Hello.
In process of firmware repairing of some FTDI-chip based device I have
found that I can't get binary identical EEPROM dumps from properly
working device and ftdi_eeprom --build_eeprom command because of
ftdi_eeprom does not support changing of device release number (byte
with addr 0x06).
I can suggest simple patch to resolve this issue:
----------------------
>From 39fcaf16858f0966e336d1ff5eaf84d1a9da03d9 Mon Sep 17 00:00:00 2001
From: Roman Lapin <lampus.lapin@xxxxxxxxx>
Date: Sat, 9 May 2020 22:30:30 +0300
Subject: [PATCH] Add release_number config support to ftdi_eeprom
---
ftdi_eeprom/main.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/ftdi_eeprom/main.c b/ftdi_eeprom/main.c
index d72f61c..0c7ac7b 100644
--- a/ftdi_eeprom/main.c
+++ b/ftdi_eeprom/main.c
@@ -223,6 +223,7 @@ int main(int argc, char *argv[])
{
CFG_INT("vendor_id", 0, 0),
CFG_INT("product_id", 0, 0),
+ CFG_INT("release_number", 0, 0),
CFG_BOOL("self_powered", cfg_true, 0),
CFG_BOOL("remote_wakeup", cfg_true, 0),
CFG_BOOL("in_is_isochronous", cfg_false, 0),
@@ -459,6 +460,8 @@ int main(int argc, char *argv[])
eeprom_set_value(ftdi, VENDOR_ID, cfg_getint(cfg, "vendor_id"));
eeprom_set_value(ftdi, PRODUCT_ID, cfg_getint(cfg, "product_id"));
+ eeprom_set_value(ftdi, RELEASE_NUMBER, cfg_getint(cfg, "release_number"));
+
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"));
--
2.26.2
----------------------
With best regards,
Roman.
--
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