ if(y0 >= AitendoTFT::TFT_HEIGHT ||x0 >= AitendoTFT::TFT_WIDTH)
+ return 1;
+
+ if(x1 > AitendoTFT::TFT_WIDTH-1) x1 = AitendoTFT::TFT_WIDTH - 1;
+ if(y1 > AitendoTFT::TFT_HEIGHT-1) y1 = AitendoTFT::TFT_HEIGHT - 1;
+
+ if(x0 == 0)
+ printf("\r %d", y0);
+
+ for(int y= y0; y <= y1; y++) {
+ tft.setPos(x0, y);
+ WORD *p = src + w * (y - y0);
+ for(int x=x0; x <= x1; x++)
+ tft.put(*p++);
+ }
+ return 1;
}
+
+int main()
+{
+ JRESULT r;
+ int cFile;
+ char path[80];
+
+
+ printf("Nucleo Picture Viewer\n");
+
+ while(1) {
+ cFile = 0;
+ DirHandle *dh = sd.opendir("/images");
+ if(dh == NULL)
+ error("/images not found.\n");
+ else {
+ while(1) {
+ struct dirent *de = dh->readdir();
+ if(de == NULL) break;
+ char *ext = strrchr(de->d_name,'.');
+ if(ext == NULL || strcmp(ext,".jpg")!=0) continue;
+ cFile++;
+ snprintf(path, sizeof path, "images/%s", de->d_name);
+ printf("\nshow %s\n", path);
+ fh = sd.open(path, 0);
+ if(fh == NULL) error("%s not found.",path);
+
+ r = jd_prepare(&jdec, jpeg_input_func, work, sizeof work, fh);
+ if(r != JDR_OK) error("jd_prepare error:%d", r);
+ r = jd_decomp(&jdec, jpeg_output_func, 0);
+ fh->close();
+ if( r != JDR_OK) error("jd_decomp error:%d", r);
+ wait(10);
+ }
+ dh->closedir();
+ }
+ if(cFile == 0) error("no .jpg file found in /images");
+ }
+}
--- a/mbed.bld Fri Dec 07 11:25:01 2012 +0000 +++ b/mbed.bld Wed Apr 30 08:07:51 2014 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/mbed_official/code/mbed/builds/63cdd78b2dc1 \ No newline at end of file +http://mbed.org/users/mbed_official/code/mbed/builds/6473597d706e \ No newline at end of file