From db0ddc6ee6c5e9d3dec919465dcb1c068123922d Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Sun, 31 Jul 2011 22:36:10 +0200 Subject: at91lib: Add USB MULTI driver (for device with 3 configurations) This is in anticipation of the future SIMtrace firmware, where we will have a single device with three configurations. --- usb-device-multi-project/Makefile | 173 ++++++++++++++++ usb-device-multi-project/main.c | 406 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 579 insertions(+) create mode 100644 usb-device-multi-project/Makefile create mode 100644 usb-device-multi-project/main.c (limited to 'usb-device-multi-project') diff --git a/usb-device-multi-project/Makefile b/usb-device-multi-project/Makefile new file mode 100644 index 0000000..797b520 --- /dev/null +++ b/usb-device-multi-project/Makefile @@ -0,0 +1,173 @@ +# ---------------------------------------------------------------------------- +# 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 COMPOSITE project + +#------------------------------------------------------------------------------- +# User-modifiable options +#------------------------------------------------------------------------------- + +# Chip & board used for compilation +# (can be overriden by adding CHIP=chip and BOARD=board to the command-line) +CHIP = at91sam7s128 +BOARD = simtrace + +# 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 = 5 + +# Optimization level, put in comment for debugging +OPTIMIZATION = -Os + +# AT91 library directory +AT91LIB = ../at91lib + +# Output file basename +OUTPUT = usb-device-multi-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-elf- + +# 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 += -Dusb_CDCHID +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 +COMP = $(AT91LIB)/components +MEM = $(AT91LIB)/memories + +VPATH += $(MEM) +VPATH += $(USB)/device/hid-keyboard $(USB)/common/hid +VPATH += $(USB)/device/multiconf $(USB)/device/composite +VPATH += $(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 $(PERIPH)/pit +VPATH += $(BOARDS)/$(BOARD) $(BOARDS)/$(BOARD)/$(CHIP) + +# Objects built from C source files +C_OBJECTS = main.o +C_OBJECTS += MULTIDriver.o MULTIDriverDescriptors.o +C_OBJECTS += CDCSetControlLineStateRequest.o CDCLineCoding.o +C_OBJECTS += CDCDFunctionDriver.o +#C_OBJECTS += HIDIdleRequest.o HIDReportRequest.o HIDKeypad.o +#C_OBJECTS += HIDDKeyboardInputReport.o HIDDKeyboardOutputReport.o +#C_OBJECTS += HIDDFunctionDriver.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 pit.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-multi-project/main.c b/usb-device-multi-project/main.c new file mode 100644 index 0000000..b211770 --- /dev/null +++ b/usb-device-multi-project/main.c @@ -0,0 +1,406 @@ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include + +//----------------------------------------------------------------------------- +// Definitions +//----------------------------------------------------------------------------- +#ifndef AT91C_ID_TC0 +#if defined(AT91C_ID_TC012) + #define AT91C_ID_TC0 AT91C_ID_TC012 +#elif defined(AT91C_ID_TC) + #define AT91C_ID_TC0 AT91C_ID_TC +#else + #error Pb define ID_TC +#endif +#endif + +/// Master clock frequency in Hz +#define MCK BOARD_MCK + +/// Number of keys used in the example. +#define NUM_KEYS 4 + +/// Number of non-modifiers keys. +#define NUM_NORMAL_KEYS 3 + +/// Number of modifier keys. +#define NUM_MODIFIER_KEYS (NUM_KEYS - NUM_NORMAL_KEYS) + +/// Num lock LED index. +#define LED_NUMLOCK USBD_LEDOTHER + +/// Delay for pushbutton debouncing (ms) +#define DEBOUNCE_TIME 10 + +/// PIT period value (useconds) +#define PIT_PERIOD 1000 + +/// Size in bytes of the buffer used for reading data from the USB & USART +#define DATABUFFERSIZE BOARD_USB_ENDPOINTS_MAXPACKETSIZE(2) + +/// 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; + +//- CDC +/// List of pins that must be configured for use by the application. +static const Pin pinsUsart[] = {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 usbSerialBuffer0[DATABUFFERSIZE]; +//static unsigned char usbSerialBuffer1[DATABUFFERSIZE]; + +#define WAKEUP_CONFIGURE() +#define VBUS_CONFIGURE() USBD_Connect() + +//------------------------------------------------------------------------------ +/// 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 ) ); + +} + +//------------------------------------------------------------------------------ +// 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; +} + + + +//----------------------------------------------------------------------------- +// 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(0, 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; + } +} + +//----------------------------------------------------------------------------- +/// Callback invoked when data has been received on the USB. +//----------------------------------------------------------------------------- +static void UsbDataReceived0(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, usbSerialBuffer0, 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 USBSerial0 + while (CDCDSerialDriver_Write(0, 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(0, usbSerialBuffer0, + DATABUFFERSIZE, + (TransferCallback) UsbDataReceived0, + 0); + AT91C_BASE_US0->US_IDR = AT91C_US_TXBUFE; + } + + // Errors + serialState = CDCDSerialDriver_GetSerialState(0); + + // Overrun + if ((status & AT91C_US_OVER) != 0) { + + TRACE_WARNING("ISR_Usart0: Overrun\n\r"); + serialState |= CDCD_STATE_OVERRUN; + } + + // Framing error + if ((status & AT91C_US_FRAME) != 0) { + + TRACE_WARNING("ISR_Usart0: Framing error\n\r"); + serialState |= CDCD_STATE_FRAMING; + } + + CDCDSerialDriver_SetSerialState(0, serialState); +} + +//----------------------------------------------------------------------------- +// Main +//----------------------------------------------------------------------------- + +//----------------------------------------------------------------------------- +/// Initializes drivers and start the USB composite device. +//----------------------------------------------------------------------------- +int main() +{ + TRACE_CONFIGURE(DBGU_STANDARD, 115200, BOARD_MCK); + printf("-- USB Multi Device 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); +#if 0 + // ----- HID Function Initialize + // Initialize key statuses and configure push buttons + PIO_Configure(pinsPushButtons, PIO_LISTSIZE(pinsPushButtons)); + memset(keyStatus, 1, NUM_KEYS); + + // Configure LEDs + LED_Configure(LED_NUMLOCK); + + // ----- CDC Function Initialize + // Configure USART + PIO_Configure(pinsUsart, PIO_LISTSIZE(pinsUsart)); + AT91C_BASE_PMC->PMC_PCER = 1 << AT91C_ID_US0; + AT91C_BASE_US0->US_IDR = 0xFFFFFFFF; + USART_Configure(AT91C_BASE_US0, + USART_MODE_ASYNCHRONOUS, + 115200, + 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); +#endif + + // USB COMPOSITE driver initialization + MULTIDriver_Initialize(); + + WAKEUP_CONFIGURE(); + + // 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); + +#if 0 + // 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(0, usbSerialBuffer0, + DATABUFFERSIZE, + (TransferCallback) UsbDataReceived0, + 0); + } + else { + + HIDDKeyboardProcessKeys(); +#endif + } + + 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; + } + } +} + -- cgit v1.2.3