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/boot_demo_uart/boot_demo_uart.c | |
| parent | 990090a4cc9070837d31e66b58d40f0c3d038741 (diff) | |
Add more board models
Diffstat (limited to 'boards/dk-tm4c129x/boot_demo_uart/boot_demo_uart.c')
| -rw-r--r-- | boards/dk-tm4c129x/boot_demo_uart/boot_demo_uart.c | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/boards/dk-tm4c129x/boot_demo_uart/boot_demo_uart.c b/boards/dk-tm4c129x/boot_demo_uart/boot_demo_uart.c new file mode 100644 index 0000000..807c669 --- /dev/null +++ b/boards/dk-tm4c129x/boot_demo_uart/boot_demo_uart.c @@ -0,0 +1,224 @@ +//*****************************************************************************
+//
+// boot_demo_uart.c - UART boot loader 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 "inc/hw_memmap.h"
+#include "inc/hw_nvic.h"
+#include "inc/hw_types.h"
+#include "driverlib/rom.h"
+#include "driverlib/rom_map.h"
+#include "driverlib/sysctl.h"
+#include "driverlib/uart.h"
+#include "grlib/grlib.h"
+#include "grlib/widget.h"
+#include "drivers/frame.h"
+#include "drivers/kentec320x240x16_ssd2119.h"
+#include "drivers/pinout.h"
+#include "drivers/touch.h"
+
+//*****************************************************************************
+//
+//! \addtogroup example_list
+//! <h1>Boot Loader UART Demo (boot_demo_uart)</h1>
+//!
+//! This example demonstrates the use of the ROM-based UART boot loader. When
+//! the application runs, it will wait for the screen to be pressed (to
+//! simulate an application waiting for a trigger to begin a firmware update)
+//! and then branch to the UART boot loader in the ROM. The UART is configured
+//! for a baud rate of 115,200 and does not require the use of auto-bauding.
+//
+//*****************************************************************************
+
+//*****************************************************************************
+//
+// A global we use to keep track of when the user presses the screen.
+//
+//*****************************************************************************
+volatile bool g_bFirmwareUpdate = false;
+
+//*****************************************************************************
+//
+// The error routine that is called if the driver library encounters an error.
+//
+//*****************************************************************************
+#ifdef DEBUG
+void
+__error__(char *pcFilename, unsigned long ulLine)
+{
+}
+#endif
+
+//*****************************************************************************
+//
+// This function is called in interrupt context by the touch screen driver when
+// there is a pointer event.
+//
+//*****************************************************************************
+int32_t
+TSHandler(uint32_t ui32Message, int32_t i32X, int32_t i32Y)
+{
+ //
+ // See if this is a pointer up message.
+ //
+ if(ui32Message == WIDGET_MSG_PTR_UP)
+ {
+ //
+ // The screen has been pressed and released, so begin the firmware
+ // update.
+ //
+ g_bFirmwareUpdate = true;
+ }
+
+ //
+ // Success.
+ //
+ return(0);
+}
+
+//*****************************************************************************
+//
+// A simple application demonstrating use of the boot loader,
+//
+//*****************************************************************************
+int
+main(void)
+{
+ uint32_t ui32SysClock;
+ tContext sContext;
+ tRectangle sRect;
+
+ //
+ // Run from the PLL at 120 MHz.
+ //
+ 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(ui32SysClock);
+
+ //
+ // Initialize the graphics context.
+ //
+ GrContextInit(&sContext, &g_sKentec320x240x16_SSD2119);
+
+ //
+ // Draw the application frame.
+ //
+ FrameDraw(&sContext, "boot-demo-uart");
+
+ //
+ // Print instructions on the screen.
+ //
+ GrStringDrawCentered(&sContext, "Press the screen to start", -1, 160, 108,
+ false);
+ GrStringDrawCentered(&sContext, "the update process", -1, 160, 128, false);
+
+ //
+ // Initialize the touch screen driver.
+ //
+ TouchScreenInit(ui32SysClock);
+
+ //
+ // Set the touch screen event handler.
+ //
+ TouchScreenCallbackSet(TSHandler);
+
+ //
+ // Enable the UART that will be used for the firmware update.
+ //
+ ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);
+
+ //
+ // Configure the UART for 115200, 8-N-1.
+ //
+ ROM_UARTConfigSetExpClk(UART0_BASE, ui32SysClock, 115200,
+ (UART_CONFIG_PAR_NONE | UART_CONFIG_STOP_ONE |
+ UART_CONFIG_WLEN_8));
+
+ //
+ // Enable the UART operation.
+ //
+ ROM_UARTEnable(UART0_BASE);
+
+ //
+ // Wait until the screen has been pressed, indicating that the firwmare
+ // update should begin.
+ //
+ while(!g_bFirmwareUpdate)
+ {
+ }
+
+ //
+ // Clear the screen.
+ //
+ sRect.i16XMin = 0;
+ sRect.i16YMin = 0;
+ sRect.i16XMax = 319;
+ sRect.i16YMax = 239;
+ GrContextForegroundSet(&sContext, ClrBlack);
+ GrRectFill(&sContext, &sRect);
+
+ //
+ // Indicate that the firmware update is about to start.
+ //
+ GrContextForegroundSet(&sContext, ClrWhite);
+ GrStringDrawCentered(&sContext, "Update process started...", -1, 160, 98,
+ false);
+ GrStringDrawCentered(&sContext, "Using UART0 with", -1, 160, 138, false);
+ GrStringDrawCentered(&sContext, "115,200 baud, 8-N-1.", -1, 160, 158,
+ false);
+
+ //
+ // Disable all processor interrupts. Instead of disabling them one at a
+ // time, a direct write to NVIC is done to disable all peripheral
+ // interrupts.
+ //
+ HWREG(NVIC_DIS0) = 0xffffffff;
+ HWREG(NVIC_DIS1) = 0xffffffff;
+ HWREG(NVIC_DIS2) = 0xffffffff;
+ HWREG(NVIC_DIS3) = 0xffffffff;
+ HWREG(NVIC_DIS4) = 0xffffffff;
+
+ //
+ // Call the ROM UART boot loader.
+ //
+ ROM_UpdateUART();
+
+ //
+ // The boot loader should not return. In the off chance that it does,
+ // enter a dead loop.
+ //
+ while(1)
+ {
+ }
+}
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