A large commit.

[pdp8.git] / sw / src / omni_usb / checkout.c

diff --git a/sw/src/omni_usb/checkout.c b/sw/src/omni_usb/checkout.c
new file mode 100644 (file)
index 0000000..7faae25
--- /dev/null
+++ b/sw/src/omni_usb/checkout.c
@@ -0,0 +1,49 @@
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+int main (int argc, char ** args){
+  int fd;
+
+  fd=open("/dev/ttyUSB0", O_RDWR);
+  if (fd<0) {
+    perror("While opening port");
+    exit(2);
+  }
+
+  int i=0;
+  for (i=0; i<0x1000;i++){
+    char t1,t2,t3;
+    t1=i&0xff;
+    int ret=write(fd,&t1,1);
+    if (ret!=1) {
+      perror("While writing to port");
+      exit(2);
+    }
+    if (i%77==0) usleep(5000);
+    if (i%355==0) usleep(50000);
+    ret=read(fd,&t2,1);
+    if (ret!=1) {
+      perror("While reading from port");
+      exit(2);
+    }
+    ret=read(fd,&t3,1);
+    if (ret!=1) {
+      perror("While reading from port");
+      exit(2);
+    }
+
+    t3=~t3;
+    if ((t1!=t2)||(t3!=t1)){
+      fprintf(stderr,"Data mismatch!!!\n");
+      fprintf(stderr,"T1: %03o T2: %03o T3: %03o\n",t1,t2,t3);
+      exit(3);
+    }
+  }
+
+  printf("Success.\n");
+
+  return 0;
+}