125 lines
4.1 KiB
C
125 lines
4.1 KiB
C
#ifndef usb_serial_h__
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#define usb_serial_h__
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#include <stdint.h>
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// setup
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void usb_init(void); // initialize everything
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uint8_t usb_configured(void); // is the USB port configured
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// receiving data
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int16_t usb_serial_getchar(void); // receive a character (-1 if timeout/error)
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uint8_t usb_serial_available(void); // number of bytes in receive buffer
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void usb_serial_flush_input(void); // discard any buffered input
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// transmitting data
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int8_t usb_serial_putchar(uint8_t c); // transmit a character
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int8_t usb_serial_putchar_nowait(uint8_t c); // transmit a character, do not wait
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int8_t usb_serial_write(const uint8_t *buffer, uint16_t size); // transmit a buffer
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void usb_serial_flush_output(void); // immediately transmit any buffered output
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// serial parameters
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uint32_t usb_serial_get_baud(void); // get the baud rate
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uint8_t usb_serial_get_stopbits(void); // get the number of stop bits
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uint8_t usb_serial_get_paritytype(void);// get the parity type
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uint8_t usb_serial_get_numbits(void); // get the number of data bits
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uint8_t usb_serial_get_control(void); // get the RTS and DTR signal state
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int8_t usb_serial_set_control(uint8_t signals); // set DSR, DCD, RI, etc
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// constants corresponding to the various serial parameters
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#define USB_SERIAL_DTR 0x01
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#define USB_SERIAL_RTS 0x02
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#define USB_SERIAL_1_STOP 0
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#define USB_SERIAL_1_5_STOP 1
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#define USB_SERIAL_2_STOP 2
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#define USB_SERIAL_PARITY_NONE 0
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#define USB_SERIAL_PARITY_ODD 1
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#define USB_SERIAL_PARITY_EVEN 2
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#define USB_SERIAL_PARITY_MARK 3
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#define USB_SERIAL_PARITY_SPACE 4
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#define USB_SERIAL_DCD 0x01
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#define USB_SERIAL_DSR 0x02
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#define USB_SERIAL_BREAK 0x04
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#define USB_SERIAL_RI 0x08
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#define USB_SERIAL_FRAME_ERR 0x10
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#define USB_SERIAL_PARITY_ERR 0x20
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#define USB_SERIAL_OVERRUN_ERR 0x40
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// This file does not include the HID debug functions, so these empty
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// macros replace them with nothing, so users can compile code that
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// has calls to these functions.
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#define usb_debug_putchar(c)
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#define usb_debug_flush_output()
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// Everything below this point is only intended for usb_serial.c
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#ifdef USB_SERIAL_PRIVATE_INCLUDE
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#include <avr/io.h>
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#include <avr/pgmspace.h>
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#include <avr/interrupt.h>
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#define EP_TYPE_CONTROL 0x00
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#define EP_TYPE_BULK_IN 0x81
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#define EP_TYPE_BULK_OUT 0x80
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#define EP_TYPE_INTERRUPT_IN 0xC1
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#define EP_TYPE_INTERRUPT_OUT 0xC0
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#define EP_TYPE_ISOCHRONOUS_IN 0x41
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#define EP_TYPE_ISOCHRONOUS_OUT 0x40
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#define EP_SINGLE_BUFFER 0x02
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#define EP_DOUBLE_BUFFER 0x06
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#define EP_SIZE(s) ((s) == 64 ? 0x30 : \
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((s) == 32 ? 0x20 : \
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((s) == 16 ? 0x10 : \
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0x00)))
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#define MAX_ENDPOINT 4
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#define LSB(n) (n & 255)
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#define MSB(n) ((n >> 8) & 255)
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#if defined(__AVR_AT90USB162__)
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#define HW_CONFIG()
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#define PLL_CONFIG() (PLLCSR = ((1<<PLLE)|(1<<PLLP0)))
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#define USB_CONFIG() (USBCON = (1<<USBE))
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#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK)))
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#elif defined(__AVR_ATmega32U4__)
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#define HW_CONFIG() (UHWCON = 0x01)
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#define PLL_CONFIG() (PLLCSR = 0x12)
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#define USB_CONFIG() (USBCON = ((1<<USBE)|(1<<OTGPADE)))
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#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK)))
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#elif defined(__AVR_AT90USB646__)
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#define HW_CONFIG() (UHWCON = 0x81)
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#define PLL_CONFIG() (PLLCSR = 0x1A)
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#define USB_CONFIG() (USBCON = ((1<<USBE)|(1<<OTGPADE)))
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#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK)))
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#elif defined(__AVR_AT90USB1286__)
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#define HW_CONFIG() (UHWCON = 0x81)
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#define PLL_CONFIG() (PLLCSR = 0x16)
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#define USB_CONFIG() (USBCON = ((1<<USBE)|(1<<OTGPADE)))
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#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK)))
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#endif
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// standard control endpoint request types
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#define GET_STATUS 0
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#define CLEAR_FEATURE 1
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#define SET_FEATURE 3
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#define SET_ADDRESS 5
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#define GET_DESCRIPTOR 6
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#define GET_CONFIGURATION 8
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#define SET_CONFIGURATION 9
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#define GET_INTERFACE 10
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#define SET_INTERFACE 11
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// HID (human interface device)
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#define HID_GET_REPORT 1
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#define HID_GET_PROTOCOL 3
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#define HID_SET_REPORT 9
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#define HID_SET_IDLE 10
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#define HID_SET_PROTOCOL 11
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// CDC (communication class device)
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#define CDC_SET_LINE_CODING 0x20
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#define CDC_GET_LINE_CODING 0x21
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#define CDC_SET_CONTROL_LINE_STATE 0x22
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#endif
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#endif
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