# HG changeset patch
# User Mychaela Falconia <falcon@freecalypso.org>
# Date 1694126633 0
# Node ID fce3d4baa2b45c961d878a69af228fc4bae9fd21
# Parent  2e21b551b9712cc7486b7c96b0d16d9a6e9e7f76
libftmini: implement EEPROM write

diff -r 2e21b551b971 -r fce3d4baa2b4 libftmini/Makefile
--- a/libftmini/Makefile	Thu Sep 07 08:58:16 2023 +0000
+++ b/libftmini/Makefile	Thu Sep 07 22:43:53 2023 +0000
@@ -1,6 +1,6 @@
 CC=	gcc
 CFLAGS=	-O2
-OBJS=	eeprom_rd.o
+OBJS=	eeprom_rd.o eeprom_wr.o
 LIB=	libftmini.a
 
 all:	${LIB}
diff -r 2e21b551b971 -r fce3d4baa2b4 libftmini/eeprom_wr.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libftmini/eeprom_wr.c	Thu Sep 07 22:43:53 2023 +0000
@@ -0,0 +1,24 @@
+/* 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);
+	}
+}
diff -r 2e21b551b971 -r fce3d4baa2b4 libftmini/ftdi_tune.h
--- a/libftmini/ftdi_tune.h	Thu Sep 07 08:58:16 2023 +0000
+++ b/libftmini/ftdi_tune.h	Thu Sep 07 22:43:53 2023 +0000
@@ -1,7 +1,9 @@
 /*
  * libftdi-0.20 passes ftdi->usb_read_timeout as the last argument to
  * usb_control_msg(); this setting is initialized to 5000 in ftdi_init()
- * and never changed in practice.  Replicate this magic definition.
+ * and never changed in practice.  Ditto for ftdi->usb_write_timeout.
+ * Replicate these magic definitions.
  */
 
 #define	USB_READ_TIMEOUT	5000
+#define	USB_WRITE_TIMEOUT	5000