# HG changeset patch
# User Mychaela Falconia <falcon@freecalypso.org>
# Date 1694465272 0
# Node ID ae8075bcc02907f0a4c212af93f9ce066e7ad4aa
# Parent  672c7adc8bc9142fd2887bd031ff5c8e3c27b60a
cp2102-read-baudtab program written, compiles

diff -r 672c7adc8bc9 -r ae8075bcc029 .hgignore
--- a/.hgignore	Mon Sep 11 20:38:51 2023 +0000
+++ b/.hgignore	Mon Sep 11 20:47:52 2023 +0000
@@ -3,6 +3,7 @@
 \.[oa]$
 
 ^cp2102/cp2102-decode-baudtab$
+^cp2102/cp2102-read-baudtab$
 ^cp2102/cp2102-read-eeprom$
 ^cp2102/cp2102-read-partno$
 ^cp2102/file_rw_test$
diff -r 672c7adc8bc9 -r ae8075bcc029 cp2102/Makefile
--- a/cp2102/Makefile	Mon Sep 11 20:38:51 2023 +0000
+++ b/cp2102/Makefile	Mon Sep 11 20:47:52 2023 +0000
@@ -1,6 +1,7 @@
 CC=	gcc
 CFLAGS=	-O2
-PROGS=	cp2102-decode-baudtab cp2102-read-eeprom cp2102-read-partno
+PROGS=	cp2102-decode-baudtab cp2102-read-baudtab cp2102-read-eeprom \
+	cp2102-read-partno
 NOINST=	file_rw_test
 LIBS=	../libuwrap/libuwrap.a
 
@@ -9,6 +10,7 @@
 INSTBIN=${INSTALL_PREFIX}/bin
 
 DECODE_BAUDTAB_OBJS=	decode_baudtab.o decode_baudtab_main.o intel_hex_in.o
+READ_BAUDTAB_OBJS=	decode_baudtab.o read_baudtab.o read_eeprom.o
 READ_EEPROM_OBJS=	intel_hex_out.o read_eeprom.o read_eeprom_main.o
 RW_TEST_OBJS=		intel_hex_in.o intel_hex_out.o file_rw_test.o
 
@@ -17,6 +19,9 @@
 cp2102-decode-baudtab:	${DECODE_BAUDTAB_OBJS}
 	${CC} ${CFLAGS} -o $@ ${DECODE_BAUDTAB_OBJS}
 
+cp2102-read-baudtab:	${READ_BAUDTAB_OBJS} ${LIBS}
+	${CC} ${CFLAGS} -o $@ ${READ_BAUDTAB_OBJS} ${LIBS} -lusb
+
 cp2102-read-eeprom:	${READ_EEPROM_OBJS} ${LIBS}
 	${CC} ${CFLAGS} -o $@ ${READ_EEPROM_OBJS} ${LIBS} -lusb
 
diff -r 672c7adc8bc9 -r ae8075bcc029 cp2102/read_baudtab.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cp2102/read_baudtab.c	Mon Sep 11 20:47:52 2023 +0000
@@ -0,0 +1,43 @@
+/*
+ * This program locates a CP2102 device via libusb, reads its internal
+ * 1024-byte EEPROM, decodes the baud rate table portion thereof
+ * and prints the decoded table.
+ */
+
+#include <sys/types.h>
+#include <string.h>
+#include <strings.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <usb.h>
+#include "../libuwrap/find_dev.h"
+#include "cp210x_defs.h"
+
+u_char eeprom[SIZE_EEPROM];
+
+main(argc, argv)
+	char **argv;
+{
+	struct usb_device *dev;
+	usb_dev_handle *usbh;
+
+	if (argc != 2) {
+		fprintf(stderr, "usage: %s device-selector\n", argv[0]);
+		exit(1);
+	}
+	dev = find_usbdev_by_desc_string(argv[1]);
+	if (!dev) {
+		fprintf(stderr, "error: specified USB device not found\n");
+		exit(1);
+	}
+	usbh = usb_open(dev);
+	if (!usbh) {
+		fprintf(stderr, "error: usb_open() failed\n");
+		exit(1);
+	}
+	read_eeprom(usbh);
+	usb_close(usbh);
+	decode_baud_table(stdout);
+	exit(0);
+}