examples/eeprom: With no VID/PID/desc/serial, print eeprom content

of all FTDI devices found with default VID/PID

diff --git a/examples/eeprom.c b/examples/eeprom.c
index 022cf03..e947c00 100644 (file)
--- a/examples/eeprom.c
+++ b/examples/eeprom.c
@@ -11,22 +11,76 @@
 #include <getopt.h>
 #include <ftdi.h>
 
+int read_decode_eeprom(struct ftdi_context *ftdi)
+{
+    int i, j, f;
+    int value;
+    int size;
+    unsigned char buf[256];
+
+    f = ftdi_read_eeprom(ftdi);
+    if (f < 0)
+    {
+        fprintf(stderr, "ftdi_read_eeprom: %d (%s)\n",
+                f, ftdi_get_error_string(ftdi));
+        return -1;
+    }
+
+
+    ftdi_get_eeprom_value(ftdi, CHIP_SIZE, & value);
+    if (value <0)
+    {
+        fprintf(stderr, "No EEPROM found\n");
+        return -1;
+    }
+    fprintf(stderr, "Chip type %d ftdi_eeprom_size: %d\n", ftdi->type, value);
+    if (ftdi->type == TYPE_R)
+        size = 0xa0;
+    else
+        size = value;
+    ftdi_get_eeprom_buf(ftdi, buf, size);
+    for (i=0; i < size; i += 16)
+    {
+        fprintf(stdout,"0x%03x:", i);
+
+        for (j = 0; j< 8; j++)
+            fprintf(stdout," %02x", buf[i+j]);
+        fprintf(stdout," ");
+        for (; j< 16; j++)
+            fprintf(stdout," %02x", buf[i+j]);
+        fprintf(stdout," ");
+        for (j = 0; j< 8; j++)
+            fprintf(stdout,"%c", isprint(buf[i+j])?buf[i+j]:'.');
+        fprintf(stdout," ");
+        for (; j< 16; j++)
+            fprintf(stdout,"%c", isprint(buf[i+j])?buf[i+j]:'.');
+        fprintf(stdout,"\n");
+    }
+
+    f = ftdi_eeprom_decode(ftdi, 1);
+    if (f < 0)
+    {
+        fprintf(stderr, "ftdi_eeprom_decode: %d (%s)\n",
+                f, ftdi_get_error_string(ftdi));
+        return -1;
+    }
+    return 0;
+}
+
 int main(int argc, char **argv)
 {
     struct ftdi_context *ftdi;
-    unsigned char buf[256];
-    int f, i, j;
-    int vid = 0x0403;
-    int pid = 0x6010;
+    int f, i;
+    int vid = 0;
+    int pid = 0;
     char const *desc    = 0;
     char const *serial  = 0;
     int erase = 0;
     int use_defaults = 0;
     int large_chip = 0;
     int do_write = 0;
-    int size;
-    int value;
     int retval = 0;
+    int value;
 
     if ((ftdi = ftdi_new()) == 0)
     {
@@ -83,23 +137,60 @@ int main(int argc, char **argv)
     // Select first interface
     ftdi_set_interface(ftdi, INTERFACE_ANY);
 
-    // Open device
-    f = ftdi_usb_open_desc(ftdi, vid, pid, desc, serial);
-    if (f < 0)
+    if (!vid && !pid && desc == NULL && serial == NULL)
     {
-        fprintf(stderr, "Device VID 0x%04x PID 0x%04x", vid, pid);
-        if (desc)
-            fprintf(stderr, " Desc %s", desc);
-        if (serial)
-            fprintf(stderr, " Serial %s", serial);
-        fprintf(stderr, "\n");
-        fprintf(stderr, "unable to open ftdi device: %d (%s)\n",
-                f, ftdi_get_error_string(ftdi));
-
-        retval = -1;
-        goto done;
+        struct ftdi_device_list *devlist, *curdev;
+        int res;
+        if ((res = ftdi_usb_find_all(ftdi, &devlist, 0, 0)) < 0)
+        {
+            fprintf(stderr, "No FTDI with default VID/PID found\n");
+            retval =  EXIT_FAILURE;
+            goto do_deinit;
+        }
+        if (res > 1)
+        {
+            int i = 1;
+            fprintf(stderr, "%d FTDI devices found: Only Readout on EEPROM done. ",res);
+            fprintf(stderr, "Use VID/PID/desc/serial to select device\n");
+            for (curdev = devlist; curdev != NULL; curdev= curdev->next, i++)
+            {
+                f = ftdi_usb_open_dev(ftdi,  curdev->dev);
+                if (f<0)
+                {
+                    fprintf(stderr, "Unable to open device %d: (%s)",
+                            i, ftdi_get_error_string(ftdi));
+                    continue;
+                }
+                fprintf(stderr, "Decoded values of device %d:\n", i);
+                read_decode_eeprom(ftdi);
+                ftdi_usb_close(ftdi);
+            }
+            ftdi_list_free(&devlist);
+            retval = EXIT_SUCCESS;
+            goto do_deinit;
+        }
+        f = ftdi_usb_open_dev(ftdi,  devlist[0].dev);
+        ftdi_list_free(&devlist);
+    }
+    else
+    {
+        // Open device
+        f = ftdi_usb_open_desc(ftdi, vid, pid, desc, serial);
+        if (f < 0)
+        {
+            fprintf(stderr, "Device VID 0x%04x PID 0x%04x", vid, pid);
+            if (desc)
+                fprintf(stderr, " Desc %s", desc);
+            if (serial)
+                fprintf(stderr, " Serial %s", serial);
+            fprintf(stderr, "\n");
+            fprintf(stderr, "unable to open ftdi device: %d (%s)\n",
+                    f, ftdi_get_error_string(ftdi));
+            
+            retval = -1;
+            goto done;
+        }
     }
-
     if (erase)
     {
         f = ftdi_erase_eeprom(ftdi); /* needed to determine EEPROM chip type */
@@ -185,58 +276,10 @@ int main(int argc, char **argv)
             goto done;
         }
     }
-    f = ftdi_read_eeprom(ftdi);
-    if (f < 0)
-    {
-        fprintf(stderr, "ftdi_read_eeprom: %d (%s)\n",
-                f, ftdi_get_error_string(ftdi));
-        retval = -1;
-        goto done;
-    }
-
-
-    ftdi_get_eeprom_value(ftdi, CHIP_SIZE, & value);
-    if (value <0)
-    {
-        fprintf(stderr, "No EEPROM found\n");
-        retval = -1;
-        goto done;
-
-    }
-    fprintf(stderr, "Chip type %d ftdi_eeprom_size: %d\n", ftdi->type, value);
-    if (ftdi->type == TYPE_R)
-        size = 0xa0;
-    else
-        size = value;
-    ftdi_get_eeprom_buf(ftdi, buf, size);
-    for (i=0; i < size; i += 16)
-    {
-        fprintf(stdout,"0x%03x:", i);
-
-        for (j = 0; j< 8; j++)
-            fprintf(stdout," %02x", buf[i+j]);
-        fprintf(stdout," ");
-        for (; j< 16; j++)
-            fprintf(stdout," %02x", buf[i+j]);
-        fprintf(stdout," ");
-        for (j = 0; j< 8; j++)
-            fprintf(stdout,"%c", isprint(buf[i+j])?buf[i+j]:'.');
-        fprintf(stdout," ");
-        for (; j< 16; j++)
-            fprintf(stdout,"%c", isprint(buf[i+j])?buf[i+j]:'.');
-        fprintf(stdout,"\n");
-    }
-
-    f = ftdi_eeprom_decode(ftdi, 1);
-    if (f < 0)
-    {
-        fprintf(stderr, "ftdi_eeprom_decode: %d (%s)\n",
-                f, ftdi_get_error_string(ftdi));
-        retval = -1;
-    }
-
+    retval = read_decode_eeprom(ftdi);
 done:
     ftdi_usb_close(ftdi);
+do_deinit:
     ftdi_free(ftdi);
     return retval;
 }