diff options
| author | Yuval Adam <yuv.adm@gmail.com> | 2014-06-29 12:34:32 +0300 |
|---|---|---|
| committer | Yuval Adam <yuv.adm@gmail.com> | 2014-06-29 12:34:32 +0300 |
| commit | c3e4c9a25c2910d2d66d52215b3406b13d5b23d5 (patch) | |
| tree | added370d1e356901f8579f076e3263fb0464db7 /boards/dk-tm4c129x/usb_dev_msc/usb_dev_msc.c | |
| parent | 990090a4cc9070837d31e66b58d40f0c3d038741 (diff) | |
Add more board models
Diffstat (limited to 'boards/dk-tm4c129x/usb_dev_msc/usb_dev_msc.c')
| -rw-r--r-- | boards/dk-tm4c129x/usb_dev_msc/usb_dev_msc.c | 616 |
1 files changed, 616 insertions, 0 deletions
diff --git a/boards/dk-tm4c129x/usb_dev_msc/usb_dev_msc.c b/boards/dk-tm4c129x/usb_dev_msc/usb_dev_msc.c new file mode 100644 index 0000000..f74c8b2 --- /dev/null +++ b/boards/dk-tm4c129x/usb_dev_msc/usb_dev_msc.c @@ -0,0 +1,616 @@ +//*****************************************************************************
+//
+// usb_dev_msc.c - Main routines for the device mass storage class example.
+//
+// Copyright (c) 2013-2014 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 2.1.0.12573 of the DK-TM4C129X Firmware Package.
+//
+//*****************************************************************************
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "driverlib/rom.h"
+#include "driverlib/rom_map.h"
+#include "driverlib/sysctl.h"
+#include "driverlib/systick.h"
+#include "driverlib/udma.h"
+#include "grlib/grlib.h"
+#include "usblib/usblib.h"
+#include "usblib/device/usbdevice.h"
+#include "usblib/device/usbdmsc.h"
+#include "utils/ustdlib.h"
+#include "fatfs/src/diskio.h"
+#include "drivers/frame.h"
+#include "drivers/kentec320x240x16_ssd2119.h"
+#include "drivers/mx66l51235f.h"
+#include "drivers/pinout.h"
+#include "usbdspiflash.h"
+#include "usb_msc_structs.h"
+
+//*****************************************************************************
+//
+//! \addtogroup example_list
+//! <h1>USB MSC Device (usb_dev_msc)</h1>
+//!
+//! This example application turns the evaluation board into a USB mass storage
+//! class device. The application will use the onboard flash memory for the
+//! storage media for the mass storage device. The screen will display the
+//! current action occurring on the device ranging from disconnected, reading,
+//! writing and idle.
+//
+//*****************************************************************************
+
+//*****************************************************************************
+//
+// The number of ticks to wait before falling back to the idle state. Since
+// the tick rate is 100Hz this is approximately 1 second.
+//
+//*****************************************************************************
+#define USBMSC_ACTIVITY_TIMEOUT 100
+
+//*****************************************************************************
+//
+// This enumeration holds the various states that the device can be in during
+// normal operation.
+//
+//*****************************************************************************
+volatile enum
+{
+ //
+ // Unconfigured.
+ //
+ MSC_DEV_DISCONNECTED,
+
+ //
+ // Connected and fully enumerated but not currently handling a command.
+ //
+ MSC_DEV_IDLE,
+
+ //
+ // Currently reading the device.
+ //
+ MSC_DEV_READ,
+
+ //
+ // Currently writing the device.
+ //
+ MSC_DEV_WRITE,
+}
+g_eMSCState;
+
+//*****************************************************************************
+//
+// The Flags that handle updates to the status area to avoid drawing when no
+// updates are required..
+//
+//*****************************************************************************
+#define FLAG_UPDATE_STATUS 1
+static uint32_t g_ui32Flags;
+static uint32_t g_ui32IdleTimeout;
+
+//*****************************************************************************
+//
+// Graphics context used to show text on the display.
+//
+//*****************************************************************************
+tContext g_sContext;
+
+//******************************************************************************
+//
+// The DMA control structure table.
+//
+//******************************************************************************
+#ifdef ewarm
+#pragma data_alignment=1024
+tDMAControlTable psDMAControlTable[64];
+#elif defined(ccs)
+#pragma DATA_ALIGN(psDMAControlTable, 1024)
+tDMAControlTable psDMAControlTable[64];
+#else
+tDMAControlTable psDMAControlTable[64] __attribute__ ((aligned(1024)));
+#endif
+
+//*****************************************************************************
+//
+// A buffer used for updating the read/write counts.
+//
+//*****************************************************************************
+static char g_pcBuffer[32];
+
+//*****************************************************************************
+//
+// The system clock frequency in Hz.
+//
+//*****************************************************************************
+uint32_t g_ui32SysClock;
+
+//*****************************************************************************
+//
+// The error routine that is called if the driver library encounters an error.
+//
+//*****************************************************************************
+#ifdef DEBUG
+void
+__error__(char *pcFilename, uint32_t ui32Line)
+{
+}
+#endif
+
+//*****************************************************************************
+//
+// Handles bulk driver notifications related to the receive channel (data from
+// the USB host).
+//
+// \param pvCBData is the client-supplied callback pointer for this channel.
+// \param ui32Event identifies the event we are being notified about.
+// \param ui32MsgValue is an event-specific value.
+// \param pvMsgData is an event-specific pointer.
+//
+// This function is called by the bulk driver to notify us of any events
+// related to operation of the receive data channel (the OUT channel carrying
+// data from the USB host).
+//
+// \return The return value is event-specific.
+//
+//*****************************************************************************
+uint32_t
+RxHandler(void *pvCBData, uint32_t ui32Event, uint32_t ui32MsgValue,
+ void *pvMsgData)
+{
+ return(0);
+}
+
+//*****************************************************************************
+//
+// Handles bulk driver notifications related to the transmit channel (data to
+// the USB host).
+//
+// \param pvCBData is the client-supplied callback pointer for this channel.
+// \param ui32Event identifies the event we are being notified about.
+// \param ui32MsgValue is an event-specific value.
+// \param pvMsgData is an event-specific pointer.
+//
+// This function is called by the bulk driver to notify us of any events
+// related to operation of the transmit data channel (the IN channel carrying
+// data to the USB host).
+//
+// \return The return value is event-specific.
+//
+//*****************************************************************************
+uint32_t
+TxHandler(void *pvCBData, uint32_t ui32Event, uint32_t ui32MsgValue,
+ void *pvMsgData)
+{
+ return(0);
+}
+
+//*****************************************************************************
+//
+// This function updates the status area of the screen. It uses the current
+// state of the application to print the status area.
+//
+//*****************************************************************************
+void
+UpdateStatus(char *pcString)
+{
+ //
+ // Write the current state to the bottom of screen.
+ //
+ GrStringDrawCentered(&g_sContext, pcString, -1, 160, 78, true);
+}
+
+//*****************************************************************************
+//
+// This function updates the read/write count area of the screen.
+//
+//*****************************************************************************
+void
+UpdateCount(uint32_t ui32Count, uint32_t ui32Y)
+{
+ //
+ // See if the count is at least a billion.
+ //
+ if(ui32Count > 999999999)
+ {
+ //
+ // Format the value with commas separating the billions, millions,
+ // thousands, and ones.
+ //
+ usnprintf(g_pcBuffer, sizeof(g_pcBuffer), " %d,%03d,%03d,%03d ",
+ ui32Count / 1000000000, (ui32Count / 1000000) % 1000,
+ (ui32Count / 1000) % 1000, ui32Count % 1000);
+ }
+
+ //
+ // See if the count is at least a million.
+ //
+ else if(ui32Count > 999999)
+ {
+ //
+ // Format the value with commas separating the millions, thousands, and
+ // ones.
+ //
+ usnprintf(g_pcBuffer, sizeof(g_pcBuffer), " %d,%03d,%03d ",
+ (ui32Count / 1000000) % 1000, (ui32Count / 1000) % 1000,
+ ui32Count % 1000);
+ }
+
+ //
+ // See if the count is at least a thousand.
+ //
+ else if(ui32Count > 999)
+ {
+ //
+ // Format the value with a comma separating the thousands and ones.
+ //
+ usnprintf(g_pcBuffer, sizeof(g_pcBuffer), " %d,%03d ",
+ (ui32Count / 1000) % 1000, ui32Count % 1000);
+ }
+
+ //
+ // Otherwise the value is less than a thousand.
+ //
+ else
+ {
+ //
+ // Simply print the value. This will occur in two cases: at startup
+ // when the count is 0 and after the 32-bit count has rolled-over. In
+ // the later case, a large number of spaces are needed before and after
+ // the actual value in order to erase the text from the large value
+ // that preceeded the roll-over.
+ //
+ usnprintf(g_pcBuffer, sizeof(g_pcBuffer), " %d ",
+ ui32Count);
+ }
+
+ //
+ // Draw the formatted string.
+ //
+ GrStringDrawCentered(&g_sContext, g_pcBuffer, -1, 160, ui32Y, true);
+}
+
+//*****************************************************************************
+//
+// This function is the call back notification function provided to the USB
+// library's mass storage class.
+//
+//*****************************************************************************
+uint32_t
+USBDMSCEventCallback(void *pvCBData, uint32_t ui32Event, uint32_t ui32MsgParam,
+ void *pvMsgData)
+{
+ //
+ // Reset the time out every time an event occurs.
+ //
+ g_ui32IdleTimeout = USBMSC_ACTIVITY_TIMEOUT;
+
+ switch(ui32Event)
+ {
+ //
+ // Writing to the device.
+ //
+ case USBD_MSC_EVENT_WRITING:
+ {
+ //
+ // Only update if this is a change.
+ //
+ if(g_eMSCState != MSC_DEV_WRITE)
+ {
+ //
+ // Go to the write state.
+ //
+ g_eMSCState = MSC_DEV_WRITE;
+
+ //
+ // Cause the main loop to update the screen.
+ //
+ g_ui32Flags |= FLAG_UPDATE_STATUS;
+ }
+
+ break;
+ }
+
+ //
+ // Reading from the device.
+ //
+ case USBD_MSC_EVENT_READING:
+ {
+ //
+ // Only update if this is a change.
+ //
+ if(g_eMSCState != MSC_DEV_READ)
+ {
+ //
+ // Go to the read state.
+ //
+ g_eMSCState = MSC_DEV_READ;
+
+ //
+ // Cause the main loop to update the screen.
+ //
+ g_ui32Flags |= FLAG_UPDATE_STATUS;
+ }
+
+ break;
+ }
+
+ //
+ // The USB host has disconnected from the device.
+ //
+ case USB_EVENT_DISCONNECTED:
+ {
+ //
+ // Go to the disconnected state.
+ //
+ g_eMSCState = MSC_DEV_DISCONNECTED;
+
+ //
+ // Cause the main loop to update the screen.
+ //
+ g_ui32Flags |= FLAG_UPDATE_STATUS;
+
+ break;
+ }
+
+ //
+ // The USB host has connected to the device.
+ //
+ case USB_EVENT_CONNECTED:
+ {
+ //
+ // Go to the idle state to wait for read/writes.
+ //
+ g_eMSCState = MSC_DEV_IDLE;
+
+ break;
+ }
+
+ case USBD_MSC_EVENT_IDLE:
+ default:
+ {
+ break;
+ }
+ }
+
+ return(0);
+}
+
+//*****************************************************************************
+//
+// This is the handler for this SysTick interrupt. This is to detect idle
+// state for the SPI flash.
+//
+//*****************************************************************************
+void
+SysTickHandler(void)
+{
+ if(g_ui32IdleTimeout != 0)
+ {
+ g_ui32IdleTimeout--;
+ }
+}
+
+//*****************************************************************************
+//
+// This is the main loop that runs the application.
+//
+//*****************************************************************************
+int
+main(void)
+{
+ uint32_t ui32Read, ui32Write;
+
+ //
+ // Run from the PLL at 120 MHz.
+ //
+ g_ui32SysClock = MAP_SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ |
+ SYSCTL_OSC_MAIN | SYSCTL_USE_PLL |
+ SYSCTL_CFG_VCO_480), 120000000);
+
+ //
+ // Configure the device pins.
+ //
+ PinoutSet();
+
+ //
+ // Initialize the display driver.
+ //
+ Kentec320x240x16_SSD2119Init(g_ui32SysClock);
+
+ //
+ // Initialize the graphics context.
+ //
+ GrContextInit(&g_sContext, &g_sKentec320x240x16_SSD2119);
+
+ //
+ // Draw the application frame.
+ //
+ FrameDraw(&g_sContext, "usb-dev-msc");
+
+ //
+ // Place the static status text on the display.
+ //
+ GrStringDrawCentered(&g_sContext, "Status", -1, 160, 58, false);
+ GrStringDrawCentered(&g_sContext, "Bytes Read", -1, 160, 118, false);
+ GrStringDrawCentered(&g_sContext, "Bytes Written", -1, 160, 178, false);
+ GrContextForegroundSet(&g_sContext, ClrGray);
+ UpdateCount(0, 138);
+ UpdateCount(0, 198);
+
+ //
+ // Configure SysTick for a 100Hz interrupt. This is to detect idle state
+ // every 10ms after a state change.
+ //
+ ROM_SysTickPeriodSet(g_ui32SysClock / 100);
+ ROM_SysTickEnable();
+ ROM_SysTickIntEnable();
+
+ //
+ // Configure and enable uDMA
+ //
+ ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_UDMA);
+ SysCtlDelay(10);
+ ROM_uDMAControlBaseSet(&psDMAControlTable[0]);
+ ROM_uDMAEnable();
+
+ //
+ // Initialize the idle timeout and reset all flags.
+ //
+ g_ui32IdleTimeout = 0;
+ g_ui32Flags = 0;
+
+ //
+ // Initialize the state to idle.
+ //
+ g_eMSCState = MSC_DEV_DISCONNECTED;
+
+ //
+ // Draw the status bar and set it to idle.
+ //
+ UpdateStatus("Disconnected");
+
+ //
+ // Enable the USB controller.
+ //
+ ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_USB0);
+
+ //
+ // Enable the SSI3 used by SPI flash.
+ //
+ ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI3);
+ ROM_SysCtlPeripheralReset(SYSCTL_PERIPH_SSI3);
+
+ //
+ // Set the USB stack mode to Device mode with VBUS monitoring.
+ //
+ USBStackModeSet(0, eUSBModeDevice, 0);
+
+ //
+ // Pass our device information to the USB library and place the device
+ // on the bus.
+ //
+ USBDMSCInit(0, (tUSBDMSCDevice*)&g_sMSCDevice);
+
+ //
+ // Initialize the SD card, if present. This prevents it from interfering
+ // with accesses to the SPI flash.
+ //
+ disk_initialize(0);
+
+ //
+ // Initialize MX66L51235F Flash memory.
+ //
+ MX66L51235FInit(g_ui32SysClock);
+
+ //
+ // Drop into the main loop.
+ //
+ ui32Read = g_ui32ReadCount;
+ ui32Write = g_ui32WriteCount;
+ while(1)
+ {
+ switch(g_eMSCState)
+ {
+ case MSC_DEV_READ:
+ {
+ //
+ // Update the screen if necessary.
+ //
+ if(g_ui32Flags & FLAG_UPDATE_STATUS)
+ {
+ UpdateStatus(" Reading ");
+ g_ui32Flags &= ~FLAG_UPDATE_STATUS;
+ }
+
+ //
+ // If there is no activity then return to the idle state.
+ //
+ if(g_ui32IdleTimeout == 0)
+ {
+ UpdateStatus(" Idle ");
+ g_eMSCState = MSC_DEV_IDLE;
+ }
+
+ break;
+ }
+
+ case MSC_DEV_WRITE:
+ {
+ //
+ // Update the screen if necessary.
+ //
+ if(g_ui32Flags & FLAG_UPDATE_STATUS)
+ {
+ UpdateStatus(" Writing ");
+ g_ui32Flags &= ~FLAG_UPDATE_STATUS;
+ }
+
+ //
+ // If there is no activity then return to the idle state.
+ //
+ if(g_ui32IdleTimeout == 0)
+ {
+ UpdateStatus(" Idle ");
+ g_eMSCState = MSC_DEV_IDLE;
+ }
+ break;
+ }
+
+ case MSC_DEV_DISCONNECTED:
+ {
+ //
+ // Update the screen if necessary.
+ //
+ if(g_ui32Flags & FLAG_UPDATE_STATUS)
+ {
+ UpdateStatus(" Disconnected ");
+ g_ui32Flags &= ~FLAG_UPDATE_STATUS;
+ }
+ break;
+ }
+
+ case MSC_DEV_IDLE:
+ {
+ break;
+ }
+
+ default:
+ {
+ break;
+ }
+ }
+
+ //
+ // Update the read count if it has changed.
+ //
+ if(g_ui32ReadCount != ui32Read)
+ {
+ ui32Read = g_ui32ReadCount;
+ UpdateCount(ui32Read, 138);
+ }
+
+ //
+ // Update the write count if it has changed.
+ //
+ if(g_ui32WriteCount != ui32Write)
+ {
+ ui32Write = g_ui32WriteCount;
+ UpdateCount(ui32Write, 198);
+ }
+ }
+}
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