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67 lines
2.4 KiB
67 lines
2.4 KiB
/**
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* @file transfer.h
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* @author Dean Netherton
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* @brief A simplest implementation of common usb transfer functions, based on the CH376S chip
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* @details For a basic walkthrough of the usb protocol see https://www.beyondlogic.org/usbnutshell/usb1.shtml
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* @version 1.0
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* @date 2023-09-22
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*
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* @copyright Copyright (c) 2023
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*
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*/
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#ifndef __USBDEV_TRANSFERS
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#define __USBDEV_TRANSFERS
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#include "ch376.h"
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#include "transfers.h"
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#include <stdlib.h>
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typedef struct {
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uint8_t number : 3;
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uint16_t max_packet_sizex : 10;
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} endpoint;
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// 3 bytes
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#define COMMON_DEVICE_CONFIG \
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usb_device_type type : 4; \
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uint8_t address : 4; \
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uint8_t max_packet_size; \
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uint8_t interface_number;
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typedef struct {
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COMMON_DEVICE_CONFIG
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endpoint_param endpoints[3]; // bulk in/out and interrupt
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} device_config;
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typedef struct {
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COMMON_DEVICE_CONFIG // bytes: 0-2
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endpoint_param endpoints[3]; // bytes: 3-5, 6-8, 9-11 bulk in/out and interrupt
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uint32_t current_lba; // bytes 12-15
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uint8_t drive_index; // byte 16
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} device_config_storage;
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typedef struct {
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COMMON_DEVICE_CONFIG
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} device_config_hub;
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typedef struct {
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COMMON_DEVICE_CONFIG
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endpoint_param endpoints[1]; // Isochronous
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} device_config_keyboard;
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extern usb_error usbdev_control_transfer(device_config *const device, const setup_packet *const cmd, uint8_t *const buffer);
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extern usb_error usbdev_blk_out_trnsfer(device_config *const device, const uint8_t *const buffer, const uint16_t buffer_size);
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extern usb_error usbdev_bulk_in_transfer(device_config *const dev, uint8_t *const buffer, uint8_t *const buffer_size);
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extern usb_error usbdev_dat_in_trnsfer(device_config *const device,
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uint8_t *const buffer,
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const uint16_t buffer_size,
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const usb_endpoint_type endpoint_type);
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extern usb_error usbdev_dat_in_trnsfer_0(device_config *const device, uint8_t *const buffer, const uint8_t buffer_size);
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#endif
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