X-Git-Url: http://git.linex4red.de/pub/pl2303-ft232-gpio.git/blobdiff_plain/13516fc96d4f88897f182212e834869259e6d783..ab4642a6138a9032e796cfca32aefcd518814148:/cp2103.c?ds=inline

diff --git a/cp2103.c b/cp2103.c
new file mode 100644
index 0000000..5e4f61e
--- /dev/null
+++ b/cp2103.c
@@ -0,0 +1,141 @@
+#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 <usb.h>
+#include <getopt.h>
+#include <stdint.h>
+
+#define _GNU_SOURCE
+#include <getopt.h>
+
+
+#define I_VENDOR_NUM        0x10c4
+#define I_PRODUCT_NUM       0xea60
+
+
+#define VENDOR_READ_REQUEST_TYPE	0xc0
+#define VENDOR_READ_REQUEST		0x01
+
+#define VENDOR_WRITE_REQUEST_TYPE	0x40
+#define VENDOR_WRITE_REQUEST		0x01
+
+/* CP2103 GPIO */
+#define GPIO_0	0x01
+#define GPIO_1	0x02
+#define GPIO_2	0x04
+#define GPIO_3	0x08
+#define GPIO_MASK	(GPIO_0|GPIO_1|GPIO_2|GPIO_3)
+
+
+
+//GPIO_READ
+//ret = cp210x_ctlmsg(port, 0xff, 0xc0, 0x00c2, 0, gpio, 1);
+//type c0
+//value c2
+//index 0
+//buffer 1 bytes
+//length 1
+
+
+/* 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()
+		0xc0, // bRequestType
+		0xff,      // bRequest
+		0xc2,              // wValue
+		0,              // wIndex
+		&buf,             // pointer to destination buffer
+		1,  // wLength
+		100
+		);
+	handle_error(bytes);
+	return buf;
+}
+
+// GPIO_WRITE
+//request 0xff
+//type 0x40
+//value 0x37e1
+//index gpioreg
+//data NULL
+//len 0
+void gpio_write_reg(usb_dev_handle *h, uint16_t reg)
+{
+	int bytes = usb_control_msg(
+		h,             // handle obtained with usb_open()
+		0x40, // bRequestType
+		0xff,      // bRequest
+		0x37e1,              // wValue
+		reg,              // wIndex
+		0,             // pointer to destination buffer
+		0,  // wLength
+		6000
+		);
+	handle_error(bytes);
+}
+
+
+void gpio_out(usb_dev_handle *h, int gnum, int value)
+{
+
+	uint16_t gpio = 0;
+	switch (gnum) { 
+	case 0: 
+		gpio |= GPIO_0;
+		if (value) 
+			gpio |= (GPIO_0 << 8);
+		break;
+	case 1: 
+		gpio |= GPIO_1;
+		if (value) 
+			gpio |= (GPIO_1 << 8);
+		break;
+	case 2: 
+		gpio |= GPIO_2;
+		if (value) 
+			gpio |= (GPIO_2 << 8);
+		break;
+	case 3: 
+		gpio |= GPIO_3;
+		if (value) 
+			gpio |= (GPIO_3 << 8);
+		break;
+	}
+	gpio_write_reg(h, gpio);
+}
+
+void gpio_in(usb_dev_handle *h, int gpio, int pullup)
+{
+	printf("FixMe: don't know how to make pins input on cp2103\n");
+}
+
+int gpio_read(usb_dev_handle *h, int gpio)
+{
+	printf("FixMe: don't know how to read pins on cp2103\n");
+}
+
+
+extern usb_dev_handle *nc_usb_open(int vendor, int product, 
+				   const char *vendor_name, const char *product_name, const char *serial);
+void check_handle(usb_dev_handle **h, const char* manuf, const char* product, const char* serial)
+{
+	if (*h)
+		return;
+
+	*h = nc_usb_open(I_VENDOR_NUM, I_PRODUCT_NUM, manuf, product, serial);
+	if (!(*h)) {
+		fprintf(stderr, "No CP2103 USB device %04x:%04x found ;(\n", I_VENDOR_NUM, I_PRODUCT_NUM);
+		exit(1);
+	}
+}