The branch, master has been updated
via c1c70e13de72372627267e45ba79fa731cf6f6f7 (commit)
from 388d0297c5540f021d1e9dfa75925e4f8fae03be (commit)
- Log -----------------------------------------------------------------
commit c1c70e13de72372627267e45ba79fa731cf6f6f7
Author: Oleg Seiljus <oseiljus@xxxxxxxxxx>
Date: Tue Nov 3 17:05:01 2009 +0100
Functions for read/write of a single eeprom location
-----------------------------------------------------------------------
Summary of changes:
src/ftdi.c | 38 ++++++++++++++++++++++++++++++++++++++
src/ftdi.h | 5 ++++-
2 files changed, 42 insertions(+), 1 deletions(-)
diff --git a/src/ftdi.c b/src/ftdi.c
index 8b589eb..5051059 100644
--- a/src/ftdi.c
+++ b/src/ftdi.c
@@ -2130,6 +2130,24 @@ int ftdi_eeprom_decode(struct ftdi_eeprom *eeprom,
unsigned char *buf, int size)
}
/**
+ Read eeprom location
+
+ \param ftdi pointer to ftdi_context
+ \param eeprom_addr Address of eeprom location to be read
+ \param eeprom_val Pointer to store read eeprom location
+
+ \retval 0: all fine
+ \retval -1: read failed
+*/
+int ftdi_read_eeprom_location (struct ftdi_context *ftdi, int eeprom_addr,
unsigned short *eeprom_val)
+{
+ if (usb_control_msg(ftdi->usb_dev, FTDI_DEVICE_IN_REQTYPE,
SIO_READ_EEPROM_REQUEST, 0, eeprom_addr, (char *)eeprom_val, 2,
ftdi->usb_read_timeout) != 2)
+ ftdi_error_return(-1, "reading eeprom failed");
+
+ return 0;
+}
+
+/**
Read eeprom
\param ftdi pointer to ftdi_context
@@ -2231,6 +2249,26 @@ int ftdi_read_eeprom_getsize(struct ftdi_context *ftdi,
unsigned char *eeprom, i
}
/**
+ Write eeprom location
+
+ \param ftdi pointer to ftdi_context
+ \param eeprom_addr Address of eeprom location to be written
+ \param eeprom_val Value to be written
+
+ \retval 0: all fine
+ \retval -1: read failed
+*/
+int ftdi_write_eeprom_location(struct ftdi_context *ftdi, int eeprom_addr,
unsigned short eeprom_val)
+{
+ if (usb_control_msg(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE,
+ SIO_WRITE_EEPROM_REQUEST, eeprom_val,
eeprom_addr,
+ NULL, 0, ftdi->usb_write_timeout) != 0)
+ ftdi_error_return(-1, "unable to write eeprom");
+
+ return 0;
+}
+
+/**
Write eeprom
\param ftdi pointer to ftdi_context
diff --git a/src/ftdi.h b/src/ftdi.h
index f629821..74a397b 100644
--- a/src/ftdi.h
+++ b/src/ftdi.h
@@ -347,8 +347,11 @@ extern "C"
int ftdi_write_eeprom(struct ftdi_context *ftdi, unsigned char *eeprom);
int ftdi_erase_eeprom(struct ftdi_context *ftdi);
+ int ftdi_read_eeprom_location (struct ftdi_context *ftdi, int eeprom_addr,
unsigned short *eeprom_val);
+ int ftdi_write_eeprom_location(struct ftdi_context *ftdi, int eeprom_addr,
unsigned short eeprom_val);
+
char *ftdi_get_error_string(struct ftdi_context *ftdi);
-
+
#ifdef __cplusplus
}
#endif
hooks/post-receive
--
A library to talk to FTDI chips
--
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