OSDI
diff --git a/‎example/嵌入式Linux驅動模板精講與項目實踐/第11章/devmem2/devmem2.c‎
Lines changed: 87 additions & 66 deletions b/‎example/嵌入式Linux驅動模板精講與項目實踐/第11章/devmem2/devmem2.c‎
Lines changed: 87 additions & 66 deletions
diff --git a/‎example/嵌入式Linux驅動模板精講與項目實踐/第11章/proc/app-proc.c‎
Lines changed: 73 additions & 74 deletions b/‎example/嵌入式Linux驅動模板精講與項目實踐/第11章/proc/app-proc.c‎
Lines changed: 73 additions & 74 deletions
@@ -30,7 +30,7 @@
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
@@ -48,83 +48,104 @@
 #include <termios.h>
 #include <sys/types.h>
 #include <sys/mman.h>
-  
+
 #define FATAL do { fprintf(stderr, "Error at line %d, file %s (%d) [%s]\n", \
-  __LINE__, __FILE__, errno, strerror(errno)); exit(1); } while(0)
- 
+                               __LINE__, __FILE__, errno, strerror(errno)); exit(1); } while(0)
+
 #define MAP_SIZE 4096UL
 #define MAP_MASK (MAP_SIZE - 1)
 
-int main(int argc, char **argv) {
+int main(int argc, char** argv) {
     int fd;
-    void *map_base, *virt_addr; 
-	unsigned long read_result, writeval;
-	off_t target;
-	int access_type = 'w';
-	
-	if(argc < 2) {
-		fprintf(stderr, "\nUsage:\t%s { address } [ type [ data ] ]\n"
-			"\taddress : memory address to act upon\n"
-			"\ttype    : access operation type : [b]yte, [h]alfword, [w]ord\n"
-			"\tdata    : data to be written\n\n",
-			argv[0]);
-		exit(1);
-	}
-	target = strtoul(argv[1], 0, 0);
-
-	if(argc > 2)
-		access_type = tolower(argv[2][0]);
-
-
-    if((fd = open("/dev/mem", O_RDWR | O_SYNC)) == -1) FATAL;
-    printf("/dev/mem opened.\n"); 
+    void* map_base, *virt_addr;
+    unsigned long read_result, writeval;
+    off_t target;
+    int access_type = 'w';
+
+    if (argc < 2) {
+        fprintf(stderr, "\nUsage:\t%s { address } [ type [ data ] ]\n"
+                "\taddress : memory address to act upon\n"
+                "\ttype    : access operation type : [b]yte, [h]alfword, [w]ord\n"
+                "\tdata    : data to be written\n\n",
+                argv[0]);
+        exit(1);
+    }
+
+    target = strtoul(argv[1], 0, 0);
+
+    if (argc > 2) {
+        access_type = tolower(argv[2][0]);
+    }
+
+
+    if ((fd = open("/dev/mem", O_RDWR | O_SYNC)) == -1) {
+        FATAL;
+    }
+
+    printf("/dev/mem opened.\n");
     fflush(stdout);
-    
+
     /* Map one page */
     map_base = mmap(0, MAP_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, fd, target & ~MAP_MASK);
-    if(map_base == (void *) -1) FATAL;
-    printf("Memory mapped at address %p.\n", map_base); 
+
+    if (map_base == (void*) - 1) {
+        FATAL;
+    }
+
+    printf("Memory mapped at address %p.\n", map_base);
     fflush(stdout);
-    
+
     virt_addr = map_base + (target & MAP_MASK);
-    switch(access_type) {
-		case 'b':
-			read_result = *((unsigned char *) virt_addr);
-			break;
-		case 'h':
-			read_result = *((unsigned short *) virt_addr);
-			break;
-		case 'w':
-			read_result = *((unsigned long *) virt_addr);
-			break;
-		default:
-			fprintf(stderr, "Illegal data type '%c'.\n", access_type);
-			exit(2);
-	}
-    printf("Value at address 0x%X (%p): 0x%X\n", target, virt_addr, read_result); 
+
+    switch (access_type) {
+    case 'b':
+        read_result = *((unsigned char*) virt_addr);
+        break;
+
+    case 'h':
+        read_result = *((unsigned short*) virt_addr);
+        break;
+
+    case 'w':
+        read_result = *((unsigned long*) virt_addr);
+        break;
+
+    default:
+        fprintf(stderr, "Illegal data type '%c'.\n", access_type);
+        exit(2);
+    }
+
+    printf("Value at address 0x%X (%p): 0x%X\n", target, virt_addr, read_result);
     fflush(stdout);
 
-	if(argc > 3) {
-		writeval = strtoul(argv[3], 0, 0);
-		switch(access_type) {
-			case 'b':
-				*((unsigned char *) virt_addr) = writeval;
-				read_result = *((unsigned char *) virt_addr);
-				break;
-			case 'h':
-				*((unsigned short *) virt_addr) = writeval;
-				read_result = *((unsigned short *) virt_addr);
-				break;
-			case 'w':
-				*((unsigned long *) virt_addr) = writeval;
-				read_result = *((unsigned long *) virt_addr);
-				break;
-		}
-		printf("Written 0x%X; readback 0x%X\n", writeval, read_result); 
-		fflush(stdout);
-	}
-	
-	if(munmap(map_base, MAP_SIZE) == -1) FATAL;
+    if (argc > 3) {
+        writeval = strtoul(argv[3], 0, 0);
+
+        switch (access_type) {
+        case 'b':
+            *((unsigned char*) virt_addr) = writeval;
+            read_result = *((unsigned char*) virt_addr);
+            break;
+
+        case 'h':
+            *((unsigned short*) virt_addr) = writeval;
+            read_result = *((unsigned short*) virt_addr);
+            break;
+
+        case 'w':
+            *((unsigned long*) virt_addr) = writeval;
+            read_result = *((unsigned long*) virt_addr);
+            break;
+        }
+
+        printf("Written 0x%X; readback 0x%X\n", writeval, read_result);
+        fflush(stdout);
+    }
+
+    if (munmap(map_base, MAP_SIZE) == -1) {
+        FATAL;
+    }
+
     close(fd);
     return 0;
 }
 
@@ -1,74 +1,73 @@
-#include <stdio.h>
-#include <string.h>
-#include <signal.h>
-#include "stdlib.h"
-#include <fcntl.h>
-
-
-typedef struct iotest
-{
-    int a;
-    int b;
-    char c[4];
-}iotest;
-
-
-
-
-int g_mainthread_running = 1;
-
-void stop_handler( int signum )
-{
-    printf("User press Ctrl+C to shut down the service.\n");
-    g_mainthread_running = 0;
-    exit(0);
-}
-
-
-
-int main()
-{
-        int fd; 
-
-        char bufRead[10];
-        int cn;
-       
-	
-	signal(SIGINT, stop_handler);
-
-
-	/*打开设备文件*/
-	fd = open("/dev/chardev",O_RDWR);
-	if (fd < 0) {
-		printf("Open chardev Error!\n");
-		return -1;
-	}
-iotest ioctlTest;
-	
-      while(g_mainthread_running)
-      {
-          cn = read(fd,bufRead,2);
-          if(cn == 0)
-          { 
-              break;
-          }
-bufRead[cn] = '\0';
-//          printf("read:%c,%c\n",bufRead[0],bufRead[1]);
-          printf("read:%s\n",bufRead);
-          sleep(1);
-
-          ioctl(fd,0,NULL);
-          sleep(2);
-          ioctl(fd,1,NULL);
-          sleep(2);
-          ioctlTest.a = 11;
-          ioctlTest.b = 22;
-        
-          ioctl(fd,0x22,&ioctlTest);
-          printf("change:c[0]:%d,c[1]:%d,c[2]:%d,c[3]:%d",\
-                ioctlTest.c[0],ioctlTest.c[1],ioctlTest.c[2],ioctlTest.c[3]);
-          sleep(2);
-      }
-	
-	return 0;	
-}
+#include <stdio.h>
+#include <string.h>
+#include <signal.h>
+#include "stdlib.h"
+#include <fcntl.h>
+
+
+typedef struct iotest {
+    int a;
+    int b;
+    char c[4];
+} iotest;
+
+
+
+
+int g_mainthread_running = 1;
+
+void stop_handler(int signum) {
+    printf("User press Ctrl+C to shut down the service.\n");
+    g_mainthread_running = 0;
+    exit(0);
+}
+
+
+
+int main() {
+    int fd;
+
+    char bufRead[10];
+    int cn;
+
+
+    signal(SIGINT, stop_handler);
+
+
+    /*打开设备文件*/
+    fd = open("/dev/chardev", O_RDWR);
+
+    if (fd < 0) {
+        printf("Open chardev Error!\n");
+        return -1;
+    }
+
+    iotest ioctlTest;
+
+    while (g_mainthread_running) {
+        cn = read(fd, bufRead, 2);
+
+        if (cn == 0) {
+            break;
+        }
+
+        bufRead[cn] = '\0';
+        //          printf("read:%c,%c\n",bufRead[0],bufRead[1]);
+        printf("read:%s\n", bufRead);
+        sleep(1);
+
+        ioctl(fd, 0, NULL);
+        sleep(2);
+        ioctl(fd, 1, NULL);
+        sleep(2);
+        ioctlTest.a = 11;
+        ioctlTest.b = 22;
+
+        ioctl(fd, 0x22, &ioctlTest);
+        printf("change:c[0]:%d,c[1]:%d,c[2]:%d,c[3]:%d", \
+               ioctlTest.c[0], ioctlTest.c[1], ioctlTest.c[2], ioctlTest.c[3]);
+        sleep(2);
+    }
+
+    return 0;
+}