diff options
Diffstat (limited to 'usb_serial.h')
| -rw-r--r-- | usb_serial.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/usb_serial.h b/usb_serial.h new file mode 100644 index 0000000..14c5b1a --- /dev/null +++ b/usb_serial.h @@ -0,0 +1,124 @@ +#ifndef usb_serial_h__ +#define usb_serial_h__ + +#include <stdint.h> + +// setup +void usb_init(void); // initialize everything +uint8_t usb_configured(void); // is the USB port configured + +// receiving data +int16_t usb_serial_getchar(void); // receive a character (-1 if timeout/error) +uint8_t usb_serial_available(void); // number of bytes in receive buffer +void usb_serial_flush_input(void); // discard any buffered input + +// transmitting data +int8_t usb_serial_putchar(uint8_t c); // transmit a character +int8_t usb_serial_putchar_nowait(uint8_t c); // transmit a character, do not wait +int8_t usb_serial_write(const uint8_t *buffer, uint16_t size); // transmit a buffer +void usb_serial_flush_output(void); // immediately transmit any buffered output + +// serial parameters +uint32_t usb_serial_get_baud(void); // get the baud rate +uint8_t usb_serial_get_stopbits(void); // get the number of stop bits +uint8_t usb_serial_get_paritytype(void);// get the parity type +uint8_t usb_serial_get_numbits(void); // get the number of data bits +uint8_t usb_serial_get_control(void); // get the RTS and DTR signal state +int8_t usb_serial_set_control(uint8_t signals); // set DSR, DCD, RI, etc + +// constants corresponding to the various serial parameters +#define USB_SERIAL_DTR 0x01 +#define USB_SERIAL_RTS 0x02 +#define USB_SERIAL_1_STOP 0 +#define USB_SERIAL_1_5_STOP 1 +#define USB_SERIAL_2_STOP 2 +#define USB_SERIAL_PARITY_NONE 0 +#define USB_SERIAL_PARITY_ODD 1 +#define USB_SERIAL_PARITY_EVEN 2 +#define USB_SERIAL_PARITY_MARK 3 +#define USB_SERIAL_PARITY_SPACE 4 +#define USB_SERIAL_DCD 0x01 +#define USB_SERIAL_DSR 0x02 +#define USB_SERIAL_BREAK 0x04 +#define USB_SERIAL_RI 0x08 +#define USB_SERIAL_FRAME_ERR 0x10 +#define USB_SERIAL_PARITY_ERR 0x20 +#define USB_SERIAL_OVERRUN_ERR 0x40 + +// This file does not include the HID debug functions, so these empty +// macros replace them with nothing, so users can compile code that +// has calls to these functions. +#define usb_debug_putchar(c) +#define usb_debug_flush_output() + + + +// Everything below this point is only intended for usb_serial.c +#ifdef USB_SERIAL_PRIVATE_INCLUDE +#include <avr/io.h> +#include <avr/pgmspace.h> +#include <avr/interrupt.h> + +#define EP_TYPE_CONTROL 0x00 +#define EP_TYPE_BULK_IN 0x81 +#define EP_TYPE_BULK_OUT 0x80 +#define EP_TYPE_INTERRUPT_IN 0xC1 +#define EP_TYPE_INTERRUPT_OUT 0xC0 +#define EP_TYPE_ISOCHRONOUS_IN 0x41 +#define EP_TYPE_ISOCHRONOUS_OUT 0x40 +#define EP_SINGLE_BUFFER 0x02 +#define EP_DOUBLE_BUFFER 0x06 +#define EP_SIZE(s) ((s) == 64 ? 0x30 : \ + ((s) == 32 ? 0x20 : \ + ((s) == 16 ? 0x10 : \ + 0x00))) + +#define MAX_ENDPOINT 4 + +#define LSB(n) (n & 255) +#define MSB(n) ((n >> 8) & 255) + +#if defined(__AVR_AT90USB162__) +#define HW_CONFIG() +#define PLL_CONFIG() (PLLCSR = ((1<<PLLE)|(1<<PLLP0))) +#define USB_CONFIG() (USBCON = (1<<USBE)) +#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK))) +#elif defined(__AVR_ATmega32U4__) +#define HW_CONFIG() (UHWCON = 0x01) +#define PLL_CONFIG() (PLLCSR = 0x12) +#define USB_CONFIG() (USBCON = ((1<<USBE)|(1<<OTGPADE))) +#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK))) +#elif defined(__AVR_AT90USB646__) +#define HW_CONFIG() (UHWCON = 0x81) +#define PLL_CONFIG() (PLLCSR = 0x1A) +#define USB_CONFIG() (USBCON = ((1<<USBE)|(1<<OTGPADE))) +#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK))) +#elif defined(__AVR_AT90USB1286__) +#define HW_CONFIG() (UHWCON = 0x81) +#define PLL_CONFIG() (PLLCSR = 0x16) +#define USB_CONFIG() (USBCON = ((1<<USBE)|(1<<OTGPADE))) +#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK))) +#endif + +// standard control endpoint request types +#define GET_STATUS 0 +#define CLEAR_FEATURE 1 +#define SET_FEATURE 3 +#define SET_ADDRESS 5 +#define GET_DESCRIPTOR 6 +#define GET_CONFIGURATION 8 +#define SET_CONFIGURATION 9 +#define GET_INTERFACE 10 +#define SET_INTERFACE 11 +// HID (human interface device) +#define HID_GET_REPORT 1 +#define HID_GET_PROTOCOL 3 +#define HID_SET_REPORT 9 +#define HID_SET_IDLE 10 +#define HID_SET_PROTOCOL 11 +// CDC (communication class device) +#define CDC_SET_LINE_CODING 0x20 +#define CDC_GET_LINE_CODING 0x21 +#define CDC_SET_CONTROL_LINE_STATE 0x22 +#endif +#endif |