#ifndef _CP210X_H_
#define _CP210X_H_

#include <libusb.h>
typedef struct {
  libusb_device *device;
  libusb_device_handle *handle;
  int interface;
} CP210X;

struct cp210x_port_state {
        uint16_t mode;          /* push-pull = 1, open-drain = 0 */
        uint16_t low_power;     /* 1 = ground the pin, and disable */
        uint16_t latch;
} __attribute__((packed));

/* LOPWR MODE LATCH */
/*     0    0     0     Pin drivers are totem pole, and inital config sinks current to GND */
/*     0    0     1    Pin drivers are totem pole, and inital config sources current from VIO */
/*     0    1     0    Pin drivers are open drain, and inital config sinks current to GND */
/*     0    1     1    Pin drivers are open drain, and inital config leaves pin HI-Z (you want this for inputs) */
/*     1    X     X    Pin drivers are disabled, and pin sinks current to GND */

struct cp210x_port_config {
        struct cp210x_port_state reset;
        struct cp210x_port_state suspend;
        uint8_t enhanced_fxn;
} __attribute__((packed));


#define CP_EFXN_GPIO_0_IS_TXLED                (1 << 0)
#define CP_EFXN_GPIO_1_IS_RXLED                (1 << 1)
#define CP_EFXN_GPIO_2_IS_RS485_TX     (1 << 2)
#define CP_EFXN_UNUSED_1               (1 << 3)        /* Set to zero */
#define CP_EFXN_ENABLE_WPU             (1 << 4)        
#define CP_EFXN_UNUSED_2               (1 << 5)        /* Set to zero */
#define CP_EFXN_SERIAL_AUTOOFF         (1 << 6)        
#define CP_EFXN_GPIOL_AUTOOFF          (1 << 7)        


#define CP_PIN_RI              (1 <<  0)
#define CP_PIN_DCD             (1 <<  1)
#define CP_PIN_DTR             (1 <<  2)
#define CP_PIN_DSR             (1 <<  3)
#define CP_PIN_TXD             (1 <<  4)
#define CP_PIN_RXD             (1 <<  5)
#define CP_PIN_RTS             (1 <<  6)
#define CP_PIN_CTS             (1 <<  7)
#define CP_PIN_GPIO_0          (1 <<  8)
#define CP_PIN_GPIO_1          (1 <<  9)
#define CP_PIN_GPIO_2          (1 << 10)
#define CP_PIN_GPIO_3          (1 << 11)
#define CP_PIN_UNUSED_1                (1 << 12)
#define CP_PIN_UNUSED_2                (1 << 13)
#define CP_PIN_GPIO_SUSPEND    (1 << 14)
#define CP_PIN_GPIO_NSUSPEND   (1 << 15)

#define CP_INPUT_PINS          (CP_PIN_RXD|CP_PIN_CTS|CP_PIN_DSR|CP_PIN_RI|CP_PIN_DCD)

 




/* CP2103 GPIO */
#define CP_GPIO_0              0x01
#define CP_GPIO_1              0x02
#define CP_GPIO_2              0x04
#define CP_GPIO_3              0x08
#define CP_GPIO_MASK           (CP_GPIO_0|CP_GPIO_1|CP_GPIO_2|CP_GPIO_3)


#define        CP210X_MAX_PRODUCT_STRLEN       0x7d
#define        CP210X_MAX_SERIAL_STRLEN        0x3f
#define        CP210X_MAX_MFG_STRLEN        0x18
#define        CP210X_MAX_MAXPOWER             250


 

extern int cp210x_set_config(CP210X *c, uint8_t request, unsigned int *data, int size);
extern int cp210x_set_gpio(CP210X *c, uint8_t gpio);
extern int cp210x_set_portconf(CP210X *c, struct cp210x_port_config *config);
extern int cp210x_get_portconf(CP210X *c, struct cp210x_port_config *config);
extern int cp210x_set_dtr(CP210X *c, int on);
extern int cp210x_set_vid(CP210X *c, uint16_t vid);
extern int cp210x_set_pid(CP210X *c, uint16_t pid);
extern int cp210x_set_dev_ver(CP210X *c, uint16_t ver);
extern ssize_t cp210x_read(CP210X *c, void *buf, size_t len, unsigned int timeout);
extern int cp210x_set_mfg(CP210X *c, uint8_t *s, int len);
extern int cp210x_set_product(CP210X *c, uint8_t *s, int len);
extern int cp210x_set_serial(CP210X *c, uint8_t *s, int len);
extern int cp210x_setup(CP210X *c);
extern int cp210x_reset(CP210X *c);
extern CP210X *cp210x_open(void);
extern void cp210x_close(CP210X *c);
#endif