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rename subfolder source to src

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hathach
2018-06-18 14:05:24 +07:00
parent b96e8c6cef
commit 424735d440
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src/portable/nordic/nrf5x/dcd_nrf5x.c
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/**************************************************************************/
/*!
@file dcd_nrf5x.c
@author hathach
@section LICENSE
Software License Agreement (BSD License)
Copyright (c) 2018, hathach (tinyusb.org)
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 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 the copyright holders nor the
names of its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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 "tusb_option.h"
#if MODE_DEVICE_SUPPORTED && CFG_TUSB_MCU == OPT_MCU_NRF5X
// TODO remove
#include "nrf.h"
#include "nrf_power.h"
#include "nrf_usbd.h"
#include "nrf_clock.h"
#include "nrf_drv_usbd_errata.h"
#include "device/dcd.h"
/*------------------------------------------------------------------*/
/* MACRO TYPEDEF CONSTANT ENUM
*------------------------------------------------------------------*/
enum
{
// Max allowed by USB specs
MAX_PACKET_SIZE = 64,
// Mask of all END event (IN & OUT) for all endpoints. ENDEPIN0-7, ENDEPOUT0-7, ENDISOIN, ENDISOOUT
EDPT_END_ALL_MASK = 0x1FFBFCUL
};
/*------------------------------------------------------------------*/
/* VARIABLE DECLARATION
*------------------------------------------------------------------*/
typedef struct
{
uint8_t* buffer;
uint16_t total_len;
uint16_t actual_len;
uint8_t mps; // max packet size
// FIXME nrf52840 does not NAK OUT packet properly
bool data_received;
} nom_xfer_t;
/*static*/ struct
{
struct
{
uint8_t* buffer;
uint16_t total_len;
uint16_t actual_len;
uint8_t dir;
}control;
// Non control: 7 endpoints IN & OUT (offset 1)
nom_xfer_t xfer[7][2];
volatile bool dma_running;
}_dcd;
void bus_reset(void)
{
for(int i=0; i<8; i++)
{
NRF_USBD->TASKS_STARTEPIN[i] = 0;
NRF_USBD->TASKS_STARTEPOUT[i] = 0;
}
NRF_USBD->TASKS_STARTISOIN = 0;
NRF_USBD->TASKS_STARTISOOUT = 0;
varclr_(&_dcd);
}
/*------------------------------------------------------------------*/
/* Controller API
*------------------------------------------------------------------*/
bool dcd_init (uint8_t rhport)
{
(void) rhport;
return true;
}
void dcd_connect (uint8_t rhport)
{
}
void dcd_disconnect (uint8_t rhport)
{
}
void dcd_set_address (uint8_t rhport, uint8_t dev_addr)
{
(void) rhport;
// Set Address is automatically update by hw controller
}
void dcd_set_config (uint8_t rhport, uint8_t config_num)
{
(void) rhport;
(void) config_num;
// Nothing to do
}
/*------------------------------------------------------------------*/
/* Control
*------------------------------------------------------------------*/
static void edpt_dma_start(uint8_t epnum, uint8_t dir)
{
// Only one dma could be active, TODO resolve when this is called in ISR and dma is running
while ( _dcd.dma_running )
{
TU_ASSERT ( 0 == (SCB->ICSR & SCB_ICSR_VECTACTIVE_Msk), );
}
_dcd.dma_running = true;
if ( dir == TUSB_DIR_OUT )
{
NRF_USBD->TASKS_STARTEPOUT[epnum] = 1;
} else
{
NRF_USBD->TASKS_STARTEPIN[epnum] = 1;
}
__ISB(); __DSB();
}
static void edpt_dma_end(void)
{
_dcd.dma_running = false;
}
static void xact_control_start(void)
{
// Each transaction is up to 64 bytes
uint8_t const xact_len = min16_of(_dcd.control.total_len-_dcd.control.actual_len, MAX_PACKET_SIZE);
if ( _dcd.control.dir == TUSB_DIR_OUT )
{
// TODO control out
NRF_USBD->EPOUT[0].PTR = (uint32_t) _dcd.control.buffer;
NRF_USBD->EPOUT[0].MAXCNT = xact_len;
NRF_USBD->TASKS_EP0RCVOUT = 1;
__ISB(); __DSB();
}else
{
NRF_USBD->EPIN[0].PTR = (uint32_t) _dcd.control.buffer;
NRF_USBD->EPIN[0].MAXCNT = xact_len;
edpt_dma_start(0, TUSB_DIR_IN);
}
_dcd.control.buffer += xact_len;
_dcd.control.actual_len += xact_len;
}
bool dcd_control_xfer (uint8_t rhport, tusb_dir_t dir, uint8_t * buffer, uint16_t length)
{
(void) rhport;
if ( length )
{
// Data Phase
_dcd.control.total_len = length;
_dcd.control.actual_len = 0;
_dcd.control.buffer = buffer;
_dcd.control.dir = (uint8_t) dir;
xact_control_start();
}else
{
// Status Phase
NRF_USBD->TASKS_EP0STATUS = 1;
__ISB(); __DSB();
}
return true;
}
/*------------------------------------------------------------------*/
/*
*------------------------------------------------------------------*/
static inline nom_xfer_t* get_td(uint8_t epnum, uint8_t dir)
{
return &_dcd.xfer[epnum-1][dir];
}
/*------------- Bulk/Int OUT transfer -------------*/
/**
* Prepare Bulk/Int out transaction, Endpoint start to accept/ACK Data
* @param epnum
*/
static void xact_out_prepare(uint8_t epnum)
{
// Write any value to size will allow hw to ACK (accept data)
NRF_USBD->SIZE.EPOUT[epnum] = 0;
__ISB(); __DSB();
}
static void xact_out_dma(uint8_t epnum)
{
nom_xfer_t* xfer = get_td(epnum, TUSB_DIR_OUT);
uint8_t const xact_len = NRF_USBD->SIZE.EPOUT[epnum];
// Trigger DMA move data from Endpoint -> SRAM
NRF_USBD->EPOUT[epnum].PTR = (uint32_t) xfer->buffer;
NRF_USBD->EPOUT[epnum].MAXCNT = xact_len;
edpt_dma_start(epnum, TUSB_DIR_OUT);
xfer->buffer += xact_len;
xfer->actual_len += xact_len;
}
/*------------- Bulk/Int IN transfer -------------*/
/**
* Prepare Bulk/Int in transaction, transfer data from Memory -> Endpoint
* @param epnum
*/
static void xact_in_prepare(uint8_t epnum)
{
nom_xfer_t* xfer = get_td(epnum, TUSB_DIR_IN);
// Each transaction is up to Max Packet Size
uint8_t const xact_len = min16_of(xfer->total_len - xfer->actual_len, xfer->mps);
NRF_USBD->EPIN[epnum].PTR = (uint32_t) xfer->buffer;
NRF_USBD->EPIN[epnum].MAXCNT = xact_len;
xfer->buffer += xact_len;
edpt_dma_start(epnum, TUSB_DIR_IN);
}
bool dcd_edpt_open (uint8_t rhport, tusb_desc_endpoint_t const * desc_edpt)
{
(void) rhport;
uint8_t const epnum = edpt_number(desc_edpt->bEndpointAddress);
uint8_t const dir = edpt_dir(desc_edpt->bEndpointAddress);
_dcd.xfer[epnum-1][dir].mps = desc_edpt->wMaxPacketSize.size;
if ( dir == TUSB_DIR_OUT )
{
NRF_USBD->INTENSET = BIT_(USBD_INTEN_ENDEPOUT0_Pos + epnum);
NRF_USBD->EPOUTEN |= BIT_(epnum);
}else
{
NRF_USBD->INTENSET = BIT_(USBD_INTEN_ENDEPIN0_Pos + epnum);
NRF_USBD->EPINEN |= BIT_(epnum);
}
__ISB(); __DSB();
return true;
}
bool dcd_edpt_xfer (uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t total_bytes)
{
(void) rhport;
uint8_t const epnum = edpt_number(ep_addr);
uint8_t const dir = edpt_dir(ep_addr);
nom_xfer_t* xfer = get_td(epnum, dir);
xfer->buffer = buffer;
xfer->total_len = total_bytes;
xfer->actual_len = 0;
if ( dir == TUSB_DIR_OUT )
{
if ( xfer->data_received )
{
xfer->data_received = false;
// FIXME nrf52840 does not NAK OUT packet properly
// Data already received preivously
xact_out_dma(epnum);
}else
{
xact_out_prepare(epnum);
}
}else
{
xact_in_prepare(epnum);
}
return true;
}
void dcd_edpt_stall (uint8_t rhport, uint8_t ep_addr)
{
(void) rhport;
if ( ep_addr == 0)
{
NRF_USBD->TASKS_EP0STALL = 1;
}else
{
NRF_USBD->EPSTALL = (USBD_EPSTALL_STALL_Stall << USBD_EPSTALL_STALL_Pos) | ep_addr;
}
__ISB(); __DSB();
}
void dcd_edpt_clear_stall (uint8_t rhport, uint8_t ep_addr)
{
(void) rhport;
if ( ep_addr )
{
NRF_USBD->EPSTALL = (USBD_EPSTALL_STALL_UnStall << USBD_EPSTALL_STALL_Pos) | ep_addr;
}
}
bool dcd_edpt_busy (uint8_t rhport, uint8_t ep_addr)
{
(void) rhport;
// USBD shouldn't check control endpoint state
if ( 0 == ep_addr ) return false;
uint8_t const epnum = edpt_number(ep_addr);
uint8_t const dir = edpt_dir(ep_addr);
nom_xfer_t* xfer = get_td(epnum, dir);
return xfer->actual_len < xfer->total_len;
}
/*------------------------------------------------------------------*/
/*
*------------------------------------------------------------------*/
void USBD_IRQHandler(void)
{
uint32_t const inten = NRF_USBD->INTEN;
uint32_t int_status = 0;
volatile uint32_t* regevt = &NRF_USBD->EVENTS_USBRESET;
for(int i=0; i<32; i++)
{
if ( BIT_TEST_(inten, i) && regevt[i] )
{
int_status |= BIT_(i);
// event clear
regevt[i] = 0;
__ISB(); __DSB();
}
}
/*------------- Interrupt Processing -------------*/
if ( int_status & USBD_INTEN_USBRESET_Msk )
{
bus_reset();
dcd_bus_event(0, USBD_BUS_EVENT_RESET);
}
if ( int_status & EDPT_END_ALL_MASK )
{
// DMA complete move data from SRAM -> Endpoint
edpt_dma_end();
}
/*------------- Control Transfer -------------*/
if ( int_status & USBD_INTEN_EP0SETUP_Msk )
{
uint8_t setup[8] = {
NRF_USBD->BMREQUESTTYPE, NRF_USBD->BREQUEST, NRF_USBD->WVALUEL, NRF_USBD->WVALUEH,
NRF_USBD->WINDEXL, NRF_USBD->WINDEXH, NRF_USBD->WLENGTHL, NRF_USBD->WLENGTHH
};
dcd_setup_received(0, setup);
}
if ( int_status & USBD_INTEN_EP0DATADONE_Msk )
{
if ( _dcd.control.dir == TUSB_DIR_OUT )
{
// OUT data from Host -> Endpoint
// Trigger DMA to move Endpoint -> SRAM
edpt_dma_start(0, TUSB_DIR_OUT);
}else
{
// IN: data transferred from Endpoint -> Host
if ( _dcd.control.actual_len < _dcd.control.total_len )
{
xact_control_start();
}else
{
// Control IN complete
dcd_control_complete(0, _dcd.control.actual_len);
}
}
}
// OUT data moved from Endpoint -> SRAM
if ( int_status & USBD_INTEN_ENDEPOUT0_Msk)
{
if ( _dcd.control.actual_len < _dcd.control.total_len )
{
xact_control_start();
}else
{
// Control OUT complete
dcd_control_complete(0, _dcd.control.actual_len);
}
}
/*------------- Bulk/Interrupt Transfer -------------*/
if ( int_status & USBD_INTEN_EPDATA_Msk)
{
uint32_t data_status = NRF_USBD->EPDATASTATUS;
nrf_usbd_epdatastatus_clear(data_status);
// In: data from Endpoint -> Host
for(uint8_t epnum=1; epnum<8; epnum++)
{
if ( BIT_TEST_(data_status, epnum ) )
{
nom_xfer_t* xfer = get_td(epnum, TUSB_DIR_IN);
xfer->actual_len += NRF_USBD->EPIN[epnum].MAXCNT;
if ( xfer->actual_len < xfer->total_len )
{
// more to xfer
xact_in_prepare(epnum);
} else
{
// BULK/INT IN complete
dcd_xfer_complete(0, epnum | TUSB_DIR_IN_MASK, xfer->actual_len, true);
}
}
}
// OUT: data from Host -> Endpoint
for(uint8_t epnum=1; epnum<8; epnum++)
{
if ( BIT_TEST_(data_status, 16+epnum ) )
{
nom_xfer_t* xfer = get_td(epnum, TUSB_DIR_OUT);
if (xfer->actual_len < xfer->total_len)
{
xact_out_dma(epnum);
}else
{
// FIXME nrf52840 does not NAK OUT packet properly
// It will always ACK next package although we haven't write to SIZE yet
// Mark this endpoint with data received
xfer->data_received = true;
}
}
}
}
// OUT: data from DMA -> SRAM
for(uint8_t epnum=1; epnum<8; epnum++)
{
if ( BIT_TEST_(int_status, USBD_INTEN_ENDEPOUT0_Pos+epnum) )
{
nom_xfer_t* xfer = get_td(epnum, TUSB_DIR_OUT);
uint8_t const xact_len = NRF_USBD->EPOUT[epnum].AMOUNT;
// Transfer complete if transaction len < Max Packet Size or total len is transferred
if ( (xact_len == xfer->mps) && (xfer->actual_len < xfer->total_len) )
{
// Prepare for more data from Host -> Endpoint
xact_out_prepare(epnum);
}else
{
xfer->total_len = xfer->actual_len;
// BULK/INT OUT complete
dcd_xfer_complete(0, epnum, xfer->actual_len, true);
}
}
}
// SOF interrupt
if ( int_status & USBD_INTEN_SOF_Msk )
{
dcd_bus_event(0, USBD_BUS_EVENT_SOF);
}
}
#endif
src/portable/nordic/nrf5x/hal_nrf5x.c
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/**************************************************************************/
/*!
@file hal_nrf5x.c
@author hathach
@section LICENSE
Software License Agreement (BSD License)
Copyright (c) 2018, hathach (tinyusb.org)
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 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 the copyright holders nor the
names of its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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 "tusb_option.h"
#if MODE_DEVICE_SUPPORTED && CFG_TUSB_MCU == OPT_MCU_NRF5X
#include <stdbool.h>
#include "nrf.h"
#include "nrf_gpio.h"
#include "nrf_clock.h"
#include "nrf_usbd.h"
#include "nrf_drv_usbd_errata.h"
#include "app_util_platform.h"
#ifdef SOFTDEVICE_PRESENT
#include "nrf_sdm.h"
#include "nrf_soc.h"
#else
#include "nrf_drv_power.h"
#endif
#include "tusb_hal.h"
/*------------------------------------------------------------------*/
/* MACRO TYPEDEF CONSTANT ENUM
*------------------------------------------------------------------*/
#define USB_NVIC_PRIO 7
// TODO switch to use nrfx_power.h in sdk15
enum
{
NRFX_POWER_USB_EVT_DETECTED = 0,
NRFX_POWER_USB_EVT_REMOVED,
NRFX_POWER_USB_EVT_READY
};
/*------------------------------------------------------------------*/
/* FUNCTION DECLARATION
*------------------------------------------------------------------*/
void tusb_hal_nrf_power_event(uint32_t event);
/*------------------------------------------------------------------*/
/* HFCLK helper
*------------------------------------------------------------------*/
// check if SD is present and enabled
static bool is_sd_enabled(void)
{
uint8_t sd_en = false;
#ifdef SOFTDEVICE_PRESENT
(void) sd_softdevice_is_enabled(&sd_en);
#endif
return sd_en;
}
static bool hfclk_running(void)
{
#ifdef SOFTDEVICE_PRESENT
if ( is_sd_enabled() )
{
uint32_t is_running;
(void) sd_clock_hfclk_is_running(&is_running);
return (is_running ? true : false);
}
#endif
return nrf_clock_hf_is_running(NRF_CLOCK_HFCLK_HIGH_ACCURACY);
}
static void hfclk_enable(void)
{
// already running, nothing to do
if ( hfclk_running() ) return;
#ifdef SOFTDEVICE_PRESENT
if ( is_sd_enabled() )
{
(void)sd_clock_hfclk_request();
return;
}
#endif
nrf_clock_event_clear(NRF_CLOCK_EVENT_HFCLKSTARTED);
nrf_clock_task_trigger(NRF_CLOCK_TASK_HFCLKSTART);
}
static void hfclk_disable(void)
{
#ifdef SOFTDEVICE_PRESENT
if ( is_sd_enabled() )
{
(void)sd_clock_hfclk_release();
return;
}
#endif
nrf_clock_task_trigger(NRF_CLOCK_TASK_HFCLKSTOP);
}
/*------------------------------------------------------------------*/
/* TUSB HAL
*------------------------------------------------------------------*/
// tusb_hal_nrf_power_event must be called by SOC event handler
bool tusb_hal_init(void)
{
#ifdef SOFTDEVICE_PRESENT
if ( is_sd_enabled() )
{
sd_power_usbdetected_enable(true);
sd_power_usbpwrrdy_enable(true);
sd_power_usbremoved_enable(true);
// USB power may already be ready at this time -> no event generated
// We need to execute the handler based on the status
uint32_t usb_reg;
sd_power_usbregstatus_get(&usb_reg);
if (usb_reg & POWER_USBREGSTATUS_VBUSDETECT_Msk )
{
tusb_hal_nrf_power_event(NRFX_POWER_USB_EVT_DETECTED);
}
if (usb_reg & POWER_USBREGSTATUS_OUTPUTRDY_Msk )
{
tusb_hal_nrf_power_event(NRFX_POWER_USB_EVT_READY);
}
}
#endif
return true;
}
void tusb_hal_int_enable(uint8_t rhport)
{
(void) rhport;
NVIC_EnableIRQ(USBD_IRQn);
}
void tusb_hal_int_disable(uint8_t rhport)
{
(void) rhport;
NVIC_DisableIRQ(USBD_IRQn);
}
/*------------------------------------------------------------------*/
/* Controller Start up Sequence (USBD 51.4 specs)
*------------------------------------------------------------------*/
void tusb_hal_nrf_power_event (uint32_t event)
{
switch ( event )
{
case NRFX_POWER_USB_EVT_DETECTED:
if ( !NRF_USBD->ENABLE )
{
/* Prepare for READY event receiving */
nrf_usbd_eventcause_clear(NRF_USBD_EVENTCAUSE_READY_MASK);
/* Enable the peripheral */
// ERRATA 171, 187, 166
// Somehow Errata 187 check failed for pca10056 1.0.0 (2018.19)
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();
}
nrf_usbd_enable();
// Enable HFCLK
hfclk_enable();
}
break;
case NRFX_POWER_USB_EVT_READY:
/* Waiting for USBD peripheral enabled */
while ( !(USBD_EVENTCAUSE_READY_Msk & NRF_USBD->EVENTCAUSE) ) { }
nrf_usbd_eventcause_clear(USBD_EVENTCAUSE_READY_Msk);
nrf_usbd_event_clear(USBD_EVENTCAUSE_READY_Msk);
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();
}
// Somehow Errata 187 check failed for pca10056 1.0.0 (2018.19)
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);
// Enable interrupt. SOF is used as CDC auto flush
NRF_USBD->INTENSET = USBD_INTEN_USBRESET_Msk | USBD_INTEN_USBEVENT_Msk | USBD_INTEN_ACCESSFAULT_Msk |
USBD_INTEN_EP0SETUP_Msk | USBD_INTEN_EP0DATADONE_Msk | USBD_INTEN_ENDEPIN0_Msk | USBD_INTEN_ENDEPOUT0_Msk |
USBD_INTEN_EPDATA_Msk | ((CFG_TUD_CDC && CFG_TUD_CDC_FLUSH_ON_SOF) ? USBD_INTEN_SOF_Msk : 0);
// Enable interrupt, Priorities 0,1,4,5 (nRF52) are reserved for SoftDevice
NVIC_SetPriority(USBD_IRQn, USB_NVIC_PRIO);
NVIC_ClearPendingIRQ(USBD_IRQn);
NVIC_EnableIRQ(USBD_IRQn);
// Wait for HFCLK
while ( !hfclk_running() )
{
}
// Enable pull up
nrf_usbd_pullup_enable();
break;
case NRFX_POWER_USB_EVT_REMOVED:
if ( NRF_USBD->ENABLE )
{
// Abort all transfers
// Disable pull up
nrf_usbd_pullup_disable();
// Disable Interrupt
NVIC_DisableIRQ(USBD_IRQn);
// disable all interrupt
NRF_USBD->INTENCLR = NRF_USBD->INTEN;
nrf_usbd_disable();
hfclk_disable();
}
break;
default: break;
}
}
#endif