From: Peter Henn <Peter.Henn@web.de>
Date: Mon, 17 Jul 2017 01:23:08 +0000 (+0000)
Subject: Add Support for FT232R
X-Git-Tag: v0.1~7
X-Git-Url: http://git.linex4red.de/pub/pl2303-ft232-gpio.git/commitdiff_plain/7cde69e0d8f5bd8e32e34b6f6db4372f473b5a05

Add Support for FT232R

Signed-off-by: Peter Henn <Peter.Henn@web.de>
---

diff --git a/10-pl2303_cp210x_userspace.rules b/10-pl2303_cp210x_userspace.rules
index b4a35c9..16af484 100755
--- a/10-pl2303_cp210x_userspace.rules
+++ b/10-pl2303_cp210x_userspace.rules
@@ -3,3 +3,4 @@
 
 SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ATTR{idVendor}=="067b", ATTR{idProduct}=="2303", GROUP="users", MODE="0666"
 SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ATTR{idVendor}=="10c4", ATTR{idProduct}=="ea60", GROUP="users", MODE="0666"
+SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ATTR{idVendor}=="0403", ATTR{idProduct}=="6001", GROUP="users", MODE="0666"
diff --git a/Makefile b/Makefile
index 075fe8f..44b6fa7 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@ LDFLAGS = $(shell pkg-config --libs libusb-1.0)
 
 PREFIX?=/usr/local
 
-all: pl2303gpio cp2103gpio
+all: pl2303gpio cp2103gpio ft232rgpio
 
 OBJS=usb.c main.c
 pl2303gpio: $(OBJS) pl2303.o
@@ -12,12 +12,17 @@ pl2303gpio: $(OBJS) pl2303.o
 cp2103gpio: $(OBJS) cp2103.o
 	$(CC) $(CFLAGS) -Wall -Werror -I"../include" -o $(@) $(^) $(LDFLAGS)
 
+ft232rgpio: $(OBJS) ft232r.o
+	$(CC) $(CFLAGS) -Wall -Werror -I"../include" -o $(@) $(^) $(LDFLAGS)
+
 clean:
-	-rm pl2303gpio cp2103gpio
+	-rm -f pl2303gpio cp2103gpio ft232rgpio
+	-rm -f pl2303.o cp2103.o ft232r.o
 
-install: pl2303gpio cp2103gpio
-	cp pl2303gpio $(PREFIX)/bin
-	cp cp2103gpio $(PREFIX)/bin
+install: pl2303gpio cp2103gpio ft232rgpio
+	install pl2303gpio $(PREFIX)/bin
+	install cp2103gpio $(PREFIX)/bin
+	install ft232rgpio $(PREFIX)/bin
 
 install-rules:	
 	cp 10-pl2303_cp210x_userspace.rules /etc/udev/rules.d
diff --git a/ft232r.c b/ft232r.c
new file mode 100644
index 0000000..e8a558f
--- /dev/null
+++ b/ft232r.c
@@ -0,0 +1,114 @@
+#include <stdio.h>
+#include <stdlib.h>
+/* According to POSIX.1-2001 */
+#include <sys/select.h>
+#include <string.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <termios.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <libusb.h>
+#include <getopt.h>
+
+
+#define _GNU_SOURCE
+#include <getopt.h>
+
+
+#define I_VENDOR_NUM        0x0403
+#define I_PRODUCT_NUM       0x6001
+#define BITMODE_CBUS        0x20
+#define BITMODE_RESET       0x00
+
+#define FTDI_SIO_SET_BITMODE 11 /* Set the bitmode */
+#define FTDI_SIO_READ_PINS 12   /* Read pins in bitmode */
+
+#define FTDI_SIO_SET_BITMODE_REQUEST FTDI_SIO_SET_BITMODE
+#define FTDI_SIO_SET_BITMODE_REQUEST_TYPE 0x40
+
+#define FTDI_SIO_READ_PINS_REQUEST FTDI_SIO_READ_PINS
+#define FTDI_SIO_READ_PINS_REQUEST_TYPE 0xC0
+
+int get_device_vid()
+{
+	return I_VENDOR_NUM;
+}
+
+int get_device_pid()
+{
+	return I_PRODUCT_NUM;
+}
+
+/* Get current GPIO register from PL2303 */
+unsigned char gpio_read_reg(libusb_device_handle *h)
+{
+	unsigned char buf;
+	int bytes = libusb_control_transfer(
+		h,             // handle obtained with usb_open()
+		FTDI_SIO_READ_PINS_REQUEST_TYPE, // bRequestType
+		FTDI_SIO_READ_PINS_REQUEST,      // bRequest
+		0,              // wValue
+		0,              // wIndex
+		&buf,             // pointer to destination buffer
+		1,  // wLength
+		1000
+		);
+	handle_error(bytes);
+	return buf;
+}
+
+void gpio_write_reg(libusb_device_handle *h, unsigned short reg)
+{
+	int bytes = libusb_control_transfer(
+		h,             // handle obtained with usb_open()
+		FTDI_SIO_SET_BITMODE_REQUEST_TYPE, //bRequestType
+		FTDI_SIO_SET_BITMODE_REQUEST, // bRequest
+		reg,              // wValue
+		0,              // wIndex
+		0,             // pointer to destination buffer
+		0,  // wLength
+		1000
+		);
+	handle_error(bytes);
+
+}
+
+void gpio_out(libusb_device_handle *h, int gpio, int value)
+{
+	unsigned char cbus_mask;
+
+	if ((gpio < 0) || (gpio > 3))
+		return;
+
+	cbus_mask = gpio_read_reg(h);
+	cbus_mask |= ((1 << gpio) << 4);
+	if (value)
+		cbus_mask |= (1 << gpio);
+	else
+		cbus_mask &= ~(1 << gpio);
+	gpio_write_reg(h, (BITMODE_CBUS << 8) | cbus_mask);
+}
+
+void gpio_in(libusb_device_handle *h, int gpio, int pullup)
+{
+	unsigned char cbus_mask;
+
+	if ((gpio < 0) || (gpio > 3))
+		return;
+
+	cbus_mask = gpio_read_reg(h);
+	cbus_mask &= ~((1 << gpio) << 4);
+	gpio_write_reg(h, (BITMODE_CBUS << 8) | cbus_mask);
+}
+
+int gpio_read(libusb_device_handle *h, int gpio)
+{
+	unsigned char r = gpio_read_reg(h);
+
+	if ((gpio < 0) || (gpio > 3))
+		return 0;
+	return (r & (1 << gpio)) ? 1 : 0;
+}
+