From 84f214d33cf4f1cb2c8a6cf485d135ac2347c24b Mon Sep 17 00:00:00 2001 From: HiFiPhile Date: Fri, 27 Feb 2026 11:34:55 +0100 Subject: [PATCH] dcd/samx7x: reformat code Signed-off-by: HiFiPhile --- src/portable/microchip/samx7x/dcd_samx7x.c | 568 +++++++++------------ 1 file changed, 236 insertions(+), 332 deletions(-) diff --git a/src/portable/microchip/samx7x/dcd_samx7x.c b/src/portable/microchip/samx7x/dcd_samx7x.c index c1cc95d8c..8dd333e0f 100644 --- a/src/portable/microchip/samx7x/dcd_samx7x.c +++ b/src/portable/microchip/samx7x/dcd_samx7x.c @@ -1,134 +1,125 @@ /* -* The MIT License (MIT) -* -* Copyright (c) 2018, hathach (tinyusb.org) -* Copyright (c) 2021, HiFiPhile -* -* Permission is hereby granted, free of charge, to any person obtaining a copy -* of this software and associated documentation files (the "Software"), to deal -* in the Software without restriction, including without limitation the rights -* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -* copies of the Software, and to permit persons to whom the Software is -* furnished to do so, subject to the following conditions: -* -* The above copyright notice and this permission notice shall be included in -* all copies or substantial portions of the Software. -* -* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -* THE SOFTWARE. -* -* This file is part of the TinyUSB stack. -*/ + * The MIT License (MIT) + * + * Copyright (c) 2018, hathach (tinyusb.org) + * Copyright (c) 2021, HiFiPhile + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + * This file is part of the TinyUSB stack. + */ #include "tusb_option.h" #if CFG_TUD_ENABLED && CFG_TUSB_MCU == OPT_MCU_SAMX7X -#include "device/dcd.h" -#include "sam.h" -#include "samx7x_common.h" -//--------------------------------------------------------------------+ -// MACRO TYPEDEF CONSTANT ENUM DECLARATION -//--------------------------------------------------------------------+ + #include "device/dcd.h" + #include "sam.h" + #include "samx7x_common.h" + //--------------------------------------------------------------------+ + // MACRO TYPEDEF CONSTANT ENUM DECLARATION + //--------------------------------------------------------------------+ -// Since TinyUSB doesn't use SOF for now, and this interrupt too often (1ms interval) -// We disable SOF for now until needed later on -#ifndef USE_SOF -# define USE_SOF 0 -#endif + // Dual bank can improve performance, but need 2 times bigger packet buffer + // As SAM7x has only 4KB packet buffer, use with caution ! + // Enable in FS mode as packets are smaller + #ifndef USE_DUAL_BANK + #if TUD_OPT_HIGH_SPEED + #define USE_DUAL_BANK 0 + #else + #define USE_DUAL_BANK 1 + #endif + #endif -// Dual bank can improve performance, but need 2 times bigger packet buffer -// As SAM7x has only 4KB packet buffer, use with caution ! -// Enable in FS mode as packets are smaller -#ifndef USE_DUAL_BANK -# if TUD_OPT_HIGH_SPEED -# define USE_DUAL_BANK 0 -# else -# define USE_DUAL_BANK 1 -# endif -#endif - -#define EP_GET_FIFO_PTR(ep, scale) (((TU_XSTRCAT(TU_STRCAT(uint, scale),_t) (*)[0x8000 / ((scale) / 8)])FIFO_RAM_ADDR)[(ep)]) + #define EP_GET_FIFO_PTR(ep, scale) \ + (((TU_XSTRCAT(TU_STRCAT(uint, scale), _t)(*)[0x8000 / ((scale) / 8)]) FIFO_RAM_ADDR)[(ep)]) // DMA Channel Transfer Descriptor typedef struct { volatile uint32_t next_desc; volatile uint32_t buff_addr; volatile uint32_t chnl_ctrl; - uint32_t padding; + uint32_t padding; } dma_desc_t; // Transfer control context typedef struct { - uint8_t * buffer; - uint16_t total_len; - uint16_t queued_len; - uint16_t max_packet_size; - uint8_t interval; - tu_fifo_t * fifo; + uint8_t *buffer; + uint16_t total_len; + uint16_t queued_len; + uint16_t max_packet_size; + uint8_t interval; + tu_fifo_t *fifo; } xfer_ctl_t; static tusb_speed_t get_speed(void); -static void dcd_transmit_packet(xfer_ctl_t * xfer, uint8_t ep_ix); +static void dcd_transmit_packet(xfer_ctl_t *xfer, uint8_t ep_ix); static xfer_ctl_t xfer_status[EP_MAX]; -static const tusb_desc_endpoint_t ep0_desc = -{ +static const tusb_desc_endpoint_t ep0_desc = { .bEndpointAddress = 0x00, .wMaxPacketSize = CFG_TUD_ENDPOINT0_SIZE, }; -#if CFG_TUD_MEM_DCACHE_ENABLE -bool dcd_dcache_clean(const void* addr, uint32_t data_size) { + #if CFG_TUD_MEM_DCACHE_ENABLE +bool dcd_dcache_clean(const void *addr, uint32_t data_size) { TU_VERIFY(addr && data_size); return samx7x_dcache_clean(addr, data_size); } -bool dcd_dcache_invalidate(const void* addr, uint32_t data_size) { +bool dcd_dcache_invalidate(const void *addr, uint32_t data_size) { TU_VERIFY(addr && data_size); return samx7x_dcache_invalidate(addr, data_size); } -bool dcd_dcache_clean_invalidate(const void* addr, uint32_t data_size) { +bool dcd_dcache_clean_invalidate(const void *addr, uint32_t data_size) { TU_VERIFY(addr && data_size); return samx7x_dcache_clean_invalidate(addr, data_size); } -#endif + #endif //------------------------------------------------------------------ // Device API //------------------------------------------------------------------ // Initialize controller to device mode -bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) { - (void) rh_init; +bool dcd_init(uint8_t rhport, const tusb_rhport_init_t *rh_init) { + (void)rh_init; dcd_connect(rhport); return true; } // Enable device interrupt -void dcd_int_enable (uint8_t rhport) -{ - (void) rhport; - NVIC_EnableIRQ((IRQn_Type) ID_USBHS); +void dcd_int_enable(uint8_t rhport) { + (void)rhport; + NVIC_EnableIRQ((IRQn_Type)ID_USBHS); } // Disable device interrupt -void dcd_int_disable (uint8_t rhport) -{ - (void) rhport; - NVIC_DisableIRQ((IRQn_Type) ID_USBHS); +void dcd_int_disable(uint8_t rhport) { + (void)rhport; + NVIC_DisableIRQ((IRQn_Type)ID_USBHS); } // Receive Set Address request, mcu port must also include status IN response -void dcd_set_address (uint8_t rhport, uint8_t dev_addr) -{ - (void) dev_addr; +void dcd_set_address(uint8_t rhport, uint8_t dev_addr) { + (void)dev_addr; // DCD can only set address after status for this request is complete // do it at dcd_edpt0_status_complete() @@ -137,30 +128,26 @@ void dcd_set_address (uint8_t rhport, uint8_t dev_addr) } // Wake up host -void dcd_remote_wakeup (uint8_t rhport) -{ - (void) rhport; +void dcd_remote_wakeup(uint8_t rhport) { + (void)rhport; USB_REG->DEVCTRL |= DEVCTRL_RMWKUP; } // Connect by enabling internal pull-up resistor on D+/D- -void dcd_connect(uint8_t rhport) -{ - (void) rhport; +void dcd_connect(uint8_t rhport) { + (void)rhport; dcd_int_disable(rhport); // Enable the USB controller in device mode USB_REG->CTRL = CTRL_UIMOD | CTRL_USBE; - while (!(USB_REG->SR & SR_CLKUSABLE)); -#if TUD_OPT_HIGH_SPEED + while (!(USB_REG->SR & SR_CLKUSABLE)) + ; + #if TUD_OPT_HIGH_SPEED USB_REG->DEVCTRL &= ~DEVCTRL_SPDCONF; -#else + #else USB_REG->DEVCTRL |= DEVCTRL_SPDCONF_LOW_POWER; -#endif + #endif // Enable the End Of Reset, Suspend & Wakeup interrupts USB_REG->DEVIER = (DEVIER_EORSTES | DEVIER_SUSPES | DEVIER_WAKEUPES); -#if USE_SOF - USB_REG->DEVIER = DEVIER_SOFES; -#endif // Clear the End Of Reset, SOF & Wakeup interrupts USB_REG->DEVICR = (DEVICR_EORSTC | DEVICR_SOFC | DEVICR_WAKEUPC); // Manually set the Suspend Interrupt @@ -174,15 +161,15 @@ void dcd_connect(uint8_t rhport) } // Disconnect by disabling internal pull-up resistor on D+/D- -void dcd_disconnect(uint8_t rhport) -{ - (void) rhport; +void dcd_disconnect(uint8_t rhport) { + (void)rhport; dcd_int_disable(rhport); // Disable all endpoints USB_REG->DEVEPT &= ~(0x3FF << DEVEPT_EPEN0_Pos); // Unfreeze USB clock USB_REG->CTRL &= ~CTRL_FRZCLK; - while (!(USB_REG->SR & SR_CLKUSABLE)); + while (!(USB_REG->SR & SR_CLKUSABLE)) + ; // Clear all the pending interrupts USB_REG->DEVICR = DEVICR_Msk; // Disable all interrupts @@ -190,124 +177,103 @@ void dcd_disconnect(uint8_t rhport) // Detach the device USB_REG->DEVCTRL |= DEVCTRL_DETACH; // Disable the device address - USB_REG->DEVCTRL &=~(DEVCTRL_ADDEN | DEVCTRL_UADD); + USB_REG->DEVCTRL &= ~(DEVCTRL_ADDEN | DEVCTRL_UADD); } -void dcd_sof_enable(uint8_t rhport, bool en) -{ - (void) rhport; - (void) en; - - // TODO implement later -} - -static tusb_speed_t get_speed(void) -{ - switch (USB_REG->SR & SR_SPEED) { - case SR_SPEED_FULL_SPEED: - default: - return TUSB_SPEED_FULL; - case SR_SPEED_HIGH_SPEED: - return TUSB_SPEED_HIGH; - case SR_SPEED_LOW_SPEED: - return TUSB_SPEED_LOW; +void dcd_sof_enable(uint8_t rhport, bool en) { + (void)rhport; + if (en) { + USB_REG->DEVIER = DEVIER_SOFES; + } else { + USB_REG->DEVIDR = DEVIDR_SOFEC; } } -static void dcd_ep_handler(uint8_t ep_ix) -{ +static tusb_speed_t get_speed(void) { + switch (USB_REG->SR & SR_SPEED) { + case SR_SPEED_FULL_SPEED: + default: + return TUSB_SPEED_FULL; + case SR_SPEED_HIGH_SPEED: + return TUSB_SPEED_HIGH; + case SR_SPEED_LOW_SPEED: + return TUSB_SPEED_LOW; + } +} + +static void dcd_ep_handler(uint8_t ep_ix) { uint32_t int_status = USB_REG->DEVEPTISR[ep_ix]; int_status &= USB_REG->DEVEPTIMR[ep_ix]; - uint16_t count = (USB_REG->DEVEPTISR[ep_ix] & - DEVEPTISR_BYCT) >> DEVEPTISR_BYCT_Pos; - xfer_ctl_t *xfer = &xfer_status[ep_ix]; + uint16_t count = (USB_REG->DEVEPTISR[ep_ix] & DEVEPTISR_BYCT) >> DEVEPTISR_BYCT_Pos; + xfer_ctl_t *xfer = &xfer_status[ep_ix]; - if (ep_ix == 0U) - { + if (ep_ix == 0U) { static uint8_t ctrl_dir; - if (int_status & DEVEPTISR_CTRL_RXSTPI) - { + if (int_status & DEVEPTISR_CTRL_RXSTPI) { ctrl_dir = (USB_REG->DEVEPTISR[0] & DEVEPTISR_CTRL_CTRLDIR) >> DEVEPTISR_CTRL_CTRLDIR_Pos; // Setup packet should always be 8 bytes. If not, ignore it, and try again. - if (count == 8) - { - uint8_t *ptr = EP_GET_FIFO_PTR(0,8); + if (count == 8) { + uint8_t *ptr = EP_GET_FIFO_PTR(0, 8); dcd_event_setup_received(0, ptr, true); } // Ack and disable SETUP interrupt USB_REG->DEVEPTICR[0] = DEVEPTICR_CTRL_RXSTPIC; USB_REG->DEVEPTIDR[0] = DEVEPTIDR_CTRL_RXSTPEC; } - if (int_status & DEVEPTISR_RXOUTI) - { - uint8_t *ptr = EP_GET_FIFO_PTR(0,8); + if (int_status & DEVEPTISR_RXOUTI) { + uint8_t *ptr = EP_GET_FIFO_PTR(0, 8); - if (count && xfer->total_len) - { + if (count && xfer->total_len) { uint16_t remain = xfer->total_len - xfer->queued_len; - if (count > remain) - { + if (count > remain) { count = remain; } - if (xfer->buffer) - { + if (xfer->buffer) { memcpy(xfer->buffer + xfer->queued_len, ptr, count); - } else - { + } else { tu_hwfifo_read_to_fifo(ptr, xfer->fifo, count, NULL); } xfer->queued_len = (uint16_t)(xfer->queued_len + count); } // Acknowledge the interrupt USB_REG->DEVEPTICR[0] = DEVEPTICR_RXOUTIC; - if ((count < xfer->max_packet_size) || (xfer->queued_len == xfer->total_len)) - { + if ((count < xfer->max_packet_size) || (xfer->queued_len == xfer->total_len)) { // RX COMPLETE dcd_event_xfer_complete(0, 0, xfer->queued_len, XFER_RESULT_SUCCESS, true); // Disable the interrupt USB_REG->DEVEPTIDR[0] = DEVEPTIDR_RXOUTEC; // Re-enable SETUP interrupt - if (ctrl_dir == 1) - { + if (ctrl_dir == 1) { USB_REG->DEVEPTIER[0] = DEVEPTIER_CTRL_RXSTPES; } } } - if (int_status & DEVEPTISR_TXINI) - { + if (int_status & DEVEPTISR_TXINI) { // Disable the interrupt USB_REG->DEVEPTIDR[0] = DEVEPTIDR_TXINEC; - if ((xfer->total_len != xfer->queued_len)) - { + if ((xfer->total_len != xfer->queued_len)) { // TX not complete dcd_transmit_packet(xfer, 0); - } else - { + } else { // TX complete dcd_event_xfer_complete(0, 0x80 + 0, xfer->total_len, XFER_RESULT_SUCCESS, true); // Re-enable SETUP interrupt - if (ctrl_dir == 0) - { + if (ctrl_dir == 0) { USB_REG->DEVEPTIER[0] = DEVEPTIER_CTRL_RXSTPES; } } } - } else - { - if (int_status & DEVEPTISR_RXOUTI) - { - if (count && xfer->total_len) - { + } else { + if (int_status & DEVEPTISR_RXOUTI) { + if (count && xfer->total_len) { uint16_t remain = xfer->total_len - xfer->queued_len; - if (count > remain) - { + if (count > remain) { count = remain; } - uint8_t *ptr = EP_GET_FIFO_PTR(ep_ix,8); - if (xfer->buffer) - { + uint8_t *ptr = EP_GET_FIFO_PTR(ep_ix, 8); + if (xfer->buffer) { memcpy(xfer->buffer + xfer->queued_len, ptr, count); } else { tu_hwfifo_read_to_fifo(ptr, xfer->fifo, count, NULL); @@ -318,8 +284,7 @@ static void dcd_ep_handler(uint8_t ep_ix) USB_REG->DEVEPTIDR[ep_ix] = DEVEPTIDR_FIFOCONC; // Acknowledge the interrupt USB_REG->DEVEPTICR[ep_ix] = DEVEPTICR_RXOUTIC; - if ((count < xfer->max_packet_size) || (xfer->queued_len == xfer->total_len)) - { + if ((count < xfer->max_packet_size) || (xfer->queued_len == xfer->total_len)) { // RX COMPLETE dcd_event_xfer_complete(0, ep_ix, xfer->queued_len, XFER_RESULT_SUCCESS, true); // Disable the interrupt @@ -327,16 +292,13 @@ static void dcd_ep_handler(uint8_t ep_ix) // Though the host could still send, we don't know. } } - if (int_status & DEVEPTISR_TXINI) - { + if (int_status & DEVEPTISR_TXINI) { // Acknowledge the interrupt USB_REG->DEVEPTICR[ep_ix] = DEVEPTICR_TXINIC; - if ((xfer->total_len != xfer->queued_len)) - { + if ((xfer->total_len != xfer->queued_len)) { // TX not complete dcd_transmit_packet(xfer, ep_ix); - } else - { + } else { // TX complete dcd_event_xfer_complete(0, 0x80 + ep_ix, xfer->total_len, XFER_RESULT_SUCCESS, true); // Disable the interrupt @@ -346,46 +308,40 @@ static void dcd_ep_handler(uint8_t ep_ix) } } -static void dcd_dma_handler(uint8_t ep_ix) -{ +static void dcd_dma_handler(uint8_t ep_ix) { uint32_t status = USB_REG->DEVDMA[ep_ix - 1].DEVDMASTATUS; - if (status & DEVDMASTATUS_CHANN_ENB) - { + if (status & DEVDMASTATUS_CHANN_ENB) { return; // Ignore EOT_STA interrupt } // Disable DMA interrupt USB_REG->DEVIDR = DEVIDR_DMA_1 << (ep_ix - 1); - xfer_ctl_t *xfer = &xfer_status[ep_ix]; - uint16_t count = xfer->total_len - ((status & DEVDMASTATUS_BUFF_COUNT) >> DEVDMASTATUS_BUFF_COUNT_Pos); - if(USB_REG->DEVEPTCFG[ep_ix] & DEVEPTCFG_EPDIR) - { + xfer_ctl_t *xfer = &xfer_status[ep_ix]; + uint16_t count = xfer->total_len - ((status & DEVDMASTATUS_BUFF_COUNT) >> DEVDMASTATUS_BUFF_COUNT_Pos); + if (USB_REG->DEVEPTCFG[ep_ix] & DEVEPTCFG_EPDIR) { dcd_event_xfer_complete(0, 0x80 + ep_ix, count, XFER_RESULT_SUCCESS, true); - } else - { + } else { dcd_dcache_invalidate(xfer->buffer, xfer->total_len); dcd_event_xfer_complete(0, ep_ix, count, XFER_RESULT_SUCCESS, true); } } -void dcd_int_handler(uint8_t rhport) -{ - (void) rhport; +void dcd_int_handler(uint8_t rhport) { + (void)rhport; uint32_t int_status = USB_REG->DEVISR; int_status &= USB_REG->DEVIMR; // End of reset interrupt - if (int_status & DEVISR_EORST) - { + if (int_status & DEVISR_EORST) { // Unfreeze USB clock USB_REG->CTRL &= ~CTRL_FRZCLK; - while(!(USB_REG->SR & SR_CLKUSABLE)); + while (!(USB_REG->SR & SR_CLKUSABLE)) + ; // Reset all endpoints - for (int ep_ix = 1; ep_ix < EP_MAX; ep_ix++) - { + for (int ep_ix = 1; ep_ix < EP_MAX; ep_ix++) { USB_REG->DEVEPT |= 1 << (DEVEPT_EPRST0_Pos + ep_ix); - USB_REG->DEVEPT &=~(1 << (DEVEPT_EPRST0_Pos + ep_ix)); + USB_REG->DEVEPT &= ~(1 << (DEVEPT_EPRST0_Pos + ep_ix)); } - dcd_edpt_open (0, &ep0_desc); + dcd_edpt_open(0, &ep0_desc); USB_REG->DEVICR = DEVICR_EORSTC; USB_REG->DEVICR = DEVICR_WAKEUPC; USB_REG->DEVICR = DEVICR_SUSPC; @@ -394,10 +350,10 @@ void dcd_int_handler(uint8_t rhport) dcd_event_bus_reset(rhport, get_speed(), true); } // End of Wakeup interrupt - if (int_status & DEVISR_WAKEUP) - { + if (int_status & DEVISR_WAKEUP) { USB_REG->CTRL &= ~CTRL_FRZCLK; - while (!(USB_REG->SR & SR_CLKUSABLE)); + while (!(USB_REG->SR & SR_CLKUSABLE)) + ; USB_REG->DEVICR = DEVICR_WAKEUPC; USB_REG->DEVIDR = DEVIDR_WAKEUPEC; USB_REG->DEVIER = DEVIER_SUSPES; @@ -405,11 +361,11 @@ void dcd_int_handler(uint8_t rhport) dcd_event_bus_signal(0, DCD_EVENT_RESUME, true); } // Suspend interrupt - if (int_status & DEVISR_SUSP) - { + if (int_status & DEVISR_SUSP) { // Unfreeze USB clock USB_REG->CTRL &= ~CTRL_FRZCLK; - while (!(USB_REG->SR & SR_CLKUSABLE)); + while (!(USB_REG->SR & SR_CLKUSABLE)) + ; USB_REG->DEVICR = DEVICR_SUSPC; USB_REG->DEVIDR = DEVIDR_SUSPEC; USB_REG->DEVIER = DEVIER_WAKEUPES; @@ -417,29 +373,21 @@ void dcd_int_handler(uint8_t rhport) dcd_event_bus_signal(0, DCD_EVENT_SUSPEND, true); } -#if USE_SOF - if(int_status & DEVISR_SOF) - { + if (int_status & DEVISR_SOF) { USB_REG->DEVICR = DEVICR_SOFC; dcd_event_bus_signal(0, DCD_EVENT_SOF, true); } -#endif // Endpoints interrupt - for (int ep_ix = 0; ep_ix < EP_MAX; ep_ix++) - { - if (int_status & (DEVISR_PEP_0 << ep_ix)) - { + for (int ep_ix = 0; ep_ix < EP_MAX; ep_ix++) { + if (int_status & (DEVISR_PEP_0 << ep_ix)) { dcd_ep_handler(ep_ix); } } // Endpoints DMA interrupt - for (int ep_ix = 0; ep_ix < EP_MAX; ep_ix++) - { - if (EP_DMA_SUPPORT(ep_ix)) - { - if (int_status & (DEVISR_DMA_1 << (ep_ix - 1))) - { + for (int ep_ix = 0; ep_ix < EP_MAX; ep_ix++) { + if (EP_DMA_SUPPORT(ep_ix)) { + if (int_status & (DEVISR_DMA_1 << (ep_ix - 1))) { dcd_dma_handler(ep_ix); } } @@ -451,35 +399,29 @@ void dcd_int_handler(uint8_t rhport) //--------------------------------------------------------------------+ // Invoked when a control transfer's status stage is complete. // May help DCD to prepare for next control transfer, this API is optional. -void dcd_edpt0_status_complete(uint8_t rhport, tusb_control_request_t const * request) -{ - (void) rhport; +void dcd_edpt0_status_complete(uint8_t rhport, const tusb_control_request_t *request) { + (void)rhport; if (request->bmRequestType_bit.recipient == TUSB_REQ_RCPT_DEVICE && - request->bmRequestType_bit.type == TUSB_REQ_TYPE_STANDARD && - request->bRequest == TUSB_REQ_SET_ADDRESS ) - { - uint8_t const dev_addr = (uint8_t) request->wValue; + request->bmRequestType_bit.type == TUSB_REQ_TYPE_STANDARD && request->bRequest == TUSB_REQ_SET_ADDRESS) { + const uint8_t dev_addr = (uint8_t)request->wValue; USB_REG->DEVCTRL |= dev_addr | DEVCTRL_ADDEN; } } // Configure endpoint's registers according to descriptor -bool dcd_edpt_open (uint8_t rhport, tusb_desc_endpoint_t const * ep_desc) -{ - (void) rhport; - uint8_t const epnum = tu_edpt_number(ep_desc->bEndpointAddress); - uint8_t const dir = tu_edpt_dir(ep_desc->bEndpointAddress); - uint16_t const epMaxPktSize = tu_edpt_packet_size(ep_desc); - tusb_xfer_type_t const eptype = (tusb_xfer_type_t)ep_desc->bmAttributes.xfer; - uint8_t fifoSize = 0; // FIFO size - uint16_t defaultEndpointSize = 8; // Default size of Endpoint +bool dcd_edpt_open(uint8_t rhport, const tusb_desc_endpoint_t *ep_desc) { + (void)rhport; + const uint8_t epnum = tu_edpt_number(ep_desc->bEndpointAddress); + const uint8_t dir = tu_edpt_dir(ep_desc->bEndpointAddress); + const uint16_t epMaxPktSize = tu_edpt_packet_size(ep_desc); + const tusb_xfer_type_t eptype = (tusb_xfer_type_t)ep_desc->bmAttributes.xfer; + uint8_t fifoSize = 0; // FIFO size + uint16_t defaultEndpointSize = 8; // Default size of Endpoint // Find upper 2 power number of epMaxPktSize - if (epMaxPktSize) - { - while (defaultEndpointSize < epMaxPktSize) - { + if (epMaxPktSize) { + while (defaultEndpointSize < epMaxPktSize) { fifoSize++; defaultEndpointSize <<= 1; } @@ -487,121 +429,94 @@ bool dcd_edpt_open (uint8_t rhport, tusb_desc_endpoint_t const * ep_desc) xfer_status[epnum].max_packet_size = epMaxPktSize; USB_REG->DEVEPT |= 1 << (DEVEPT_EPRST0_Pos + epnum); - USB_REG->DEVEPT &=~(1 << (DEVEPT_EPRST0_Pos + epnum)); + USB_REG->DEVEPT &= ~(1 << (DEVEPT_EPRST0_Pos + epnum)); - if (epnum == 0) - { + if (epnum == 0) { // Enable the control endpoint - Endpoint 0 USB_REG->DEVEPT |= DEVEPT_EPEN0; // Configure the Endpoint 0 configuration register - USB_REG->DEVEPTCFG[0] = - ( - (fifoSize << DEVEPTCFG_EPSIZE_Pos) | - (TUSB_XFER_CONTROL << DEVEPTCFG_EPTYPE_Pos) | - (DEVEPTCFG_EPBK_1_BANK << DEVEPTCFG_EPBK_Pos) | - DEVEPTCFG_ALLOC - ); + USB_REG->DEVEPTCFG[0] = ((fifoSize << DEVEPTCFG_EPSIZE_Pos) | (TUSB_XFER_CONTROL << DEVEPTCFG_EPTYPE_Pos) | + (DEVEPTCFG_EPBK_1_BANK << DEVEPTCFG_EPBK_Pos) | DEVEPTCFG_ALLOC); USB_REG->DEVEPTIER[0] = DEVEPTIER_RSTDTS; USB_REG->DEVEPTIDR[0] = DEVEPTIDR_CTRL_STALLRQC; - if (DEVEPTISR_CFGOK == (USB_REG->DEVEPTISR[0] & DEVEPTISR_CFGOK)) - { + if (DEVEPTISR_CFGOK == (USB_REG->DEVEPTISR[0] & DEVEPTISR_CFGOK)) { // Endpoint configuration is successful USB_REG->DEVEPTIER[0] = DEVEPTIER_CTRL_RXSTPES; // Enable Endpoint 0 Interrupts USB_REG->DEVIER = DEVIER_PEP_0; return true; - } else - { + } else { // Endpoint configuration is not successful return false; } - } else - { + } else { // Enable the endpoint USB_REG->DEVEPT |= ((0x01 << epnum) << DEVEPT_EPEN0_Pos); // Set up the maxpacket size, fifo start address fifosize // and enable the interrupt. CLear the data toggle. // AUTOSW is needed for DMA ack ! USB_REG->DEVEPTCFG[epnum] = - ( - (fifoSize << DEVEPTCFG_EPSIZE_Pos) | - (eptype << DEVEPTCFG_EPTYPE_Pos) | - (DEVEPTCFG_EPBK_1_BANK << DEVEPTCFG_EPBK_Pos) | - DEVEPTCFG_AUTOSW | - ((dir & 0x01) << DEVEPTCFG_EPDIR_Pos) - ); - if (eptype == TUSB_XFER_ISOCHRONOUS) - { + ((fifoSize << DEVEPTCFG_EPSIZE_Pos) | (eptype << DEVEPTCFG_EPTYPE_Pos) | + (DEVEPTCFG_EPBK_1_BANK << DEVEPTCFG_EPBK_Pos) | DEVEPTCFG_AUTOSW | ((dir & 0x01) << DEVEPTCFG_EPDIR_Pos)); + if (eptype == TUSB_XFER_ISOCHRONOUS) { USB_REG->DEVEPTCFG[epnum] |= DEVEPTCFG_NBTRANS_1_TRANS; } -#if USE_DUAL_BANK - if (eptype == TUSB_XFER_ISOCHRONOUS || eptype == TUSB_XFER_BULK) - { + #if USE_DUAL_BANK + if (eptype == TUSB_XFER_ISOCHRONOUS || eptype == TUSB_XFER_BULK) { USB_REG->DEVEPTCFG[epnum] |= DEVEPTCFG_EPBK_2_BANK; } -#endif + #endif USB_REG->DEVEPTCFG[epnum] |= DEVEPTCFG_ALLOC; USB_REG->DEVEPTIER[epnum] = DEVEPTIER_RSTDTS; USB_REG->DEVEPTIDR[epnum] = DEVEPTIDR_CTRL_STALLRQC; - if (DEVEPTISR_CFGOK == (USB_REG->DEVEPTISR[epnum] & DEVEPTISR_CFGOK)) - { + if (DEVEPTISR_CFGOK == (USB_REG->DEVEPTISR[epnum] & DEVEPTISR_CFGOK)) { USB_REG->DEVIER = ((0x01 << epnum) << DEVIER_PEP_0_Pos); return true; - } else - { + } else { // Endpoint configuration is not successful return false; } } } -void dcd_edpt_close_all (uint8_t rhport) -{ - (void) rhport; +void dcd_edpt_close_all(uint8_t rhport) { + (void)rhport; // TODO implement dcd_edpt_close_all() } 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; + (void)rhport; + (void)ep_addr; + (void)largest_packet_size; return false; } -bool dcd_edpt_iso_activate(uint8_t rhport, tusb_desc_endpoint_t const * desc_ep) { - (void) rhport; - (void) desc_ep; +bool dcd_edpt_iso_activate(uint8_t rhport, const tusb_desc_endpoint_t *desc_ep) { + (void)rhport; + (void)desc_ep; return false; } -static void dcd_transmit_packet(xfer_ctl_t * xfer, uint8_t ep_ix) -{ +static void dcd_transmit_packet(xfer_ctl_t *xfer, uint8_t ep_ix) { uint16_t len = (uint16_t)(xfer->total_len - xfer->queued_len); - if (len) - { - if (len > xfer->max_packet_size) - { + if (len) { + if (len > xfer->max_packet_size) { len = xfer->max_packet_size; } - uint8_t *ptr = EP_GET_FIFO_PTR(ep_ix,8); - if(xfer->buffer) - { + uint8_t *ptr = EP_GET_FIFO_PTR(ep_ix, 8); + if (xfer->buffer) { memcpy(ptr, xfer->buffer + xfer->queued_len, len); - } - else - { + } else { tu_hwfifo_write_from_fifo(ptr, xfer->fifo, len, NULL); } __DSB(); __ISB(); xfer->queued_len = (uint16_t)(xfer->queued_len + len); } - if (ep_ix == 0U) - { + if (ep_ix == 0U) { // Control endpoint: clear the interrupt flag to send the data USB_REG->DEVEPTICR[0] = DEVEPTICR_TXINIC; - } else - { + } else { // Other endpoint types: clear the FIFO control flag to send the data USB_REG->DEVEPTIDR[ep_ix] = DEVEPTIDR_FIFOCONC; } @@ -609,25 +524,22 @@ static void dcd_transmit_packet(xfer_ctl_t * xfer, uint8_t ep_ix) } // 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; - uint8_t const epnum = tu_edpt_number(ep_addr); - uint8_t const dir = tu_edpt_dir(ep_addr); +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; + const uint8_t epnum = tu_edpt_number(ep_addr); + const uint8_t dir = tu_edpt_dir(ep_addr); - xfer_ctl_t * xfer = &xfer_status[epnum]; + xfer_ctl_t *xfer = &xfer_status[epnum]; - xfer->buffer = buffer; - xfer->total_len = total_bytes; + xfer->buffer = buffer; + xfer->total_len = total_bytes; xfer->queued_len = 0; - xfer->fifo = NULL; + xfer->fifo = NULL; - if (EP_DMA_SUPPORT(epnum) && total_bytes != 0) - { + if (EP_DMA_SUPPORT(epnum) && total_bytes != 0) { uint32_t udd_dma_ctrl = total_bytes << DEVDMACONTROL_BUFF_LENGTH_Pos; - if (dir == TUSB_DIR_OUT) - { + if (dir == TUSB_DIR_OUT) { udd_dma_ctrl |= DEVDMACONTROL_END_TR_IT | DEVDMACONTROL_END_TR_EN; } else { udd_dma_ctrl |= DEVDMACONTROL_END_B_EN; @@ -636,15 +548,12 @@ bool dcd_edpt_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t t USB_REG->DEVDMA[epnum - 1].DEVDMAADDRESS = (uint32_t)buffer; udd_dma_ctrl |= DEVDMACONTROL_END_BUFFIT | DEVDMACONTROL_CHANN_ENB; USB_REG->DEVDMA[epnum - 1].DEVDMACONTROL = udd_dma_ctrl; - USB_REG->DEVIER = DEVIER_DMA_1 << (epnum - 1); - } else - { - if (dir == TUSB_DIR_OUT) - { + USB_REG->DEVIER = DEVIER_DMA_1 << (epnum - 1); + } else { + if (dir == TUSB_DIR_OUT) { USB_REG->DEVEPTIER[epnum] = DEVEPTIER_RXOUTES; - } else - { - dcd_transmit_packet(xfer,epnum); + } else { + dcd_transmit_packet(xfer, epnum); } } return true; @@ -654,50 +563,45 @@ bool dcd_edpt_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t t // bytes should be written and second to keep the return value free to give back a boolean // success message. If total_bytes is too big, the FIFO will copy only what is available // into the USB buffer! -bool dcd_edpt_xfer_fifo(uint8_t rhport, uint8_t ep_addr, tu_fifo_t * ff, uint16_t total_bytes, bool is_isr) -{ - (void) is_isr; - (void) rhport; - uint8_t const epnum = tu_edpt_number(ep_addr); - uint8_t const dir = tu_edpt_dir(ep_addr); +bool dcd_edpt_xfer_fifo(uint8_t rhport, uint8_t ep_addr, tu_fifo_t *ff, uint16_t total_bytes, bool is_isr) { + (void)is_isr; + (void)rhport; + const uint8_t epnum = tu_edpt_number(ep_addr); + const uint8_t dir = tu_edpt_dir(ep_addr); - xfer_ctl_t * xfer = &xfer_status[epnum]; - if(epnum == 0x80) + xfer_ctl_t *xfer = &xfer_status[epnum]; + if (epnum == 0x80) { xfer = &xfer_status[EP_MAX]; + } - xfer->buffer = NULL; - xfer->total_len = total_bytes; + xfer->buffer = NULL; + xfer->total_len = total_bytes; xfer->queued_len = 0; - xfer->fifo = ff; + xfer->fifo = ff; - if (dir == TUSB_DIR_OUT) - { + if (dir == TUSB_DIR_OUT) { USB_REG->DEVEPTIER[epnum] = DEVEPTIER_RXOUTES; - } else - { - dcd_transmit_packet(xfer,epnum); + } else { + dcd_transmit_packet(xfer, epnum); } return true; } // Stall endpoint -void dcd_edpt_stall (uint8_t rhport, uint8_t ep_addr) -{ - (void) rhport; - uint8_t const epnum = tu_edpt_number(ep_addr); +void dcd_edpt_stall(uint8_t rhport, uint8_t ep_addr) { + (void)rhport; + const uint8_t epnum = tu_edpt_number(ep_addr); USB_REG->DEVEPTIER[epnum] = DEVEPTIER_CTRL_STALLRQS; // Re-enable SETUP interrupt - if (epnum == 0) - { + if (epnum == 0) { USB_REG->DEVEPTIER[0] = DEVEPTIER_CTRL_RXSTPES; } } // clear stall, data toggle is also reset to DATA0 -void dcd_edpt_clear_stall (uint8_t rhport, uint8_t ep_addr) -{ - (void) rhport; - uint8_t const epnum = tu_edpt_number(ep_addr); +void dcd_edpt_clear_stall(uint8_t rhport, uint8_t ep_addr) { + (void)rhport; + const uint8_t epnum = tu_edpt_number(ep_addr); USB_REG->DEVEPTIDR[epnum] = DEVEPTIDR_CTRL_STALLRQC; USB_REG->DEVEPTIER[epnum] = HSTPIPIER_RSTDTS; }