Move source files into src directory

makefile-win32

@@ -18,8 +18,8 @@ OBJECTS_IMGCOMP = $(OBJ)\main.obj $(OBJ)\compare.obj $(OBJ)\dir_win.obj \
                   $(OBJ)\jpeg2mem.obj $(OBJ)\jpgfile.obj $(OBJ)\exif.obj \
                   $(OBJ)\start_raspistill.obj $(OBJ)\util.obj
 
-$(OBJECTS_IMGCOMP): $(@B).c imgcomp.h
-    $(CC) /Fo$(OBJ)\ $(CFLAGS) $(@B).c
+$(OBJECTS_IMGCOMP): src\$(@B).c imgcomp.h
+    $(CC) /Fo$(OBJ)\ $(CFLAGS) src\$(@B).c
 
 imgcomp.exe: $(OBJECTS_IMGCOMP)
     $(LINKER) $(LINKCON) -OUT:imgcomp.exe libjpeg\libjpeg.lib $(OBJECTS_IMGCOMP)

src/blink_camera_led.c

@@ -0,0 +1,111 @@
+//
+//  This program based on "How to access GPIO registers from C-code on the Raspberry-Pi
+//  Example program
+
+#define BCM2708_PERI_BASE        0x20000000
+#define GPIO_BASE                (BCM2708_PERI_BASE + 0x200000) /* GPIO controller */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <unistd.h>
+
+#define PAGE_SIZE (4*1024)
+#define BLOCK_SIZE (4*1024)
+
+int  mem_fd;
+void *gpio_map;
+
+// I/O access
+volatile unsigned *gpio;
+
+// GPIO setup macros. Always use INP_GPIO(x) before using OUT_GPIO(x) or SET_GPIO_ALT(x,y)
+#define INP_GPIO(g) *(gpio+((g)/10)) &= ~(7<<(((g)%10)*3))
+#define OUT_GPIO(g) *(gpio+((g)/10)) |=  (1<<(((g)%10)*3))
+#define SET_GPIO_ALT(g,a) *(gpio+(((g)/10))) |= (((a)<=3?(a)+4:(a)==4?3:2)<<(((g)%10)*3))
+
+#define GPIO_SET *(gpio+7)  // sets   bits which are 1 ignores bits which are 0
+#define GPIO_CLR *(gpio+10) // clears bits which are 1 ignores bits which are 0
+
+#define GPIO_SET2 *(gpio+8)  // same as GPI_SET macro, but for GPIO 32 and higher 
+#define GPIO_CLR2 *(gpio+11) // same as GPI_SET macro, but for GPIO 32 and higher 
+
+#define GET_GPIO(g) (*(gpio+13)&(1<<g)) // 0 if LOW, (1<<g) if HIGH
+
+#define GPIO_PULL *(gpio+37) // Pull up/pull down
+#define GPIO_PULLCLK0 *(gpio+38) // Pull up/pull down clock
+
+void setup_io();
+
+void printButton(int g)
+{
+	if (GET_GPIO(g)) // !=0 <-> bit is 1 <- port is HIGH=3.3V
+		printf("Button pressed!\n");
+	else // port is LOW=0V
+		printf("Button released!\n");
+}
+
+int main(int argc, char **argv)
+{
+	int g,rep;
+
+	// Set up gpi pointer for direct register access
+	setup_io();
+
+	// Switch GPIO 7..11 to output mode
+
+	/************************************************************************\
+	* You are about to change the GPIO settings of your computer.          *
+	* Mess this up and it will stop working!                               *
+	* It might be a good idea to 'sync' before running this program        *
+	* so at least you still have your code changes written to the SD-card! *
+	\************************************************************************/
+
+	// Set GPIO pins 7-11 to output
+	INP_GPIO(32); // must use INP_GPIO before we can use OUT_GPIO
+	OUT_GPIO(32);
+
+	// Turn on the camera LED once for 300 miliseconds
+	GPIO_SET2 = 1;
+	usleep(300000);
+	GPIO_CLR2 = 1;
+
+	return 0;
+
+} // main
+
+
+//
+// Set up a memory regions to access GPIO
+//
+void setup_io()
+{
+    // open /dev/mem 
+	if ((mem_fd = open("/dev/mem", O_RDWR|O_SYNC) ) < 0) {
+	    printf("can't open /dev/mem \n");
+	    exit(-1);
+	}
+
+	/* mmap GPIO */
+	gpio_map = mmap(
+		NULL,             //Any adddress in our space will do
+		BLOCK_SIZE,       //Map length
+		PROT_READ|PROT_WRITE,// Enable reading & writting to mapped memory
+		MAP_SHARED,       //Shared with other processes
+		mem_fd,           //File to map
+		GPIO_BASE         //Offset to GPIO peripheral
+	);
+
+	close(mem_fd); //No need to keep mem_fd open after mmap
+
+	if (gpio_map == MAP_FAILED) {
+		printf("mmap error %d\n", (int)gpio_map);//errno also set!
+		exit(-1);
+	}
+
+	// Always use volatile pointer!
+	gpio = (volatile unsigned *)gpio_map;
+
+
+} // setup_io