diff libftmini/eeprom_rd.c @ 14:67ecb394b24f

libftmini: starting with EEPROM read
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 07 Sep 2023 07:59:09 +0000
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libftmini/eeprom_rd.c	Thu Sep 07 07:59:09 2023 +0000
@@ -0,0 +1,26 @@
+/* elementary FTDI EEPROM read 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"
+
+u_short ftmini_read_eeprom_loc(usb_dev_handle *usbh, u_short addr)
+{
+	u_char buf[2];
+	int rc;
+
+	rc = usb_control_msg(usbh, FTDI_DEVICE_IN_REQTYPE,
+			     SIO_READ_EEPROM_REQUEST, 0, addr, (char *) buf, 2,
+			     USB_READ_TIMEOUT);
+	if (rc != 2) {
+		fprintf(stderr,
+			"EEPROM read error: usb_control_msg() returned %d\n",
+			rc);
+		exit(1);
+	}
+	return buf[0] | (buf[1] << 8);
+}