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/*
* Copyright (c) 2024, sakumisu
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "usbd_core.h"
#include "usbd_cdc_acm.h"
/*!< endpoint address */
#define CDC_IN_EP 0x81
#define CDC_OUT_EP 0x01
#define CDC_INT_EP 0x85
#define CDC_IN_EP2 0x82
#define CDC_OUT_EP2 0x02
#define CDC_INT_EP2 0x86
#define CDC_IN_EP3 0x83
#define CDC_OUT_EP3 0x03
#define CDC_INT_EP3 0x87
#define CDC_IN_EP4 0x84
#define CDC_OUT_EP4 0x04
#define CDC_INT_EP4 0x88
#define USBD_VID 0xFFFF
#define USBD_PID 0xFFFF
#define USBD_MAX_POWER 100
#define USBD_LANGID_STRING 1033
/*!< config descriptor size */
#define USB_CONFIG_SIZE (9 + CDC_ACM_DESCRIPTOR_LEN * 4)
#ifdef CONFIG_USB_HS
#define CDC_MAX_MPS 512
#else
#define CDC_MAX_MPS 64
#endif
static const uint8_t device_descriptor[] = {
USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xEF, 0x02, 0x01, USBD_VID, USBD_PID, 0x0100, 0x01)
};
static const uint8_t config_descriptor[] = {
USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x08, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
CDC_ACM_DESCRIPTOR_INIT(0x00, CDC_INT_EP, CDC_OUT_EP, CDC_IN_EP, CDC_MAX_MPS, 0x02),
CDC_ACM_DESCRIPTOR_INIT(0x02, CDC_INT_EP2, CDC_OUT_EP2, CDC_IN_EP2, CDC_MAX_MPS, 0x02),
CDC_ACM_DESCRIPTOR_INIT(0x04, CDC_INT_EP3, CDC_OUT_EP3, CDC_IN_EP3, CDC_MAX_MPS, 0x02),
CDC_ACM_DESCRIPTOR_INIT(0x06, CDC_INT_EP4, CDC_OUT_EP4, CDC_IN_EP4, CDC_MAX_MPS, 0x02)
};
static const uint8_t device_quality_descriptor[] = {
///////////////////////////////////////
/// device qualifier descriptor
///////////////////////////////////////
0x0a,
USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
0x00,
0x02,
0x00,
0x00,
0x00,
0x40,
0x00,
0x00,
};
static const char *string_descriptors[] = {
(const char[]){ 0x09, 0x04 }, /* Langid */
"CherryUSB", /* Manufacturer */
"CherryUSB CDC MULTI DEMO", /* Product */
"2022123456", /* Serial Number */
};
static const uint8_t *device_descriptor_callback(uint8_t speed)
{
return device_descriptor;
}
static const uint8_t *config_descriptor_callback(uint8_t speed)
{
return config_descriptor;
}
static const uint8_t *device_quality_descriptor_callback(uint8_t speed)
{
return device_quality_descriptor;
}
static const char *string_descriptor_callback(uint8_t speed, uint8_t index)
{
if (index >= (sizeof(string_descriptors) / sizeof(char *))) {
return NULL;
}
return string_descriptors[index];
}
const struct usb_descriptor cdc_multi_descriptor = {
.device_descriptor_callback = device_descriptor_callback,
.config_descriptor_callback = config_descriptor_callback,
.device_quality_descriptor_callback = device_quality_descriptor_callback,
.string_descriptor_callback = string_descriptor_callback
};
USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t read_buffer[4][2048];
USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t write_buffer[4][2048];
volatile bool ep_tx_busy_flag = false;
static void usbd_event_handler(uint8_t busid, uint8_t event)
{
switch (event) {
case USBD_EVENT_RESET:
break;
case USBD_EVENT_CONNECTED:
break;
case USBD_EVENT_DISCONNECTED:
break;
case USBD_EVENT_RESUME:
break;
case USBD_EVENT_SUSPEND:
break;
case USBD_EVENT_CONFIGURED:
ep_tx_busy_flag = false;
/* setup first out ep read transfer */
usbd_ep_start_read(busid, CDC_OUT_EP, read_buffer, 2048);
usbd_ep_start_read(busid, CDC_OUT_EP2, read_buffer, 2048);
usbd_ep_start_read(busid, CDC_OUT_EP3, read_buffer, 2048);
usbd_ep_start_read(busid, CDC_OUT_EP4, read_buffer, 2048);
break;
case USBD_EVENT_SET_REMOTE_WAKEUP:
break;
case USBD_EVENT_CLR_REMOTE_WAKEUP:
break;
default:
break;
}
}
void usbd_cdc_acm_bulk_out(uint8_t busid, uint8_t ep, uint32_t nbytes)
{
USB_LOG_RAW("actual out len:%d\r\n", (unsigned int)nbytes);
/* setup next out ep read transfer */
usbd_ep_start_read(busid, CDC_OUT_EP, read_buffer, 2048);
}
void usbd_cdc_acm_bulk_in(uint8_t busid, uint8_t ep, uint32_t nbytes)
{
USB_LOG_RAW("actual in len:%d\r\n", (unsigned int)nbytes);
if ((nbytes % CDC_MAX_MPS) == 0 && nbytes) {
/* send zlp */
usbd_ep_start_write(CDC_IN_EP, NULL, 0);
} else {
ep_tx_busy_flag = false;
}
}
struct usbd_endpoint cdc_out_ep1 = {
.ep_addr = CDC_OUT_EP,
.ep_cb = usbd_cdc_acm_bulk_out
};
struct usbd_endpoint cdc_in_ep1 = {
.ep_addr = CDC_IN_EP,
.ep_cb = usbd_cdc_acm_bulk_in
};
struct usbd_endpoint cdc_out_ep2 = {
.ep_addr = CDC_OUT_EP2,
.ep_cb = usbd_cdc_acm_bulk_out
};
struct usbd_endpoint cdc_in_ep2 = {
.ep_addr = CDC_IN_EP2,
.ep_cb = usbd_cdc_acm_bulk_in
};
struct usbd_endpoint cdc_out_ep3 = {
.ep_addr = CDC_OUT_EP3,
.ep_cb = usbd_cdc_acm_bulk_out
};
struct usbd_endpoint cdc_in_ep3 = {
.ep_addr = CDC_IN_EP3,
.ep_cb = usbd_cdc_acm_bulk_in
};
struct usbd_endpoint cdc_out_ep4 = {
.ep_addr = CDC_OUT_EP4,
.ep_cb = usbd_cdc_acm_bulk_out
};
struct usbd_endpoint cdc_in_ep4 = {
.ep_addr = CDC_IN_EP4,
.ep_cb = usbd_cdc_acm_bulk_in
};
struct usbd_interface intf0;
struct usbd_interface intf1;
struct usbd_interface intf2;
struct usbd_interface intf3;
struct usbd_interface intf4;
struct usbd_interface intf5;
struct usbd_interface intf6;
struct usbd_interface intf7;
void cdc_acm_multi_init(uint8_t busid, uintptr_t reg_base)
{
usbd_desc_register(busid, &cdc_multi_descriptor);
usbd_add_interface(busid, usbd_cdc_acm_init_intf(busid, &intf0));
usbd_add_interface(busid, usbd_cdc_acm_init_intf(busid, &intf1));
usbd_add_endpoint(busid, &cdc_out_ep1);
usbd_add_endpoint(busid, &cdc_in_ep1);
usbd_add_interface(busid, usbd_cdc_acm_init_intf(busid, &intf2));
usbd_add_interface(busid, usbd_cdc_acm_init_intf(busid, &intf3));
usbd_add_endpoint(busid, &cdc_out_ep2);
usbd_add_endpoint(busid, &cdc_in_ep2);
usbd_add_interface(busid, usbd_cdc_acm_init_intf(busid, &intf4));
usbd_add_interface(busid, usbd_cdc_acm_init_intf(busid, &intf5));
usbd_add_endpoint(busid, &cdc_out_ep3);
usbd_add_endpoint(busid, &cdc_in_ep3);
usbd_add_interface(busid, usbd_cdc_acm_init_intf(busid, &intf6));
usbd_add_interface(busid, usbd_cdc_acm_init_intf(busid, &intf7));
usbd_add_endpoint(busid, &cdc_out_ep4);
usbd_add_endpoint(busid, &cdc_in_ep4);
usbd_initialize(busid, reg_base, usbd_event_handler);
}
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