--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cp2102/cp210x_defs.h	Mon Sep 11 17:41:24 2023 +0000
@@ -0,0 +1,35 @@
+/*
+ * Definitions for talking to CP2102 and perhaps other CP210x chips,
+ * taken from Python-based cp210x-program-1.0 tool from 2014,
+ * translated from Python to C.
+ */
+
+#define	CP210x_CONFIG		0xFF
+
+#define	REG_VENDOR_ID		0x3701
+#define	REG_PRODUCT_ID		0x3702
+#define	REG_PRODUCT_STRING	0x3703
+#define	REG_SERIAL_NUMBER	0x3704
+#define	REG_CFG_ATTRIBUTES	0x3705
+#define	REG_MAX_POWER		0x3706
+#define	REG_VERSION		0x3707
+#define	REG_UNKNOWN		0x3708
+#define	REG_EEPROM		0x3709
+#define	REG_LOCK_VALUE		0x370A
+#define	REG_PART_NUMBER		0x370B
+
+#define	SIZE_EEPROM		0x0400
+#define	SIZE_PRODUCT_STRING	255
+#define	SIZE_SERIAL_NUMBER	128
+#define	SIZE_BAUDRATES		32
+#define	SIZE_BAUDRATE_CFG	10
+#define	SIZE_BAUDRATE_TABLE	(SIZE_BAUDRATES * SIZE_BAUDRATE_CFG)
+#define	SIZE_VENDOR_STRING	50
+
+/* a little bit adapted from libftdi */
+
+#define DEVICE_OUT_REQTYPE (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_ENDPOINT_OUT)
+#define DEVICE_IN_REQTYPE (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_ENDPOINT_IN)
+
+#define	USB_READ_TIMEOUT	5000
+#define	USB_WRITE_TIMEOUT	5000