Revert "Import files from .tar.gz that are missing from upstream git repo."

test/test-pad.c

Index: test/test-pad.c
diff --git a/test/test-pad.c b/test/test-pad.c
new file mode 100644
index 0000000000000000000000000000000000000000..f4c27e9322231236c5ae92d745cd3aeb333509ca
--- /dev/null
+++ b/test/test-pad.c
@@ -0,0 +1,121 @@
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+int
+getbyte(int fd, unsigned char *b)
+{
+    return(read(fd, b, 1) == 1);
+}
+
+int
+putbyte(int fd, unsigned char b)
+{
+    unsigned char ack;
+
+    printf("write %02X\n", b);
+    if (write(fd, &b, 1) != 1) {
+	fprintf(stderr, "error write: %s\n", strerror(errno));
+	return 0;
+    }
+
+    if (!getbyte(fd, &ack)) {
+	fprintf(stderr, "error read: %s\n", strerror(errno));
+	return 0;
+    }
+    printf("read %02X\n", ack);
+
+    if (ack != 0xFA) {
+	fprintf(stderr, "error ack\n");
+	return 0;
+    }
+
+    return 1;
+}
+
+int
+special_cmd(int fd, unsigned char cmd)
+{
+    int i;
+
+    if (putbyte(fd, 0xE6))
+	for (i = 0; i < 4; i++) {
+	    printf("special_cmd %i\n", i);
+	    if ((!putbyte(fd, 0xE8)) || (!putbyte(fd, (cmd>>6)&0x3)))
+		return 0;
+	    cmd<<=2;
+	}
+    else
+	return 0;
+    return 1;
+}
+
+int
+send_cmd(int fd, unsigned char cmd)
+{
+    return (special_cmd(fd, cmd) &&
+	    putbyte(fd, 0xE9));
+}
+
+int
+identify(int fd, unsigned long int *ident)
+{
+    unsigned char id[3];
+
+    if (send_cmd(fd, 0x00) &&
+	getbyte(fd, &id[0]) &&
+	getbyte(fd, &id[1]) &&
+	getbyte(fd, &id[2])) {
+	*ident = (id[0]<<16)|(id[1]<<8)|id[2];
+	printf("ident %06X\n", *ident);
+	return 1;
+    } else {
+	fprintf(stderr, "error identify\n");
+	return 0;
+    }
+}
+
+int
+reset(int fd)
+{
+    unsigned char r[2];
+
+    if (!putbyte(fd, 0xFF)) {
+	fprintf(stderr, "error reset\n");
+	return 0;
+    }
+
+    sleep(5);
+
+    if (getbyte(fd, &r[0]) && getbyte(fd, &r[1]))
+	if (r[0] == 0xAA && r[1] == 0x00) {
+	    fprintf(stderr, "reset done\n");
+	    return 1;
+	}
+    fprintf(stderr, "error reset ack\n");
+    return 0;
+}
+
+int
+main(int argc, char* argv[])
+{
+    int fd;
+    unsigned long int ident;
+
+    fd = open("/dev/psaux", O_RDWR);
+    if (fd == -1) {
+	fprintf(stderr, "error open: %s\n", strerror(errno));
+	exit(0);
+    }
+
+    reset(fd);
+    identify(fd, &ident);
+
+    close(fd);
+
+    exit(0);
+}