diff options
Diffstat (limited to 'tmk_core/protocol/arm_atsam/usb/usb.c')
| -rw-r--r-- | tmk_core/protocol/arm_atsam/usb/usb.c | 1144 |
1 files changed, 1144 insertions, 0 deletions
diff --git a/tmk_core/protocol/arm_atsam/usb/usb.c b/tmk_core/protocol/arm_atsam/usb/usb.c new file mode 100644 index 000000000..d30d76dd1 --- /dev/null +++ b/tmk_core/protocol/arm_atsam/usb/usb.c @@ -0,0 +1,1144 @@ +/** + * \file + * + * \brief SAM USB Driver. + * + * Copyright (C) 2014-2016 Atmel Corporation. All rights reserved. + * + * \asf_license_start + * + * \page License + * + * 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 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. The name of Atmel may not be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * 4. This software may only be redistributed and used in connection with an + * Atmel microcontroller product. + * + * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE + * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL 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. + * + * \asf_license_stop + * + */ +/* + * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a> + */ + +#define DEVICE_MODE_ONLY true +#define SAMD11 DEVICE_MODE_ONLY + +#ifndef ARM_MATH_CM4 + #define ARM_MATH_CM4 +#endif + +#include "compiler.h" +#undef LITTLE_ENDIAN //redefined in samd51j18a.h +#include "samd51j18a.h" +#include <stdbool.h> +#include <string.h> +#include "arm_math.h" +#include "status_codes.h" +#include "usb.h" + +/** Fields definition from a LPM TOKEN */ +#define USB_LPM_ATTRIBUT_BLINKSTATE_MASK (0xF << 0) +#define USB_LPM_ATTRIBUT_HIRD_MASK (0xF << 4) +#define USB_LPM_ATTRIBUT_REMOTEWAKE_MASK (1 << 8) +#define USB_LPM_ATTRIBUT_BLINKSTATE(value) ((value & 0xF) << 0) +#define USB_LPM_ATTRIBUT_HIRD(value) ((value & 0xF) << 4) +#define USB_LPM_ATTRIBUT_REMOTEWAKE(value) ((value & 1) << 8) +#define USB_LPM_ATTRIBUT_BLINKSTATE_L1 USB_LPM_ATTRIBUT_BLINKSTATE(1) + +/** + * \brief Mask selecting the index part of an endpoint address + */ +#define USB_EP_ADDR_MASK 0x0f + +/** + * \brief Endpoint transfer direction is IN + */ +#define USB_EP_DIR_IN 0x80 + +/** + * \brief Endpoint transfer direction is OUT + */ +#define USB_EP_DIR_OUT 0x00 + +/** + * \name USB SRAM data containing pipe descriptor table + * The content of the USB SRAM can be : + * - modified by USB hardware interface to update pipe status. + * Thereby, it is read by software. + * - modified by USB software to control pipe. + * Thereby, it is read by hardware. + * This data section is volatile. + * + * @{ + */ +COMPILER_PACK_SET(1) +COMPILER_WORD_ALIGNED +union { + UsbDeviceDescriptor usb_endpoint_table[USB_EPT_NUM]; +} usb_descriptor_table; +COMPILER_PACK_RESET() +/** @} */ + +/** + * \brief Local USB module instance + */ +static struct usb_module *_usb_instances; + +/* Device LPM callback variable */ +static uint32_t device_callback_lpm_wakeup_enable; + +/** + * \brief Device endpoint callback parameter variable, used to transfer info to UDD wrapper layer + */ +static struct usb_endpoint_callback_parameter ep_callback_para; + +/** + * \internal USB Device IRQ Mask Bits Map + */ +static const uint16_t _usb_device_irq_bits[USB_DEVICE_CALLBACK_N] = { + USB_DEVICE_INTFLAG_SOF, + USB_DEVICE_INTFLAG_EORST, + USB_DEVICE_INTFLAG_WAKEUP | USB_DEVICE_INTFLAG_EORSM | USB_DEVICE_INTFLAG_UPRSM, + USB_DEVICE_INTFLAG_RAMACER, + USB_DEVICE_INTFLAG_SUSPEND, + USB_DEVICE_INTFLAG_LPMNYET, + USB_DEVICE_INTFLAG_LPMSUSP, +}; + +/** + * \internal USB Device IRQ Mask Bits Map + */ +static const uint8_t _usb_endpoint_irq_bits[USB_DEVICE_EP_CALLBACK_N] = { + USB_DEVICE_EPINTFLAG_TRCPT_Msk, + USB_DEVICE_EPINTFLAG_TRFAIL_Msk, + USB_DEVICE_EPINTFLAG_RXSTP, + USB_DEVICE_EPINTFLAG_STALL_Msk +}; + +/** + * \brief Registers a USB device callback + * + * Registers a callback function which is implemented by the user. + * + * \note The callback must be enabled by \ref usb_device_enable_callback, + * in order for the interrupt handler to call it when the conditions for the + * callback type is met. + * + * \param[in] module_inst Pointer to USB software instance struct + * \param[in] callback_type Callback type given by an enum + * \param[in] callback_func Pointer to callback function + * + * \return Status of the registration operation. + * \retval STATUS_OK The callback was registered successfully. + */ +enum status_code usb_device_register_callback(struct usb_module *module_inst, + enum usb_device_callback callback_type, + usb_device_callback_t callback_func) +{ + /* Sanity check arguments */ + Assert(module_inst); + Assert(callback_func); + + /* Register callback function */ + module_inst->device_callback[callback_type] = callback_func; + + /* Set the bit corresponding to the callback_type */ + module_inst->device_registered_callback_mask |= _usb_device_irq_bits[callback_type]; + + return STATUS_OK; +} + +/** + * \brief Unregisters a USB device callback + * + * Unregisters an asynchronous callback implemented by the user. Removing it + * from the internal callback registration table. + * + * \param[in] module_inst Pointer to USB software instance struct + * \param[in] callback_type Callback type given by an enum + * + * \return Status of the de-registration operation. + * \retval STATUS_OK The callback was unregistered successfully. + */ +enum status_code usb_device_unregister_callback(struct usb_module *module_inst, + enum usb_device_callback callback_type) +{ + /* Sanity check arguments */ + Assert(module_inst); + + /* Unregister callback function */ + module_inst->device_callback[callback_type] = NULL; + + /* Clear the bit corresponding to the callback_type */ + module_inst->device_registered_callback_mask &= ~_usb_device_irq_bits[callback_type]; + + return STATUS_OK; +} + +/** + * \brief Enables USB device callback generation for a given type. + * + * Enables asynchronous callbacks for a given logical type. + * This must be called before USB device generate callback events. + * + * \param[in] module_inst Pointer to USB software instance struct + * \param[in] callback_type Callback type given by an enum + * + * \return Status of the callback enable operation. + * \retval STATUS_OK The callback was enabled successfully. + */ +enum status_code usb_device_enable_callback(struct usb_module *module_inst, + enum usb_device_callback callback_type) +{ + /* Sanity check arguments */ + Assert(module_inst); + Assert(module_inst->hw); + + /* clear related flag */ + module_inst->hw->DEVICE.INTFLAG.reg = _usb_device_irq_bits[callback_type]; + + /* Enable callback */ + module_inst->device_enabled_callback_mask |= _usb_device_irq_bits[callback_type]; + + module_inst->hw->DEVICE.INTENSET.reg = _usb_device_irq_bits[callback_type]; + + return STATUS_OK; +} + +/** + * \brief Disables USB device callback generation for a given type. + * + * Disables asynchronous callbacks for a given logical type. + * + * \param[in] module_inst Pointer to USB software instance struct + * \param[in] callback_type Callback type given by an enum + * + * \return Status of the callback disable operation. + * \retval STATUS_OK The callback was disabled successfully. + */ +enum status_code usb_device_disable_callback(struct usb_module *module_inst, + enum usb_device_callback callback_type) +{ + /* Sanity check arguments */ + Assert(module_inst); + Assert(module_inst->hw); + + /* Disable callback */ + module_inst->device_enabled_callback_mask &= ~_usb_device_irq_bits[callback_type]; + + module_inst->hw->DEVICE.INTENCLR.reg = _usb_device_irq_bits[callback_type]; + + return STATUS_OK; +} + +/** + * \brief Registers a USB device endpoint callback + * + * Registers a callback function which is implemented by the user. + * + * \note The callback must be enabled by \ref usb_device_endpoint_enable_callback, + * in order for the interrupt handler to call it when the conditions for the + * callback type is met. + * + * \param[in] module_inst Pointer to USB software instance struct + * \param[in] ep_num Endpoint to configure + * \param[in] callback_type Callback type given by an enum + * \param[in] callback_func Pointer to callback function + * + * \return Status of the registration operation. + * \retval STATUS_OK The callback was registered successfully. + */ +enum status_code usb_device_endpoint_register_callback( + struct usb_module *module_inst, uint8_t ep_num, + enum usb_device_endpoint_callback callback_type, + usb_device_endpoint_callback_t callback_func) +{ + /* Sanity check arguments */ + Assert(module_inst); + Assert(ep_num < USB_EPT_NUM); + Assert(callback_func); + + /* Register callback function */ + module_inst->device_endpoint_callback[ep_num][callback_type] = callback_func; + + /* Set the bit corresponding to the callback_type */ + module_inst->device_endpoint_registered_callback_mask[ep_num] |= _usb_endpoint_irq_bits[callback_type]; + + return STATUS_OK; +} + +/** + * \brief Unregisters a USB device endpoint callback + * + * Unregisters an callback implemented by the user. Removing it + * from the internal callback registration table. + * + * \param[in] module_inst Pointer to USB software instance struct + * \param[in] ep_num Endpoint to configure + * \param[in] callback_type Callback type given by an enum + * + * \return Status of the de-registration operation. + * \retval STATUS_OK The callback was unregistered successfully. + */ +enum status_code usb_device_endpoint_unregister_callback( + struct usb_module *module_inst, uint8_t ep_num, + enum usb_device_endpoint_callback callback_type) +{ + /* Sanity check arguments */ + Assert(module_inst); + Assert(ep_num < USB_EPT_NUM); + + /* Unregister callback function */ + module_inst->device_endpoint_callback[ep_num][callback_type] = NULL; + + /* Clear the bit corresponding to the callback_type */ + module_inst->device_endpoint_registered_callback_mask[ep_num] &= ~_usb_endpoint_irq_bits[callback_type]; + + return STATUS_OK; +} + +/** + * \brief Enables USB device endpoint callback generation for a given type. + * + * Enables callbacks for a given logical type. + * This must be called before USB device pipe generate callback events. + * + * \param[in] module_inst Pointer to USB software instance struct + * \param[in] ep Endpoint to configure + * \param[in] callback_type Callback type given by an enum + * + * \return Status of the callback enable operation. + * \retval STATUS_OK The callback was enabled successfully. + */ +enum status_code usb_device_endpoint_enable_callback( + struct usb_module *module_inst, uint8_t ep, + enum usb_device_endpoint_callback callback_type) +{ + /* Sanity check arguments */ + Assert(module_inst); + Assert(module_inst->hw); + + uint8_t ep_num = ep & USB_EP_ADDR_MASK; + Assert(ep_num < USB_EPT_NUM); + + /* Enable callback */ + module_inst->device_endpoint_enabled_callback_mask[ep_num] |= _usb_endpoint_irq_bits[callback_type]; + + if (callback_type == USB_DEVICE_ENDPOINT_CALLBACK_TRCPT) { + if (ep_num == 0) { // control endpoint + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPINTENSET.reg = USB_DEVICE_EPINTENSET_TRCPT0 | USB_DEVICE_EPINTENSET_TRCPT1; + } else if (ep & USB_EP_DIR_IN) { + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPINTENSET.reg = USB_DEVICE_EPINTENSET_TRCPT1; + } else { + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPINTENSET.reg = USB_DEVICE_EPINTENSET_TRCPT0; + } + } + + if (callback_type == USB_DEVICE_ENDPOINT_CALLBACK_TRFAIL) { + if (ep_num == 0) { // control endpoint + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPINTENSET.reg = USB_DEVICE_EPINTENSET_TRFAIL0 | USB_DEVICE_EPINTENSET_TRFAIL1; + } else if (ep & USB_EP_DIR_IN) { + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPINTENSET.reg = USB_DEVICE_EPINTENSET_TRFAIL1; + } else { + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPINTENSET.reg = USB_DEVICE_EPINTENSET_TRFAIL0; + } + } + + if (callback_type == USB_DEVICE_ENDPOINT_CALLBACK_RXSTP) { + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPINTENSET.reg = USB_DEVICE_EPINTENSET_RXSTP; + } + + if (callback_type == USB_DEVICE_ENDPOINT_CALLBACK_STALL) { + if (ep & USB_EP_DIR_IN) { + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPINTENSET.reg = USB_DEVICE_EPINTENSET_STALL1; + } else { + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPINTENSET.reg = USB_DEVICE_EPINTENSET_STALL0; + } + } + + return STATUS_OK; +} + +/** + * \brief Disables USB device endpoint callback generation for a given type. + * + * Disables callbacks for a given logical type. + * + * \param[in] module_inst Pointer to USB software instance struct + * \param[in] ep Endpoint to configure + * \param[in] callback_type Callback type given by an enum + * + * \return Status of the callback disable operation. + * \retval STATUS_OK The callback was disabled successfully. + */ +enum status_code usb_device_endpoint_disable_callback( + struct usb_module *module_inst, uint8_t ep, + enum usb_device_endpoint_callback callback_type) +{ + /* Sanity check arguments */ + Assert(module_inst); + Assert(module_inst->hw); + + uint8_t ep_num = ep & USB_EP_ADDR_MASK; + Assert(ep_num < USB_EPT_NUM); + + /* Enable callback */ + module_inst->device_endpoint_enabled_callback_mask[ep_num] &= ~_usb_endpoint_irq_bits[callback_type]; + + if (callback_type == USB_DEVICE_ENDPOINT_CALLBACK_TRCPT) { + if (ep_num == 0) { // control endpoint + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPINTENCLR.reg = USB_DEVICE_EPINTENCLR_TRCPT0 | USB_DEVICE_EPINTENCLR_TRCPT1; + } else if (ep & USB_EP_DIR_IN) { + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPINTENCLR.reg = USB_DEVICE_EPINTENCLR_TRCPT1; + } else { + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPINTENCLR.reg = USB_DEVICE_EPINTENCLR_TRCPT0; + } + } + + if (callback_type == USB_DEVICE_ENDPOINT_CALLBACK_TRFAIL) { + if (ep_num == 0) { // control endpoint + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPINTENCLR.reg = USB_DEVICE_EPINTENCLR_TRFAIL0 | USB_DEVICE_EPINTENCLR_TRFAIL1; + } else if (ep & USB_EP_DIR_IN) { + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPINTENCLR.reg = USB_DEVICE_EPINTENCLR_TRFAIL1; + } else { + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPINTENCLR.reg = USB_DEVICE_EPINTENCLR_TRFAIL0; + } + } + + if (callback_type == USB_DEVICE_ENDPOINT_CALLBACK_RXSTP) { + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPINTENCLR.reg = USB_DEVICE_EPINTENCLR_RXSTP; + } + + if (callback_type == USB_DEVICE_ENDPOINT_CALLBACK_STALL) { + if (ep & USB_EP_DIR_IN) { + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPINTENCLR.reg = USB_DEVICE_EPINTENCLR_STALL1; + } else { + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPINTENCLR.reg = USB_DEVICE_EPINTENCLR_STALL0; + } + } + + return STATUS_OK; +} + +/** + * \brief Initializes an USB device endpoint configuration structure to defaults. + * + * Initializes a given USB device endpoint configuration structure to a + * set of known default values. This function should be called on all new + * instances of these configuration structures before being modified by the + * user application. + * + * The default configuration is as follows: + * \li endpoint address is 0 + * \li endpoint size is 8 bytes + * \li auto_zlp is false + * \li endpoint type is control + * + * \param[out] ep_config Configuration structure to initialize to default values + */ +void usb_device_endpoint_get_config_defaults(struct usb_device_endpoint_config *ep_config) +{ + /* Sanity check arguments */ + Assert(ep_config); + + /* Write default config to config struct */ + ep_config->ep_address = 0; + ep_config->ep_size = USB_ENDPOINT_8_BYTE; + ep_config->auto_zlp = false; + ep_config->ep_type = USB_DEVICE_ENDPOINT_TYPE_CONTROL; +} + +/** + * \brief Writes an USB device endpoint configuration to the hardware module. + * + * Writes out a given configuration of an USB device endpoint + * configuration to the hardware module. If the pipe is already configured, + * the new configuration will replace the existing one. + * + * \param[in] module_inst Pointer to USB software instance struct + * \param[in] ep_config Configuration settings for the endpoint + * + * \return Status of the device endpoint configuration operation + * \retval STATUS_OK The device endpoint was configured successfully + * \retval STATUS_ERR_DENIED The endpoint address is already configured + */ +enum status_code usb_device_endpoint_set_config(struct usb_module *module_inst, + struct usb_device_endpoint_config *ep_config) +{ + /* Sanity check arguments */ + Assert(module_inst); + Assert(ep_config); + + uint8_t ep_num = ep_config->ep_address & USB_EP_ADDR_MASK; + uint8_t ep_bank = (ep_config->ep_address & USB_EP_DIR_IN) ? 1 : 0; + + switch (ep_config->ep_type) { + case USB_DEVICE_ENDPOINT_TYPE_DISABLE: + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPCFG.reg = USB_DEVICE_EPCFG_EPTYPE0(0) | USB_DEVICE_EPCFG_EPTYPE1(0); + return STATUS_OK; + + case USB_DEVICE_ENDPOINT_TYPE_CONTROL: + if ((module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPCFG.reg & USB_DEVICE_EPCFG_EPTYPE0_Msk) == 0 && \ + (module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPCFG.reg & USB_DEVICE_EPCFG_EPTYPE1_Msk) == 0) { + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPCFG.reg = USB_DEVICE_EPCFG_EPTYPE0(1) | USB_DEVICE_EPCFG_EPTYPE1(1); + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPSTATUSSET.reg = USB_DEVICE_EPSTATUSSET_BK0RDY; + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPSTATUSCLR.reg = USB_DEVICE_EPSTATUSCLR_BK1RDY; + } else { + return STATUS_ERR_DENIED; + } + if (true == ep_config->auto_zlp) { + usb_descriptor_table.usb_endpoint_table[ep_num].DeviceDescBank[0].PCKSIZE.reg |= USB_DEVICE_PCKSIZE_AUTO_ZLP; + usb_descriptor_table.usb_endpoint_table[ep_num].DeviceDescBank[1].PCKSIZE.reg |= USB_DEVICE_PCKSIZE_AUTO_ZLP; + } else { + usb_descriptor_table.usb_endpoint_table[ep_num].DeviceDescBank[0].PCKSIZE.reg &= ~USB_DEVICE_PCKSIZE_AUTO_ZLP; + usb_descriptor_table.usb_endpoint_table[ep_num].DeviceDescBank[1].PCKSIZE.reg &= ~USB_DEVICE_PCKSIZE_AUTO_ZLP; + } + usb_descriptor_table.usb_endpoint_table[ep_num].DeviceDescBank[0].PCKSIZE.bit.SIZE = ep_config->ep_size; + usb_descriptor_table.usb_endpoint_table[ep_num].DeviceDescBank[1].PCKSIZE.bit.SIZE = ep_config->ep_size; + return STATUS_OK; + + case USB_DEVICE_ENDPOINT_TYPE_ISOCHRONOUS: + if (ep_bank) { + if ((module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPCFG.reg & USB_DEVICE_EPCFG_EPTYPE1_Msk) == 0){ + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPCFG.reg |= USB_DEVICE_EPCFG_EPTYPE1(2); + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPSTATUSCLR.reg = USB_DEVICE_EPSTATUSCLR_BK1RDY; + } else { + return STATUS_ERR_DENIED; + } + } else { + if ((module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPCFG.reg & USB_DEVICE_EPCFG_EPTYPE0_Msk) == 0){ + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPCFG.reg |= USB_DEVICE_EPCFG_EPTYPE0(2); + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPSTATUSSET.reg = USB_DEVICE_EPSTATUSSET_BK0RDY; + } else { + return STATUS_ERR_DENIED; + } + } + break; + + case USB_DEVICE_ENDPOINT_TYPE_BULK: + if (ep_bank) { + if ((module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPCFG.reg & USB_DEVICE_EPCFG_EPTYPE1_Msk) == 0){ + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPCFG.reg |= USB_DEVICE_EPCFG_EPTYPE1(3); + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPSTATUSCLR.reg = USB_DEVICE_EPSTATUSCLR_BK1RDY; + } else { + return STATUS_ERR_DENIED; + } + } else { + if ((module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPCFG.reg & USB_DEVICE_EPCFG_EPTYPE0_Msk) == 0){ + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPCFG.reg |= USB_DEVICE_EPCFG_EPTYPE0(3); + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPSTATUSSET.reg = USB_DEVICE_EPSTATUSSET_BK0RDY; + } else { + return STATUS_ERR_DENIED; + } + } + break; + + case USB_DEVICE_ENDPOINT_TYPE_INTERRUPT: + if (ep_bank) { + if ((module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPCFG.reg & USB_DEVICE_EPCFG_EPTYPE1_Msk) == 0){ + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPCFG.reg |= USB_DEVICE_EPCFG_EPTYPE1(4); + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPSTATUSCLR.reg = USB_DEVICE_EPSTATUSCLR_BK1RDY; + } else { + return STATUS_ERR_DENIED; + } + } else { + if ((module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPCFG.reg & USB_DEVICE_EPCFG_EPTYPE0_Msk) == 0){ + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPCFG.reg |= USB_DEVICE_EPCFG_EPTYPE0(4); + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPSTATUSSET.reg = USB_DEVICE_EPSTATUSSET_BK0RDY; + } else { + return STATUS_ERR_DENIED; + } + } + break; + + default: + break; + } + + usb_descriptor_table.usb_endpoint_table[ep_num].DeviceDescBank[ep_bank].PCKSIZE.bit.SIZE = ep_config->ep_size; + + if (true == ep_config->auto_zlp) { + usb_descriptor_table.usb_endpoint_table[ep_num].DeviceDescBank[ep_bank].PCKSIZE.reg |= USB_DEVICE_PCKSIZE_AUTO_ZLP; + } else { + usb_descriptor_table.usb_endpoint_table[ep_num].DeviceDescBank[ep_bank].PCKSIZE.reg &= ~USB_DEVICE_PCKSIZE_AUTO_ZLP; + } + + return STATUS_OK; +} + +/** + * \brief Check if current endpoint is configured + * + * \param module_inst Pointer to USB software instance struct + * \param ep Endpoint address (direction & number) + * + * \return \c true if endpoint is configured and ready to use + */ +bool usb_device_endpoint_is_configured(struct usb_module *module_inst, uint8_t ep) +{ + uint8_t ep_num = ep & USB_EP_ADDR_MASK; + uint8_t flag; + + if (ep & USB_EP_DIR_IN) { + flag = (uint8_t)(module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPCFG.bit.EPTYPE1); + } else { + flag = (uint8_t)(module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPCFG.bit.EPTYPE0); + } + return ((enum usb_device_endpoint_type)(flag) != USB_DEVICE_ENDPOINT_TYPE_DISABLE); +} + + +/** + * \brief Abort ongoing job on the endpoint + * + * \param module_inst Pointer to USB software instance struct + * \param ep Endpoint address + */ +void usb_device_endpoint_abort_job(struct usb_module *module_inst, uint8_t ep) +{ + uint8_t ep_num; + ep_num = ep & USB_EP_ADDR_MASK; + + // Stop transfer + if (ep & USB_EP_DIR_IN) { + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPSTATUSCLR.reg = USB_DEVICE_EPSTATUSCLR_BK1RDY; + // Eventually ack a transfer occur during abort + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPINTFLAG.reg = USB_DEVICE_EPINTFLAG_TRCPT1; + } else { + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPSTATUSSET.reg = USB_DEVICE_EPSTATUSSET_BK0RDY; + // Eventually ack a transfer occur during abort + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPINTFLAG.reg = USB_DEVICE_EPINTFLAG_TRCPT0; + } +} + +/** + * \brief Check if endpoint is halted + * + * \param module_inst Pointer to USB software instance struct + * \param ep Endpoint address + * + * \return \c true if the endpoint is halted + */ +bool usb_device_endpoint_is_halted(struct usb_module *module_inst, uint8_t ep) +{ + uint8_t ep_num = ep & USB_EP_ADDR_MASK; + + if (ep & USB_EP_DIR_IN) { + return (module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPSTATUS.reg & USB_DEVICE_EPSTATUSSET_STALLRQ1); + } else { + return (module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPSTATUS.reg & USB_DEVICE_EPSTATUSSET_STALLRQ0); + } +} + +/** + * \brief Halt the endpoint (send STALL) + * + * \param module_inst Pointer to USB software instance struct + * \param ep Endpoint address + */ +void usb_device_endpoint_set_halt(struct usb_module *module_inst, uint8_t ep) +{ + uint8_t ep_num = ep & USB_EP_ADDR_MASK; + + // Stall endpoint + if (ep & USB_EP_DIR_IN) { + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPSTATUSSET.reg = USB_DEVICE_EPSTATUSSET_STALLRQ1; + } else { + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPSTATUSSET.reg = USB_DEVICE_EPSTATUSSET_STALLRQ0; + } +} + +/** + * \brief Clear endpoint halt state + * + * \param module_inst Pointer to USB software instance struct + * \param ep Endpoint address + */ +void usb_device_endpoint_clear_halt(struct usb_module *module_inst, uint8_t ep) +{ + uint8_t ep_num = ep & USB_EP_ADDR_MASK; + + if (ep & USB_EP_DIR_IN) { + if (module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPSTATUS.reg & USB_DEVICE_EPSTATUSSET_STALLRQ1) { + // Remove stall request + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPSTATUSCLR.reg = USB_DEVICE_EPSTATUSCLR_STALLRQ1; + if (module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPINTFLAG.reg & USB_DEVICE_EPINTFLAG_STALL1) { + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPINTFLAG.reg = USB_DEVICE_EPINTFLAG_STALL1; + // The Stall has occurred, then reset data toggle + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPSTATUSCLR.reg = USB_DEVICE_EPSTATUSSET_DTGLIN; + } + } + } else { + if (module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPSTATUS.reg & USB_DEVICE_EPSTATUSSET_STALLRQ0) { + // Remove stall request + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPSTATUSCLR.reg = USB_DEVICE_EPSTATUSCLR_STALLRQ0; + if (module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPINTFLAG.reg & USB_DEVICE_EPINTFLAG_STALL0) { + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPINTFLAG.reg = USB_DEVICE_EPINTFLAG_STALL0; + // The Stall has occurred, then reset data toggle + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPSTATUSCLR.reg = USB_DEVICE_EPSTATUSSET_DTGLOUT; + } + } + } +} + +/** + * \brief Start write buffer job on a endpoint + * + * \param module_inst Pointer to USB module instance + * \param ep_num Endpoint number + * \param pbuf Pointer to buffer + * \param buf_size Size of buffer + * + * \return Status of procedure + * \retval STATUS_OK Job started successfully + * \retval STATUS_ERR_DENIED Endpoint is not ready + */ +enum status_code usb_device_endpoint_write_buffer_job(struct usb_module *module_inst,uint8_t ep_num, + uint8_t* pbuf, uint32_t buf_size) +{ + /* Sanity check arguments */ + Assert(module_inst); + Assert(module_inst->hw); + Assert(ep_num < USB_EPT_NUM); + + uint8_t flag; + flag = (uint8_t)(module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPCFG.bit.EPTYPE1); + if ((enum usb_device_endpoint_type)(flag) == USB_DEVICE_ENDPOINT_TYPE_DISABLE) { + return STATUS_ERR_DENIED; + }; + + /* get endpoint configuration from setting register */ + usb_descriptor_table.usb_endpoint_table[ep_num].DeviceDescBank[1].ADDR.reg = (uint32_t)pbuf; + usb_descriptor_table.usb_endpoint_table[ep_num].DeviceDescBank[1].PCKSIZE.bit.MULTI_PACKET_SIZE = 0; + usb_descriptor_table.usb_endpoint_table[ep_num].DeviceDescBank[1].PCKSIZE.bit.BYTE_COUNT = buf_size; + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPSTATUSSET.reg = USB_DEVICE_EPSTATUSSET_BK1RDY; + + return STATUS_OK; +} + +/** + * \brief Start read buffer job on a endpoint + * + * \param module_inst Pointer to USB module instance + * \param ep_num Endpoint number + * \param pbuf Pointer to buffer + * \param buf_size Size of buffer + * + * \return Status of procedure + * \retval STATUS_OK Job started successfully + * \retval STATUS_ERR_DENIED Endpoint is not ready + */ +enum status_code usb_device_endpoint_read_buffer_job(struct usb_module *module_inst,uint8_t ep_num, + uint8_t* pbuf, uint32_t buf_size) +{ + /* Sanity check arguments */ + Assert(module_inst); + Assert(module_inst->hw); + Assert(ep_num < USB_EPT_NUM); + + uint8_t flag; + flag = (uint8_t)(module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPCFG.bit.EPTYPE0); + if ((enum usb_device_endpoint_type)(flag) == USB_DEVICE_ENDPOINT_TYPE_DISABLE) { + return STATUS_ERR_DENIED; + }; + + /* get endpoint configuration from setting register */ + usb_descriptor_table.usb_endpoint_table[ep_num].DeviceDescBank[0].ADDR.reg = (uint32_t)pbuf; + usb_descriptor_table.usb_endpoint_table[ep_num].DeviceDescBank[0].PCKSIZE.bit.MULTI_PACKET_SIZE = buf_size; + usb_descriptor_table.usb_endpoint_table[ep_num].DeviceDescBank[0].PCKSIZE.bit.BYTE_COUNT = 0; + module_inst->hw->DEVICE.DeviceEndpoint[ep_num].EPSTATUSCLR.reg = USB_DEVICE_EPSTATUSCLR_BK0RDY; + + return STATUS_OK; +} + +/** + * \brief Start setup packet read job on a endpoint + * + * \param module_inst Pointer to USB device module instance + * \param pbuf Pointer to buffer + * + * \return Status of procedure + * \retval STATUS_OK Job started successfully + * \retval STATUS_ERR_DENIED Endpoint is not ready + */ +enum status_code usb_device_endpoint_setup_buffer_job(struct usb_module *module_inst, + uint8_t* pbuf) +{ + /* Sanity check arguments */ + Assert(module_inst); + Assert(module_inst->hw); + + /* get endpoint configuration from setting register */ + usb_descriptor_table.usb_endpoint_table[0].DeviceDescBank[0].ADDR.reg = (uint32_t)pbuf; + usb_descriptor_table.usb_endpoint_table[0].DeviceDescBank[0].PCKSIZE.bit.MULTI_PACKET_SIZE = 8; + usb_descriptor_table.usb_endpoint_table[0].DeviceDescBank[0].PCKSIZE.bit.BYTE_COUNT = 0; + module_inst->hw->DEVICE.DeviceEndpoint[0].EPSTATUSCLR.reg = USB_DEVICE_EPSTATUSCLR_BK0RDY; + + return STATUS_OK; +} + +static void _usb_device_interrupt_handler(void) +{ + uint16_t ep_inst; + uint16_t flags, flags_run; + ep_inst = _usb_instances->hw->DEVICE.EPINTSMRY.reg; + + /* device interrupt */ + if (0 == ep_inst) { + int i; + + /* get interrupt flags */ + flags = _usb_instances->hw->DEVICE.INTFLAG.reg; + flags_run = flags & + _usb_instances->device_enabled_callback_mask & + _usb_instances->device_registered_callback_mask; + + for (i = 0; i < USB_DEVICE_CALLBACK_N; i ++) { + if (flags & _usb_device_irq_bits[i]) { + _usb_instances->hw->DEVICE.INTFLAG.reg = + _usb_device_irq_bits[i]; + } + if (flags_run & _usb_device_irq_bits[i]) { + if (i == USB_DEVICE_CALLBACK_LPMSUSP) { + device_callback_lpm_wakeup_enable = + usb_descriptor_table.usb_endpoint_table[0].DeviceDescBank[0].EXTREG.bit.VARIABLE + & USB_LPM_ATTRIBUT_REMOTEWAKE_MASK; + } + (_usb_instances->device_callback[i])(_usb_instances, &device_callback_lpm_wakeup_enable); + } + } + + } else { + /* endpoint interrupt */ + + for (uint8_t i = 0; i < USB_EPT_NUM; i++) { + + if (ep_inst & (1 << i)) { + flags = _usb_instances->hw->DEVICE.DeviceEndpoint[i].EPINTFLAG.reg; + flags_run = flags & + _usb_instances->device_endpoint_enabled_callback_mask[i] & + _usb_instances->device_endpoint_registered_callback_mask[i]; + + // endpoint transfer stall interrupt + if (flags & USB_DEVICE_EPINTFLAG_STALL_Msk) { + if (_usb_instances->hw->DEVICE.DeviceEndpoint[i].EPINTFLAG.reg & USB_DEVICE_EPINTFLAG_STALL1) { + _usb_instances->hw->DEVICE.DeviceEndpoint[i].EPINTFLAG.reg = USB_DEVICE_EPINTFLAG_STALL1; + ep_callback_para.endpoint_address = USB_EP_DIR_IN | i; + } else if (_usb_instances->hw->DEVICE.DeviceEndpoint[i].EPINTFLAG.reg & USB_DEVICE_EPINTFLAG_STALL0) { + _usb_instances->hw->DEVICE.DeviceEndpoint[i].EPINTFLAG.reg = USB_DEVICE_EPINTFLAG_STALL0; + ep_callback_para.endpoint_address = USB_EP_DIR_OUT | i; + } + + if (flags_run & USB_DEVICE_EPINTFLAG_STALL_Msk) { + (_usb_instances->device_endpoint_callback[i][USB_DEVICE_ENDPOINT_CALLBACK_STALL])(_usb_instances,&ep_callback_para); + } + return; + } + + // endpoint received setup interrupt + if (flags & USB_DEVICE_EPINTFLAG_RXSTP) { + _usb_instances->hw->DEVICE.DeviceEndpoint[i].EPINTFLAG.reg = USB_DEVICE_EPINTFLAG_RXSTP; + if(_usb_instances->device_endpoint_enabled_callback_mask[i] & _usb_endpoint_irq_bits[USB_DEVICE_ENDPOINT_CALLBACK_RXSTP]) { + ep_callback_para.received_bytes = (uint16_t)(usb_descriptor_table.usb_endpoint_table[i].DeviceDescBank[0].PCKSIZE.bit.BYTE_COUNT); + (_usb_instances->device_endpoint_callback[i][USB_DEVICE_ENDPOINT_CALLBACK_RXSTP])(_usb_instances,&ep_callback_para); + } + return; + } + + // endpoint transfer complete interrupt + if (flags & USB_DEVICE_EPINTFLAG_TRCPT_Msk) { + if (_usb_instances->hw->DEVICE.DeviceEndpoint[i].EPINTFLAG.reg & USB_DEVICE_EPINTFLAG_TRCPT1) { + _usb_instances->hw->DEVICE.DeviceEndpoint[i].EPINTFLAG.reg = USB_DEVICE_EPINTFLAG_TRCPT1; + ep_callback_para.endpoint_address = USB_EP_DIR_IN | i; + ep_callback_para.sent_bytes = (uint16_t)(usb_descriptor_table.usb_endpoint_table[i].DeviceDescBank[1].PCKSIZE.bit.BYTE_COUNT); + + } else if (_usb_instances->hw->DEVICE.DeviceEndpoint[i].EPINTFLAG.reg & USB_DEVICE_EPINTFLAG_TRCPT0) { + _usb_instances->hw->DEVICE.DeviceEndpoint[i].EPINTFLAG.reg = USB_DEVICE_EPINTFLAG_TRCPT0; + ep_callback_para.endpoint_address = USB_EP_DIR_OUT | i; + ep_callback_para.received_bytes = (uint16_t)(usb_descriptor_table.usb_endpoint_table[i].DeviceDescBank[0].PCKSIZE.bit.BYTE_COUNT); + ep_callback_para.out_buffer_size = (uint16_t)(usb_descriptor_table.usb_endpoint_table[i].DeviceDescBank[0].PCKSIZE.bit.MULTI_PACKET_SIZE); + } + if(flags_run & USB_DEVICE_EPINTFLAG_TRCPT_Msk) { + (_usb_instances->device_endpoint_callback[i][USB_DEVICE_ENDPOINT_CALLBACK_TRCPT])(_usb_instances,&ep_callback_para); + } + return; + } + + // endpoint transfer fail interrupt + if (flags & USB_DEVICE_EPINTFLAG_TRFAIL_Msk) { + if (_usb_instances->hw->DEVICE.DeviceEndpoint[i].EPINTFLAG.reg & USB_DEVICE_EPINTFLAG_TRFAIL1) { + _usb_instances->hw->DEVICE.DeviceEndpoint[i].EPINTFLAG.reg = USB_DEVICE_EPINTFLAG_TRFAIL1; + if (usb_descriptor_table.usb_endpoint_table[i].DeviceDescBank[1].STATUS_BK.reg & USB_DEVICE_STATUS_BK_ERRORFLOW) { + usb_descriptor_table.usb_endpoint_table[i].DeviceDescBank[1].STATUS_BK.reg &= ~USB_DEVICE_STATUS_BK_ERRORFLOW; + } + ep_callback_para.endpoint_address = USB_EP_DIR_IN | i; + if (_usb_instances->hw->DEVICE.DeviceEndpoint[i].EPINTFLAG.reg & USB_DEVICE_EPINTFLAG_TRCPT1) { + return; + } + } else if(_usb_instances->hw->DEVICE.DeviceEndpoint[i].EPINTFLAG.reg & USB_DEVICE_EPINTFLAG_TRFAIL0) { + _usb_instances->hw->DEVICE.DeviceEndpoint[i].EPINTFLAG.reg = USB_DEVICE_EPINTFLAG_TRFAIL0; + if (usb_descriptor_table.usb_endpoint_table[i].DeviceDescBank[0].STATUS_BK.reg & USB_DEVICE_STATUS_BK_ERRORFLOW) { + usb_descriptor_table.usb_endpoint_table[i].DeviceDescBank[0].STATUS_BK.reg &= ~USB_DEVICE_STATUS_BK_ERRORFLOW; + } + ep_callback_para.endpoint_address = USB_EP_DIR_OUT | i; + if (_usb_instances->hw->DEVICE.DeviceEndpoint[i].EPINTFLAG.reg & USB_DEVICE_EPINTFLAG_TRCPT0) { + return; + } + } + + if(flags_run & USB_DEVICE_EPINTFLAG_TRFAIL_Msk) { + (_usb_instances->device_endpoint_callback[i][USB_DEVICE_ENDPOINT_CALLBACK_TRFAIL])(_usb_instances,&ep_callback_para); + } + return; + } + } + } + } +} + +/** + * \brief Enable the USB module peripheral + * + * \param module_inst pointer to USB module instance + */ +void usb_enable(struct usb_module *module_inst) +{ + Assert(module_inst); + Assert(module_inst->hw); + + module_inst->hw->DEVICE.CTRLA.reg |= USB_CTRLA_ENABLE; + while (module_inst->hw->DEVICE.SYNCBUSY.reg == USB_SYNCBUSY_ENABLE); +} + +/** + * \brief Disable the USB module peripheral + * + * \param module_inst pointer to USB module instance + */ +void usb_disable(struct usb_module *module_inst) +{ + Assert(module_inst); + Assert(module_inst->hw); + + module_inst->hw->DEVICE.INTENCLR.reg = USB_DEVICE_INTENCLR_MASK; + module_inst->hw->DEVICE.INTFLAG.reg = USB_DEVICE_INTFLAG_MASK; + module_inst->hw->DEVICE.CTRLA.reg &= ~USB_CTRLA_ENABLE; + while (module_inst->hw->DEVICE.SYNCBUSY.reg == USB_SYNCBUSY_ENABLE); +} + +/** + * \brief Interrupt handler for the USB module. + */ +void USB_0_Handler(void) +{ + if (_usb_instances->hw->DEVICE.CTRLA.bit.MODE) { + + } else { + /*device mode ISR */ + _usb_device_interrupt_handler(); + } +} + +void USB_1_Handler(void) +{ + _usb_device_interrupt_handler(); +} + +void USB_2_Handler(void) +{ + _usb_device_interrupt_handler(); +} + +void USB_3_Handler(void) +{ + _usb_device_interrupt_handler(); +} + +/** + * \brief Get the default USB module settings + * + * \param[out] module_config Configuration structure to initialize to default values + */ +void usb_get_config_defaults(struct usb_config *module_config) +{ + Assert(module_config); + + /* Sanity check arguments */ + Assert(module_config); + /* Write default configuration to config struct */ + module_config->select_host_mode = 0; + module_config->run_in_standby = 1; + module_config->source_generator = 0; + module_config->speed_mode = USB_SPEED_FULL; +} + +#define NVM_USB_PAD_TRANSN_POS 45 +#define NVM_USB_PAD_TRANSN_SIZE 5 +#define NVM_USB_PAD_TRANSP_POS 50 +#define NVM_USB_PAD_TRANSP_SIZE 5 +#define NVM_USB_PAD_TRIM_POS 55 +#define NVM_USB_PAD_TRIM_SIZE 3 + +/** + * \brief Initializes USB module instance + * + * Enables the clock and initializes the USB module, based on the given + * configuration values. + * + * \param[in,out] module_inst Pointer to the software module instance struct + * \param[in] hw Pointer to the USB hardware module + * \param[in] module_config Pointer to the USB configuration options struct + * + * \return Status of the initialization procedure. + * + * \retval STATUS_OK The module was initialized successfully + */ + +#define GCLK_USB 10 + +enum status_code usb_init(struct usb_module *module_inst, Usb *const hw, + struct usb_config *module_config) +{ + /* Sanity check arguments */ + Assert(hw); + Assert(module_inst); + Assert(module_config); + + uint32_t i,j; + uint32_t pad_transn, pad_transp, pad_trim; + + Gclk *pgclk = GCLK; + Mclk *pmclk = MCLK; + Port *pport = PORT; + Oscctrl *posc = OSCCTRL; + + _usb_instances = module_inst; + + /* Associate the software module instance with the hardware module */ + module_inst->hw = hw; + + //setup peripheral and synchronous bus clocks to USB + pmclk->AHBMASK.bit.USB_ = 1; + pmclk->APBBMASK.bit.USB_ = 1; + + /* Set up the USB DP/DN pins */ + pport->Group[0].PMUX[12].reg = 0x77; //PA24, PA25, function column H for USB D-, D+ + pport->Group[0].PINCFG[24].bit.PMUXEN = 1; + pport->Group[0].PINCFG[25].bit.PMUXEN = 1; + pport->Group[1].PMUX[11].bit.PMUXE = 7; //PB22, function column H for USB SOF_1KHz output + pport->Group[1].PINCFG[22].bit.PMUXEN = 1; + + //configure and enable DFLL for USB clock recovery mode at 48MHz + posc->DFLLCTRLA.bit.ENABLE = 0; + while (posc->DFLLSYNC.bit.ENABLE); + while (posc->DFLLSYNC.bit.DFLLCTRLB); + posc->DFLLCTRLB.bit.USBCRM = 1; + while (posc->DFLLSYNC.bit.DFLLCTRLB); + posc->DFLLCTRLB.bit.MODE = 1; + while (posc->DFLLSYNC.bit.DFLLCTRLB); + posc->DFLLCTRLB.bit.QLDIS = 0; + while (posc->DFLLSYNC.bit.DFLLCTRLB); + posc->DFLLCTRLB.bit.CCDIS = 1; + posc->DFLLMUL.bit.MUL = 0xbb80; //4800 x 1KHz + while (posc->DFLLSYNC.bit.DFLLMUL); + posc->DFLLCTRLA.bit.ENABLE = 1; + while (posc->DFLLSYNC.bit.ENABLE); + + /* Setup clock for module */ + pgclk->PCHCTRL[GCLK_USB].bit.GEN = 0; + pgclk->PCHCTRL[GCLK_USB].bit.CHEN = 1; + + /* Reset */ + hw->DEVICE.CTRLA.bit.SWRST = 1; + while (hw->DEVICE.SYNCBUSY.bit.SWRST) { + /* Sync wait */ + } + + /* Change QOS values to have the best performance and correct USB behaviour */ + USB->DEVICE.QOSCTRL.bit.CQOS = 2; + USB->DEVICE.QOSCTRL.bit.DQOS = 2; + + /* Load Pad Calibration */ + + pad_transn = (USB_FUSES_TRANSN_ADDR >> USB_FUSES_TRANSN_Pos) & USB_FUSES_TRANSN_Msk; + if (pad_transn == 0x1F) { + pad_transn = 5; + } + + hw->DEVICE.PADCAL.bit.TRANSN = pad_transn; + + pad_transp = (USB_FUSES_TRANSP_ADDR >> USB_FUSES_TRANSP_Pos) & USB_FUSES_TRANSP_Msk; + if (pad_transp == 0x1F) { + pad_transp = 29; + } + + hw->DEVICE.PADCAL.bit.TRANSP = pad_transp; + + pad_trim = (USB_FUSES_TRIM_ADDR >> USB_FUSES_TRIM_Pos) & USB_FUSES_TRIM_Msk; + if (pad_trim == 0x07) { + pad_trim = 3; + } + + hw->DEVICE.PADCAL.bit.TRIM = pad_trim; + + /* Set the configuration */ + hw->DEVICE.CTRLA.bit.MODE = module_config->select_host_mode; + hw->DEVICE.CTRLA.bit.RUNSTDBY = module_config->run_in_standby; + hw->DEVICE.DESCADD.reg = (uint32_t)(&usb_descriptor_table.usb_endpoint_table[0]); + if (USB_SPEED_FULL == module_config->speed_mode) { + module_inst->hw->DEVICE.CTRLB.bit.SPDCONF = USB_DEVICE_CTRLB_SPDCONF_FS_Val; + } else if(USB_SPEED_LOW == module_config->speed_mode) { + module_inst->hw->DEVICE.CTRLB.bit.SPDCONF = USB_DEVICE_CTRLB_SPDCONF_LS_Val; + } + + memset((uint8_t *)(&usb_descriptor_table.usb_endpoint_table[0]), 0, + sizeof(usb_descriptor_table.usb_endpoint_table)); + + /* device callback related */ + for (i = 0; i < USB_DEVICE_CALLBACK_N; i++) { + module_inst->device_callback[i] = NULL; + } + for (i = 0; i < USB_EPT_NUM; i++) { + for(j = 0; j < USB_DEVICE_EP_CALLBACK_N; j++) { + module_inst->device_endpoint_callback[i][j] = NULL; + } + } + module_inst->device_registered_callback_mask = 0; + module_inst->device_enabled_callback_mask = 0; + for (j = 0; j < USB_EPT_NUM; j++) { + module_inst->device_endpoint_registered_callback_mask[j] = 0; + module_inst->device_endpoint_enabled_callback_mask[j] = 0; + } + + /* Enable interrupts for this USB module */ + NVIC_EnableIRQ(USB_0_IRQn); + NVIC_EnableIRQ(USB_2_IRQn); + NVIC_EnableIRQ(USB_3_IRQn); + + return STATUS_OK; +} + |