Merge branch 'master' of gitlab.cs.hs-rm.de:CaroloCup/remoteproc-shm

RPROC_SHM/Makefile

+all: mem_dump shm_test
+
+mem_dump: mem_dump.o
+	gcc -Wall mem_dump.o -o mem_dump
+
+shm_test: shm_test.o
+	gcc -Wall shm_test.o -o shm_test
+
+mem_dump.o: mem_dump.c
+	gcc -c -Wall mem_dump.c
+
+shm_test.o: shm_test.c
+	gcc -c -Wall shm_test.c
+
+clean:
+	rm mem_dump shm_test *.o

RPROC_SHM/mem_dump.c

+/**
+ * Title: Test application
+ *
+ * Author: Alexander Wilhelm
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#define SIZE 32
+
+int main(void) {
+    int ret;
+    int fd;
+    char buf[32];
+    //void *shm;
+    uint8_t *shm;
+
+    unsigned long offset[] = {0x95800000, 0x99000000, 0x9d100000, 0x9f000000, 0xac000000, 0xfe400000, 0xfe600000, 0xb2049000};
+
+    fd = open("/dev/mem", O_RDWR);
+    if (fd < 0) {
+        printf("OPEN ERROR: %d\n", fd);
+    }
+
+    printf("FD opened: %d\n", fd);
+
+    for (int i = 0; i < 8; i++) {
+	    shm = mmap(NULL, sizeof(buf), PROT_READ, MAP_SHARED, fd, offset[i]);
+
+	    printf("/dev/mem mmaped: %x\n", shm);
+
+	    printf("OFFSET: %x\n", offset[i]);
+	    for (int i = 0; i < SIZE; i++) {
+		printf("%02x ", shm[i]);
+	    }
+	    printf(" ");
+	    for (int i = 0; i < SIZE; i++) {
+		printf("%c ", shm[i]);
+	    }
+	    printf("\n");
+	    munmap(shm, sizeof(buf));
+    }
+    
+    /*
+    for (int i = 0; i < 250000; i++) {
+    	printf("%x: ", offset);
+    	lseek(fd, offset, SEEK_SET);
+    	ret = read(fd, buf, 32);
+	    for (int j = 0; j < 32; j++) {
+		printf("%c ", buf[j]);
+	    }
+	
+	printf("\n");
+	offset += 32;
+    }
+    */
+
+    for (int i = 0; i < 7; i++) {
+    	printf("%x: ", offset[i]);
+    	lseek(fd, offset[i], SEEK_SET);
+    	read(fd, buf, SIZE);
+	for (int j = 0; j < SIZE; j++) {
+	    printf("%x ", buf[j]);
+	}
+	printf("\n");
+    }
+
+    if (close(fd) != 0) {
+        printf("CLOSE ERROR: %d\n", fd);
+    }
+
+    printf("FD closed: %d\n", fd);
+
+    return 0;
+}

RPROC_SHM/shm_test.c

+/**
+ * Title: Test application for Remoteproc-SHM-Driver
+ *
+ * Author: Alexander Wilhelm
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#define RPROC_FILE "/dev/rproc-shm0"
+#define MESSAGE "Hello world"
+
+int main(void) {
+    int ret;
+    int fd;
+    char *string = MESSAGE;
+    char buf[16];
+    char *shm;
+
+    fd = open(RPROC_FILE, O_RDWR);
+    if (fd < 0) {
+        printf("OPEN ERROR: %d\n", fd);
+    }
+
+    printf("FD opened: %d\n", fd);
+
+    shm = mmap(NULL, sizeof(buf), PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+
+    printf("SHM POINTER: %p\n", shm);
+    shm[0] = 'A';
+    shm[1] = 'B';
+    shm[2] = 'C';
+    shm[3] = 'D';
+    shm[4] = 'E';
+
+    msync(shm, sizeof(buf), MS_SYNC);
+
+    printf("ABC written\n");
+    printf("SHM: %c%c%c%c%c\n", shm[0], shm[1], shm[2], shm[3], shm[4]);
+
+    ret = read(fd, buf, 5);
+    printf("%d read\n", ret);
+    printf("Message: %c%c%c%c%c\n", buf[0], buf[1], buf[2], buf[3], buf[4]);
+
+
+    printf("SHM POINTER: %p\n", shm);
+    shm[0] = 'V';
+    shm[1] = 'W';
+    shm[2] = 'X';
+    shm[3] = 'Y';
+    shm[4] = 'Z';
+
+    msync(shm, sizeof(buf), MS_SYNC);
+
+    printf("ABC written\n");
+    printf("SHM: %c%c%c%c%c\n", shm[0], shm[1], shm[2], shm[3], shm[4]);
+
+    lseek(fd, 0, SEEK_SET);
+    ret = read(fd, buf, 5);
+    printf("%d read\n", ret);
+    printf("Message: %c%c%c%c%c\n", buf[0], buf[1], buf[2], buf[3], buf[4]);
+
+/*
+    ret = write(fd, string, 12);
+    printf("%d written\n", ret);
+
+    lseek(fd, 0, SEEK_SET);
+
+    ret = read(fd, &buf, 12);
+    printf("%d read; Message: %s\n", ret, buf);
+*/
+
+    ret = munmap(shm, sizeof(buf));
+    if (ret < 0) {
+	    printf("munmap Error: %d", ret);
+    }
+
+    if (close(fd) != 0) {
+        printf("CLOSE ERROR: %d\n", fd);
+    }
+
+    printf("FD closed: %d\n", fd);
+
+    return 0;
+}