From: Yegor Yefremov <yegorslists@xxxxxxxxxxxxxx>
Read 16-bit integer as two byte array and combine these two bytes
to unsigned short.
---
src/ftdi.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/src/ftdi.c b/src/ftdi.c
index f5d263c..fdf93fe 100644
--- a/src/ftdi.c
+++ b/src/ftdi.c
@@ -4195,12 +4195,16 @@ int ftdi_set_eeprom_user_data(struct ftdi_context
*ftdi, const char * buf, int s
*/
int ftdi_read_eeprom_location (struct ftdi_context *ftdi, int eeprom_addr,
unsigned short *eeprom_val)
{
+ unsigned char buf[2];
+
if (ftdi == NULL || ftdi->usb_dev == NULL)
ftdi_error_return(-2, "USB device unavailable");
- if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_IN_REQTYPE,
SIO_READ_EEPROM_REQUEST, 0, eeprom_addr, (unsigned char *)eeprom_val, 2,
ftdi->usb_read_timeout) != 2)
+ if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_IN_REQTYPE,
SIO_READ_EEPROM_REQUEST, 0, eeprom_addr, buf, 2, ftdi->usb_read_timeout) != 2)
ftdi_error_return(-1, "reading eeprom failed");
+ *eeprom_val = (0xff & buf[0]) | (buf[1] << 8);
+
return 0;
}
--
2.1.4
--
libftdi - see http://www.intra2net.com/en/developer/libftdi for details.
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