update example for PR. correct share_control definition
- rename dcd,hal to dcd_samd51, hal_samd51 since some IDE has issue with duplicated names (e.g keil, ses).
This commit is contained in:
hathach
341
src/portable/microchip/samd21/dcd_samd21.c
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341
src/portable/microchip/samd21/dcd_samd21.c
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/**************************************************************************/
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/*!
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@file dcd_nrf5x.c
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@author hathach
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@section LICENSE
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Software License Agreement (BSD License)
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Copyright (c) 2018, Scott Shawcroft for Adafruit Industries
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the copyright holders nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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This file is part of the tinyusb stack.
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*/
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/**************************************************************************/
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#include "tusb_option.h"
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#if TUSB_OPT_DEVICE_ENABLED && CFG_TUSB_MCU == OPT_MCU_SAMD21
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#include "device/dcd.h"
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#include "device/usbd.h"
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#include "device/usbd_pvt.h" // to use defer function helper
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#include "class/msc/msc_device.h"
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#include "sam.h"
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/*------------------------------------------------------------------*/
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/* MACRO TYPEDEF CONSTANT ENUM
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*------------------------------------------------------------------*/
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enum
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{
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// Max allowed by USB specs
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MAX_PACKET_SIZE = 64,
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};
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UsbDeviceDescBank sram_registers[8][2];
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ATTR_ALIGNED(4) uint8_t control_out_buffer[64];
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ATTR_ALIGNED(4) uint8_t control_in_buffer[64];
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volatile uint32_t setup_count = 0;
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// Setup the control endpoint 0.
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static void bus_reset(void) {
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// Max size of packets is 64 bytes.
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UsbDeviceDescBank* bank_out = &sram_registers[0][TUSB_DIR_OUT];
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bank_out->PCKSIZE.bit.SIZE = 0x3;
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UsbDeviceDescBank* bank_in = &sram_registers[0][TUSB_DIR_IN];
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bank_in->PCKSIZE.bit.SIZE = 0x3;
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UsbDeviceEndpoint* ep = &USB->DEVICE.DeviceEndpoint[0];
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ep->EPCFG.reg = USB_DEVICE_EPCFG_EPTYPE0(0x1) | USB_DEVICE_EPCFG_EPTYPE1(0x1);
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ep->EPINTENSET.reg = USB_DEVICE_EPINTENSET_TRCPT0 | USB_DEVICE_EPINTENSET_TRCPT1 | USB_DEVICE_EPINTENSET_RXSTP;
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dcd_edpt_xfer(0, 0, control_out_buffer, 64);
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setup_count = 0;
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}
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/*------------------------------------------------------------------*/
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/* Controller API
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*------------------------------------------------------------------*/
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bool dcd_init (uint8_t rhport)
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{
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(void) rhport;
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USB->DEVICE.DESCADD.reg = (uint32_t) &sram_registers;
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USB->DEVICE.CTRLB.reg = USB_DEVICE_CTRLB_SPDCONF_FS;
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USB->DEVICE.CTRLA.reg = USB_CTRLA_MODE_DEVICE | USB_CTRLA_ENABLE;
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USB->DEVICE.INTENSET.reg = USB_DEVICE_INTENSET_SOF | USB_DEVICE_INTENSET_EORST;
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return true;
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}
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void dcd_connect (uint8_t rhport)
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{
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}
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void dcd_disconnect (uint8_t rhport)
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{
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}
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void dcd_set_address (uint8_t rhport, uint8_t dev_addr)
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{
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(void) rhport;
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dcd_edpt_xfer (0, TUSB_DIR_IN_MASK, NULL, 0);
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// Wait for EP0 to finish before switching the address.
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while (USB->DEVICE.DeviceEndpoint[0].EPSTATUS.bit.BK1RDY == 1) {}
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USB->DEVICE.DADD.reg = USB_DEVICE_DADD_DADD(dev_addr) | USB_DEVICE_DADD_ADDEN;
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}
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void dcd_set_config (uint8_t rhport, uint8_t config_num)
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{
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(void) rhport;
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(void) config_num;
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// Nothing to do
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}
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/*------------------------------------------------------------------*/
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/* Control
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*------------------------------------------------------------------*/
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bool dcd_control_xfer (uint8_t rhport, uint8_t dir, uint8_t * buffer, uint16_t length)
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{
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(void) rhport;
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uint8_t ep_addr = 0;
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if (dir == TUSB_DIR_IN) {
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ep_addr |= TUSB_DIR_IN_MASK;
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}
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return dcd_edpt_xfer (rhport, ep_addr, buffer, length);
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}
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bool dcd_edpt_open (uint8_t rhport, tusb_desc_endpoint_t const * desc_edpt)
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{
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(void) rhport;
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uint8_t const epnum = edpt_number(desc_edpt->bEndpointAddress);
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uint8_t const dir = edpt_dir(desc_edpt->bEndpointAddress);
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UsbDeviceDescBank* bank = &sram_registers[epnum][dir];
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uint32_t size_value = 0;
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while (size_value < 7) {
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if (1 << (size_value + 3) == desc_edpt->wMaxPacketSize.size) {
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break;
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}
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size_value++;
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}
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bank->PCKSIZE.bit.SIZE = size_value;
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UsbDeviceEndpoint* ep = &USB->DEVICE.DeviceEndpoint[epnum];
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if ( dir == TUSB_DIR_OUT )
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{
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ep->EPCFG.bit.EPTYPE0 = desc_edpt->bmAttributes.xfer + 1;
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ep->EPINTENSET.bit.TRCPT0 = true;
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}else
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{
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ep->EPCFG.bit.EPTYPE1 = desc_edpt->bmAttributes.xfer + 1;
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ep->EPINTENSET.bit.TRCPT1 = true;
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}
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__ISB(); __DSB();
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return true;
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}
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bool dcd_edpt_xfer (uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t total_bytes)
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{
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(void) rhport;
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uint8_t const epnum = edpt_number(ep_addr);
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uint8_t const dir = edpt_dir(ep_addr);
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UsbDeviceDescBank* bank = &sram_registers[epnum][dir];
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UsbDeviceEndpoint* ep = &USB->DEVICE.DeviceEndpoint[epnum];
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bank->ADDR.reg = (uint32_t) buffer;
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if ( dir == TUSB_DIR_OUT )
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{
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bank->PCKSIZE.bit.MULTI_PACKET_SIZE = total_bytes;
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bank->PCKSIZE.bit.BYTE_COUNT = 0;
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ep->EPSTATUSCLR.reg |= USB_DEVICE_EPSTATUSCLR_BK0RDY;
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ep->EPINTFLAG.reg |= USB_DEVICE_EPINTFLAG_TRFAIL0;
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} else
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{
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bank->PCKSIZE.bit.MULTI_PACKET_SIZE = 0;
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bank->PCKSIZE.bit.BYTE_COUNT = total_bytes;
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// bank->PCKSIZE.bit.AUTO_ZLP = 1;
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ep->EPSTATUSSET.reg |= USB_DEVICE_EPSTATUSSET_BK1RDY;
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ep->EPINTFLAG.reg |= USB_DEVICE_EPINTFLAG_TRFAIL1;
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}
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return true;
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}
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bool dcd_edpt_stalled (uint8_t rhport, uint8_t ep_addr)
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{
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(void) rhport;
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// control is never got halted
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if ( ep_addr == 0 ) {
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return false;
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}
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uint8_t const epnum = edpt_number(ep_addr);
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UsbDeviceEndpoint* ep = &USB->DEVICE.DeviceEndpoint[epnum];
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return (edpt_dir(ep_addr) == TUSB_DIR_IN ) ? ep->EPINTFLAG.bit.STALL1 : ep->EPINTFLAG.bit.STALL0;
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}
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void dcd_edpt_stall (uint8_t rhport, uint8_t ep_addr)
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{
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(void) rhport;
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uint8_t const epnum = edpt_number(ep_addr);
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UsbDeviceEndpoint* ep = &USB->DEVICE.DeviceEndpoint[epnum];
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if (edpt_dir(ep_addr) == TUSB_DIR_IN) {
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ep->EPSTATUSSET.reg = USB_DEVICE_EPSTATUSSET_STALLRQ1;
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} else {
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ep->EPSTATUSSET.reg = USB_DEVICE_EPSTATUSSET_STALLRQ0;
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}
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__ISB(); __DSB();
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}
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void dcd_edpt_clear_stall (uint8_t rhport, uint8_t ep_addr)
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{
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(void) rhport;
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uint8_t const epnum = edpt_number(ep_addr);
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UsbDeviceEndpoint* ep = &USB->DEVICE.DeviceEndpoint[epnum];
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if (edpt_dir(ep_addr) == TUSB_DIR_IN) {
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ep->EPSTATUSCLR.reg = USB_DEVICE_EPSTATUSCLR_STALLRQ1;
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} else {
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ep->EPSTATUSCLR.reg = USB_DEVICE_EPSTATUSCLR_STALLRQ0;
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}
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}
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bool dcd_edpt_busy (uint8_t rhport, uint8_t ep_addr)
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{
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(void) rhport;
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// USBD shouldn't check control endpoint state
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if ( 0 == ep_addr ) return false;
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uint8_t const epnum = edpt_number(ep_addr);
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UsbDeviceEndpoint* ep = &USB->DEVICE.DeviceEndpoint[epnum];
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if (edpt_dir(ep_addr) == TUSB_DIR_IN) {
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return ep->EPINTFLAG.bit.TRCPT1 == 0 && ep->EPSTATUS.bit.BK1RDY == 1;
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}
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return ep->EPINTFLAG.bit.TRCPT0 == 0 && ep->EPSTATUS.bit.BK0RDY == 1;
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}
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/*------------------------------------------------------------------*/
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static bool maybe_handle_setup_packet(void) {
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if (USB->DEVICE.DeviceEndpoint[0].EPINTFLAG.bit.RXSTP)
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{
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USB->DEVICE.DeviceEndpoint[0].EPINTFLAG.reg = USB_DEVICE_EPINTFLAG_RXSTP;
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// This copies the data elsewhere so we can reuse the buffer.
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dcd_event_setup_received(0, (uint8_t*) sram_registers[0][0].ADDR.reg, true);
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dcd_edpt_xfer(0, 0, control_out_buffer, 64);
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setup_count += 1;
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return true;
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}
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return false;
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}
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void maybe_transfer_complete(void) {
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uint32_t epints = USB->DEVICE.EPINTSMRY.reg;
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for (uint8_t epnum = 0; epnum < USB_EPT_NUM; epnum++) {
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if ((epints & (1 << epnum)) == 0) {
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continue;
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}
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if (maybe_handle_setup_packet()) {
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continue;
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}
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UsbDeviceEndpoint* ep = &USB->DEVICE.DeviceEndpoint[epnum];
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uint32_t epintflag = ep->EPINTFLAG.reg;
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// Handle IN completions
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if ((epintflag & USB_DEVICE_EPINTFLAG_TRCPT1) != 0) {
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ep->EPINTFLAG.reg = USB_DEVICE_EPINTFLAG_TRCPT1;
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UsbDeviceDescBank* bank = &sram_registers[epnum][TUSB_DIR_IN];
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uint16_t total_transfer_size = bank->PCKSIZE.bit.BYTE_COUNT;
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uint8_t ep_addr = epnum | TUSB_DIR_IN_MASK;
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dcd_event_xfer_complete(0, ep_addr, total_transfer_size, DCD_XFER_SUCCESS, true);
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}
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// Handle OUT completions
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if ((epintflag & USB_DEVICE_EPINTFLAG_TRCPT0) != 0) {
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ep->EPINTFLAG.reg = USB_DEVICE_EPINTFLAG_TRCPT0;
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UsbDeviceDescBank* bank = &sram_registers[epnum][TUSB_DIR_OUT];
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uint16_t total_transfer_size = bank->PCKSIZE.bit.BYTE_COUNT;
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uint8_t ep_addr = epnum;
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dcd_event_xfer_complete(0, ep_addr, total_transfer_size, DCD_XFER_SUCCESS, true);
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if (epnum == 0) {
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dcd_edpt_xfer(0, 0, control_out_buffer, 64);
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}
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}
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}
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}
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void USB_Handler(void) {
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uint32_t int_status = USB->DEVICE.INTFLAG.reg;
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/*------------- Interrupt Processing -------------*/
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if ( int_status & USB_DEVICE_INTFLAG_EORST )
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{
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USB->DEVICE.INTFLAG.reg = USB_DEVICE_INTENCLR_EORST;
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bus_reset();
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dcd_event_bus_signal(0, DCD_EVENT_BUS_RESET, true);
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}
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if ( int_status & USB_DEVICE_INTFLAG_SOF )
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{
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USB->DEVICE.INTFLAG.reg = USB_DEVICE_INTFLAG_SOF;
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dcd_event_bus_signal(0, DCD_EVENT_SOF, true);
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}
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// Setup packet received.
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maybe_handle_setup_packet();
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// Handle complete transfer
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maybe_transfer_complete();
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}
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#endif
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