/** * Copyright (c) 2016 - 2018, Nordic Semiconductor ASA * * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * 2. Redistributions in binary form, except as embedded into a Nordic * Semiconductor ASA integrated circuit in a product or a software update for * such product, must reproduce the above copyright notice, this list of * conditions and the following disclaimer in the documentation and/or other * materials provided with the distribution. * * 3. Neither the name of Nordic Semiconductor ASA nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * 4. This software, with or without modification, must only be used with a * Nordic Semiconductor ASA integrated circuit. * * 5. Any software provided in binary form under this license must not be reverse * engineered, decompiled, modified and/or disassembled. * * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ #include "sdk_common.h" #if NRF_MODULE_ENABLED(USBD) #include "nrf_drv_usbd.h" #include "nrf.h" #include "nrf_atomic.h" #include "app_util_platform.h" #include "nrf_delay.h" #include #include #include #define NRF_LOG_MODULE_NAME USBD #if USBD_CONFIG_LOG_ENABLED #define NRF_LOG_LEVEL USBD_CONFIG_LOG_LEVEL #define NRF_LOG_INFO_COLOR USBD_CONFIG_INFO_COLOR #define NRF_LOG_DEBUG_COLOR USBD_CONFIG_DEBUG_COLOR #else //USBD_CONFIG_LOG_ENABLED #define NRF_LOG_LEVEL 0 #endif //USBD_CONFIG_LOG_ENABLED #include "nrf_log.h" NRF_LOG_MODULE_REGISTER(); #ifndef NRF_DRV_USBD_EARLY_DMA_PROCESS /* Try to process DMA request when endpoint transmission has been detected * and just after last EasyDMA has been processed. * It speeds up the transmission a little (about 10% measured) * with a cost of more CPU power used. */ #define NRF_DRV_USBD_EARLY_DMA_PROCESS 1 #endif #ifndef NRF_DRV_USBD_PROTO1_FIX_DEBUG /* Debug information when events are fixed*/ #define NRF_DRV_USBD_PROTO1_FIX_DEBUG 1 #endif #define NRF_DRV_USBD_LOG_PROTO1_FIX_PRINTF(...) \ do{ \ if (NRF_DRV_USBD_PROTO1_FIX_DEBUG){ NRF_LOG_DEBUG(__VA_ARGS__); }\ } while (0) #ifndef NRF_DRV_USBD_STARTED_EV_ENABLE #define NRF_DRV_USBD_STARTED_EV_ENABLE 0 #endif #ifndef NRF_USBD_ISO_DEBUG /* Also generate information about ISOCHRONOUS events and transfers. * Turn this off if no ISOCHRONOUS transfers are going to be debugged and this * option generates a lot of useless messages. */ #define NRF_USBD_ISO_DEBUG 1 #endif #ifndef NRF_USBD_FAILED_TRANSFERS_DEBUG /* Also generate debug information for failed transfers. * It might be useful but may generate a lot of useless debug messages * in some library usages (for example when transfer is generated and the * result is used to check whatever endpoint was busy. */ #define NRF_USBD_FAILED_TRANSFERS_DEBUG 1 #endif #ifndef NRF_USBD_DMAREQ_PROCESS_DEBUG /* Generate additional messages that mark the status inside * @ref usbd_dmareq_process. * It is useful to debug library internals but may generate a lot of * useless debug messages. */ #define NRF_USBD_DMAREQ_PROCESS_DEBUG 1 #endif /** * @defgroup nrf_drv_usbd_int USB Device driver internal part * @internal * @ingroup nrf_drv_usbd * * This part contains auxiliary internal macros, variables and functions. * @{ */ /** * @brief Assert endpoint number validity * * Internal macro to be used during program creation in debug mode. * Generates assertion if endpoint number is not valid. * * @param ep Endpoint number to validity check */ #define USBD_ASSERT_EP_VALID(ep) ASSERT( \ ((NRF_USBD_EPIN_CHECK(ep) && (NRF_USBD_EP_NR_GET(ep) < NRF_USBD_EPIN_CNT )) \ || \ (NRF_USBD_EPOUT_CHECK(ep) && (NRF_USBD_EP_NR_GET(ep) < NRF_USBD_EPOUT_CNT))) \ ); /** * @brief Lowest position of bit for IN endpoint * * The first bit position corresponding to IN endpoint. * @sa ep2bit bit2ep */ #define USBD_EPIN_BITPOS_0 0 /** * @brief Lowest position of bit for OUT endpoint * * The first bit position corresponding to OUT endpoint * @sa ep2bit bit2ep */ #define USBD_EPOUT_BITPOS_0 16 /** * @brief Input endpoint bits mask */ #define USBD_EPIN_BIT_MASK (0xFFFFU << USBD_EPIN_BITPOS_0) /** * @brief Output endpoint bits mask */ #define USBD_EPOUT_BIT_MASK (0xFFFFU << USBD_EPOUT_BITPOS_0) /** * @brief Auxiliary macro to change EP number into bit position * * This macro is used by @ref ep2bit function but also for statically check * the bitpos values integrity during compilation. * * @param[in] ep Endpoint number. * @return Endpoint bit position. */ #define USBD_EP_BITPOS(ep) \ ((NRF_USBD_EPIN_CHECK(ep) ? USBD_EPIN_BITPOS_0 : USBD_EPOUT_BITPOS_0) + NRF_USBD_EP_NR_GET(ep)) /** * @brief Helper macro for creating an endpoint transfer event. * * @param[in] name Name of the created transfer event variable. * @param[in] endpoint Endpoint number. * @param[in] ep_stat Endpoint state to report. * * @return Initialized event constant variable. */ #define NRF_DRV_USBD_EP_TRANSFER_EVENT(name, endpont, ep_stat) \ const nrf_drv_usbd_evt_t name = { \ NRF_DRV_USBD_EVT_EPTRANSFER, \ .data = { \ .eptransfer = { \ .ep = endpont, \ .status = ep_stat \ } \ } \ } /* Check it the bit positions values match defined DATAEPSTATUS bit positions */ STATIC_ASSERT(USBD_EP_BITPOS(NRF_DRV_USBD_EPIN1) == USBD_EPDATASTATUS_EPIN1_Pos ); STATIC_ASSERT(USBD_EP_BITPOS(NRF_DRV_USBD_EPIN2) == USBD_EPDATASTATUS_EPIN2_Pos ); STATIC_ASSERT(USBD_EP_BITPOS(NRF_DRV_USBD_EPIN3) == USBD_EPDATASTATUS_EPIN3_Pos ); STATIC_ASSERT(USBD_EP_BITPOS(NRF_DRV_USBD_EPIN4) == USBD_EPDATASTATUS_EPIN4_Pos ); STATIC_ASSERT(USBD_EP_BITPOS(NRF_DRV_USBD_EPIN5) == USBD_EPDATASTATUS_EPIN5_Pos ); STATIC_ASSERT(USBD_EP_BITPOS(NRF_DRV_USBD_EPIN6) == USBD_EPDATASTATUS_EPIN6_Pos ); STATIC_ASSERT(USBD_EP_BITPOS(NRF_DRV_USBD_EPIN7) == USBD_EPDATASTATUS_EPIN7_Pos ); STATIC_ASSERT(USBD_EP_BITPOS(NRF_DRV_USBD_EPOUT1) == USBD_EPDATASTATUS_EPOUT1_Pos); STATIC_ASSERT(USBD_EP_BITPOS(NRF_DRV_USBD_EPOUT2) == USBD_EPDATASTATUS_EPOUT2_Pos); STATIC_ASSERT(USBD_EP_BITPOS(NRF_DRV_USBD_EPOUT3) == USBD_EPDATASTATUS_EPOUT3_Pos); STATIC_ASSERT(USBD_EP_BITPOS(NRF_DRV_USBD_EPOUT4) == USBD_EPDATASTATUS_EPOUT4_Pos); STATIC_ASSERT(USBD_EP_BITPOS(NRF_DRV_USBD_EPOUT5) == USBD_EPDATASTATUS_EPOUT5_Pos); STATIC_ASSERT(USBD_EP_BITPOS(NRF_DRV_USBD_EPOUT6) == USBD_EPDATASTATUS_EPOUT6_Pos); STATIC_ASSERT(USBD_EP_BITPOS(NRF_DRV_USBD_EPOUT7) == USBD_EPDATASTATUS_EPOUT7_Pos); /** * @name Internal auxiliary definitions for SETUP packet * * Definitions used to take out the information about last SETUP packet direction * from @c bmRequestType. * @{ */ /** The position of DIR bit in bmRequestType inside SETUP packet */ #define USBD_DRV_REQUESTTYPE_DIR_BITPOS 7 /** The mask of DIR bit in bmRequestType inside SETUP packet */ #define USBD_DRV_REQUESTTYPE_DIR_MASK (1U << USBD_DRV_REQUESTTYPE_DIR_BITPOS) /** The value of DIR bit for OUT direction (Host -> Device) */ #define USBD_DRV_REQUESTTYPE_DIR_OUT (0U << USBD_DRV_REQUESTTYPE_DIR_BITPOS) /** The value of DIR bit for IN direction (Device -> Host) */ #define USBD_DRV_REQUESTTYPE_DIR_IN (1U << USBD_DRV_REQUESTTYPE_DIR_BITPOS) /** @} */ /** * @brief Current driver state */ static nrfx_drv_state_t m_drv_state = NRFX_DRV_STATE_UNINITIALIZED; /** * @brief Event handler for the library * * Event handler that would be called on events. * * @note Currently it cannot be null if any interrupt is activated. */ static nrf_drv_usbd_event_handler_t m_event_handler; /** * @brief Detected state of the bus * * Internal state changed in interrupts handling when * RESUME or SUSPEND event is processed. * * Values: * - true - bus suspended * - false - ongoing normal communication on the bus * * @note This is only the bus state and does not mean that the peripheral is in suspend state. */ static volatile bool m_bus_suspend; /** * @brief Internal constant that contains interrupts disabled in suspend state * * Internal constant used in @ref nrf_drv_usbd_suspend_irq_config and @ref nrf_drv_usbd_active_irq_config * functions. */ static const uint32_t m_irq_disabled_in_suspend = NRF_USBD_INT_ENDEPIN0_MASK | NRF_USBD_INT_EP0DATADONE_MASK | NRF_USBD_INT_ENDEPOUT0_MASK | NRF_USBD_INT_EP0SETUP_MASK | NRF_USBD_INT_DATAEP_MASK; /** * @brief Direction of last received Setup transfer * * This variable is used to redirect internal setup data event * into selected endpoint (IN or OUT). */ static nrf_drv_usbd_ep_t m_last_setup_dir; /** * @brief Mark endpoint readiness for DMA transfer * * Bits in this variable are cleared and set in interrupts. * 1 means that endpoint is ready for DMA transfer. * 0 means that DMA transfer cannot be performed on selected endpoint. */ static uint32_t m_ep_ready; /** * @brief Mark endpoint with prepared data to transfer by DMA * * This variable can be from any place in the code (interrupt or main thread). * It would be cleared only from USBD interrupt. * * Mask prepared USBD data for transmission. * It is cleared when no more data to transmit left. */ static uint32_t m_ep_dma_waiting; /** * @brief Current EasyDMA state * * Single flag, updated only inside interrupts, that marks current EasyDMA state. * In USBD there is only one DMA channel working in background, and new transfer * cannot be started when there is ongoing transfer on any other channel. */ static bool m_dma_pending; /** * @brief Simulated data EP status bits required for errata 104 * * Marker to delete when not required anymore: >> NRF_DRV_USBD_ERRATA_ENABLE << */ static uint32_t m_simulated_dataepstatus; /** * @brief The structure that would hold transfer configuration to every endpoint * * The structure that holds all the data required by the endpoint to proceed * with LIST functionality and generate quick callback directly when data * buffer is ready. */ typedef struct { nrf_drv_usbd_handler_t handler; //!< Handler for current transfer, function pointer void * p_context; //!< Context for transfer handler size_t transfer_cnt; //!< Number of transferred bytes in the current transfer uint16_t max_packet_size; //!< Configured endpoint size nrf_drv_usbd_ep_status_t status; //!< NRF_SUCCESS or error code, never NRF_ERROR_BUSY - this one is calculated }usbd_drv_ep_state_t; /** * @brief The array of transfer configurations for the endpoints. * * The status of the transfer on each endpoint. */ static struct { usbd_drv_ep_state_t ep_out[NRF_USBD_EPOUT_CNT]; //!< Status for OUT endpoints. usbd_drv_ep_state_t ep_in [NRF_USBD_EPIN_CNT ]; //!< Status for IN endpoints. }m_ep_state; /** * @brief Status variables for integrated feeders. * * Current status for integrated feeders (IN transfers). * Integrated feeders are used for default transfers: * 1. Simple RAM transfer * 2. Simple flash transfer * 3. RAM transfer with automatic ZLP * 4. Flash transfer with automatic ZLP */ nrf_drv_usbd_transfer_t m_ep_feeder_state[NRF_USBD_EPIN_CNT]; /** * @brief Status variables for integrated consumers * * Current status for integrated consumers * Currently one type of transfer is supported: * 1. Transfer to RAM * * Transfer is finished automatically when received data block is smaller * than the endpoint buffer or all the required data is received. */ nrf_drv_usbd_transfer_t m_ep_consumer_state[NRF_USBD_EPOUT_CNT]; /** * @brief Buffer used to send data directly from FLASH * * This is internal buffer that would be used to emulate the possibility * to transfer data directly from FLASH. * We do not have to care about the source of data when calling transfer functions. * * We do not need more buffers that one, because only one transfer can be pending * at once. */ static uint32_t m_tx_buffer[CEIL_DIV( NRF_DRV_USBD_FEEDER_BUFFER_SIZE, sizeof(uint32_t))]; /* Early declaration. Documentation above definition. */ static void usbd_dmareq_process(void); /** * @brief Change endpoint number to endpoint event code * * @param ep Endpoint number * * @return Connected endpoint event code. * * Marker to delete when not required anymore: >> NRF_DRV_USBD_ERRATA_ENABLE << */ static inline nrf_usbd_event_t nrf_drv_usbd_ep_to_endevent(nrf_drv_usbd_ep_t ep) { USBD_ASSERT_EP_VALID(ep); static const nrf_usbd_event_t epin_endev[] = { NRF_USBD_EVENT_ENDEPIN0, NRF_USBD_EVENT_ENDEPIN1, NRF_USBD_EVENT_ENDEPIN2, NRF_USBD_EVENT_ENDEPIN3, NRF_USBD_EVENT_ENDEPIN4, NRF_USBD_EVENT_ENDEPIN5, NRF_USBD_EVENT_ENDEPIN6, NRF_USBD_EVENT_ENDEPIN7, NRF_USBD_EVENT_ENDISOIN0 }; static const nrf_usbd_event_t epout_endev[] = { NRF_USBD_EVENT_ENDEPOUT0, NRF_USBD_EVENT_ENDEPOUT1, NRF_USBD_EVENT_ENDEPOUT2, NRF_USBD_EVENT_ENDEPOUT3, NRF_USBD_EVENT_ENDEPOUT4, NRF_USBD_EVENT_ENDEPOUT5, NRF_USBD_EVENT_ENDEPOUT6, NRF_USBD_EVENT_ENDEPOUT7, NRF_USBD_EVENT_ENDISOOUT0 }; return (NRF_USBD_EPIN_CHECK(ep) ? epin_endev : epout_endev)[NRF_USBD_EP_NR_GET(ep)]; } /** * @brief Get interrupt mask for selected endpoint * * @param[in] ep Endpoint number * * @return Interrupt mask related to the EasyDMA transfer end for the * chosen endpoint. */ static inline uint32_t nrf_drv_usbd_ep_to_int(nrf_drv_usbd_ep_t ep) { USBD_ASSERT_EP_VALID(ep); static const uint8_t epin_bitpos[] = { USBD_INTEN_ENDEPIN0_Pos, USBD_INTEN_ENDEPIN1_Pos, USBD_INTEN_ENDEPIN2_Pos, USBD_INTEN_ENDEPIN3_Pos, USBD_INTEN_ENDEPIN4_Pos, USBD_INTEN_ENDEPIN5_Pos, USBD_INTEN_ENDEPIN6_Pos, USBD_INTEN_ENDEPIN7_Pos, USBD_INTEN_ENDISOIN_Pos }; static const uint8_t epout_bitpos[] = { USBD_INTEN_ENDEPOUT0_Pos, USBD_INTEN_ENDEPOUT1_Pos, USBD_INTEN_ENDEPOUT2_Pos, USBD_INTEN_ENDEPOUT3_Pos, USBD_INTEN_ENDEPOUT4_Pos, USBD_INTEN_ENDEPOUT5_Pos, USBD_INTEN_ENDEPOUT6_Pos, USBD_INTEN_ENDEPOUT7_Pos, USBD_INTEN_ENDISOOUT_Pos }; return 1UL << (NRF_USBD_EPIN_CHECK(ep) ? epin_bitpos : epout_bitpos)[NRF_USBD_EP_NR_GET(ep)]; } /** * @name Integrated feeders and consumers * * Internal, default functions for transfer processing. * @{ */ /** * @brief Integrated consumer to RAM buffer. * * @param p_next See @ref nrf_drv_usbd_consumer_t documentation. * @param p_context See @ref nrf_drv_usbd_consumer_t documentation. * @param ep_size See @ref nrf_drv_usbd_consumer_t documentation. * @param data_size See @ref nrf_drv_usbd_consumer_t documentation. * * @retval true Continue transfer. * @retval false This was the last transfer. */ bool nrf_drv_usbd_consumer( nrf_drv_usbd_ep_transfer_t * p_next, void * p_context, size_t ep_size, size_t data_size) { nrf_drv_usbd_transfer_t * p_transfer = p_context; ASSERT(ep_size >= data_size); ASSERT((p_transfer->p_data.rx == NULL) || nrfx_is_in_ram((const void*)(p_transfer->p_data.ptr))); size_t size = p_transfer->size; if (size < data_size) { NRF_LOG_DEBUG("consumer: buffer too small: r: %u, l: %u", data_size, size); /* Buffer size to small */ p_next->size = 0; p_next->p_data = p_transfer->p_data; } else { p_next->size = data_size; p_next->p_data = p_transfer->p_data; size -= data_size; p_transfer->size = size; p_transfer->p_data.ptr += data_size; } return (ep_size == data_size) && (size != 0); } /** * @brief Integrated feeder from RAM source. * * @param[out] p_next See @ref nrf_drv_usbd_feeder_t documentation. * @param[in,out] p_context See @ref nrf_drv_usbd_feeder_t documentation. * @param[in] ep_size See @ref nrf_drv_usbd_feeder_t documentation. * * @retval true Continue transfer. * @retval false This was the last transfer. */ bool nrf_drv_usbd_feeder_ram( nrf_drv_usbd_ep_transfer_t * p_next, void * p_context, size_t ep_size) { nrf_drv_usbd_transfer_t * p_transfer = p_context; ASSERT(nrfx_is_in_ram((const void*)(p_transfer->p_data.ptr))); size_t tx_size = p_transfer->size; if (tx_size > ep_size) { tx_size = ep_size; } p_next->p_data = p_transfer->p_data; p_next->size = tx_size; p_transfer->size -= tx_size; p_transfer->p_data.ptr += tx_size; return (p_transfer->size != 0); } /** * @brief Integrated feeder from RAM source with ZLP. * * @param[out] p_next See @ref nrf_drv_usbd_feeder_t documentation. * @param[in,out] p_context See @ref nrf_drv_usbd_feeder_t documentation. * @param[in] ep_size See @ref nrf_drv_usbd_feeder_t documentation. * * @retval true Continue transfer. * @retval false This was the last transfer. */ bool nrf_drv_usbd_feeder_ram_zlp( nrf_drv_usbd_ep_transfer_t * p_next, void * p_context, size_t ep_size) { nrf_drv_usbd_transfer_t * p_transfer = p_context; ASSERT(nrfx_is_in_ram((const void*)(p_transfer->p_data.ptr))); size_t tx_size = p_transfer->size; if (tx_size > ep_size) { tx_size = ep_size; } p_next->p_data.tx = (tx_size == 0) ? NULL : p_transfer->p_data.tx; p_next->size = tx_size; p_transfer->size -= tx_size; p_transfer->p_data.ptr += tx_size; return (tx_size != 0); } /** * @brief Integrated feeder from a flash source. * * @param[out] p_next See @ref nrf_drv_usbd_feeder_t documentation. * @param[in,out] p_context See @ref nrf_drv_usbd_feeder_t documentation. * @param[in] ep_size See @ref nrf_drv_usbd_feeder_t documentation. * * @retval true Continue transfer. * @retval false This was the last transfer. */ bool nrf_drv_usbd_feeder_flash( nrf_drv_usbd_ep_transfer_t * p_next, void * p_context, size_t ep_size) { nrf_drv_usbd_transfer_t * p_transfer = p_context; ASSERT(!nrfx_is_in_ram((const void*)(p_transfer->p_data.ptr))); size_t tx_size = p_transfer->size; void * p_buffer = nrf_drv_usbd_feeder_buffer_get(); if (tx_size > ep_size) { tx_size = ep_size; } ASSERT(tx_size <= NRF_DRV_USBD_FEEDER_BUFFER_SIZE); memcpy(p_buffer, (p_transfer->p_data.tx), tx_size); p_next->p_data.tx = p_buffer; p_next->size = tx_size; p_transfer->size -= tx_size; p_transfer->p_data.ptr += tx_size; return (p_transfer->size != 0); } /** * @brief Integrated feeder from a flash source with ZLP. * * @param[out] p_next See @ref nrf_drv_usbd_feeder_t documentation. * @param[in,out] p_context See @ref nrf_drv_usbd_feeder_t documentation. * @param[in] ep_size See @ref nrf_drv_usbd_feeder_t documentation. * * @retval true Continue transfer. * @retval false This was the last transfer. */ bool nrf_drv_usbd_feeder_flash_zlp( nrf_drv_usbd_ep_transfer_t * p_next, void * p_context, size_t ep_size) { nrf_drv_usbd_transfer_t * p_transfer = p_context; ASSERT(!nrfx_is_in_ram((const void*)(p_transfer->p_data.ptr))); size_t tx_size = p_transfer->size; void * p_buffer = nrf_drv_usbd_feeder_buffer_get(); if (tx_size > ep_size) { tx_size = ep_size; } ASSERT(tx_size <= NRF_DRV_USBD_FEEDER_BUFFER_SIZE); if (tx_size != 0) { memcpy(p_buffer, (p_transfer->p_data.tx), tx_size); p_next->p_data.tx = p_buffer; } else { p_next->p_data.tx = NULL; } p_next->size = tx_size; p_transfer->size -= tx_size; p_transfer->p_data.ptr += tx_size; return (tx_size != 0); } /** @} */ /** * @brief Change Driver endpoint number to HAL endpoint number * * @param ep Driver endpoint identifier * * @return Endpoint identifier in HAL * * @sa nrf_drv_usbd_ep_from_hal */ static inline uint8_t ep_to_hal(nrf_drv_usbd_ep_t ep) { USBD_ASSERT_EP_VALID(ep); return (uint8_t)ep; } /** * @brief Generate start task number for selected endpoint index * * @param ep Endpoint number * * @return Task for starting EasyDMA transfer on selected endpoint. */ static inline nrf_usbd_task_t task_start_ep(nrf_drv_usbd_ep_t ep) { USBD_ASSERT_EP_VALID(ep); return (nrf_usbd_task_t)( (NRF_USBD_EPIN_CHECK(ep) ? NRF_USBD_TASK_STARTEPIN0 : NRF_USBD_TASK_STARTEPOUT0) + (NRF_USBD_EP_NR_GET(ep) * sizeof(uint32_t))); } /** * @brief Access selected endpoint state structure * * Function used to change or just read the state of selected endpoint. * It is used for internal transmission state. * * @param ep Endpoint number */ static inline usbd_drv_ep_state_t* ep_state_access(nrf_drv_usbd_ep_t ep) { USBD_ASSERT_EP_VALID(ep); return ((NRF_USBD_EPIN_CHECK(ep) ? m_ep_state.ep_in : m_ep_state.ep_out) + NRF_USBD_EP_NR_GET(ep)); } /** * @brief Change endpoint number to bit position * * Bit positions are defined the same way as they are placed in DATAEPSTATUS register, * but bits for endpoint 0 are included. * * @param ep Endpoint number * * @return Bit position related to the given endpoint number * * @sa bit2ep */ static inline uint8_t ep2bit(nrf_drv_usbd_ep_t ep) { USBD_ASSERT_EP_VALID(ep); return USBD_EP_BITPOS(ep); } /** * @brief Change bit position to endpoint number * * @param bitpos Bit position * * @return Endpoint number corresponding to given bit position. * * @sa ep2bit */ static inline nrf_drv_usbd_ep_t bit2ep(uint8_t bitpos) { STATIC_ASSERT(USBD_EPOUT_BITPOS_0 > USBD_EPIN_BITPOS_0); return (nrf_drv_usbd_ep_t)((bitpos >= USBD_EPOUT_BITPOS_0) ? NRF_USBD_EPOUT(bitpos - USBD_EPOUT_BITPOS_0) : NRF_USBD_EPIN(bitpos)); } /** * @brief Mark that EasyDMA is working * * Internal function to set the flag informing about EasyDMA transfer pending. * This function is called always just after the EasyDMA transfer is started. */ static inline void usbd_dma_pending_set(void) { if (nrf_drv_usb_errata_199()) { *((volatile uint32_t *)0x40027C1C) = 0x00000082; } m_dma_pending = true; } /** * @brief Mark that EasyDMA is free * * Internal function to clear the flag informing about EasyDMA transfer pending. * This function is called always just after the finished EasyDMA transfer is detected. */ static inline void usbd_dma_pending_clear(void) { if (nrf_drv_usb_errata_199()) { *((volatile uint32_t *)0x40027C1C) = 0x00000000; } m_dma_pending = false; } /** * @brief Start selected EasyDMA transmission * * This is internal auxiliary function. * No checking is made if EasyDMA is ready for new transmission. * * @param[in] ep Number of endpoint for transmission. * If it is OUT endpoint transmission would be directed from endpoint to RAM. * If it is in endpoint transmission would be directed from RAM to endpoint. */ static inline void usbd_dma_start(nrf_drv_usbd_ep_t ep) { nrf_usbd_task_trigger(task_start_ep(ep)); } /** * @brief Abort pending transfer on selected endpoint * * @param ep Endpoint number. * * @note * This function locks interrupts that may be costly. * It is good idea to test if the endpoint is still busy before calling this function: * @code (m_ep_dma_waiting & (1U << ep2bit(ep))) * @endcode * This function would check it again, but it makes it inside critical section. */ static inline void usbd_ep_abort(nrf_drv_usbd_ep_t ep) { CRITICAL_REGION_ENTER(); usbd_drv_ep_state_t * p_state = ep_state_access(ep); if (NRF_USBD_EPOUT_CHECK(ep)) { /* Host -> Device */ if ((~m_ep_dma_waiting) & (1U << ep2bit(ep))) { /* If the bit in m_ep_dma_waiting in cleared - nothing would be * processed inside transfer processing */ nrf_drv_usbd_transfer_out_drop(ep); } else { p_state->handler.consumer = NULL; m_ep_dma_waiting &= ~(1U << ep2bit(ep)); m_ep_ready &= ~(1U << ep2bit(ep)); } /* Aborted */ p_state->status = NRF_USBD_EP_ABORTED; } else { if ((m_ep_dma_waiting | (~m_ep_ready)) & (1U << ep2bit(ep))) { /* Device -> Host */ m_ep_dma_waiting &= ~(1U << ep2bit(ep)); m_ep_ready |= 1U << ep2bit(ep) ; p_state->handler.feeder = NULL; p_state->status = NRF_USBD_EP_ABORTED; NRF_DRV_USBD_EP_TRANSFER_EVENT(evt, ep, NRF_USBD_EP_ABORTED); m_event_handler(&evt); } } CRITICAL_REGION_EXIT(); } void nrf_drv_usbd_ep_abort(nrf_drv_usbd_ep_t ep) { usbd_ep_abort(ep); } /** * @brief Abort all pending endpoints * * Function aborts all pending endpoint transfers. */ static void usbd_ep_abort_all(void) { uint32_t ep_waiting = m_ep_dma_waiting | (m_ep_ready & USBD_EPOUT_BIT_MASK); while (0 != ep_waiting) { uint8_t bitpos = __CLZ(__RBIT(ep_waiting)); if(!NRF_USBD_EPISO_CHECK(bit2ep(bitpos))) { usbd_ep_abort(bit2ep(bitpos)); } ep_waiting &= ~(1U << bitpos); } m_ep_ready = (((1U << NRF_USBD_EPIN_CNT) - 1U) << USBD_EPIN_BITPOS_0); } /** * @brief Force the USBD interrupt into pending state * * This function is used to force USBD interrupt to be processed right now. * It makes it possible to process all EasyDMA access on one thread priority level. */ static inline void usbd_int_rise(void) { NVIC_SetPendingIRQ(USBD_IRQn); } /** * @name USBD interrupt runtimes * * Interrupt runtimes that would be vectorized using @ref m_ivec_isr * @{ */ static void ev_usbreset_handler(void) { m_bus_suspend = false; m_last_setup_dir = NRF_DRV_USBD_EPOUT0; const nrf_drv_usbd_evt_t evt = { .type = NRF_DRV_USBD_EVT_RESET }; m_event_handler(&evt); } static void ev_started_handler(void) { #if NRF_DRV_USBD_STARTED_EV_ENABLE uint32_t epstatus = nrf_usbd_epstatus_get_and_clear(); /* All finished endpoint have to be marked as busy */ // #warning Check this one // ASSERT(epstatus == ((~m_ep_ready) & epstatus)); while (epstatus) { uint8_t bitpos = __CLZ(__RBIT(epstatus)); nrf_drv_usbd_ep_t ep = bit2ep(bitpos); epstatus &= ~(1UL << bitpos); UNUSED_VARIABLE(ep); } #endif } /** * @brief Handler for EasyDMA event without endpoint clearing. * * This handler would be called when EasyDMA transfer for endpoints that does not require clearing. * All in endpoints are cleared automatically when new EasyDMA transfer is initialized. * For endpoint 0 see @ref nrf_usbd_ep0out_dma_handler * * @param[in] ep Endpoint number */ static inline void nrf_usbd_ep0in_dma_handler(void) { const nrf_drv_usbd_ep_t ep = NRF_DRV_USBD_EPIN0; NRF_LOG_DEBUG("USB event: DMA ready IN0"); usbd_dma_pending_clear(); usbd_drv_ep_state_t * p_state = ep_state_access(ep); if (NRF_USBD_EP_ABORTED == p_state->status) { /* Clear transfer information just in case */ UNUSED_RETURN_VALUE(nrf_atomic_u32_and(&m_ep_dma_waiting, ~(1U << ep2bit(ep)))); } else if (p_state->handler.feeder == NULL) { UNUSED_RETURN_VALUE(nrf_atomic_u32_and(&m_ep_dma_waiting, ~(1U << ep2bit(ep)))); } else { /* Nothing to do */ } } /** * @brief Handler for EasyDMA event without endpoint clearing. * * This handler would be called when EasyDMA transfer for endpoints that does not require clearing. * All in endpoints are cleared automatically when new EasyDMA transfer is initialized. * For endpoint 0 see @ref nrf_usbd_ep0out_dma_handler * * @param[in] ep Endpoint number */ static inline void nrf_usbd_epin_dma_handler(nrf_drv_usbd_ep_t ep) { NRF_LOG_DEBUG("USB event: DMA ready IN: %x", ep); ASSERT(NRF_USBD_EPIN_CHECK(ep)); ASSERT(!NRF_USBD_EPISO_CHECK(ep)); ASSERT(NRF_USBD_EP_NR_GET(ep) > 0); usbd_dma_pending_clear(); usbd_drv_ep_state_t * p_state = ep_state_access(ep); if (NRF_USBD_EP_ABORTED == p_state->status) { /* Clear transfer information just in case */ UNUSED_RETURN_VALUE(nrf_atomic_u32_and(&m_ep_dma_waiting, ~(1U << ep2bit(ep)))); } else if (p_state->handler.feeder == NULL) { UNUSED_RETURN_VALUE(nrf_atomic_u32_and(&m_ep_dma_waiting, ~(1U << ep2bit(ep)))); } else { /* Nothing to do */ } } /** * @brief Handler for EasyDMA event from in isochronous endpoint * * @todo RK documentation */ static inline void nrf_usbd_epiniso_dma_handler(nrf_drv_usbd_ep_t ep) { if (NRF_USBD_ISO_DEBUG) { NRF_LOG_DEBUG("USB event: DMA ready ISOIN: %x", ep); } ASSERT(NRF_USBD_EPIN_CHECK(ep)); ASSERT(NRF_USBD_EPISO_CHECK(ep)); usbd_dma_pending_clear(); usbd_drv_ep_state_t * p_state = ep_state_access(ep); if (NRF_USBD_EP_ABORTED == p_state->status) { /* Clear transfer information just in case */ UNUSED_RETURN_VALUE(nrf_atomic_u32_and(&m_ep_dma_waiting, ~(1U << ep2bit(ep)))); } else if (p_state->handler.feeder == NULL) { UNUSED_RETURN_VALUE(nrf_atomic_u32_and(&m_ep_dma_waiting, ~(1U << ep2bit(ep)))); /* Send event to the user - for an ISO IN endpoint, the whole transfer is finished in this moment */ NRF_DRV_USBD_EP_TRANSFER_EVENT(evt, ep, NRF_USBD_EP_OK); m_event_handler(&evt); } else { /* Nothing to do */ } } /** * @brief Handler for EasyDMA event for OUT endpoint 0. * * EP0 OUT have to be cleared automatically in special way - only in the middle of the transfer. * It cannot be cleared when required transfer is finished because it means the same that accepting the comment. */ static inline void nrf_usbd_ep0out_dma_handler(void) { const nrf_drv_usbd_ep_t ep = NRF_DRV_USBD_EPOUT0; NRF_LOG_DEBUG("USB event: DMA ready OUT0"); usbd_dma_pending_clear(); usbd_drv_ep_state_t * p_state = ep_state_access(ep); if (NRF_USBD_EP_ABORTED == p_state->status) { /* Clear transfer information just in case */ UNUSED_RETURN_VALUE(nrf_atomic_u32_and(&m_ep_dma_waiting, ~(1U << ep2bit(ep)))); } else if (p_state->handler.consumer == NULL) { UNUSED_RETURN_VALUE(nrf_atomic_u32_and(&m_ep_dma_waiting, ~(1U << ep2bit(ep)))); /* Send event to the user - for an OUT endpoint, the whole transfer is finished in this moment */ NRF_DRV_USBD_EP_TRANSFER_EVENT(evt, ep, NRF_USBD_EP_OK); m_event_handler(&evt); } else { nrf_drv_usbd_setup_data_clear(); } } /** * @brief Handler for EasyDMA event from endpoinpoint that requires clearing. * * This handler would be called when EasyDMA transfer for OUT endpoint has been finished. * * @param[in] ep Endpoint number * */ static inline void nrf_usbd_epout_dma_handler(nrf_drv_usbd_ep_t ep) { NRF_LOG_DEBUG("USB drv: DMA ready OUT: %x", ep); ASSERT(NRF_USBD_EPOUT_CHECK(ep)); ASSERT(!NRF_USBD_EPISO_CHECK(ep)); ASSERT(NRF_USBD_EP_NR_GET(ep) > 0); usbd_dma_pending_clear(); usbd_drv_ep_state_t * p_state = ep_state_access(ep); if (NRF_USBD_EP_ABORTED == p_state->status) { /* Clear transfer information just in case */ UNUSED_RETURN_VALUE(nrf_atomic_u32_and(&m_ep_dma_waiting, ~(1U << ep2bit(ep)))); } else if (p_state->handler.consumer == NULL) { UNUSED_RETURN_VALUE(nrf_atomic_u32_and(&m_ep_dma_waiting, ~(1U << ep2bit(ep)))); /* Send event to the user - for an OUT endpoint, the whole transfer is finished in this moment */ NRF_DRV_USBD_EP_TRANSFER_EVENT(evt, ep, NRF_USBD_EP_OK); m_event_handler(&evt); } else { /* Nothing to do */ } #if NRF_DRV_USBD_EARLY_DMA_PROCESS /* Speed up */ usbd_dmareq_process(); #endif } /** * @brief Handler for EasyDMA event from out isochronous endpoint * * @todo RK documentation */ static inline void nrf_usbd_epoutiso_dma_handler(nrf_drv_usbd_ep_t ep) { if (NRF_USBD_ISO_DEBUG) { NRF_LOG_DEBUG("USB drv: DMA ready ISOOUT: %x", ep); } ASSERT(NRF_USBD_EPISO_CHECK(ep)); usbd_dma_pending_clear(); usbd_drv_ep_state_t * p_state = ep_state_access(ep); if (NRF_USBD_EP_ABORTED == p_state->status) { /* Nothing to do - just ignore */ } else if (p_state->handler.consumer == NULL) { UNUSED_RETURN_VALUE(nrf_atomic_u32_and(&m_ep_dma_waiting, ~(1U << ep2bit(ep)))); /* Send event to the user - for an OUT endpoint, the whole transfer is finished in this moment */ NRF_DRV_USBD_EP_TRANSFER_EVENT(evt, ep, NRF_USBD_EP_OK); m_event_handler(&evt); } else { /* Nothing to do */ } } static void ev_dma_epin0_handler(void) { nrf_usbd_ep0in_dma_handler(); } static void ev_dma_epin1_handler(void) { nrf_usbd_epin_dma_handler(NRF_DRV_USBD_EPIN1 ); } static void ev_dma_epin2_handler(void) { nrf_usbd_epin_dma_handler(NRF_DRV_USBD_EPIN2 ); } static void ev_dma_epin3_handler(void) { nrf_usbd_epin_dma_handler(NRF_DRV_USBD_EPIN3 ); } static void ev_dma_epin4_handler(void) { nrf_usbd_epin_dma_handler(NRF_DRV_USBD_EPIN4 ); } static void ev_dma_epin5_handler(void) { nrf_usbd_epin_dma_handler(NRF_DRV_USBD_EPIN5 ); } static void ev_dma_epin6_handler(void) { nrf_usbd_epin_dma_handler(NRF_DRV_USBD_EPIN6 ); } static void ev_dma_epin7_handler(void) { nrf_usbd_epin_dma_handler(NRF_DRV_USBD_EPIN7 ); } static void ev_dma_epin8_handler(void) { nrf_usbd_epiniso_dma_handler(NRF_DRV_USBD_EPIN8 ); } static void ev_dma_epout0_handler(void) { nrf_usbd_ep0out_dma_handler(); } static void ev_dma_epout1_handler(void) { nrf_usbd_epout_dma_handler(NRF_DRV_USBD_EPOUT1); } static void ev_dma_epout2_handler(void) { nrf_usbd_epout_dma_handler(NRF_DRV_USBD_EPOUT2); } static void ev_dma_epout3_handler(void) { nrf_usbd_epout_dma_handler(NRF_DRV_USBD_EPOUT3); } static void ev_dma_epout4_handler(void) { nrf_usbd_epout_dma_handler(NRF_DRV_USBD_EPOUT4); } static void ev_dma_epout5_handler(void) { nrf_usbd_epout_dma_handler(NRF_DRV_USBD_EPOUT5); } static void ev_dma_epout6_handler(void) { nrf_usbd_epout_dma_handler(NRF_DRV_USBD_EPOUT6); } static void ev_dma_epout7_handler(void) { nrf_usbd_epout_dma_handler(NRF_DRV_USBD_EPOUT7); } static void ev_dma_epout8_handler(void) { nrf_usbd_epoutiso_dma_handler(NRF_DRV_USBD_EPOUT8); } static void ev_sof_handler(void) { nrf_drv_usbd_evt_t evt = { NRF_DRV_USBD_EVT_SOF, .data = { .sof = { .framecnt = nrf_usbd_framecntr_get() }} }; /* Process isochronous endpoints */ m_ep_ready |= (1U << ep2bit(NRF_DRV_USBD_EPIN8 )) | (1U << ep2bit(NRF_DRV_USBD_EPOUT8)); m_event_handler(&evt); } /** * @brief React on data transfer finished * * Auxiliary internal function. * @param ep Endpoint number * @param bitpos Bit position for selected endpoint number */ static void usbd_ep_data_handler(nrf_drv_usbd_ep_t ep, uint8_t bitpos) { NRF_LOG_DEBUG("USBD event: EndpointData: %x", ep); /* Mark endpoint ready for next DMA access */ m_ep_ready |= (1U << bitpos); if (NRF_USBD_EPIN_CHECK(ep)) { /* IN endpoint (Device -> Host) */ if (0 == (m_ep_dma_waiting & (1U << bitpos))) { NRF_LOG_DEBUG("USBD event: EndpointData: In finished"); /* No more data to be send - transmission finished */ NRF_DRV_USBD_EP_TRANSFER_EVENT(evt, ep, NRF_USBD_EP_OK); m_event_handler(&evt); } } else { /* OUT endpoint (Host -> Device) */ if (0 == (m_ep_dma_waiting & (1U << bitpos))) { NRF_LOG_DEBUG("USBD event: EndpointData: Out waiting"); /* No buffer prepared - send event to the application */ NRF_DRV_USBD_EP_TRANSFER_EVENT(evt, ep, NRF_USBD_EP_WAITING); m_event_handler(&evt); } } } static void ev_setup_data_handler(void) { usbd_ep_data_handler(m_last_setup_dir, ep2bit(m_last_setup_dir)); } static void ev_setup_handler(void) { NRF_LOG_DEBUG("USBD event: Setup (rt:%.2x r:%.2x v:%.4x i:%.4x l:%u )", nrf_usbd_setup_bmrequesttype_get(), nrf_usbd_setup_brequest_get(), nrf_usbd_setup_wvalue_get(), nrf_usbd_setup_windex_get(), nrf_usbd_setup_wlength_get()); uint8_t bmRequestType = nrf_usbd_setup_bmrequesttype_get(); if ((m_ep_dma_waiting | ((~m_ep_ready) & USBD_EPIN_BIT_MASK)) & (1U <handler.feeder) != NULL); if (NRF_USBD_EPIN_CHECK(ep)) { /* Device -> Host */ continue_transfer = p_state->handler.feeder( &transfer, p_state->p_context, p_state->max_packet_size); if (!continue_transfer) { p_state->handler.feeder = NULL; } } else { /* Host -> Device */ const size_t rx_size = nrf_drv_usbd_epout_size_get(ep); continue_transfer = p_state->handler.consumer( &transfer, p_state->p_context, p_state->max_packet_size, rx_size); if (transfer.p_data.rx == NULL) { /* Dropping transfer - allow processing */ ASSERT(transfer.size == 0); } else if (transfer.size < rx_size) { NRF_LOG_DEBUG("Endpoint %x overload (r: %u, e: %u)", ep, rx_size, transfer.size); p_state->status = NRF_USBD_EP_OVERLOAD; UNUSED_RETURN_VALUE(nrf_atomic_u32_and(&m_ep_dma_waiting, ~(1U << pos))); NRF_DRV_USBD_EP_TRANSFER_EVENT(evt, ep, NRF_USBD_EP_OVERLOAD); m_event_handler(&evt); /* This endpoint will not be transmitted now, repeat the loop */ continue; } else { /* Nothing to do - only check integrity if assertions are enabled */ ASSERT(transfer.size == rx_size); } if (!continue_transfer) { p_state->handler.consumer = NULL; } } usbd_dma_pending_set(); m_ep_ready &= ~(1U << pos); if (NRF_USBD_ISO_DEBUG || (!NRF_USBD_EPISO_CHECK(ep))) { NRF_LOG_DEBUG( "USB DMA process: Starting transfer on EP: %x, size: %u", ep, transfer.size); } /* Update number of currently transferred bytes */ p_state->transfer_cnt += transfer.size; /* Start transfer to the endpoint buffer */ nrf_usbd_ep_easydma_set(ep, transfer.p_data.ptr, (uint32_t)transfer.size); if (nrf_drv_usbd_errata_104()) { uint32_t cnt_end = (uint32_t)(-1); do { uint32_t cnt = (uint32_t)(-1); do { nrf_usbd_event_clear(NRF_USBD_EVENT_STARTED); usbd_dma_start(ep); nrf_delay_us(2); ++cnt; }while (!nrf_usbd_event_check(NRF_USBD_EVENT_STARTED)); if (cnt) { NRF_DRV_USBD_LOG_PROTO1_FIX_PRINTF(" DMA restarted: %u times", cnt); } nrf_delay_us(30); while (0 == (0x20 & *((volatile uint32_t *)(NRF_USBD_BASE + 0x474)))) { nrf_delay_us(2); } nrf_delay_us(1); ++cnt_end; } while (!nrf_usbd_event_check(nrf_drv_usbd_ep_to_endevent(ep))); if (cnt_end) { NRF_DRV_USBD_LOG_PROTO1_FIX_PRINTF(" DMA fully restarted: %u times", cnt_end); } } else { usbd_dma_start(ep); /* There is a lot of USBD registers that cannot be accessed during EasyDMA transfer. * This is quick fix to maintain stability of the stack. * It cost some performance but makes stack stable. */ while (!nrf_usbd_event_check(nrf_drv_usbd_ep_to_endevent(ep))) { /* Empty */ } } if (NRF_USBD_DMAREQ_PROCESS_DEBUG) { NRF_LOG_DEBUG("USB DMA process - finishing"); } /* Transfer started - exit the loop */ break; } } else { if (NRF_USBD_DMAREQ_PROCESS_DEBUG) { NRF_LOG_DEBUG("USB DMA process - EasyDMA busy"); } } } /** @} */ typedef void (*nrf_drv_usbd_isr_t)(void); /** * @brief USBD interrupt service runtimes * */ static const nrf_drv_usbd_isr_t m_isr[] = { [USBD_INTEN_USBRESET_Pos ] = ev_usbreset_handler, [USBD_INTEN_STARTED_Pos ] = ev_started_handler, [USBD_INTEN_ENDEPIN0_Pos ] = ev_dma_epin0_handler, [USBD_INTEN_ENDEPIN1_Pos ] = ev_dma_epin1_handler, [USBD_INTEN_ENDEPIN2_Pos ] = ev_dma_epin2_handler, [USBD_INTEN_ENDEPIN3_Pos ] = ev_dma_epin3_handler, [USBD_INTEN_ENDEPIN4_Pos ] = ev_dma_epin4_handler, [USBD_INTEN_ENDEPIN5_Pos ] = ev_dma_epin5_handler, [USBD_INTEN_ENDEPIN6_Pos ] = ev_dma_epin6_handler, [USBD_INTEN_ENDEPIN7_Pos ] = ev_dma_epin7_handler, [USBD_INTEN_EP0DATADONE_Pos] = ev_setup_data_handler, [USBD_INTEN_ENDISOIN_Pos ] = ev_dma_epin8_handler, [USBD_INTEN_ENDEPOUT0_Pos ] = ev_dma_epout0_handler, [USBD_INTEN_ENDEPOUT1_Pos ] = ev_dma_epout1_handler, [USBD_INTEN_ENDEPOUT2_Pos ] = ev_dma_epout2_handler, [USBD_INTEN_ENDEPOUT3_Pos ] = ev_dma_epout3_handler, [USBD_INTEN_ENDEPOUT4_Pos ] = ev_dma_epout4_handler, [USBD_INTEN_ENDEPOUT5_Pos ] = ev_dma_epout5_handler, [USBD_INTEN_ENDEPOUT6_Pos ] = ev_dma_epout6_handler, [USBD_INTEN_ENDEPOUT7_Pos ] = ev_dma_epout7_handler, [USBD_INTEN_ENDISOOUT_Pos ] = ev_dma_epout8_handler, [USBD_INTEN_SOF_Pos ] = ev_sof_handler, [USBD_INTEN_USBEVENT_Pos ] = ev_usbevent_handler, [USBD_INTEN_EP0SETUP_Pos ] = ev_setup_handler, [USBD_INTEN_EPDATA_Pos ] = ev_epdata_handler }; /** * @name Interrupt handlers * * @{ */ void USBD_IRQHandler(void) { const uint32_t enabled = nrf_usbd_int_enable_get(); uint32_t to_process = enabled; uint32_t active = 0; /* Check all enabled interrupts */ while (to_process) { uint8_t event_nr = __CLZ(__RBIT(to_process)); if (nrf_usbd_event_get_and_clear((nrf_usbd_event_t)nrfx_bitpos_to_event(event_nr))) { active |= 1UL << event_nr; } to_process &= ~(1UL << event_nr); } if (nrf_drv_usbd_errata_104()) { /* Event correcting */ if ((!m_dma_pending) && (0 != (active & (USBD_INTEN_SOF_Msk)))) { uint8_t usbi, uoi, uii; /* Testing */ *((volatile uint32_t *)(NRF_USBD_BASE + 0x800)) = 0x7A9; uii = (uint8_t)(*((volatile uint32_t *)(NRF_USBD_BASE + 0x804))); if (0 != uii) { uii &= (uint8_t)(*((volatile uint32_t *)(NRF_USBD_BASE + 0x804))); } *((volatile uint32_t *)(NRF_USBD_BASE + 0x800)) = 0x7AA; uoi = (uint8_t)(*((volatile uint32_t *)(NRF_USBD_BASE + 0x804))); if (0 != uoi) { uoi &= (uint8_t)(*((volatile uint32_t *)(NRF_USBD_BASE + 0x804))); } *((volatile uint32_t *)(NRF_USBD_BASE + 0x800)) = 0x7AB; usbi = (uint8_t)(*((volatile uint32_t *)(NRF_USBD_BASE + 0x804))); if (0 != usbi) { usbi &= (uint8_t)(*((volatile uint32_t *)(NRF_USBD_BASE + 0x804))); } /* Processing */ *((volatile uint32_t *)(NRF_USBD_BASE + 0x800)) = 0x7AC; uii &= (uint8_t)*((volatile uint32_t *)(NRF_USBD_BASE + 0x804)); if (0 != uii) { uint8_t rb; m_simulated_dataepstatus |= ((uint32_t)uii) << USBD_EPIN_BITPOS_0; *((volatile uint32_t *)(NRF_USBD_BASE + 0x800)) = 0x7A9; *((volatile uint32_t *)(NRF_USBD_BASE + 0x804)) = uii; rb = (uint8_t)*((volatile uint32_t *)(NRF_USBD_BASE + 0x804)); NRF_DRV_USBD_LOG_PROTO1_FIX_PRINTF(" uii: 0x%.2x (0x%.2x)", uii, rb); } *((volatile uint32_t *)(NRF_USBD_BASE + 0x800)) = 0x7AD; uoi &= (uint8_t)*((volatile uint32_t *)(NRF_USBD_BASE + 0x804)); if (0 != uoi) { uint8_t rb; m_simulated_dataepstatus |= ((uint32_t)uoi) << USBD_EPOUT_BITPOS_0; *((volatile uint32_t *)(NRF_USBD_BASE + 0x800)) = 0x7AA; *((volatile uint32_t *)(NRF_USBD_BASE + 0x804)) = uoi; rb = (uint8_t)*((volatile uint32_t *)(NRF_USBD_BASE + 0x804)); NRF_DRV_USBD_LOG_PROTO1_FIX_PRINTF(" uoi: 0x%.2u (0x%.2x)", uoi, rb); } *((volatile uint32_t *)(NRF_USBD_BASE + 0x800)) = 0x7AE; usbi &= (uint8_t)*((volatile uint32_t *)(NRF_USBD_BASE + 0x804)); if (0 != usbi) { uint8_t rb; if (usbi & 0x01) { active |= USBD_INTEN_EP0SETUP_Msk; } if (usbi & 0x10) { active |= USBD_INTEN_USBRESET_Msk; } *((volatile uint32_t *)(NRF_USBD_BASE + 0x800)) = 0x7AB; *((volatile uint32_t *)(NRF_USBD_BASE + 0x804)) = usbi; rb = (uint8_t)*((volatile uint32_t *)(NRF_USBD_BASE + 0x804)); NRF_DRV_USBD_LOG_PROTO1_FIX_PRINTF(" usbi: 0x%.2u (0x%.2x)", usbi, rb); } if (0 != (m_simulated_dataepstatus & ~((1U << USBD_EPOUT_BITPOS_0) | (1U << USBD_EPIN_BITPOS_0)))) { active |= enabled & NRF_USBD_INT_DATAEP_MASK; } if (0 != (m_simulated_dataepstatus & ((1U << USBD_EPOUT_BITPOS_0) | (1U << USBD_EPIN_BITPOS_0)))) { if (0 != (enabled & NRF_USBD_INT_EP0DATADONE_MASK)) { m_simulated_dataepstatus &= ~((1U << USBD_EPOUT_BITPOS_0) | (1U << USBD_EPIN_BITPOS_0)); active |= NRF_USBD_INT_EP0DATADONE_MASK; } } } } /* Process the active interrupts */ bool setup_active = 0 != (active & NRF_USBD_INT_EP0SETUP_MASK); active &= ~NRF_USBD_INT_EP0SETUP_MASK; while (active) { uint8_t event_nr = __CLZ(__RBIT(active)); m_isr[event_nr](); active &= ~(1UL << event_nr); } usbd_dmareq_process(); if (setup_active) { m_isr[USBD_INTEN_EP0SETUP_Pos](); } } /** @} */ /** @} */ ret_code_t nrf_drv_usbd_init(nrf_drv_usbd_event_handler_t const event_handler) { if (NULL == event_handler) { return NRF_ERROR_INVALID_PARAM; } if ( m_drv_state != NRFX_DRV_STATE_UNINITIALIZED) { return NRF_ERROR_INVALID_STATE; } m_event_handler = event_handler; m_drv_state = NRFX_DRV_STATE_INITIALIZED; uint8_t n; for (n=0; nstatus = NRF_USBD_EP_OK; p_state->handler.feeder = NULL; p_state->transfer_cnt = 0; } for (n=0; nstatus = NRF_USBD_EP_OK; p_state->handler.consumer = NULL; p_state->transfer_cnt = 0; } return NRF_SUCCESS; } ret_code_t nrf_drv_usbd_uninit(void) { if (m_drv_state != NRFX_DRV_STATE_INITIALIZED) { return NRF_ERROR_INVALID_STATE; } m_event_handler = NULL; m_drv_state = NRFX_DRV_STATE_UNINITIALIZED; return NRF_SUCCESS; } void nrf_drv_usbd_enable(void) { ASSERT(m_drv_state == NRFX_DRV_STATE_INITIALIZED); /* Prepare for READY event receiving */ nrf_usbd_eventcause_clear(NRF_USBD_EVENTCAUSE_READY_MASK); if (nrf_drv_usbd_errata_187()) { CRITICAL_REGION_ENTER(); if (*((volatile uint32_t *)(0x4006EC00)) == 0x00000000) { *((volatile uint32_t *)(0x4006EC00)) = 0x00009375; *((volatile uint32_t *)(0x4006ED14)) = 0x00000003; *((volatile uint32_t *)(0x4006EC00)) = 0x00009375; } else { *((volatile uint32_t *)(0x4006ED14)) = 0x00000003; } CRITICAL_REGION_EXIT(); } if (nrf_drv_usbd_errata_171()) { CRITICAL_REGION_ENTER(); if (*((volatile uint32_t *)(0x4006EC00)) == 0x00000000) { *((volatile uint32_t *)(0x4006EC00)) = 0x00009375; *((volatile uint32_t *)(0x4006EC14)) = 0x000000C0; *((volatile uint32_t *)(0x4006EC00)) = 0x00009375; } else { *((volatile uint32_t *)(0x4006EC14)) = 0x000000C0; } CRITICAL_REGION_EXIT(); } /* Enable the peripheral */ nrf_usbd_enable(); /* Waiting for peripheral to enable, this should take a few us */ while (0 == (NRF_USBD_EVENTCAUSE_READY_MASK & nrf_usbd_eventcause_get())) { /* Empty loop */ } nrf_usbd_eventcause_clear(NRF_USBD_EVENTCAUSE_READY_MASK); if (nrf_drv_usbd_errata_171()) { CRITICAL_REGION_ENTER(); if (*((volatile uint32_t *)(0x4006EC00)) == 0x00000000) { *((volatile uint32_t *)(0x4006EC00)) = 0x00009375; *((volatile uint32_t *)(0x4006EC14)) = 0x00000000; *((volatile uint32_t *)(0x4006EC00)) = 0x00009375; } else { *((volatile uint32_t *)(0x4006EC14)) = 0x00000000; } CRITICAL_REGION_EXIT(); } if (nrf_drv_usbd_errata_187()) { CRITICAL_REGION_ENTER(); if (*((volatile uint32_t *)(0x4006EC00)) == 0x00000000) { *((volatile uint32_t *)(0x4006EC00)) = 0x00009375; *((volatile uint32_t *)(0x4006ED14)) = 0x00000000; *((volatile uint32_t *)(0x4006EC00)) = 0x00009375; } else { *((volatile uint32_t *)(0x4006ED14)) = 0x00000000; } CRITICAL_REGION_EXIT(); } if (nrf_drv_usbd_errata_166()) { *((volatile uint32_t *)(NRF_USBD_BASE + 0x800)) = 0x7E3; *((volatile uint32_t *)(NRF_USBD_BASE + 0x804)) = 0x40; __ISB(); __DSB(); } nrf_usbd_isosplit_set(NRF_USBD_ISOSPLIT_Half); m_ep_ready = (((1U << NRF_USBD_EPIN_CNT) - 1U) << USBD_EPIN_BITPOS_0); m_ep_dma_waiting = 0; usbd_dma_pending_clear(); m_last_setup_dir = NRF_DRV_USBD_EPOUT0; m_drv_state = NRFX_DRV_STATE_POWERED_ON; } void nrf_drv_usbd_disable(void) { ASSERT(m_drv_state != NRFX_DRV_STATE_UNINITIALIZED); /* Stop just in case */ nrf_drv_usbd_stop(); /* Disable all parts */ nrf_usbd_int_disable(nrf_usbd_int_enable_get()); nrf_usbd_disable(); usbd_dma_pending_clear(); m_drv_state = NRFX_DRV_STATE_INITIALIZED; } void nrf_drv_usbd_start(bool enable_sof) { ASSERT(m_drv_state == NRFX_DRV_STATE_POWERED_ON); m_bus_suspend = false; uint32_t ints_to_enable = NRF_USBD_INT_USBRESET_MASK | NRF_USBD_INT_STARTED_MASK | NRF_USBD_INT_ENDEPIN0_MASK | NRF_USBD_INT_EP0DATADONE_MASK | NRF_USBD_INT_ENDEPOUT0_MASK | NRF_USBD_INT_USBEVENT_MASK | NRF_USBD_INT_EP0SETUP_MASK | NRF_USBD_INT_DATAEP_MASK; if (enable_sof || nrf_drv_usbd_errata_104()) { ints_to_enable |= NRF_USBD_INT_SOF_MASK; } /* Enable all required interrupts */ nrf_usbd_int_enable(ints_to_enable); /* Enable interrupt globally */ NRFX_IRQ_PRIORITY_SET(USBD_IRQn, USBD_CONFIG_IRQ_PRIORITY); NRFX_IRQ_ENABLE(USBD_IRQn); /* Enable pullups */ nrf_usbd_pullup_enable(); } void nrf_drv_usbd_stop(void) { ASSERT(m_drv_state == NRFX_DRV_STATE_POWERED_ON); if(NRFX_IRQ_IS_ENABLED(USBD_IRQn)) { /* Abort transfers */ usbd_ep_abort_all(); /* Disable pullups */ nrf_usbd_pullup_disable(); /* Disable interrupt globally */ NRFX_IRQ_DISABLE(USBD_IRQn); /* Disable all interrupts */ nrf_usbd_int_disable(~0U); } } bool nrf_drv_usbd_is_initialized(void) { return (m_drv_state >= NRFX_DRV_STATE_INITIALIZED); } bool nrf_drv_usbd_is_enabled(void) { return (m_drv_state >= NRFX_DRV_STATE_POWERED_ON); } bool nrf_drv_usbd_is_started(void) { return (nrf_drv_usbd_is_enabled() && NRFX_IRQ_IS_ENABLED(USBD_IRQn)); } bool nrf_drv_usbd_suspend(void) { bool suspended = false; CRITICAL_REGION_ENTER(); if (m_bus_suspend) { usbd_ep_abort_all(); if (!(nrf_usbd_eventcause_get() & NRF_USBD_EVENTCAUSE_RESUME_MASK)) { nrf_usbd_lowpower_enable(); if (nrf_usbd_eventcause_get() & NRF_USBD_EVENTCAUSE_RESUME_MASK) { nrf_usbd_lowpower_disable(); } else { suspended = true; if (nrf_drv_usbd_errata_171()) { if (*((volatile uint32_t *)(0x4006EC00)) == 0x00000000) { *((volatile uint32_t *)(0x4006EC00)) = 0x00009375; *((volatile uint32_t *)(0x4006EC14)) = 0x00000000; *((volatile uint32_t *)(0x4006EC00)) = 0x00009375; } else { *((volatile uint32_t *)(0x4006EC14)) = 0x00000000; } } } } } CRITICAL_REGION_EXIT(); return suspended; } bool nrf_drv_usbd_wakeup_req(void) { bool started = false; CRITICAL_REGION_ENTER(); if (m_bus_suspend && nrf_usbd_lowpower_check()) { nrf_usbd_lowpower_disable(); started = true; if (nrf_drv_usbd_errata_171()) { if (*((volatile uint32_t *)(0x4006EC00)) == 0x00000000) { *((volatile uint32_t *)(0x4006EC00)) = 0x00009375; *((volatile uint32_t *)(0x4006EC14)) = 0x000000C0; *((volatile uint32_t *)(0x4006EC00)) = 0x00009375; } else { *((volatile uint32_t *)(0x4006EC14)) = 0x000000C0; } } } CRITICAL_REGION_EXIT(); return started; } bool nrf_drv_usbd_suspend_check(void) { return nrf_usbd_lowpower_check(); } void nrf_drv_usbd_suspend_irq_config(void) { nrf_usbd_int_disable(m_irq_disabled_in_suspend); } void nrf_drv_usbd_active_irq_config(void) { nrf_usbd_int_enable(m_irq_disabled_in_suspend); } bool nrf_drv_usbd_bus_suspend_check(void) { return m_bus_suspend; } void nrf_drv_usbd_ep_max_packet_size_set(nrf_drv_usbd_ep_t ep, uint16_t size) { /* Only power of 2 size allowed */ ASSERT((size != 0) && (size & (size - 1)) == 0); /* Packet size cannot be higher than maximum buffer size */ ASSERT( ( NRF_USBD_EPISO_CHECK(ep) && (size <= usbd_ep_iso_capacity(ep))) || ((!NRF_USBD_EPISO_CHECK(ep)) && (size <= NRF_DRV_USBD_EPSIZE))); usbd_drv_ep_state_t * p_state = ep_state_access(ep); p_state->max_packet_size = size; } uint16_t nrf_drv_usbd_ep_max_packet_size_get(nrf_drv_usbd_ep_t ep) { usbd_drv_ep_state_t const * p_state = ep_state_access(ep); return p_state->max_packet_size; } bool nrf_drv_usbd_ep_enable_check(nrf_drv_usbd_ep_t ep) { return nrf_usbd_ep_enable_check(ep_to_hal(ep)); } void nrf_drv_usbd_ep_enable(nrf_drv_usbd_ep_t ep) { nrf_usbd_int_enable(nrf_drv_usbd_ep_to_int(ep)); if(nrf_usbd_ep_enable_check(ep)) { return; } nrf_usbd_ep_enable(ep_to_hal(ep)); if ((NRF_USBD_EP_NR_GET(ep) != 0) && NRF_USBD_EPOUT_CHECK(ep) && (!NRF_USBD_EPISO_CHECK(ep))) { CRITICAL_REGION_ENTER(); nrf_drv_usbd_transfer_out_drop(ep); m_ep_dma_waiting &= ~(1U << ep2bit(ep)); CRITICAL_REGION_EXIT(); } } void nrf_drv_usbd_ep_disable(nrf_drv_usbd_ep_t ep) { usbd_ep_abort(ep); nrf_usbd_ep_disable(ep_to_hal(ep)); nrf_usbd_int_disable(nrf_drv_usbd_ep_to_int(ep)); } void nrf_drv_usbd_ep_default_config(void) { nrf_usbd_int_disable( NRF_USBD_INT_ENDEPIN1_MASK | NRF_USBD_INT_ENDEPIN2_MASK | NRF_USBD_INT_ENDEPIN3_MASK | NRF_USBD_INT_ENDEPIN4_MASK | NRF_USBD_INT_ENDEPIN5_MASK | NRF_USBD_INT_ENDEPIN6_MASK | NRF_USBD_INT_ENDEPIN7_MASK | NRF_USBD_INT_ENDISOIN0_MASK | NRF_USBD_INT_ENDEPOUT1_MASK | NRF_USBD_INT_ENDEPOUT2_MASK | NRF_USBD_INT_ENDEPOUT3_MASK | NRF_USBD_INT_ENDEPOUT4_MASK | NRF_USBD_INT_ENDEPOUT5_MASK | NRF_USBD_INT_ENDEPOUT6_MASK | NRF_USBD_INT_ENDEPOUT7_MASK | NRF_USBD_INT_ENDISOOUT0_MASK ); nrf_usbd_int_enable(NRF_USBD_INT_ENDEPIN0_MASK | NRF_USBD_INT_ENDEPOUT0_MASK); nrf_usbd_ep_all_disable(); } ret_code_t nrf_drv_usbd_ep_transfer( nrf_drv_usbd_ep_t ep, nrf_drv_usbd_transfer_t const * const p_transfer) { ret_code_t ret; const uint8_t ep_bitpos = ep2bit(ep); ASSERT(NULL != p_transfer); CRITICAL_REGION_ENTER(); /* Setup data transaction can go only in one direction at a time */ if ((NRF_USBD_EP_NR_GET(ep) == 0) && (ep != m_last_setup_dir)) { ret = NRF_ERROR_INVALID_ADDR; if (NRF_USBD_FAILED_TRANSFERS_DEBUG && (NRF_USBD_ISO_DEBUG || (!NRF_USBD_EPISO_CHECK(ep)))) { NRF_LOG_DEBUG("USB driver: Transfer failed: Invalid EPr\n"); } } else if ((m_ep_dma_waiting | ((~m_ep_ready) & USBD_EPIN_BIT_MASK)) & (1U << ep_bitpos)) { /* IN (Device -> Host) transfer has to be transmitted out to allow new transmission */ ret = NRF_ERROR_BUSY; if (NRF_USBD_FAILED_TRANSFERS_DEBUG) { NRF_LOG_DEBUG("USB driver: Transfer failed: EP is busy"); } } else { usbd_drv_ep_state_t * p_state = ep_state_access(ep); /* Prepare transfer context and handler description */ nrf_drv_usbd_transfer_t * p_context; if (NRF_USBD_EPIN_CHECK(ep)) { p_context = m_ep_feeder_state + NRF_USBD_EP_NR_GET(ep); if (nrfx_is_in_ram(p_transfer->p_data.tx)) { /* RAM */ if (0 == (p_transfer->flags & NRF_DRV_USBD_TRANSFER_ZLP_FLAG)) { p_state->handler.feeder = nrf_drv_usbd_feeder_ram; if (NRF_USBD_ISO_DEBUG || (!NRF_USBD_EPISO_CHECK(ep))) { NRF_LOG_DEBUG( "USB driver: Transfer called on endpoint %x, size: %u, mode: " "RAM", ep, p_transfer->size); } } else { p_state->handler.feeder = nrf_drv_usbd_feeder_ram_zlp; if (NRF_USBD_ISO_DEBUG || (!NRF_USBD_EPISO_CHECK(ep))) { NRF_LOG_DEBUG( "USB driver: Transfer called on endpoint %x, size: %u, mode: " "RAM_ZLP", ep, p_transfer->size); } } } else { /* Flash */ if (0 == (p_transfer->flags & NRF_DRV_USBD_TRANSFER_ZLP_FLAG)) { p_state->handler.feeder = nrf_drv_usbd_feeder_flash; if (NRF_USBD_ISO_DEBUG || (!NRF_USBD_EPISO_CHECK(ep))) { NRF_LOG_DEBUG( "USB driver: Transfer called on endpoint %x, size: %u, mode: " "FLASH", ep, p_transfer->size); } } else { p_state->handler.feeder = nrf_drv_usbd_feeder_flash_zlp; if (NRF_USBD_ISO_DEBUG || (!NRF_USBD_EPISO_CHECK(ep))) { NRF_LOG_DEBUG( "USB driver: Transfer called on endpoint %x, size: %u, mode: " "FLASH_ZLP", ep, p_transfer->size); } } } } else { p_context = m_ep_consumer_state + NRF_USBD_EP_NR_GET(ep); ASSERT((p_transfer->p_data.rx == NULL) || (nrfx_is_in_ram(p_transfer->p_data.rx))); p_state->handler.consumer = nrf_drv_usbd_consumer; } *p_context = *p_transfer; p_state->p_context = p_context; p_state->transfer_cnt = 0; p_state->status = NRF_USBD_EP_OK; m_ep_dma_waiting |= 1U << ep_bitpos; ret = NRF_SUCCESS; usbd_int_rise(); } CRITICAL_REGION_EXIT(); return ret; } ret_code_t nrf_drv_usbd_ep_handled_transfer( nrf_drv_usbd_ep_t ep, nrf_drv_usbd_handler_desc_t const * const p_handler) { ret_code_t ret; const uint8_t ep_bitpos = ep2bit(ep); ASSERT(NULL != p_handler); CRITICAL_REGION_ENTER(); /* Setup data transaction can go only in one direction at a time */ if ((NRF_USBD_EP_NR_GET(ep) == 0) && (ep != m_last_setup_dir)) { ret = NRF_ERROR_INVALID_ADDR; if (NRF_USBD_FAILED_TRANSFERS_DEBUG && (NRF_USBD_ISO_DEBUG || (!NRF_USBD_EPISO_CHECK(ep)))) { NRF_LOG_DEBUG("USB driver: Transfer failed: Invalid EP"); } } else if ((m_ep_dma_waiting | ((~m_ep_ready) & USBD_EPIN_BIT_MASK)) & (1U << ep_bitpos)) { /* IN (Device -> Host) transfer has to be transmitted out to allow a new transmission */ ret = NRF_ERROR_BUSY; if (NRF_USBD_FAILED_TRANSFERS_DEBUG && (NRF_USBD_ISO_DEBUG || (!NRF_USBD_EPISO_CHECK(ep)))) { NRF_LOG_DEBUG("USB driver: Transfer failed: EP is busy");\ } } else { /* Transfer can be configured now */ usbd_drv_ep_state_t * p_state = ep_state_access(ep); p_state->transfer_cnt = 0; p_state->handler = p_handler->handler; p_state->p_context = p_handler->p_context; p_state->status = NRF_USBD_EP_OK; m_ep_dma_waiting |= 1U << ep_bitpos; ret = NRF_SUCCESS; if (NRF_USBD_ISO_DEBUG || (!NRF_USBD_EPISO_CHECK(ep))) { NRF_LOG_DEBUG("USB driver: Transfer called on endpoint %x, mode: Handler", ep); } usbd_int_rise(); } CRITICAL_REGION_EXIT(); return ret; } void * nrf_drv_usbd_feeder_buffer_get(void) { return m_tx_buffer; } ret_code_t nrf_drv_usbd_ep_status_get(nrf_drv_usbd_ep_t ep, size_t * p_size) { ret_code_t ret; usbd_drv_ep_state_t const * p_state = ep_state_access(ep); CRITICAL_REGION_ENTER(); *p_size = p_state->transfer_cnt; ret = (p_state->handler.consumer == NULL) ? p_state->status : NRF_ERROR_BUSY; CRITICAL_REGION_EXIT(); return ret; } size_t nrf_drv_usbd_epout_size_get(nrf_drv_usbd_ep_t ep) { return nrf_usbd_epout_size_get(ep_to_hal(ep)); } bool nrf_drv_usbd_ep_is_busy(nrf_drv_usbd_ep_t ep) { return (0 != ((m_ep_dma_waiting | ((~m_ep_ready) & USBD_EPIN_BIT_MASK)) & (1U << ep2bit(ep)))); } void nrf_drv_usbd_ep_stall(nrf_drv_usbd_ep_t ep) { NRF_LOG_DEBUG("USB: EP %x stalled.", ep); nrf_usbd_ep_stall(ep_to_hal(ep)); } void nrf_drv_usbd_ep_stall_clear(nrf_drv_usbd_ep_t ep) { nrf_usbd_ep_unstall(ep_to_hal(ep)); } bool nrf_drv_usbd_ep_stall_check(nrf_drv_usbd_ep_t ep) { return nrf_usbd_ep_is_stall(ep_to_hal(ep)); } void nrf_drv_usbd_ep_dtoggle_clear(nrf_drv_usbd_ep_t ep) { nrf_usbd_dtoggle_set(ep, NRF_USBD_DTOGGLE_DATA0); } void nrf_drv_usbd_setup_get(nrf_drv_usbd_setup_t * const p_setup) { memset(p_setup, 0, sizeof(nrf_drv_usbd_setup_t)); p_setup->bmRequestType = nrf_usbd_setup_bmrequesttype_get(); p_setup->bmRequest = nrf_usbd_setup_brequest_get(); p_setup->wValue = nrf_usbd_setup_wvalue_get(); p_setup->wIndex = nrf_usbd_setup_windex_get(); p_setup->wLength = nrf_usbd_setup_wlength_get(); } void nrf_drv_usbd_setup_data_clear(void) { if (nrf_drv_usbd_errata_104()) { /* For this fix to work properly, it must be ensured that the task is * executed twice one after another - blocking ISR. This is however a temporary * solution to be used only before production version of the chip. */ uint32_t primask_copy = __get_PRIMASK(); __disable_irq(); nrf_usbd_task_trigger(NRF_USBD_TASK_EP0RCVOUT); nrf_usbd_task_trigger(NRF_USBD_TASK_EP0RCVOUT); __set_PRIMASK(primask_copy); } else { nrf_usbd_task_trigger(NRF_USBD_TASK_EP0RCVOUT); } } void nrf_drv_usbd_setup_clear(void) { nrf_usbd_task_trigger(NRF_USBD_TASK_EP0STATUS); } void nrf_drv_usbd_setup_stall(void) { NRF_LOG_DEBUG("Setup stalled."); nrf_usbd_task_trigger(NRF_USBD_TASK_EP0STALL); } nrf_drv_usbd_ep_t nrf_drv_usbd_last_setup_dir_get(void) { return m_last_setup_dir; } void nrf_drv_usbd_transfer_out_drop(nrf_drv_usbd_ep_t ep) { ASSERT(NRF_USBD_EPOUT_CHECK(ep)); if (nrf_drv_usbd_errata_sizeepout_rw()) { CRITICAL_REGION_ENTER(); m_ep_ready &= ~(1U << ep2bit(ep)); *((volatile uint32_t *)(NRF_USBD_BASE + 0x800)) = 0x7C5 + (2u * NRF_USBD_EP_NR_GET(ep)); *((volatile uint32_t *)(NRF_USBD_BASE + 0x804)) = 0; UNUSED_VARIABLE(((volatile uint32_t *)(NRF_USBD_BASE + 0x804))); CRITICAL_REGION_EXIT(); } else { CRITICAL_REGION_ENTER(); m_ep_ready &= ~(1U << ep2bit(ep)); if (!NRF_USBD_EPISO_CHECK(ep)) { nrf_usbd_epout_clear(ep); } CRITICAL_REGION_EXIT(); } } #endif // NRF_MODULE_ENABLED(USBD)