Texas Instruments TMS470R1x Getting Started With the Assembler and Linker, Example 5±2. file2.asm

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Getting Started With the Assembler and Linker

5.1 Getting Started With the Assembler and Linker

This section provides a quick walkthrough of the assembler and linker so that you can get started without reading the entire TMS470R1x Assembly Language Tools User's Guide. Example 5±1 through Example 5±6 show the most common methods for invoking the assembler and linker.

1)Create two short source files to use for the walkthrough; call them file1.asm and file2.asm. (See Example 5±1 and Example 5±2.)

Example 5±1. file1.asm

 

.global inclw

start:

MOV

r6, #0

 

MOV

r7, #0

loop:

BL

inclw

 

BCC

loop

.end

Example 5±2. file2.asm

.global inclw

inclw: ADDS

r7, r7, #1

ADDCSS

r6, r6, #1

MOV

pc, lr

.end

2)Enter the following command to assemble file1.asm: asm470 file1

The asm470 command invokes the assembler. The input source file is file1.asm. (If the input file extension is .asm, you do not have to specify the extension; the assembler uses .asm as the default.)

This example creates an object file called file1.obj. The assembler creates an object file only if there are no errors in assembly. You can specify a name for the object file, but if you do not, the assembler uses the input file- name with an extension of .obj.

5-2

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Contents Getting Started Guide SPNU117B TMS470R1x Code Generation Tools Getting Started Guide Important Notice About This Manual Notational ConventionsSET CDIR=pathname1 pathname2 Related Documentation From Texas InstrumentsSet PATH=c\tooldir%PATH% Trademarks If You Need Assistance North America, South America, Central AmericaContents Setting Up the Code Generation Tools With SunOS Defines terms and acronyms used in this book Page Setting Up the Code Generation Tools With DOS or Windows System Requirements Hardware checklistSoftware checklist Installing the tools on Windows 3.1x systems Installing the Code Generation ToolsInstalling the tools on DOS systems InstallSetting Up the Code Generation Environment Adir Cdir Coption TMP\tooldir Set ADIR=pathname1 pathname2Set COPTION=±qs ±z Setting default shell options CoptionTMS470R1x Assembly Language Tools Users Guide Verifying that the environment variables are set Resetting defined environment variablesSpecifying a temporary file directory TMP Where to Go From Here Performance ConsiderationsChapter TMS470R1x Code Generation Tools \setup.exe These variables are set up in the registry under \tooldir Set COPTION=option1 option2 Set variablename= Set ADIR=Where to Go From Here Setting Up the Code Generation Tools With SunOS Disk space Mount ±rt hsfs /dev/sr0 /cdrom exit Cd /cdrom/sunos Boot ±rMounting the CD-ROM Mount ±rF hsfs /dev/sr0 /cdrom exit Cd /cdrom/cdrom0/sunosUmount /cdrom eject /dev/sr0 exit Copying the filesUnmounting the CD-ROM Cd ejectSetting Up the Code Generation Environment Setenv Adir ºpathname1 pathname2 . . .º Yourpathname /tooldirSet path=/yourpathname /tooldir $path ADIR=ºpathname1 pathname2 . . .º export AdirSetenv Cdir ªpathname1 pathname2 . . .º CDIR=ªpathname1 pathname2 . . .º export CdirSetenv Coption º±qs ±zº TMP=º/tempº export TMP Reinitializing your shellSetenv TMP º/tempº Source ~/.cshrcTo verify that the environment variables are set, enter Setting Up the Code Generation Tools on an HP Workstation An HP 9000 Series 700 PA-RISC computer Mount ±rt cdfs /dev/dsk/yourcdromdevice /cdrom exit Cd /cdrom/hpPATH=tooldir$PATH Setting up the software tools using a C shellSetting up the software tools using a Korn shell Umount /cdrom exitSetting Up the Code Generation Environment ADIR=ºpathname1 pathname2 … º export Adir Identifying alternate directories for the assembler AdirSetenv Adir ºpathname1 pathname2 … º Identifying alternate directories for the compiler Cdir Setenv Cdir ªpathname1 pathname2 . . .ºSpecifying a temporary file directory TMP Unsetenv variable name Where to Go From Here Getting Started With Code Generation Tools Getting Started With the Assembler and Linker Example 5±2. file2.asmGetting Started With the Code Generation Tools Example 5±4. Output Map File, lnker2.map Example 5±5. Sample Linker Command File, linker2.cmd Entry Point Symbol Memory Configuration Cl470 ±o ±k function Getting Started With the C CompilerCl470 ±o ±mt funtion Cl470 ±s function ±z lnk32.cmd ±o function.out Release Notes Media Contents ±2. Media Contents for PCs Assembler enhancements Release EnhancementsGeneral enhancements Compiler enhancements Page Troubleshooting DOS Systems Troubleshooting in the Protected-Mode Environment Error Messages PMINFO32.EXE programTable A±1. Pminfo Fields Action Make more memory available and try again Kernel Error MessagesAction Recopy the file from the source media Action Reinstall and run the tools on a 386 or later PC Action Contact technical supportExecution Action Rerun the program and/or restart your computerIncrease the Dpmimemorylimit in the DOS box set Cause this errorMemory is available to non-Windows programs. Under OS/2 TingsAction Make sure that the filename was spelled correctly DOS/4G Error MessagesAction Free some memory for the DOS/4G application DOS/4G Error Messages Glossary Glossary Glossary B-3 Page Index Index MS-DOS Pminfo Setup.exe For DOS systems For Windows 3.1x systems Windows 95/NT systems Index-6 Important Notice

TMS470R1x specifications

The Texas Instruments TMS470R1x series is an advanced family of microcontrollers designed for automotive and industrial applications, renowned for their robust performance, flexibility, and reliable functionality. Built on a 32-bit RISC architecture, this series provides a powerful computing platform, tailored for embedded control systems.

One of the standout features of the TMS470R1x is its high-performance processing capabilities. Operating at clock speeds of up to 120 MHz, these microcontrollers can handle complex calculations and control algorithms efficiently. The TMS470R1x also incorporates a rich set of peripherals, including timers, pulse width modulation (PWM) modules, and communication interfaces like CAN, SPI, and UART. This versatility makes the series suitable for a wide range of applications, from automotive engine control units to industrial automation systems.

Incorporating advanced memory options, the TMS470R1x features Flash memory sizes ranging from 128 KB to 512 KB, along with RAM ranging from 20 KB to 64 KB. This ample memory is crucial for storing firmware and handling multiple data streams in real time. The microcontrollers also support in-system programming, allowing for easy updates and code modifications during the product lifecycle.

The TMS470R1x series is designed with safety in mind. It adheres to ISO 26262 standards, ensuring high levels of functional safety necessary for automotive systems. Features such as redundancy, error correction, and built-in safety mechanisms ensure operations remain reliable even in fault conditions.

Another important characteristic of the TMS470R1x is its low power consumption, making it ideal for battery-operated devices and equipment. The series employs various power management techniques, including low-power sleep modes, enabling manufacturers to optimize their systems without sacrificing performance.

The integrated Debug and Trace capabilities of the TMS470R1x facilitate effective development and troubleshooting. Engineers can debug their applications in real time, significantly reducing time-to-market and enhancing overall product quality.

In summary, the Texas Instruments TMS470R1x microcontroller series offers a powerful and versatile platform for complex automotive and industrial applications. With its high processing speed, extensive memory options, compliance with safety standards, low power consumption, and robust debugging capabilities, the TMS470R1x is a reliable choice for developers seeking to create innovative and efficient embedded systems. These features combine to position the TMS470R1x series as a leading choice in the expanding field of advanced microcontrollers.
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