FreeCalypso > hg > fc-usbser-tools
view libftmini/eeprom_wr.c @ 39:b9ecfa54fe2b
fc-duart28-conf: replace find and check-eeprom with single show command
The original design with separate find and check-eeprom commands
was driven by the assumption that we had to bump off the ftdi_sio driver
in order to read the EEPROM, while a USB device tree check could be done
non-invasively. However, now that we know that we can read the EEPROM
non-invasively too, we can simplify the tool with a single show command.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sun, 10 Sep 2023 19:21:20 +0000 |
parents | fce3d4baa2b4 |
children |
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/* elementary FTDI EEPROM write function */ #include <sys/types.h> #include <stdio.h> #include <stdlib.h> #include <usb.h> #include "ftdi_defs.h" #include "ftdi_tune.h" #include "eeprom_func.h" void ftmini_write_eeprom_loc(usb_dev_handle *usbh, u_short addr, u_short val) { int rc; rc = usb_control_msg(usbh, FTDI_DEVICE_OUT_REQTYPE, SIO_WRITE_EEPROM_REQUEST, val, addr, NULL, 0, USB_WRITE_TIMEOUT); if (rc != 0) { fprintf(stderr, "EEPROM write error: usb_control_msg() returned %d\n", rc); exit(1); } }