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/*
* SPDX-FileCopyrightText: Copyright (c) 2018, Ha Thach (tinyusb.org)
* SPDX-License-Identifier: MIT
*
* This file is part of the TinyUSB stack.
*/
#include "tusb_option.h"
#if CFG_TUD_ENABLED && (CFG_TUSB_MCU == OPT_MCU_RP2040) && CFG_TUD_RPI_PIO_USB
#include "pico.h"
#include "pio_usb.h"
#include "pio_usb_ll.h"
#include "device/dcd.h"
//--------------------------------------------------------------------+
// MACRO TYPEDEF CONSTANT ENUM DECLARATION
//--------------------------------------------------------------------+
#define RHPORT_OFFSET 1
#define RHPORT_PIO(_x) ((_x)-RHPORT_OFFSET)
//------------- -------------//
static usb_device_t *usb_device = NULL;
static usb_descriptor_buffers_t desc;
/*------------------------------------------------------------------*/
/* Device API
*------------------------------------------------------------------*/
// Initialize controller to device mode
bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
(void) rhport;
(void) rh_init;
static pio_usb_configuration_t config = PIO_USB_DEFAULT_CONFIG;
usb_device = pio_usb_device_init(&config, &desc);
return true;
}
// Enable device interrupt
void dcd_int_enable (uint8_t rhport)
{
(void) rhport;
}
// Disable device interrupt
void dcd_int_disable (uint8_t rhport)
{
(void) rhport;
}
// Receive Set Address request, mcu port must also include status IN response
void dcd_set_address (uint8_t rhport, uint8_t dev_addr)
{
// must be called before queuing status
pio_usb_device_set_address(dev_addr);
dcd_edpt_xfer(rhport, 0x80, NULL, 0, false);
}
// Wake up host
void dcd_remote_wakeup (uint8_t rhport)
{
(void) rhport;
}
// Connect by enabling internal pull-up resistor on D+/D-
void dcd_connect(uint8_t rhport)
{
(void) rhport;
}
// Disconnect by disabling internal pull-up resistor on D+/D-
void dcd_disconnect(uint8_t rhport)
{
(void) rhport;
}
//--------------------------------------------------------------------+
// Endpoint API
//--------------------------------------------------------------------+
// Configure endpoint's registers according to descriptor
bool dcd_edpt_open (uint8_t rhport, tusb_desc_endpoint_t const * desc_ep)
{
(void) rhport;
return pio_usb_device_endpoint_open((uint8_t const*) desc_ep);
}
void dcd_edpt_close_all (uint8_t rhport)
{
(void) rhport;
}
bool dcd_edpt_iso_alloc(uint8_t rhport, uint8_t ep_addr, uint16_t largest_packet_size) {
(void)rhport;
(void)ep_addr;
(void)largest_packet_size;
return false;
}
bool dcd_edpt_iso_activate(uint8_t rhport, const tusb_desc_endpoint_t *desc_ep) {
(void)rhport;
(void)desc_ep;
return false;
}
// Submit a transfer, When complete dcd_event_xfer_complete() is invoked to notify the stack
bool dcd_edpt_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t total_bytes, bool is_isr)
{
(void) is_isr;
(void) rhport;
endpoint_t *ep = pio_usb_device_get_endpoint_by_address(ep_addr);
return pio_usb_ll_transfer_start(ep, buffer, total_bytes);
}
// Submit a transfer where is managed by FIFO, When complete dcd_event_xfer_complete() is invoked to notify the stack - optional, however, must be listed in usbd.c
//bool dcd_edpt_xfer_fifo(uint8_t rhport, uint8_t ep_addr, tu_fifo_t * ff, uint16_t total_bytes, bool is_isr)
//{
// (void) rhport;
// (void) ep_addr;
// (void) ff;
// (void) total_bytes;
// return false;
//}
// Stall endpoint
void dcd_edpt_stall (uint8_t rhport, uint8_t ep_addr)
{
(void) rhport;
endpoint_t *ep = pio_usb_device_get_endpoint_by_address(ep_addr);
ep->has_transfer = false;
ep->stalled = true;
}
// clear stall, data toggle is also reset to DATA0
void dcd_edpt_clear_stall (uint8_t rhport, uint8_t ep_addr)
{
(void) rhport;
endpoint_t *ep = pio_usb_device_get_endpoint_by_address(ep_addr);
ep->data_id = 0;
ep->stalled = false;
}
//--------------------------------------------------------------------+
//
//--------------------------------------------------------------------+
static void __no_inline_not_in_flash_func(handle_endpoint_irq)(uint8_t tu_rhport, xfer_result_t result, volatile uint32_t* ep_reg)
{
const uint32_t ep_all = *ep_reg;
for(uint8_t ep_idx = 0; ep_idx < PIO_USB_EP_POOL_CNT; ep_idx++)
{
uint32_t const mask = (1u << ep_idx);
if (ep_all & mask)
{
endpoint_t* ep = PIO_USB_ENDPOINT(ep_idx);
dcd_event_xfer_complete(tu_rhport, ep->ep_num, ep->actual_len, result, true);
}
}
// clear all
(*ep_reg) &= ~ep_all;
}
// IRQ Handler
void __no_inline_not_in_flash_func(pio_usb_device_irq_handler)(uint8_t root_id)
{
uint8_t const tu_rhport = root_id + 1;
root_port_t* rport = PIO_USB_ROOT_PORT(root_id);
uint32_t const ints = rport->ints;
if (ints & PIO_USB_INTS_RESET_END_BITS)
{
dcd_event_bus_reset(tu_rhport, TUSB_SPEED_FULL, true);
}
if (ints & PIO_USB_INTS_SETUP_REQ_BITS)
{
dcd_event_setup_received(tu_rhport, rport->setup_packet, true);
}
if ( ints & PIO_USB_INTS_ENDPOINT_COMPLETE_BITS )
{
handle_endpoint_irq(tu_rhport, XFER_RESULT_SUCCESS, &rport->ep_complete);
}
if ( ints & PIO_USB_INTS_ENDPOINT_STALLED_BITS )
{
handle_endpoint_irq(tu_rhport, XFER_RESULT_STALLED, &rport->ep_stalled);
}
if ( ints & PIO_USB_INTS_ENDPOINT_ERROR_BITS )
{
handle_endpoint_irq(tu_rhport, XFER_RESULT_FAILED, &rport->ep_error);
}
// clear all
rport->ints &= ~ints;
}
#endif
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