diff options
| -rw-r--r-- | at91lib/peripherals/tc/tc.h | 74 | ||||
| -rw-r--r-- | usb-device-cdc-serial-project/Makefile | 163 | ||||
| -rw-r--r-- | usb-device-cdc-serial-project/bin/.empty | 0 | ||||
| -rw-r--r-- | usb-device-cdc-serial-project/main.c | 728 | ||||
| -rw-r--r-- | usb-device-cdc-serial-project/obj/.empty | 0 |
5 files changed, 965 insertions, 0 deletions
diff --git a/at91lib/peripherals/tc/tc.h b/at91lib/peripherals/tc/tc.h new file mode 100644 index 0000000..8bf96e5 --- /dev/null +++ b/at91lib/peripherals/tc/tc.h @@ -0,0 +1,74 @@ +/* ----------------------------------------------------------------------------
+ * ATMEL Microcontroller Software Support
+ * ----------------------------------------------------------------------------
+ * Copyright (c) 2008, Atmel Corporation
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the disclaimer below.
+ *
+ * Atmel's name may not be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * DISCLAIMER: 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
+ * 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.
+ * ----------------------------------------------------------------------------
+ */
+
+//------------------------------------------------------------------------------
+/// \unit
+///
+/// !Purpose
+///
+/// API for configuring and using Timer Counter (TC) peripherals.
+///
+/// !Usage
+/// -# Optionally, use TC_FindMckDivisor() to let the program find the best
+/// TCCLKS field value automatically.
+/// -# Configure a Timer Counter in the desired mode using TC_Configure().
+/// -# Start or stop the timer clock using TC_Start() and TC_Stop().
+//------------------------------------------------------------------------------
+
+#ifndef TC_H
+#define TC_H
+
+//------------------------------------------------------------------------------
+// Headers
+//------------------------------------------------------------------------------
+
+#include <board.h>
+
+#if !defined(AT91C_ID_TC0) && defined(AT91C_ID_TC012)
+ #define AT91C_ID_TC0 AT91C_ID_TC012
+#endif
+
+//------------------------------------------------------------------------------
+// Global functions
+//------------------------------------------------------------------------------
+
+extern void TC_Configure(AT91S_TC *pTc, unsigned int mode);
+
+extern void TC_Start(AT91S_TC *pTc);
+
+extern void TC_Stop(AT91S_TC *pTc);
+
+extern unsigned char TC_FindMckDivisor(
+ unsigned int freq,
+ unsigned int mck,
+ unsigned int *div,
+ unsigned int *tcclks);
+
+#endif //#ifndef TC_H
+
diff --git a/usb-device-cdc-serial-project/Makefile b/usb-device-cdc-serial-project/Makefile new file mode 100644 index 0000000..cf8b126 --- /dev/null +++ b/usb-device-cdc-serial-project/Makefile @@ -0,0 +1,163 @@ +# ----------------------------------------------------------------------------
+# ATMEL Microcontroller Software Support
+# ----------------------------------------------------------------------------
+# Copyright (c) 2008, Atmel Corporation
+#
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# - Redistributions of source code must retain the above copyright notice,
+# this list of conditions and the disclaimer below.
+#
+# Atmel's name may not be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# DISCLAIMER: 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
+# 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.
+# ----------------------------------------------------------------------------
+
+# Makefile for compiling the USB CDC serial project
+
+#-------------------------------------------------------------------------------
+# User-modifiable options
+#-------------------------------------------------------------------------------
+
+# Chip & board used for compilation
+# (can be overriden by adding CHIP=chip and BOARD=board to the command-line)
+CHIP = at91sam7s256
+BOARD = at91sam7s-ek
+
+# Trace level used for compilation
+# (can be overriden by adding TRACE_LEVEL=#number to the command-line)
+# TRACE_LEVEL_DEBUG 5
+# TRACE_LEVEL_INFO 4
+# TRACE_LEVEL_WARNING 3
+# TRACE_LEVEL_ERROR 2
+# TRACE_LEVEL_FATAL 1
+# TRACE_LEVEL_NO_TRACE 0
+TRACE_LEVEL = 3
+
+# Optimization level, put in comment for debugging
+OPTIMIZATION = -Os
+
+# AT91 library directory
+AT91LIB = ../at91lib
+
+# Output file basename
+OUTPUT = usb-device-cdc-serial-project-$(BOARD)-$(CHIP)
+
+# Compile for all memories available on the board (this sets $(MEMORIES))
+include $(AT91LIB)/boards/$(BOARD)/board.mak
+
+# Output directories
+BIN = bin
+OBJ = obj
+
+#-------------------------------------------------------------------------------
+# Tools
+#-------------------------------------------------------------------------------
+
+# Tool suffix when cross-compiling
+CROSS_COMPILE = arm-none-eabi-
+
+# Compilation tools
+CC = $(CROSS_COMPILE)gcc
+SIZE = $(CROSS_COMPILE)size
+OBJCOPY = $(CROSS_COMPILE)objcopy
+
+# Flags
+INCLUDES = -I$(AT91LIB)/boards/$(BOARD) -I$(AT91LIB)/peripherals
+INCLUDES += -I$(AT91LIB)/components -I$(AT91LIB)/usb/device -I$(AT91LIB)
+
+CFLAGS = -Wall -mlong-calls -ffunction-sections
+CFLAGS += -g $(OPTIMIZATION) $(INCLUDES) -D$(CHIP) -DTRACE_LEVEL=$(TRACE_LEVEL)
+ASFLAGS = -g $(OPTIMIZATION) $(INCLUDES) -D$(CHIP) -D__ASSEMBLY__
+LDFLAGS = -g $(OPTIMIZATION) -nostartfiles -Wl,--gc-sections
+
+#-------------------------------------------------------------------------------
+# Files
+#-------------------------------------------------------------------------------
+
+# Directories where source files can be found
+USB = $(AT91LIB)/usb
+UTILITY = $(AT91LIB)/utility
+PERIPH = $(AT91LIB)/peripherals
+BOARDS = $(AT91LIB)/boards
+
+VPATH += $(USB)/device/cdc-serial $(USB)/device/core $(USB)/common/core
+VPATH += $(USB)/common/cdc
+VPATH += $(UTILITY)
+VPATH += $(PERIPH)/dbgu $(PERIPH)/aic $(PERIPH)/usart $(PERIPH)/pio $(PERIPH)/pmc
+VPATH += $(PERIPH)/cp15
+VPATH += $(BOARDS)/$(BOARD) $(BOARDS)/$(BOARD)/$(CHIP)
+
+# Objects built from C source files
+C_OBJECTS = main.o
+C_OBJECTS += CDCDSerialDriver.o CDCDSerialDriverDescriptors.o
+C_OBJECTS += CDCSetControlLineStateRequest.o CDCLineCoding.o
+C_OBJECTS += USBD_OTGHS.o USBD_UDP.o USBD_UDPHS.o USBDDriver.o
+C_OBJECTS += USBDCallbacks_Initialized.o
+C_OBJECTS += USBDCallbacks_Reset.o
+#C_OBJECTS += USBDCallbacks_Resumed.o
+#C_OBJECTS += USBDCallbacks_Suspended.o
+C_OBJECTS += USBDDriverCb_CfgChanged.o
+C_OBJECTS += USBDDriverCb_IfSettingChanged.o
+C_OBJECTS += USBSetAddressRequest.o USBGenericDescriptor.o USBInterfaceRequest.o
+C_OBJECTS += USBGenericRequest.o USBGetDescriptorRequest.o
+C_OBJECTS += USBSetConfigurationRequest.o USBFeatureRequest.o
+C_OBJECTS += USBEndpointDescriptor.o USBConfigurationDescriptor.o
+C_OBJECTS += led.o string.o stdio.o
+C_OBJECTS += aic.o dbgu.o usart.o pio.o pio_it.o pmc.o cp15.o
+C_OBJECTS += board_memories.o board_lowlevel.o
+
+# Objects built from Assembly source files
+ASM_OBJECTS = board_cstartup.o
+ASM_OBJECTS += cp15_asm.o
+
+# Append OBJ and BIN directories to output filename
+OUTPUT := $(BIN)/$(OUTPUT)
+
+#-------------------------------------------------------------------------------
+# Rules
+#-------------------------------------------------------------------------------
+
+all: $(BIN) $(OBJ) $(MEMORIES)
+
+$(BIN) $(OBJ):
+ mkdir $@
+
+define RULES
+C_OBJECTS_$(1) = $(addprefix $(OBJ)/$(1)_, $(C_OBJECTS))
+ASM_OBJECTS_$(1) = $(addprefix $(OBJ)/$(1)_, $(ASM_OBJECTS))
+
+$(1): $$(ASM_OBJECTS_$(1)) $$(C_OBJECTS_$(1))
+ $(CC) $(LDFLAGS) -T"$(AT91LIB)/boards/$(BOARD)/$(CHIP)/$$@.lds" -o $(OUTPUT)-$$@.elf $$^
+ $(OBJCOPY) -O binary $(OUTPUT)-$$@.elf $(OUTPUT)-$$@.bin
+ $(SIZE) $$^ $(OUTPUT)-$$@.elf
+
+$$(C_OBJECTS_$(1)): $(OBJ)/$(1)_%.o: %.c Makefile $(OBJ) $(BIN)
+ $(CC) $(CFLAGS) -D$(1) -c -o $$@ $$<
+
+$$(ASM_OBJECTS_$(1)): $(OBJ)/$(1)_%.o: %.S Makefile $(OBJ) $(BIN)
+ $(CC) $(ASFLAGS) -D$(1) -c -o $$@ $$<
+
+debug_$(1): $(1)
+ perl ../resources/gdb/debug.pl $(OUTPUT)-$(1).elf
+
+endef
+
+$(foreach MEMORY, $(MEMORIES), $(eval $(call RULES,$(MEMORY))))
+
+clean:
+ -rm -f $(OBJ)/*.o $(BIN)/*.bin $(BIN)/*.elf
+
diff --git a/usb-device-cdc-serial-project/bin/.empty b/usb-device-cdc-serial-project/bin/.empty new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/usb-device-cdc-serial-project/bin/.empty diff --git a/usb-device-cdc-serial-project/main.c b/usb-device-cdc-serial-project/main.c new file mode 100644 index 0000000..1f4e1e7 --- /dev/null +++ b/usb-device-cdc-serial-project/main.c @@ -0,0 +1,728 @@ +/* ----------------------------------------------------------------------------
+ * ATMEL Microcontroller Software Support
+ * ----------------------------------------------------------------------------
+ * Copyright (c) 2008, Atmel Corporation
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the disclaimer below.
+ *
+ * Atmel's name may not be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * DISCLAIMER: 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
+ * 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.
+ * ----------------------------------------------------------------------------
+ */
+
+//-----------------------------------------------------------------------------
+/// \dir "USB CDC serial converter"
+///
+/// !!!Purpose
+///
+/// The USB CDC Serial Project will help you to get familiar with the
+/// USB Device Port(UDP) and USART interface on AT91SAM microcontrollers. Also
+/// it can help you to be familiar with the USB Framework that is used for
+/// rapid development of USB-compliant class drivers such as USB Communication
+/// Device class (CDC).
+///
+/// You can find following information depends on your needs:
+/// - Sample usage of USB CDC driver and USART driver.
+/// - USB CDC driver development based on the AT91 USB Framework.
+/// - USB enumerate sequence, the standard and class-specific descriptors and
+/// requests handling.
+/// - The initialize sequence and usage of UDP interface.
+/// - The initialize sequence and usage of USART interface with PDC.
+///
+/// !See
+/// - usart: USART interface driver
+/// - tc: TIMER/COUNTER interface driver
+/// - usb: USB Framework, USB CDC driver and UDP interface driver
+/// - "AT91 USB device framework"
+/// - "USBD API"
+/// - "cdc-serial"
+/// - "USB CDC Serial Device"
+/// - "USB CDC Serial Host Driver"
+///
+/// !!!Requirements
+///
+/// This package can be used with all Atmel evaluation kits that have both
+/// UDP and USART interface.
+///
+/// The current supported board list:
+/// - at91sam7s-ek (exclude at91sam7s32)
+/// - at91sam7x-ek
+/// - at91sam7xc-ek
+/// - at91sam7a3-ek
+/// - at91sam7se-ek
+/// - at91sam9260-ek
+/// - at91sam9263-ek
+///
+/// !!!Description
+///
+/// When an EK running this program connected to a host (PC for example), with
+/// USB cable, the EK appears as a Seriao COM port for the host, after driver
+/// installation with the offered 6119.inf. Then the host can send or receive
+/// data through the port with host software. The data stream from the host is
+/// then sent to the EK, and forward to USART port of AT91SAM chips. The USART
+/// port of the EK is monitored by the timer and the incoming data will be sent
+/// to the host.
+///
+/// !!!Usage
+///
+/// -# Build the program and download it inside the evaluation board. Please
+/// refer to the
+/// <a href="http://www.atmel.com/dyn/resources/prod_documents/doc6224.pdf">
+/// SAM-BA User Guide</a>, the
+/// <a href="http://www.atmel.com/dyn/resources/prod_documents/doc6310.pdf">
+/// GNU-Based Software Development</a> application note or to the
+/// <a href="ftp://ftp.iar.se/WWWfiles/arm/Guides/EWARM_UserGuide.ENU.pdf">
+/// IAR EWARM User Guide</a>, depending on your chosen solution.
+/// -# On the computer, open and configure a terminal application
+/// (e.g. HyperTerminal on Microsoft Windows) with these settings:
+/// - 115200 bauds
+/// - 8 bits of data
+/// - No parity
+/// - 1 stop bit
+/// - No flow control
+/// -# Start the application.
+/// -# In the terminal window, the following text should appear:
+/// \code
+/// -- USB Device CDC Serial Project xxx --
+/// -- AT91xxxxxx-xx
+/// -- Compiled: xxx xx xxxx xx:xx:xx --
+/// \endcode
+/// -# When connecting USB cable to windows, the LED blinks, and the host
+/// reports a new USB %device attachment (if it's the first time you connect
+/// an %audio speaker demo board to your host). You can use the inf file
+/// at91lib\\usb\\device\\cdc-serial\\drv\\6119.inf to install the serial
+/// port. Then new "AT91 USB to Serial Converter (COMx)" appears in the
+/// hardware %device list.
+/// -# You can run hyperterminal to send data to the port. And it can be seen
+/// at the other hyperterminal connected to the USART port of the EK.
+///
+//-----------------------------------------------------------------------------
+
+//-----------------------------------------------------------------------------
+/// \unit
+///
+/// !Purpose
+///
+/// This file contains all the specific code for the
+/// usb-device-cdc-serial-project
+///
+/// !Contents
+///
+/// The code can be roughly broken down as follows:
+/// - Configuration functions
+/// - VBus_Configure
+/// - PIO & Timer configurations in start of main
+/// - Interrupt handlers
+/// - ISR_Vbus
+/// - ISR_Timer0
+/// - ISR_Usart0
+/// - Callback functions
+/// - UsbDataReceived
+/// - The main function, which implements the program behavior
+///
+/// Please refer to the list of functions in the #Overview# tab of this unit
+/// for more detailed information.
+//-----------------------------------------------------------------------------
+
+//-----------------------------------------------------------------------------
+// Headers
+//------------------------------------------------------------------------------
+
+#include <board.h>
+#include <pio/pio.h>
+#include <pio/pio_it.h>
+#include <aic/aic.h>
+#include <tc/tc.h>
+#include <usart/usart.h>
+#include <utility/trace.h>
+#include <utility/led.h>
+#include <usb/device/cdc-serial/CDCDSerialDriver.h>
+#include <usb/device/cdc-serial/CDCDSerialDriverDescriptors.h>
+#include <pmc/pmc.h>
+
+//------------------------------------------------------------------------------
+// Definitions
+//------------------------------------------------------------------------------
+#ifndef AT91C_ID_TC0
+ #define AT91C_ID_TC0 AT91C_ID_TC
+#endif
+
+/// Size in bytes of the buffer used for reading data from the USB & USART
+#define DATABUFFERSIZE \
+ BOARD_USB_ENDPOINTS_MAXPACKETSIZE(CDCDSerialDriverDescriptors_DATAIN)
+
+/// Use for power management
+#define STATE_IDLE 0
+/// The USB device is in suspend state
+#define STATE_SUSPEND 4
+/// The USB device is in resume state
+#define STATE_RESUME 5
+
+//------------------------------------------------------------------------------
+// Internal variables
+//------------------------------------------------------------------------------
+/// State of USB, for suspend and resume
+unsigned char USBState = STATE_IDLE;
+
+/// List of pins that must be configured for use by the application.
+static const Pin pins[] = {PIN_USART0_TXD, PIN_USART0_RXD};
+
+/// Double-buffer for storing incoming USART data.
+static unsigned char usartBuffers[2][DATABUFFERSIZE];
+
+/// Current USART buffer index.
+static unsigned char usartCurrentBuffer = 0;
+
+/// Buffer for storing incoming USB data.
+static unsigned char usbBuffer[DATABUFFERSIZE];
+
+//------------------------------------------------------------------------------
+// VBus monitoring (optional)
+//------------------------------------------------------------------------------
+#if defined(PIN_USB_VBUS)
+
+#define VBUS_CONFIGURE() VBus_Configure()
+
+/// VBus pin instance.
+static const Pin pinVbus = PIN_USB_VBUS;
+
+//------------------------------------------------------------------------------
+/// Handles interrupts coming from PIO controllers.
+//------------------------------------------------------------------------------
+static void ISR_Vbus(const Pin *pPin)
+{
+ // Check current level on VBus
+ if (PIO_Get(&pinVbus)) {
+
+ TRACE_INFO("VBUS conn\n\r");
+ USBD_Connect();
+ }
+ else {
+
+ TRACE_INFO("VBUS discon\n\r");
+ USBD_Disconnect();
+ }
+}
+
+//------------------------------------------------------------------------------
+/// Configures the VBus pin to trigger an interrupt when the level on that pin
+/// changes.
+//------------------------------------------------------------------------------
+static void VBus_Configure( void )
+{
+ TRACE_INFO("VBus configuration\n\r");
+
+ // Configure PIO
+ PIO_Configure(&pinVbus, 1);
+ PIO_ConfigureIt(&pinVbus, ISR_Vbus);
+ PIO_EnableIt(&pinVbus);
+
+ // Check current level on VBus
+ if (PIO_Get(&pinVbus)) {
+
+ // if VBUS present, force the connect
+ TRACE_INFO("VBUS conn\n\r");
+ USBD_Connect();
+ }
+ else {
+ USBD_Disconnect();
+ }
+}
+
+#else
+ #define VBUS_CONFIGURE() USBD_Connect()
+#endif //#if defined(PIN_USB_VBUS)
+
+#if defined (CP15_PRESENT)
+//------------------------------------------------------------------------------
+/// Put the CPU in 32kHz, disable PLL, main oscillator
+/// Put voltage regulator in standby mode
+//------------------------------------------------------------------------------
+void LowPowerMode(void)
+{
+ PMC_CPUInIdleMode();
+}
+//------------------------------------------------------------------------------
+/// Put voltage regulator in normal mode
+/// Return the CPU to normal speed 48MHz, enable PLL, main oscillator
+//------------------------------------------------------------------------------
+void NormalPowerMode(void)
+{
+}
+
+#elif defined(at91sam7a3)
+//------------------------------------------------------------------------------
+/// Put the CPU in 32kHz, disable PLL, main oscillator
+//------------------------------------------------------------------------------
+void LowPowerMode(void)
+{
+ // MCK=48MHz to MCK=32kHz
+ // MCK = SLCK/2 : change source first from 48 000 000 to 18. / 2 = 9M
+ AT91C_BASE_PMC->PMC_MCKR = AT91C_PMC_PRES_CLK_2;
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY ) );
+ // MCK=SLCK : then change prescaler
+ AT91C_BASE_PMC->PMC_MCKR = AT91C_PMC_CSS_SLOW_CLK;
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY ) );
+ // disable PLL
+ AT91C_BASE_PMC->PMC_PLLR = 0;
+ // Disable Main Oscillator
+ AT91C_BASE_PMC->PMC_MOR = 0;
+
+ PMC_DisableProcessorClock();
+}
+//------------------------------------------------------------------------------
+/// Return the CPU to normal speed 48MHz, enable PLL, main oscillator
+//------------------------------------------------------------------------------
+void NormalPowerMode(void)
+{
+ // MCK=32kHz to MCK=48MHz
+ // enable Main Oscillator
+ AT91C_BASE_PMC->PMC_MOR = (( (AT91C_CKGR_OSCOUNT & (0x06 <<8)) | AT91C_CKGR_MOSCEN ));
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MOSCS ) );
+
+ // enable PLL@96MHz
+ AT91C_BASE_PMC->PMC_PLLR = ((AT91C_CKGR_DIV & 0x0E) |
+ (AT91C_CKGR_PLLCOUNT & (28<<8)) |
+ (AT91C_CKGR_MUL & (0x48<<16)));
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_LOCK ) );
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY ) );
+ AT91C_BASE_CKGR->CKGR_PLLR |= AT91C_CKGR_USBDIV_1 ;
+ // MCK=SLCK/2 : change prescaler first
+ AT91C_BASE_PMC->PMC_MCKR = AT91C_PMC_PRES_CLK_2;
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY ) );
+ // MCK=PLLCK/2 : then change source
+ AT91C_BASE_PMC->PMC_MCKR |= AT91C_PMC_CSS_PLL_CLK ;
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY ) );
+}
+
+#elif defined (at91sam7se)
+//------------------------------------------------------------------------------
+/// Put the CPU in 32kHz, disable PLL, main oscillator
+/// Put voltage regulator in standby mode
+//------------------------------------------------------------------------------
+void LowPowerMode(void)
+{
+ // MCK=48MHz to MCK=32kHz
+ // MCK = SLCK/2 : change source first from 48 000 000 to 18. / 2 = 9M
+ AT91C_BASE_PMC->PMC_MCKR = AT91C_PMC_PRES_CLK_2;
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY ) );
+ // MCK=SLCK : then change prescaler
+ AT91C_BASE_PMC->PMC_MCKR = AT91C_PMC_CSS_SLOW_CLK;
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY ) );
+ // disable PLL
+ AT91C_BASE_PMC->PMC_PLLR = 0;
+ // Disable Main Oscillator
+ AT91C_BASE_PMC->PMC_MOR = 0;
+
+ // Voltage regulator in standby mode : Enable VREG Low Power Mode
+ AT91C_BASE_VREG->VREG_MR |= AT91C_VREG_PSTDBY;
+
+ PMC_DisableProcessorClock();
+}
+//------------------------------------------------------------------------------
+/// Put voltage regulator in normal mode
+/// Return the CPU to normal speed 48MHz, enable PLL, main oscillator
+//------------------------------------------------------------------------------
+void NormalPowerMode(void)
+{
+ // Voltage regulator in normal mode : Disable VREG Low Power Mode
+ AT91C_BASE_VREG->VREG_MR &= ~AT91C_VREG_PSTDBY;
+
+ // MCK=32kHz to MCK=48MHz
+ // enable Main Oscillator
+ AT91C_BASE_PMC->PMC_MOR = (( (AT91C_CKGR_OSCOUNT & (0x06 <<8)) | AT91C_CKGR_MOSCEN ));
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MOSCS ) );
+
+ // enable PLL@96MHz
+ AT91C_BASE_PMC->PMC_PLLR = ((AT91C_CKGR_DIV & 0x0E) |
+ (AT91C_CKGR_PLLCOUNT & (28<<8)) |
+ (AT91C_CKGR_MUL & (0x48<<16)));
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_LOCK ) );
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY ) );
+ AT91C_BASE_CKGR->CKGR_PLLR |= AT91C_CKGR_USBDIV_1 ;
+ // MCK=SLCK/2 : change prescaler first
+ AT91C_BASE_PMC->PMC_MCKR = AT91C_PMC_PRES_CLK_2;
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY ) );
+ // MCK=PLLCK/2 : then change source
+ AT91C_BASE_PMC->PMC_MCKR |= AT91C_PMC_CSS_PLL_CLK ;
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY ) );
+}
+
+#elif defined (at91sam7s)
+//------------------------------------------------------------------------------
+/// Put the CPU in 32kHz, disable PLL, main oscillator
+/// Put voltage regulator in standby mode
+//------------------------------------------------------------------------------
+void LowPowerMode(void)
+{
+ // MCK=48MHz to MCK=32kHz
+ // MCK = SLCK/2 : change source first from 48 000 000 to 18. / 2 = 9M
+ AT91C_BASE_PMC->PMC_MCKR = AT91C_PMC_PRES_CLK_2;
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY ) );
+ // MCK=SLCK : then change prescaler
+ AT91C_BASE_PMC->PMC_MCKR = AT91C_PMC_CSS_SLOW_CLK;
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY ) );
+ // disable PLL
+ AT91C_BASE_PMC->PMC_PLLR = 0;
+ // Disable Main Oscillator
+ AT91C_BASE_PMC->PMC_MOR = 0;
+
+ // Voltage regulator in standby mode : Enable VREG Low Power Mode
+ AT91C_BASE_VREG->VREG_MR |= AT91C_VREG_PSTDBY;
+
+ PMC_DisableProcessorClock();
+}
+
+//------------------------------------------------------------------------------
+/// Put voltage regulator in normal mode
+/// Return the CPU to normal speed 48MHz, enable PLL, main oscillator
+//------------------------------------------------------------------------------
+void NormalPowerMode(void)
+{
+ // Voltage regulator in normal mode : Disable VREG Low Power Mode
+ AT91C_BASE_VREG->VREG_MR &= ~AT91C_VREG_PSTDBY;
+
+ // MCK=32kHz to MCK=48MHz
+ // enable Main Oscillator
+ AT91C_BASE_PMC->PMC_MOR = (( (AT91C_CKGR_OSCOUNT & (0x06 <<8)) | AT91C_CKGR_MOSCEN ));
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MOSCS ) );
+
+ // enable PLL@96MHz
+ AT91C_BASE_PMC->PMC_PLLR = ((AT91C_CKGR_DIV & 0x0E) |
+ (AT91C_CKGR_PLLCOUNT & (28<<8)) |
+ (AT91C_CKGR_MUL & (0x48<<16)));
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_LOCK ) );
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY ) );
+ AT91C_BASE_CKGR->CKGR_PLLR |= AT91C_CKGR_USBDIV_1 ;
+ // MCK=SLCK/2 : change prescaler first
+ AT91C_BASE_PMC->PMC_MCKR = AT91C_PMC_PRES_CLK_2;
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY ) );
+ // MCK=PLLCK/2 : then change source
+ AT91C_BASE_PMC->PMC_MCKR |= AT91C_PMC_CSS_PLL_CLK ;
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY ) );
+
+}
+
+#elif defined (at91sam7x) || defined (at91sam7xc)
+//------------------------------------------------------------------------------
+/// Put the CPU in 32kHz, disable PLL, main oscillator
+/// Put voltage regulator in standby mode
+//------------------------------------------------------------------------------
+void LowPowerMode(void)
+{
+ // MCK=48MHz to MCK=32kHz
+ // MCK = SLCK/2 : change source first from 48 000 000 to 18. / 2 = 9M
+ AT91C_BASE_PMC->PMC_MCKR = AT91C_PMC_PRES_CLK_2;
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY ) );
+ // MCK=SLCK : then change prescaler
+ AT91C_BASE_PMC->PMC_MCKR = AT91C_PMC_CSS_SLOW_CLK;
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY ) );
+ // disable PLL
+ AT91C_BASE_PMC->PMC_PLLR = 0;
+ // Disable Main Oscillator
+ AT91C_BASE_PMC->PMC_MOR = 0;
+
+ // Voltage regulator in standby mode : Enable VREG Low Power Mode
+ AT91C_BASE_VREG->VREG_MR |= AT91C_VREG_PSTDBY;
+
+ PMC_DisableProcessorClock();
+}
+
+//------------------------------------------------------------------------------
+/// Put voltage regulator in normal mode
+/// Return the CPU to normal speed 48MHz, enable PLL, main oscillator
+//------------------------------------------------------------------------------
+void NormalPowerMode(void)
+{
+ // Voltage regulator in normal mode : Disable VREG Low Power Mode
+ AT91C_BASE_VREG->VREG_MR &= ~AT91C_VREG_PSTDBY;
+
+ // MCK=32kHz to MCK=48MHz
+ // enable Main Oscillator
+ AT91C_BASE_PMC->PMC_MOR = (( (AT91C_CKGR_OSCOUNT & (0x06 <<8)) | AT91C_CKGR_MOSCEN ));
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MOSCS ) );
+
+ // enable PLL@96MHz
+ AT91C_BASE_PMC->PMC_PLLR = ((AT91C_CKGR_DIV & 0x0E) |
+ (AT91C_CKGR_PLLCOUNT & (28<<8)) |
+ (AT91C_CKGR_MUL & (0x48<<16)));
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_LOCK ) );
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY ) );
+ AT91C_BASE_CKGR->CKGR_PLLR |= AT91C_CKGR_USBDIV_1 ;
+ // MCK=SLCK/2 : change prescaler first
+ AT91C_BASE_PMC->PMC_MCKR = AT91C_PMC_PRES_CLK_2;
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY ) );
+ // MCK=PLLCK/2 : then change source
+ AT91C_BASE_PMC->PMC_MCKR |= AT91C_PMC_CSS_PLL_CLK ;
+ while( !( AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY ) );
+}
+
+#endif
+
+//------------------------------------------------------------------------------
+// Internal functions
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+/// Handles interrupts coming from Timer #0.
+//------------------------------------------------------------------------------
+static void ISR_Timer0()
+{
+ unsigned char size;
+ unsigned int status = AT91C_BASE_TC0->TC_SR;
+
+ if ((status & AT91C_TC_CPCS) != 0) {
+
+ // Flush PDC buffer
+ size = DATABUFFERSIZE - AT91C_BASE_US0->US_RCR;
+ if (size == 0) {
+
+ AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG;
+ return;
+ }
+ AT91C_BASE_US0->US_RCR = 0;
+
+ // Send current buffer through the USB
+ while (CDCDSerialDriver_Write(usartBuffers[usartCurrentBuffer],
+ size, 0, 0) != USBD_STATUS_SUCCESS);
+
+ // Restart read on buffer
+ USART_ReadBuffer(AT91C_BASE_US0,
+ usartBuffers[usartCurrentBuffer],
+ DATABUFFERSIZE);
+ usartCurrentBuffer = 1 - usartCurrentBuffer;
+ AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG;
+ }
+}
+
+
+//------------------------------------------------------------------------------
+// Callbacks re-implementation
+//------------------------------------------------------------------------------
+//------------------------------------------------------------------------------
+/// Invoked when the USB device leaves the Suspended state. By default,
+/// configures the LEDs.
+//------------------------------------------------------------------------------
+void USBDCallbacks_Resumed(void)
+{
+ // Initialize LEDs
+ LED_Configure(USBD_LEDPOWER);
+ LED_Set(USBD_LEDPOWER);
+ LED_Configure(USBD_LEDUSB);
+ LED_Clear(USBD_LEDUSB);
+ USBState = STATE_RESUME;
+}
+
+//------------------------------------------------------------------------------
+/// Invoked when the USB device gets suspended. By default, turns off all LEDs.
+//------------------------------------------------------------------------------
+void USBDCallbacks_Suspended(void)
+{
+ // Turn off LEDs
+ LED_Clear(USBD_LEDPOWER);
+ LED_Clear(USBD_LEDUSB);
+ USBState = STATE_SUSPEND;
+}
+
+
+//------------------------------------------------------------------------------
+/// Callback invoked when data has been received on the USB.
+//------------------------------------------------------------------------------
+static void UsbDataReceived(unsigned int unused,
+ unsigned char status,
+ unsigned int received,
+ unsigned int remaining)
+{
+ // Check that data has been received successfully
+ if (status == USBD_STATUS_SUCCESS) {
+
+ // Send data through USART
+ while (!USART_WriteBuffer(AT91C_BASE_US0, usbBuffer, received));
+ AT91C_BASE_US0->US_IER = AT91C_US_TXBUFE;
+
+ // Check if bytes have been discarded
+ if ((received == DATABUFFERSIZE) && (remaining > 0)) {
+
+ TRACE_WARNING(
+ "UsbDataReceived: %u bytes discarded\n\r",
+ remaining);
+ }
+ }
+ else {
+
+ TRACE_WARNING( "UsbDataReceived: Transfer error\n\r");
+ }
+}
+
+//------------------------------------------------------------------------------
+/// Handles interrupts coming from USART #0.
+//------------------------------------------------------------------------------
+static void ISR_Usart0()
+{
+ unsigned int status = AT91C_BASE_US0->US_CSR;
+ unsigned short serialState;
+
+ // If USB device is not configured, do nothing
+ if (USBD_GetState() != USBD_STATE_CONFIGURED) {
+
+ AT91C_BASE_US0->US_IDR = 0xFFFFFFFF;
+ return;
+ }
+
+ // Buffer has been read successfully
+ if ((status & AT91C_US_ENDRX) != 0) {
+
+ // Disable timer
+ AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKDIS;
+
+ // Send buffer through the USB
+ while (CDCDSerialDriver_Write(usartBuffers[usartCurrentBuffer],
+ DATABUFFERSIZE, 0, 0) != USBD_STATUS_SUCCESS);
+
+ // Restart read on buffer
+ USART_ReadBuffer(AT91C_BASE_US0,
+ usartBuffers[usartCurrentBuffer],
+ DATABUFFERSIZE);
+ usartCurrentBuffer = 1 - usartCurrentBuffer;
+
+ // Restart timer
+ AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG;
+ }
+
+ // Buffer has been sent
+ if ((status & AT91C_US_TXBUFE) != 0) {
+
+ // Restart USB read
+ CDCDSerialDriver_Read(usbBuffer,
+ DATABUFFERSIZE,
+ (TransferCallback) UsbDataReceived,
+ 0);
+ AT91C_BASE_US0->US_IDR = AT91C_US_TXBUFE;
+ }
+
+ // Errors
+ serialState = CDCDSerialDriver_GetSerialState();
+
+ // Overrun
+ if ((status & AT91C_US_OVER) != 0) {
+
+ TRACE_WARNING( "ISR_Usart0: Overrun\n\r");
+ serialState |= CDCDSerialDriver_STATE_OVERRUN;
+ }
+
+ // Framing error
+ if ((status & AT91C_US_FRAME) != 0) {
+
+ TRACE_WARNING( "ISR_Usart0: Framing error\n\r");
+ serialState |= CDCDSerialDriver_STATE_FRAMING;
+ }
+
+ CDCDSerialDriver_SetSerialState(serialState);
+}
+
+//------------------------------------------------------------------------------
+// Main
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+/// Initializes drivers and start the USB <-> Serial bridge.
+//------------------------------------------------------------------------------
+int main()
+{
+ TRACE_CONFIGURE(DBGU_STANDARD, 115200, BOARD_MCK);
+ printf("-- USB Device CDC Serial Project %s --\n\r", SOFTPACK_VERSION);
+ printf("-- %s\n\r", BOARD_NAME);
+ printf("-- Compiled: %s %s --\n\r", __DATE__, __TIME__);
+
+ // If they are present, configure Vbus & Wake-up pins
+ PIO_InitializeInterrupts(0);
+
+ // Configure USART
+ PIO_Configure(pins, PIO_LISTSIZE(pins));
+ AT91C_BASE_PMC->PMC_PCER = 1 << AT91C_ID_US0;
+ AT91C_BASE_US0->US_IDR = 0xFFFFFFFF;
+ USART_Configure(AT91C_BASE_US0,
+ USART_MODE_ASYNCHRONOUS,
+ 115200,
+ BOARD_MCK);
+ USART_SetTransmitterEnabled(AT91C_BASE_US0, 1);
+ USART_SetReceiverEnabled(AT91C_BASE_US0, 1);
+ AIC_ConfigureIT(AT91C_ID_US0, 0, ISR_Usart0);
+ AIC_EnableIT(AT91C_ID_US0);
+
+ // Configure timer 0
+ AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_TC0);
+ AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKDIS;
+ AT91C_BASE_TC0->TC_IDR = 0xFFFFFFFF;
+ AT91C_BASE_TC0->TC_CMR = AT91C_TC_CLKS_TIMER_DIV5_CLOCK
+ | AT91C_TC_CPCSTOP
+ | AT91C_TC_CPCDIS
+ | AT91C_TC_WAVESEL_UP_AUTO
+ | AT91C_TC_WAVE;
+ AT91C_BASE_TC0->TC_RC = 0x00FF;
+ AT91C_BASE_TC0->TC_IER = AT91C_TC_CPCS;
+ AIC_ConfigureIT(AT91C_ID_TC0, 0, ISR_Timer0);
+ AIC_EnableIT(AT91C_ID_TC0);
+
+ // BOT driver initialization
+ CDCDSerialDriver_Initialize();
+
+ // connect if needed
+ VBUS_CONFIGURE();
+
+ // Driver loop
+ while (1) {
+
+ // Device is not configured
+ if (USBD_GetState() < USBD_STATE_CONFIGURED) {
+
+ // Connect pull-up, wait for configuration
+ USBD_Connect();
+ while (USBD_GetState() < USBD_STATE_CONFIGURED);
+
+ // Start receiving data on the USART
+ usartCurrentBuffer = 0;
+ USART_ReadBuffer(AT91C_BASE_US0, usartBuffers[0], DATABUFFERSIZE);
+ USART_ReadBuffer(AT91C_BASE_US0, usartBuffers[1], DATABUFFERSIZE);
+ AT91C_BASE_US0->US_IER = AT91C_US_ENDRX
+ | AT91C_US_FRAME
+ | AT91C_US_OVER;
+ AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG;
+
+ // Start receiving data on the USB
+ CDCDSerialDriver_Read(usbBuffer,
+ DATABUFFERSIZE,
+ (TransferCallback) UsbDataReceived,
+ 0);
+ }
+ if( USBState == STATE_SUSPEND ) {
+ TRACE_DEBUG("suspend !\n\r");
+ LowPowerMode();
+ USBState = STATE_IDLE;
+ }
+ if( USBState == STATE_RESUME ) {
+ // Return in normal MODE
+ TRACE_DEBUG("resume !\n\r");
+ NormalPowerMode();
+ USBState = STATE_IDLE;
+ }
+ }
+}
+
diff --git a/usb-device-cdc-serial-project/obj/.empty b/usb-device-cdc-serial-project/obj/.empty new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/usb-device-cdc-serial-project/obj/.empty |