usb.h

#ifndef USB_H
#define USB_H 1
#include <main-header.h>
struct usb_app_packet {
  uint8_t       type;
  uint16_t      headersize; // w/o type and control packet, e.g. start_upload = 10
  uint16_t      datasize;
  uint16_t      number;
  union {
    struct {
      uint32_t  base;
      uint32_t  flags;
      uint32_t  size;
    } start_upload;
    struct {
      uint8_t   header_length;
      uint16_t  data_length;
      uint32_t  checksum;
    } data;
    struct {
      uint32_t  checksum;
      uint32_t  len;
      uint8_t   flags;
    } done;
    struct {
      uint8_t   code;
      uint32_t  extra;
    } nack;
    struct {
      uint32_t extra;
    } ack;
    struct {
      uint32_t  action;
      uint32_t  actiondata;
      uint32_t  datalen;
    } action;
  };
};
 
#define USBAPP_ERROR_DATA_CHECKSUM 1
#define USBAPP_ERROR_FLASH_FAILURE 2
#define USBAPP_ERROR_INV_PACKET 3
#define USBAPP_ERROR_PACKET_ORDER 4
#define USBAPP_ERROR_DATA_SIZE_MISMATCH 5
#define USBAPP_ERROR_DATA_SIZE_INVALID 6
#define USBAPP_ERROR_TOTAL_SIZE_MISMATCH 7
#define USBAPP_ERROR_TOTAL_CHECKSUM 8
#define USBAPP_ERROR_CURRENT_BASE 9
#define USBAPP_ERROR_ACTION 10
#define USBAPP_ERROR_DATA_BEFORE_START 11
 
int usb_appupdate();
void usb_start();
void usb_restore_irq();
void usb_byte_received(byte b);
void usb_finish_app_update();
int usb_start_app_update();
void usb_process_packet_appupdate();
int simulate_send_to_usb(int len, byte *string);
int usb_app_parse(byte *buf, int size, struct usb_app_packet *target);
void print_usb_app_packet(struct usb_app_packet *pack);
uint32_t parse32(byte *tmpbuf, int offset);
void usb_appupdate_byte_received(byte b);
#endif