libftdi Archives

Subject: (1.0/ftdi_eeprom/main.c/2/10): Move opening the Device before tampering with the values, Move reading the device just after opening

From: Uwe Bonnes <bon@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
To: libftdi@xxxxxxxxxxxxxxxxxxxxxxx
Date: Wed, 20 Jul 2011 11:12:31 +0200
-- 
Uwe Bonnes                bon@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Institut fuer Kernphysik  Schlossgartenstrasse 9  64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
>From 15207564a3e0c43010620ecb5d67e3b16f48489f Mon Sep 17 00:00:00 2001
From: Uwe Bonnes <bon@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
Date: Mon, 11 Jul 2011 14:57:54 +0200
Subject: Move opening the Device before tampering with the values
 Move reading the device just after opening

---
 ftdi_eeprom/main.c |   99 +++++++++++++++++++++++++--------------------------
 1 files changed, 49 insertions(+), 50 deletions(-)

diff --git a/ftdi_eeprom/main.c b/ftdi_eeprom/main.c
index 151a7d3..950bad7 100644
--- a/ftdi_eeprom/main.c
+++ b/ftdi_eeprom/main.c
@@ -203,58 +203,10 @@ int main(int argc, char *argv[])
         return EXIT_FAILURE;
     }
 
-    ftdi_eeprom_initdefaults (ftdi, cfg_getstr(cfg, "manufacturer"), 
-                              cfg_getstr(cfg, "product"), 
-                              cfg_getstr(cfg, "serial"));
-
-    eeprom_set_value(ftdi, VENDOR_ID, cfg_getint(cfg, "vendor_id"));
-    eeprom_set_value(ftdi, PRODUCT_ID, cfg_getint(cfg, "product_id"));
-
-    // TODO: Support all chip types
-    char *type = cfg_getstr(cfg, "chip_type");
-    if (!strcmp(type, "BM")) {
-        ftdi->type = TYPE_BM;
-    } else if (!strcmp(type, "R")) {
-        ftdi->type = TYPE_R;
-    } else {
-        ftdi->type = TYPE_AM;
-    }
-
-    eeprom_set_value(ftdi, SELF_POWERED, cfg_getbool(cfg, "self_powered"));
-    eeprom_set_value(ftdi, REMOTE_WAKEUP, cfg_getbool(cfg, "remote_wakeup"));
-    eeprom_set_value(ftdi, MAX_POWER, cfg_getint(cfg, "max_power"));
-
-    eeprom_set_value(ftdi, IN_IS_ISOCHRONOUS, cfg_getbool(cfg, 
"in_is_isochronous"));
-    eeprom_set_value(ftdi, OUT_IS_ISOCHRONOUS, cfg_getbool(cfg, 
"out_is_isochronous"));
-    eeprom_set_value(ftdi, SUSPEND_PULL_DOWNS, cfg_getbool(cfg, 
"suspend_pull_downs"));
-
-    eeprom_set_value(ftdi, USE_SERIAL, cfg_getbool(cfg, "use_serial"));
-    eeprom_set_value(ftdi, USE_USB_VERSION, cfg_getbool(cfg, 
"change_usb_version"));
-    eeprom_set_value(ftdi, USB_VERSION, cfg_getint(cfg, "usb_version"));
-
-
-    eeprom_set_value(ftdi, HIGH_CURRENT, cfg_getbool(cfg, "high_current"));
-    eeprom_set_value(ftdi, CBUS_FUNCTION_0, str_to_cbus(cfg_getstr(cfg, 
"cbus0"), 13));
-    eeprom_set_value(ftdi, CBUS_FUNCTION_1, str_to_cbus(cfg_getstr(cfg, 
"cbus1"), 13));
-    eeprom_set_value(ftdi, CBUS_FUNCTION_2, str_to_cbus(cfg_getstr(cfg, 
"cbus2"), 13));
-    eeprom_set_value(ftdi, CBUS_FUNCTION_3, str_to_cbus(cfg_getstr(cfg, 
"cbus3"), 13));
-    eeprom_set_value(ftdi, CBUS_FUNCTION_4, str_to_cbus(cfg_getstr(cfg, 
"cbus4"), 9));
-    int invert = 0;
-    if (cfg_getbool(cfg, "invert_rxd")) invert |= INVERT_RXD;
-    if (cfg_getbool(cfg, "invert_txd")) invert |= INVERT_TXD;
-    if (cfg_getbool(cfg, "invert_rts")) invert |= INVERT_RTS;
-    if (cfg_getbool(cfg, "invert_cts")) invert |= INVERT_CTS;
-    if (cfg_getbool(cfg, "invert_dtr")) invert |= INVERT_DTR;
-    if (cfg_getbool(cfg, "invert_dsr")) invert |= INVERT_DSR;
-    if (cfg_getbool(cfg, "invert_dcd")) invert |= INVERT_DCD;
-    if (cfg_getbool(cfg, "invert_ri")) invert |= INVERT_RI;
-    eeprom_set_value(ftdi, INVERT, invert);
-
     if (_read > 0 || _erase > 0 || _flash > 0)
     {
-        int vendor_id = 0, product_id = 0;
-        eeprom_get_value(ftdi, VENDOR_ID, &vendor_id);
-        eeprom_get_value(ftdi, PRODUCT_ID, &product_id);
+        int vendor_id = cfg_getint(cfg, "vendor_id");
+        int product_id = cfg_getint(cfg, "product_id");
 
         i = ftdi_usb_open(ftdi, vendor_id, product_id);
 
@@ -323,6 +275,53 @@ int main(int argc, char *argv[])
         goto cleanup;
     }
 
+    ftdi_eeprom_initdefaults (ftdi, cfg_getstr(cfg, "manufacturer"), 
+                              cfg_getstr(cfg, "product"), 
+                              cfg_getstr(cfg, "serial"));
+
+    eeprom_set_value(ftdi, VENDOR_ID, cfg_getint(cfg, "vendor_id"));
+    eeprom_set_value(ftdi, PRODUCT_ID, cfg_getint(cfg, "product_id"));
+
+    // TODO: Support all chip types
+    char *type = cfg_getstr(cfg, "chip_type");
+    if (!strcmp(type, "BM")) {
+        ftdi->type = TYPE_BM;
+    } else if (!strcmp(type, "R")) {
+        ftdi->type = TYPE_R;
+    } else {
+        ftdi->type = TYPE_AM;
+    }
+
+    eeprom_set_value(ftdi, SELF_POWERED, cfg_getbool(cfg, "self_powered"));
+    eeprom_set_value(ftdi, REMOTE_WAKEUP, cfg_getbool(cfg, "remote_wakeup"));
+    eeprom_set_value(ftdi, MAX_POWER, cfg_getint(cfg, "max_power"));
+
+    eeprom_set_value(ftdi, IN_IS_ISOCHRONOUS, cfg_getbool(cfg, 
"in_is_isochronous"));
+    eeprom_set_value(ftdi, OUT_IS_ISOCHRONOUS, cfg_getbool(cfg, 
"out_is_isochronous"));
+    eeprom_set_value(ftdi, SUSPEND_PULL_DOWNS, cfg_getbool(cfg, 
"suspend_pull_downs"));
+
+    eeprom_set_value(ftdi, USE_SERIAL, cfg_getbool(cfg, "use_serial"));
+    eeprom_set_value(ftdi, USE_USB_VERSION, cfg_getbool(cfg, 
"change_usb_version"));
+    eeprom_set_value(ftdi, USB_VERSION, cfg_getint(cfg, "usb_version"));
+
+
+    eeprom_set_value(ftdi, HIGH_CURRENT, cfg_getbool(cfg, "high_current"));
+    eeprom_set_value(ftdi, CBUS_FUNCTION_0, str_to_cbus(cfg_getstr(cfg, 
"cbus0"), 13));
+    eeprom_set_value(ftdi, CBUS_FUNCTION_1, str_to_cbus(cfg_getstr(cfg, 
"cbus1"), 13));
+    eeprom_set_value(ftdi, CBUS_FUNCTION_2, str_to_cbus(cfg_getstr(cfg, 
"cbus2"), 13));
+    eeprom_set_value(ftdi, CBUS_FUNCTION_3, str_to_cbus(cfg_getstr(cfg, 
"cbus3"), 13));
+    eeprom_set_value(ftdi, CBUS_FUNCTION_4, str_to_cbus(cfg_getstr(cfg, 
"cbus4"), 9));
+    int invert = 0;
+    if (cfg_getbool(cfg, "invert_rxd")) invert |= INVERT_RXD;
+    if (cfg_getbool(cfg, "invert_txd")) invert |= INVERT_TXD;
+    if (cfg_getbool(cfg, "invert_rts")) invert |= INVERT_RTS;
+    if (cfg_getbool(cfg, "invert_cts")) invert |= INVERT_CTS;
+    if (cfg_getbool(cfg, "invert_dtr")) invert |= INVERT_DTR;
+    if (cfg_getbool(cfg, "invert_dsr")) invert |= INVERT_DSR;
+    if (cfg_getbool(cfg, "invert_dcd")) invert |= INVERT_DCD;
+    if (cfg_getbool(cfg, "invert_ri")) invert |= INVERT_RI;
+    eeprom_set_value(ftdi, INVERT, invert);
+
     if (_erase > 0)
     {
         printf("FTDI erase eeprom: %d\n", ftdi_erase_eeprom(ftdi));
-- 
1.7.3.4


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