#include <termios.h>
#include <fcntl.h>
#include <signal.h>
-#include <usb.h>
+#include <libusb.h>
#include <getopt.h>
#define _GNU_SOURCE
#include <getopt.h>
-
-#define I_VENDOR_NUM 0x67b
-#define I_PRODUCT_NUM 0x2303
-
-
-#define VENDOR_READ_REQUEST_TYPE 0xc0
-#define VENDOR_READ_REQUEST 0x01
-
-#define VENDOR_WRITE_REQUEST_TYPE 0x40
-#define VENDOR_WRITE_REQUEST 0x01
+int get_device_vid();
+int get_device_pid();
+void check_handle(libusb_device_handle **h, int vid, int pid, const char* manuf, const char* product, const char* serial);
+int gpio_read(libusb_device_handle *h, int gpio);
+void gpio_in(libusb_device_handle *h, int gpio, int pullup);
+void gpio_out(libusb_device_handle *h, int gpio, int value);
void handle_error(int ret)
}
}
-
-/* Get current GPIO register from PL2303 */
-char gpio_read_reg(usb_dev_handle *h)
-{
- char buf;
- int bytes = usb_control_msg(
- h, // handle obtained with usb_open()
- VENDOR_READ_REQUEST_TYPE, // bRequestType
- VENDOR_READ_REQUEST, // bRequest
- 0x0081, // wValue
- 0, // wIndex
- &buf, // pointer to destination buffer
- 1, // wLength
- 100
- );
- handle_error(bytes);
- return buf;
-}
-
-void gpio_write_reg(usb_dev_handle *h, unsigned char reg)
-{
- int bytes = usb_control_msg(
- h, // handle obtained with usb_open()
- VENDOR_WRITE_REQUEST_TYPE, // bRequestType
- VENDOR_WRITE_REQUEST, // bRequest
- 1, // wValue
- reg, // wIndex
- 0, // pointer to destination buffer
- 0, // wLength
- 6000
- );
- handle_error(bytes);
-
-}
-
-int gpio_dir_shift(int gpio) {
- if (gpio == 0)
- return 4;
- if (gpio == 1)
- return 5;
- return 4; /* default to 0 */
-}
-
-int gpio_val_shift(int gpio) {
- if (gpio == 0)
- return 6;
- if (gpio == 1)
- return 7;
- return 6; /* default to 0 */
-}
-
-
-void gpio_out(usb_dev_handle *h, int gpio, int value)
-{
- int shift_dir = gpio_dir_shift(gpio);
- int shift_val = gpio_val_shift(gpio);
- unsigned char reg = gpio_read_reg(h);
- reg |= (1 << shift_dir);
- reg &= ~(1 << shift_val);
- reg |= (value << shift_val);
- gpio_write_reg(h, reg);
-}
-
-void gpio_in(usb_dev_handle *h, int gpio, int pullup)
-{
- int shift_dir = gpio_dir_shift(gpio);
- int shift_val = gpio_val_shift(gpio);
-
- unsigned char reg = gpio_read_reg(h);
- reg &= ~(1 << shift_dir);
- reg &= ~(1 << shift_val);
- reg |= (pullup << shift_val);
- gpio_write_reg(h, reg);
-}
-
-int gpio_read(usb_dev_handle *h, int gpio)
-{
- unsigned char r = gpio_read_reg(h);
- int shift = gpio_val_shift(gpio);
- return (r & (1<<shift));
-}
-
static struct option long_options[] =
{
/* These options set a flag. */
- {"help", no_argument, 0, 'h'},
- {"gpio", required_argument, 0, 'g'},
- {"in", optional_argument, 0, 'i'},
- {"out", required_argument, 0, 'o'},
- {"sleep", required_argument, 0, 's'},
- {"read", no_argument, 0, 'r'},
+ {"help", no_argument, 0, 'h'},
+ {"gpio", required_argument, 0, 'g'},
+ {"in", optional_argument, 0, 'i'},
+ {"out", required_argument, 0, 'o'},
+ {"sleep", required_argument, 0, 's'},
+ {"read", no_argument, 0, 'r'},
+ {"product", required_argument, 0, 'p'},
+ {"manuf", required_argument, 0, 'm'},
+ {"serial", required_argument, 0, 'n'},
{0, 0, 0, 0}
};
void usage(const char *self)
{
- printf("PL2303HXA userspace GPIO control tool\n"
+ printf("PL2303HXA/CP2103 userspace GPIO control tool\n"
"(c) Andrew 'Necromant' Andrianov 2014, License: GPLv3\n"
"Usage: %s [action1] [action2] ...\n"
"Options are: \n"
- "\t -g/--gpio n - select GPIO, n=0, 1\n"
- "\t -i/--in - configure GPIO as input\n"
- "\t -o/--out v - configure GPIO as output with value v\n"
- "\t -r/--read v - Read current GPIO value\n\n"
- "\t -s/--sleep v - Delay for v ms\n\n"
+ "\t --product=blah - Use device with this 'product' string\n"
+ "\t --serial=blah - Use device with this 'serial' string\n"
+ "\t --manuf=blah - Use device with this 'manufacturer' string\n"
+ "\t -g/--gpio n - select GPIO, n=0, 1\n"
+ "\t -i/--in - configure GPIO as input\n"
+ "\t -o/--out v - configure GPIO as output with value v\n"
+ "\t -r/--read v - Read current GPIO value\n\n"
+ "\t -s/--sleep v - Delay for v ms\n\n"
"Examples: \n"
"\t%s --gpio=1 --out 1\n"
"\t%s --gpio=0 --out 0 --gpio=1 --in\n\n"
"\n", self, self, self, self);
}
-extern usb_dev_handle *nc_usb_open(int vendor, int product, char *vendor_name, char *product_name, char *serial);
-void check_handle(usb_dev_handle **h)
-{
- if (*h)
- return;
-
- /* TODO: Make a proper way to select different PL2303 devices. */
- *h = nc_usb_open(I_VENDOR_NUM, I_PRODUCT_NUM, NULL, NULL, NULL);
- if (!(*h)) {
- fprintf(stderr, "No PL2303 USB device %04x:%04x found ;(\n", I_VENDOR_NUM, I_PRODUCT_NUM);
- exit(1);
- }
-
- /* We don't set config or claim interface, pl2303 kernel driver does
- * that for us.
- */
-}
-
int main(int argc, char* argv[])
{
- char c;
- usb_dev_handle *h = NULL;
+ int c;
+ libusb_device_handle *h = NULL;
int gpio=0;
+ const char *product = NULL;
+ const char *manuf = NULL;
+ const char *serial = NULL;
if (argc == 1)
{
usage(argv[0]);
switch (c)
{
+ case 'p':
+ product = optarg;
+ break;
+ case 'm':
+ manuf = optarg;
+ break;
+ case 'n':
+ serial = optarg;
+ break;
case 'h':
usage(argv[0]);
exit(1);
case 'i':
{
int v=0;
- check_handle(&h);
+ check_handle(&h, get_device_vid(), get_device_pid(), manuf, product, serial);
if (optarg)
v = atoi(optarg);
gpio_in(h, gpio, v);
case 'o':
{
int v=0;
- check_handle(&h);
+ check_handle(&h, get_device_vid(), get_device_pid(), manuf, product, serial);
if (optarg)
v = atoi(optarg);
gpio_out(h, gpio, v);
}
case 'r':
{
- check_handle(&h);
+ check_handle(&h, get_device_vid(), get_device_pid(), manuf, product, serial);
printf("%d\n", gpio_read(h, gpio) ? 1 : 0);
break;
}
projects / pub / pl2303-ft232-gpio.git / blobdiff