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Copyright (c) 2012 Texas Instruments Incorporated. All rights reserved.
Copyright (c) 2013 jaseg <github@jaseg.net>. All rights reserved.
Software License Agreement
Texas Instruments (TI) is supplying this software for use solely and
exclusively on TI's microcontroller products. The software is owned by
TI and/or its suppliers, and is protected under applicable copyright
laws. You may not combine this software with "viral" open-source
software in order to form a larger program.
THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES, FOR ANY REASON WHATSOEVER.
This was part of revision 9453 of the EK-LM4F120XL Firmware Package.

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#******************************************************************************
#
# Makefile - Rules for building the USB device bulk example.
#
# Copyright (c) 2012 Texas Instruments Incorporated. All rights reserved.
# Software License Agreement
#
# Texas Instruments (TI) is supplying this software for use solely and
# exclusively on TI's microcontroller products. The software is owned by
# TI and/or its suppliers, and is protected under applicable copyright
# laws. You may not combine this software with "viral" open-source
# software in order to form a larger program.
#
# THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
# NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
# NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
# CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
# DAMAGES, FOR ANY REASON WHATSOEVER.
#
# This is part of revision 9453 of the EK-LM4F120XL Firmware Package.
#
#******************************************************************************
#
# Defines the part type that this project uses.
#
PART=LM4F120H5QR
#
# Set the processor variant.
#
VARIANT=cm4f
#
# The base directory for StellarisWare.
#
ROOT=../stellaris
#
# Include the common make definitions.
#
include ${ROOT}/makedefs
#
# Where to find source files that do not live in this directory.
#
VPATH=
VPATH+=../stellaris/utils
#
# Where to find header files that do not live in the source directory.
#
IPATH=../stellaris
#
# The default rule, which causes the USB device bulk example to be built.
#
all: ${COMPILER}
all: ${COMPILER}/main.axf
#
# The rule to clean out all the build products.
#
clean:
@rm -rf ${COMPILER} ${wildcard *~}
#
# The rule to create the target directory.
#
${COMPILER}:
@mkdir -p ${COMPILER}
#
# Rules for building the USB device bulk example.
#
${COMPILER}/main.axf: ${COMPILER}/startup_${COMPILER}.o
${COMPILER}/main.axf: ${COMPILER}/uartstdio.o
${COMPILER}/main.axf: ${COMPILER}/usb_bulk_structs.o
${COMPILER}/main.axf: ${COMPILER}/main.o
${COMPILER}/main.axf: ${COMPILER}/ustdlib.o
${COMPILER}/main.axf: ${ROOT}/usblib/${COMPILER}-cm4f/libusb-cm4f.a
${COMPILER}/main.axf: ${ROOT}/driverlib/${COMPILER}-cm4f/libdriver-cm4f.a
${COMPILER}/main.axf: usb_dev_bulk.ld
SCATTERgcc_main=usb_dev_bulk.ld
ENTRY_main=ResetISR
CFLAGSgcc=-DTARGET_IS_BLIZZARD_RA1 -DUART_BUFFERED
#
# Include the automatically generated dependency files.
#
ifneq (${MAKECMDGOALS},clean)
-include ${wildcard ${COMPILER}/*.d} __dummy__
endif

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/* Copyright (c) 2012 Texas Instruments Incorporated. All rights reserved.
* Software License Agreement
*
* Texas Instruments (TI) is supplying this software for use solely and
* exclusively on TI's microcontroller products. The software is owned by
* TI and/or its suppliers, and is protected under applicable copyright
* laws. You may not combine this software with "viral" open-source
* software in order to form a larger program.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
* NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
* NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
* CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
* DAMAGES, FOR ANY REASON WHATSOEVER.
*
* This is part of revision 9453 of the EK-LM4F120XL Firmware Package.
*/
#include "inc/hw_ints.h"
#include "inc/hw_memmap.h"
#include "inc/hw_types.h"
#include "inc/hw_ssi.h"
#include "driverlib/debug.h"
#include "driverlib/fpu.h"
#include "driverlib/gpio.h"
#include "driverlib/interrupt.h"
#include "driverlib/pin_map.h"
#include "driverlib/sysctl.h"
#include "driverlib/systick.h"
#include "driverlib/timer.h"
#include "driverlib/uart.h"
#include "driverlib/rom.h"
#include "driverlib/udma.h"
#include "driverlib/ssi.h"
#include "usblib/usblib.h"
#include "usblib/usb-ids.h"
#include "usblib/device/usbdevice.h"
#include "usblib/device/usbdbulk.h"
#include "utils/uartstdio.h"
#include "utils/ustdlib.h"
#include "usb_bulk_structs.h"
#define CRATE_WIDTH 5
#define CRATE_HEIGHT 4
#define CRATES_X 4
#define CRATES_Y 2
#define BUS_COUNT 4
#define BYTES_PER_PIXEL 3
#define BUS_ROWS (CRATES_Y*CRATE_HEIGHT)
#define BUS_COLUMNS (CRATES_X*CRATE_WIDTH)
#define CRATES_PER_BUS (CRATES_X*CRATES_Y)
#define CRATE_SIZE (CRATE_WIDTH*CRATE_HEIGHT)
#define BUS_SIZE (CRATES_PER_BUS*CRATE_SIZE*BYTES_PER_PIXEL)
unsigned const char const BOTTLE_MAP[CRATE_SIZE] = {
0, 1, 2, 3, 4,
19, 8, 7, 6, 5,
18, 9, 10, 11, 12,
17, 16, 15, 14, 13
};
unsigned const char const CRATE_MAP[CRATES_PER_BUS] = {
6, 4, 2, 0,
7, 5, 3, 1
};
#define SYSTICKS_PER_SECOND 100
#define SYSTICK_PERIOD_MS (1000 / SYSTICKS_PER_SECOND)
unsigned char framebuffer[BUS_COUNT*BUS_SIZE];
/* Kick off DMA from RAM to SPI interfaces */
void start_dma(void);
unsigned long framebuffer_read(void *fb, unsigned long len);
unsigned char ucControlTable[1024] __attribute__ ((aligned(1024)));
volatile unsigned long g_ulSysTickCount = 0;
#ifdef DEBUG
unsigned long g_ulUARTRxErrors = 0;
#endif
//Debug output is available via UART0 if DEBUG is defined during build.
#ifdef DEBUG
//Map all debug print calls to UARTprintf in debug builds.
#define DEBUG_PRINT UARTprintf
#else
//Compile out all debug print calls in release builds.
#define DEBUG_PRINT while(0) ((int (*)(char *, ...))0)
#endif
volatile unsigned long g_ulFlags = 0;
char *g_pcStatus;
static volatile tBoolean g_bUSBConfigured = false;
void SysTickIntHandler(void){
g_ulSysTickCount++;
}
unsigned long RxHandler(void *pvCBData, unsigned long ulEvent, unsigned long ulMsgValue, void *pvMsgData) {
switch(ulEvent) {
case USB_EVENT_CONNECTED:
g_bUSBConfigured = true;
UARTprintf("Host connected.\n");
USBBufferFlush(&g_sRxBuffer);
break;
case USB_EVENT_DISCONNECTED:
g_bUSBConfigured = false;
UARTprintf("Host disconnected.\n");
break;
case USB_EVENT_RX_AVAILABLE:
UARTprintf("Handling host data.\n\n");
return framebuffer_read(pvMsgData, ulMsgValue);
case USB_EVENT_SUSPEND:
case USB_EVENT_RESUME:
break;
default:
break;
}
return 0;
}
unsigned long framebuffer_read(void *fb, unsigned long len){
if(len != BUS_COUNT*BUS_COLUMNS*BUS_ROWS)
return 0;
for(unsigned int bus=0; bus<BUS_COUNT; bus++){
for(unsigned int x=0; x<BUS_COLUMNS; x++){
for(unsigned int y=0; x<BUS_ROWS; y++){
unsigned int crate = CRATE_MAP[x/CRATE_WIDTH + (y/CRATE_HEIGHT)*CRATES_X];
unsigned int bottle = BOTTLE_MAP[x%CRATE_WIDTH + (y%CRATE_HEIGHT)*CRATE_WIDTH];
//Copy r, g and b data
framebuffer[(bus*BUS_SIZE + crate*CRATE_SIZE + bottle)*3] =
((unsigned char *)fb)[(bus*BUS_SIZE + y*BUS_COLUMNS + x)*3];
framebuffer[(bus*BUS_SIZE + crate*CRATE_SIZE + bottle)*3 + 1] =
((unsigned char *)fb)[(bus*BUS_SIZE + y*BUS_COLUMNS + x)*3 + 1];
framebuffer[(bus*BUS_SIZE + crate*CRATE_SIZE + bottle)*3 + 2] =
((unsigned char *)fb)[(bus*BUS_SIZE + y*BUS_COLUMNS + x)*3 + 2];
}
}
}
UARTprintf("Starting DMA.\n\n");
start_dma();
return len;
}
void start_dma(void){
ROM_SSIDMAEnable(SSI0_BASE, SSI_DMA_TX);
ROM_SSIDMAEnable(SSI1_BASE, SSI_DMA_TX);
ROM_SSIDMAEnable(SSI2_BASE, SSI_DMA_TX);
ROM_SSIDMAEnable(SSI3_BASE, SSI_DMA_TX);
}
int main(void){
/* Enable lazy stacking for interrupt handlers. This allows floating-point instructions to be used within interrupt
* handlers, but at the expense of extra stack usage. */
ROM_FPULazyStackingEnable();
//Set clock to PLL at 50MHz
ROM_SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |
SYSCTL_XTAL_16MHZ);
//Configure UART0 pins
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
GPIOPinConfigure(GPIO_PA0_U0RX);
GPIOPinConfigure(GPIO_PA1_U0TX);
ROM_GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);
//Enable the GPIO pins for the LED (PF2 & PF3).
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
ROM_GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_3|GPIO_PIN_2);
UARTStdioInit(0);
UARTprintf("Booting...\n\n");
g_bUSBConfigured = false;
//Enable the GPIO peripheral used for USB, and configure the USB pins.
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
ROM_GPIOPinTypeUSBAnalog(GPIO_PORTD_BASE, GPIO_PIN_4 | GPIO_PIN_5);
//Enable the system tick.
ROM_SysTickPeriodSet(ROM_SysCtlClockGet() / SYSTICKS_PER_SECOND);
ROM_SysTickIntEnable();
ROM_SysTickEnable();
//Configure USB
USBBufferInit((tUSBBuffer *)&g_sRxBuffer);
USBStackModeSet(0, USB_MODE_FORCE_DEVICE, 0);
USBDBulkInit(0, (tUSBDBulkDevice *)&g_sBulkDevice);
//Configure SSI0..3 for the ws2801's SPI-like protocol
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI0);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI1);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI2);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI3);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
GPIOPinConfigure(GPIO_PA2_SSI0CLK);
GPIOPinConfigure(GPIO_PA5_SSI0TX);
ROM_GPIOPinTypeSSI(GPIO_PORTA_BASE, GPIO_PIN_2 | GPIO_PIN_5);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
GPIOPinConfigure(GPIO_PB4_SSI2CLK);
GPIOPinConfigure(GPIO_PB7_SSI2TX);
ROM_GPIOPinTypeSSI(GPIO_PORTB_BASE, GPIO_PIN_4 | GPIO_PIN_7);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
GPIOPinConfigure(GPIO_PD0_SSI3CLK);
GPIOPinConfigure(GPIO_PD3_SSI3TX);
ROM_GPIOPinTypeSSI(GPIO_PORTD_BASE, GPIO_PIN_0 | GPIO_PIN_3);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
GPIOPinConfigure(GPIO_PF2_SSI1CLK);
GPIOPinConfigure(GPIO_PF1_SSI1TX);
ROM_GPIOPinTypeSSI(GPIO_PORTF_BASE, GPIO_PIN_0 | GPIO_PIN_3);
SSIConfigSetExpClk(SSI0_BASE, SysCtlClockGet(), SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, 2000000, 8);
SSIConfigSetExpClk(SSI1_BASE, SysCtlClockGet(), SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, 2000000, 8);
SSIConfigSetExpClk(SSI2_BASE, SysCtlClockGet(), SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, 2000000, 8);
SSIConfigSetExpClk(SSI3_BASE, SysCtlClockGet(), SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, 2000000, 8);
//Configure the µDMA controller for use by the SPI interface
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_UDMA);
ROM_SysCtlPeripheralSleepEnable(SYSCTL_PERIPH_UDMA);
ROM_IntEnable(INT_UDMAERR); // Enable µDMA error interrupt
ROM_uDMAEnable();
ROM_uDMAControlBaseSet(ucControlTable);
//Put the µDMA attributes in a known state. These should already be disabled by default.
ROM_uDMAChannelAttributeDisable(UDMA_CH11_SSI0TX, UDMA_ATTR_ALTSELECT | UDMA_ATTR_HIGH_PRIORITY | UDMA_ATTR_REQMASK);
ROM_uDMAChannelAttributeDisable(UDMA_CH11_SSI1TX, UDMA_ATTR_ALTSELECT | UDMA_ATTR_HIGH_PRIORITY | UDMA_ATTR_REQMASK);
ROM_uDMAChannelAttributeDisable(UDMA_CH13_SSI2TX, UDMA_ATTR_ALTSELECT | UDMA_ATTR_HIGH_PRIORITY | UDMA_ATTR_REQMASK);
ROM_uDMAChannelAttributeDisable(UDMA_CH15_SSI3TX, UDMA_ATTR_ALTSELECT | UDMA_ATTR_HIGH_PRIORITY | UDMA_ATTR_REQMASK);
/* Set the USEBURST attribute for the uDMA UART TX channel. This will force the controller to always use a burst
* when transferring data from the TX buffer to the UART. This is somewhat more effecient bus usage than the
* default which allows single or burst transfers. */
ROM_uDMAChannelAttributeEnable(UDMA_CH11_SSI0TX, UDMA_ATTR_USEBURST);
ROM_uDMAChannelAttributeEnable(UDMA_CH11_SSI1TX, UDMA_ATTR_USEBURST);
ROM_uDMAChannelAttributeEnable(UDMA_CH13_SSI2TX, UDMA_ATTR_USEBURST);
ROM_uDMAChannelAttributeEnable(UDMA_CH15_SSI3TX, UDMA_ATTR_USEBURST);
/* Configure the SSI Tx µDMA Channel to transfer from RAM to TX FIFO. The arbitration size is set to 4, which
* matches the SSI TX FIFO µDMA trigger threshold. */
ROM_uDMAChannelControlSet(UDMA_CH11_SSI0TX, UDMA_SIZE_8 | UDMA_SRC_INC_8 | UDMA_DST_INC_NONE | UDMA_ARB_4);
ROM_uDMAChannelTransferSet(UDMA_CH11_SSI0TX | UDMA_PRI_SELECT, UDMA_MODE_BASIC, framebuffer, (void *)(SSI0_BASE + SSI_O_DR), BUS_SIZE);
ROM_uDMAChannelEnable(UDMA_CH11_SSI0TX);
ROM_uDMAChannelControlSet(UDMA_CH11_SSI1TX, UDMA_SIZE_8 | UDMA_SRC_INC_8 | UDMA_DST_INC_NONE | UDMA_ARB_4);
ROM_uDMAChannelTransferSet(UDMA_CH11_SSI1TX | UDMA_PRI_SELECT, UDMA_MODE_BASIC, framebuffer+BUS_SIZE, (void *)(SSI0_BASE + SSI_O_DR), BUS_SIZE);
ROM_uDMAChannelEnable(UDMA_CH11_SSI1TX);
ROM_uDMAChannelControlSet(UDMA_CH13_SSI2TX, UDMA_SIZE_8 | UDMA_SRC_INC_8 | UDMA_DST_INC_NONE | UDMA_ARB_4);
ROM_uDMAChannelTransferSet(UDMA_CH13_SSI2TX | UDMA_PRI_SELECT, UDMA_MODE_BASIC, framebuffer+BUS_SIZE*2, (void *)(SSI0_BASE + SSI_O_DR), BUS_SIZE);
ROM_uDMAChannelEnable(UDMA_CH13_SSI2TX);
ROM_uDMAChannelControlSet(UDMA_CH15_SSI3TX, UDMA_SIZE_8 | UDMA_SRC_INC_8 | UDMA_DST_INC_NONE | UDMA_ARB_4);
ROM_uDMAChannelTransferSet(UDMA_CH15_SSI3TX | UDMA_PRI_SELECT, UDMA_MODE_BASIC, framebuffer+BUS_SIZE*3, (void *)(SSI0_BASE + SSI_O_DR), BUS_SIZE);
ROM_uDMAChannelEnable(UDMA_CH15_SSI3TX);
//Enable the SSIs after configuring anything around them.
SSIEnable(SSI0_BASE);
SSIEnable(SSI1_BASE);
SSIEnable(SSI2_BASE);
SSIEnable(SSI3_BASE);
UARTprintf("Booted.\n");
while(1){
}
}

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//*****************************************************************************
//
// startup_gcc.c - Startup code for use with GNU tools.
//
// Copyright (c) 2012 Texas Instruments Incorporated. All rights reserved.
// Software License Agreement
//
// Texas Instruments (TI) is supplying this software for use solely and
// exclusively on TI's microcontroller products. The software is owned by
// TI and/or its suppliers, and is protected under applicable copyright
// laws. You may not combine this software with "viral" open-source
// software in order to form a larger program.
//
// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
// DAMAGES, FOR ANY REASON WHATSOEVER.
//
// This is part of revision 9453 of the EK-LM4F120XL Firmware Package.
//
//*****************************************************************************
#include "inc/hw_nvic.h"
#include "inc/hw_types.h"
//*****************************************************************************
//
// Forward declaration of the default fault handlers.
//
//*****************************************************************************
void ResetISR(void);
static void NmiSR(void);
static void FaultISR(void);
static void IntDefaultHandler(void);
//*****************************************************************************
//
// External declarations for the interrupt handlers used by the application.
//
//*****************************************************************************
extern void SysTickIntHandler(void);
extern void UARTStdioIntHandler(void);
extern void USB0DeviceIntHandler(void);
//*****************************************************************************
//
// The entry point for the application.
//
//*****************************************************************************
extern int main(void);
//*****************************************************************************
//
// Reserve space for the system stack.
//
//*****************************************************************************
static unsigned long pulStack[256];
//*****************************************************************************
//
// The vector table. Note that the proper constructs must be placed on this to
// ensure that it ends up at physical address 0x0000.0000.
//
//*****************************************************************************
__attribute__ ((section(".isr_vector")))
void (* const g_pfnVectors[])(void) =
{
(void (*)(void))((unsigned long)pulStack + sizeof(pulStack)),
// The initial stack pointer
ResetISR, // The reset handler
NmiSR, // The NMI handler
FaultISR, // The hard fault handler
IntDefaultHandler, // The MPU fault handler
IntDefaultHandler, // The bus fault handler
IntDefaultHandler, // The usage fault handler
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
IntDefaultHandler, // SVCall handler
IntDefaultHandler, // Debug monitor handler
0, // Reserved
IntDefaultHandler, // The PendSV handler
SysTickIntHandler, // The SysTick handler
IntDefaultHandler, // GPIO Port A
IntDefaultHandler, // GPIO Port B
IntDefaultHandler, // GPIO Port C
IntDefaultHandler, // GPIO Port D
IntDefaultHandler, // GPIO Port E
UARTStdioIntHandler, // UART0 Rx and Tx
IntDefaultHandler, // UART1 Rx and Tx
IntDefaultHandler, // SSI0 Rx and Tx
IntDefaultHandler, // I2C0 Master and Slave
IntDefaultHandler, // PWM Fault
IntDefaultHandler, // PWM Generator 0
IntDefaultHandler, // PWM Generator 1
IntDefaultHandler, // PWM Generator 2
IntDefaultHandler, // Quadrature Encoder 0
IntDefaultHandler, // ADC Sequence 0
IntDefaultHandler, // ADC Sequence 1
IntDefaultHandler, // ADC Sequence 2
IntDefaultHandler, // ADC Sequence 3
IntDefaultHandler, // Watchdog timer
IntDefaultHandler, // Timer 0 subtimer A
IntDefaultHandler, // Timer 0 subtimer B
IntDefaultHandler, // Timer 1 subtimer A
IntDefaultHandler, // Timer 1 subtimer B
IntDefaultHandler, // Timer 2 subtimer A
IntDefaultHandler, // Timer 2 subtimer B
IntDefaultHandler, // Analog Comparator 0
IntDefaultHandler, // Analog Comparator 1
IntDefaultHandler, // Analog Comparator 2
IntDefaultHandler, // System Control (PLL, OSC, BO)
IntDefaultHandler, // FLASH Control
IntDefaultHandler, // GPIO Port F
IntDefaultHandler, // GPIO Port G
IntDefaultHandler, // GPIO Port H
IntDefaultHandler, // UART2 Rx and Tx
IntDefaultHandler, // SSI1 Rx and Tx
IntDefaultHandler, // Timer 3 subtimer A
IntDefaultHandler, // Timer 3 subtimer B
IntDefaultHandler, // I2C1 Master and Slave
IntDefaultHandler, // Quadrature Encoder 1
IntDefaultHandler, // CAN0
IntDefaultHandler, // CAN1
IntDefaultHandler, // CAN2
IntDefaultHandler, // Ethernet
IntDefaultHandler, // Hibernate
USB0DeviceIntHandler, // USB0
IntDefaultHandler, // PWM Generator 3
IntDefaultHandler, // uDMA Software Transfer
IntDefaultHandler, // uDMA Error
IntDefaultHandler, // ADC1 Sequence 0
IntDefaultHandler, // ADC1 Sequence 1
IntDefaultHandler, // ADC1 Sequence 2
IntDefaultHandler, // ADC1 Sequence 3
IntDefaultHandler, // I2S0
IntDefaultHandler, // External Bus Interface 0
IntDefaultHandler, // GPIO Port J
IntDefaultHandler, // GPIO Port K
IntDefaultHandler, // GPIO Port L
IntDefaultHandler, // SSI2 Rx and Tx
IntDefaultHandler, // SSI3 Rx and Tx
IntDefaultHandler, // UART3 Rx and Tx
IntDefaultHandler, // UART4 Rx and Tx
IntDefaultHandler, // UART5 Rx and Tx
IntDefaultHandler, // UART6 Rx and Tx
IntDefaultHandler, // UART7 Rx and Tx
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
IntDefaultHandler, // I2C2 Master and Slave
IntDefaultHandler, // I2C3 Master and Slave
IntDefaultHandler, // Timer 4 subtimer A
IntDefaultHandler, // Timer 4 subtimer B
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
IntDefaultHandler, // Timer 5 subtimer A
IntDefaultHandler, // Timer 5 subtimer B
IntDefaultHandler, // Wide Timer 0 subtimer A
IntDefaultHandler, // Wide Timer 0 subtimer B
IntDefaultHandler, // Wide Timer 1 subtimer A
IntDefaultHandler, // Wide Timer 1 subtimer B
IntDefaultHandler, // Wide Timer 2 subtimer A
IntDefaultHandler, // Wide Timer 2 subtimer B
IntDefaultHandler, // Wide Timer 3 subtimer A
IntDefaultHandler, // Wide Timer 3 subtimer B
IntDefaultHandler, // Wide Timer 4 subtimer A
IntDefaultHandler, // Wide Timer 4 subtimer B
IntDefaultHandler, // Wide Timer 5 subtimer A
IntDefaultHandler, // Wide Timer 5 subtimer B
IntDefaultHandler, // FPU
IntDefaultHandler, // PECI 0
IntDefaultHandler, // LPC 0
IntDefaultHandler, // I2C4 Master and Slave
IntDefaultHandler, // I2C5 Master and Slave
IntDefaultHandler, // GPIO Port M
IntDefaultHandler, // GPIO Port N
IntDefaultHandler, // Quadrature Encoder 2
IntDefaultHandler, // Fan 0
0, // Reserved
IntDefaultHandler, // GPIO Port P (Summary or P0)
IntDefaultHandler, // GPIO Port P1
IntDefaultHandler, // GPIO Port P2
IntDefaultHandler, // GPIO Port P3
IntDefaultHandler, // GPIO Port P4
IntDefaultHandler, // GPIO Port P5
IntDefaultHandler, // GPIO Port P6
IntDefaultHandler, // GPIO Port P7
IntDefaultHandler, // GPIO Port Q (Summary or Q0)
IntDefaultHandler, // GPIO Port Q1
IntDefaultHandler, // GPIO Port Q2
IntDefaultHandler, // GPIO Port Q3
IntDefaultHandler, // GPIO Port Q4
IntDefaultHandler, // GPIO Port Q5
IntDefaultHandler, // GPIO Port Q6
IntDefaultHandler, // GPIO Port Q7
IntDefaultHandler, // GPIO Port R
IntDefaultHandler, // GPIO Port S
IntDefaultHandler, // PWM 1 Generator 0
IntDefaultHandler, // PWM 1 Generator 1
IntDefaultHandler, // PWM 1 Generator 2
IntDefaultHandler, // PWM 1 Generator 3
IntDefaultHandler // PWM 1 Fault
};
//*****************************************************************************
//
// The following are constructs created by the linker, indicating where the
// the "data" and "bss" segments reside in memory. The initializers for the
// for the "data" segment resides immediately following the "text" segment.
//
//*****************************************************************************
extern unsigned long _etext;
extern unsigned long _data;
extern unsigned long _edata;
extern unsigned long _bss;
extern unsigned long _ebss;
//*****************************************************************************
//
// This is the code that gets called when the processor first starts execution
// following a reset event. Only the absolutely necessary set is performed,
// after which the application supplied entry() routine is called. Any fancy
// actions (such as making decisions based on the reset cause register, and
// resetting the bits in that register) are left solely in the hands of the
// application.
//
//*****************************************************************************
void
ResetISR(void)
{
unsigned long *pulSrc, *pulDest;
//
// Copy the data segment initializers from flash to SRAM.
//
pulSrc = &_etext;
for(pulDest = &_data; pulDest < &_edata; )
{
*pulDest++ = *pulSrc++;
}
//
// Zero fill the bss segment.
//
__asm(" ldr r0, =_bss\n"
" ldr r1, =_ebss\n"
" mov r2, #0\n"
" .thumb_func\n"
"zero_loop:\n"
" cmp r0, r1\n"
" it lt\n"
" strlt r2, [r0], #4\n"
" blt zero_loop");
//
// Enable the floating-point unit. This must be done here to handle the
// case where main() uses floating-point and the function prologue saves
// floating-point registers (which will fault if floating-point is not
// enabled). Any configuration of the floating-point unit using DriverLib
// APIs must be done here prior to the floating-point unit being enabled.
//
// Note that this does not use DriverLib since it might not be included in
// this project.
//
HWREG(NVIC_CPAC) = ((HWREG(NVIC_CPAC) &
~(NVIC_CPAC_CP10_M | NVIC_CPAC_CP11_M)) |
NVIC_CPAC_CP10_FULL | NVIC_CPAC_CP11_FULL);
//
// Call the application's entry point.
//
main();
}
//*****************************************************************************
//
// This is the code that gets called when the processor receives a NMI. This
// simply enters an infinite loop, preserving the system state for examination
// by a debugger.
//
//*****************************************************************************
static void
NmiSR(void)
{
//
// Enter an infinite loop.
//
while(1)
{
}
}
//*****************************************************************************
//
// This is the code that gets called when the processor receives a fault
// interrupt. This simply enters an infinite loop, preserving the system state
// for examination by a debugger.
//
//*****************************************************************************
static void
FaultISR(void)
{
//
// Enter an infinite loop.
//
while(1)
{
}
}
//*****************************************************************************
//
// This is the code that gets called when the processor receives an unexpected
// interrupt. This simply enters an infinite loop, preserving the system state
// for examination by a debugger.
//
//*****************************************************************************
static void
IntDefaultHandler(void)
{
//
// Go into an infinite loop.
//
while(1)
{
}
}

179
firmware/usb_bulk_structs.c Normal file
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//*****************************************************************************
//
// usb_bulk_structs.c - Data structures defining this bulk USB device.
//
// Copyright (c) 2012 Texas Instruments Incorporated. All rights reserved.
// Software License Agreement
//
// Texas Instruments (TI) is supplying this software for use solely and
// exclusively on TI's microcontroller products. The software is owned by
// TI and/or its suppliers, and is protected under applicable copyright
// laws. You may not combine this software with "viral" open-source
// software in order to form a larger program.
//
// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
// DAMAGES, FOR ANY REASON WHATSOEVER.
//
// This is part of revision 9453 of the EK-LM4F120XL Firmware Package.
//
//*****************************************************************************
#include "inc/hw_types.h"
#include "driverlib/usb.h"
#include "usblib/usblib.h"
#include "usblib/usb-ids.h"
#include "usblib/device/usbdevice.h"
#include "usblib/device/usbdbulk.h"
#include "usb_bulk_structs.h"
//*****************************************************************************
//
// The languages supported by this device.
//
//*****************************************************************************
const unsigned char g_pLangDescriptor[] =
{
4,
USB_DTYPE_STRING,
USBShort(USB_LANG_EN_US)
};
//*****************************************************************************
//
// The manufacturer string.
//
//*****************************************************************************
const unsigned char g_pManufacturerString[] =
{
(12 + 1) * 2,
USB_DTYPE_STRING,
'G', 0, 'o', 0, 'l', 0, 'd', 0, ' ', 0, '&', 0, ' ', 0, 'A', 0, 'p', 0,
'p', 0, 'l', 0, 'e', 0
};
//*****************************************************************************
//
// The product string.
//
//*****************************************************************************
const unsigned char g_pProductString[] =
{
(10 + 1) * 2,
USB_DTYPE_STRING,
'M', 0, 'a', 0, 't', 0, 'e', 0, ' ', 0, 'L', 0, 'i', 0, 'g', 0, 'h', 0,
't', 0
};
//*****************************************************************************
//
// The serial number string.
//
//*****************************************************************************
const unsigned char g_pSerialNumberString[] =
{
(8 + 1) * 2,
USB_DTYPE_STRING,
'0', 0, '0', 0, '0', 0, '0', 0, '0', 0, '0', 0, '3', 0, '2', 0
};
//*****************************************************************************
//
// The data interface description string.
//
//*****************************************************************************
const unsigned char g_pDataInterfaceString[] =
{
(19 + 1) * 2,
USB_DTYPE_STRING,
'B', 0, 'u', 0, 'l', 0, 'k', 0, ' ', 0, 'D', 0, 'a', 0, 't', 0,
'a', 0, ' ', 0, 'I', 0, 'n', 0, 't', 0, 'e', 0, 'r', 0, 'f', 0,
'a', 0, 'c', 0, 'e', 0
};
//*****************************************************************************
//
// The configuration description string.
//
//*****************************************************************************
const unsigned char g_pConfigString[] =
{
(23 + 1) * 2,
USB_DTYPE_STRING,
'B', 0, 'u', 0, 'l', 0, 'k', 0, ' ', 0, 'D', 0, 'a', 0, 't', 0,
'a', 0, ' ', 0, 'C', 0, 'o', 0, 'n', 0, 'f', 0, 'i', 0, 'g', 0,
'u', 0, 'r', 0, 'a', 0, 't', 0, 'i', 0, 'o', 0, 'n', 0
};
//*****************************************************************************
//
// The descriptor string table.
//
//*****************************************************************************
const unsigned char * const g_pStringDescriptors[] =
{
g_pLangDescriptor,
g_pManufacturerString,
g_pProductString,
g_pSerialNumberString,
g_pDataInterfaceString,
g_pConfigString
};
#define NUM_STRING_DESCRIPTORS (sizeof(g_pStringDescriptors) / \
sizeof(unsigned char *))
//*****************************************************************************
//
// The bulk device initialization and customization structures. In this case,
// we are using USBBuffers between the bulk device class driver and the
// application code. The function pointers and callback data values are set
// to insert a buffer in each of the data channels, transmit and receive.
//
// With the buffer in place, the bulk channel callback is set to the relevant
// channel function and the callback data is set to point to the channel
// instance data. The buffer, in turn, has its callback set to the application
// function and the callback data set to our bulk instance structure.
//
//*****************************************************************************
tBulkInstance g_sBulkInstance;
extern const tUSBBuffer g_sRxBuffer;
const tUSBDBulkDevice g_sBulkDevice =
{
USB_VID_STELLARIS,
USB_PID_BULK,
500,
USB_CONF_ATTR_SELF_PWR,
USBBufferEventCallback,
(void *)&g_sRxBuffer,
USBBufferEventCallback,
(void *)0,
g_pStringDescriptors,
NUM_STRING_DESCRIPTORS,
&g_sBulkInstance
};
//*****************************************************************************
//
// Receive buffer (from the USB perspective).
//
//*****************************************************************************
unsigned char g_pucUSBRxBuffer[BULK_BUFFER_SIZE];
unsigned char g_pucRxBufferWorkspace[USB_BUFFER_WORKSPACE_SIZE];
const tUSBBuffer g_sRxBuffer =
{
false, // This is a receive buffer.
RxHandler, // pfnCallback
(void *)&g_sBulkDevice, // Callback data is our device pointer.
USBDBulkPacketRead, // pfnTransfer
USBDBulkRxPacketAvailable, // pfnAvailable
(void *)&g_sBulkDevice, // pvHandle
g_pucUSBRxBuffer, // pcBuffer
BULK_BUFFER_SIZE, // ulBufferSize
g_pucRxBufferWorkspace // pvWorkspace
};

44
firmware/usb_bulk_structs.h Normal file
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//*****************************************************************************
//
// usb_bulk_structs.h - Data structures defining this bulk USB device.
//
// Copyright (c) 2012 Texas Instruments Incorporated. All rights reserved.
// Software License Agreement
//
// Texas Instruments (TI) is supplying this software for use solely and
// exclusively on TI's microcontroller products. The software is owned by
// TI and/or its suppliers, and is protected under applicable copyright
// laws. You may not combine this software with "viral" open-source
// software in order to form a larger program.
//
// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
// DAMAGES, FOR ANY REASON WHATSOEVER.
//
// This is part of revision 9453 of the EK-LM4F120XL Firmware Package.
//
//*****************************************************************************
#ifndef _USB_BULK_STRUCTS_H_
#define _USB_BULK_STRUCTS_H_
//*****************************************************************************
//
// The size of the transmit and receive buffers used. 256 is chosen pretty
// much at random though the buffer should be at least twice the size of
// a maximum-sized USB packet.
//
//*****************************************************************************
#define BULK_BUFFER_SIZE 256
extern unsigned long RxHandler(void *pvCBData, unsigned long ulEvent,
unsigned long ulMsgValue, void *pvMsgData);
extern const tUSBBuffer g_sRxBuffer;
extern const tUSBDBulkDevice g_sBulkDevice;
extern unsigned char g_pucUSBRxBuffer[];
#endif

57
firmware/usb_dev_bulk.ld Normal file
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/******************************************************************************
*
* usb_dev_bulk.ld - Linker configuration file for usb_dev_bulk.
*
* Copyright (c) 2012 Texas Instruments Incorporated. All rights reserved.
* Software License Agreement
*
* Texas Instruments (TI) is supplying this software for use solely and
* exclusively on TI's microcontroller products. The software is owned by
* TI and/or its suppliers, and is protected under applicable copyright
* laws. You may not combine this software with "viral" open-source
* software in order to form a larger program.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
* NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
* NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
* CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
* DAMAGES, FOR ANY REASON WHATSOEVER.
*
* This is part of revision 9453 of the EK-LM4F120XL Firmware Package.
*
*****************************************************************************/
MEMORY
{
FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x00040000
SRAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00008000
}
SECTIONS
{
.text :
{
_text = .;
KEEP(*(.isr_vector))
*(.text*)
*(.rodata*)
_etext = .;
} > FLASH
.data : AT(ADDR(.text) + SIZEOF(.text))
{
_data = .;
*(vtable)
*(.data*)
_edata = .;
} > SRAM
.bss :
{
_bss = .;
*(.bss*)
*(COMMON)
_ebss = .;
} > SRAM
}