Texas Instruments TMS320C6000 manuale d’uso

TMS320C6000 DSK Board Support Library API User ’ s Guide Literature Number: SPRU432A October 2001 Printed on Recycled Paper[...]

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iii Read This First Preface Read This First About This Manual The TMS320C6000 t DSK Board Support Library (BSL) is a set of application programming interfaces (APIs) used to configure and control all on-board de- vices. It i s intended to make it easier for developers by eliminating much of the tedious grunt-work usually needed to get algorithms up[...]

How to Use This Manual iv Notational Conventions This document uses the following conventions: - Program listings, program examples, and interactive displays are shown in a special typeface . - In syntax descriptions, the function or macro appears in a bold typeface and the parameters appear in plainface within parentheses. Portions of a syntax tha[...]

How to Use This Manual v Read This First TMS320C6000 Programmer ’ s Guide (literature number SPRU198) describes ways to optimize C and assembly code for the TMS320C6000 DSPs and includes application program examples. TMS320C6000 Assembly Language T ools User ’ s Guide (literature number SPRU186) describes the assembly language tools (assembler [...]

Contents vii Contents 1 BSL Overview 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Provides an overview of the board support library (BSL), describes its beneficial features, and lists each of its API modules. 1.1 BSL Introduction 1-2 . . . . . . . . . . . .[...]

Contents viii 5 DIP API Module 5-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Provides a description of the DIP API module, lists the individual APIs within the module, and includes a reference section showing the single API function and constant within this mo[...]

T ables ix Contents T ables 1– 1. BSL Modules and Include Files 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1– 2. BSL Support Library Name and Symbol Conventions 1-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1– 3. BSL API Module Support for 671 1 DSK 1-4 .[...]

1-1 BSL Overview This chapter provides an overview of the board support library (BSL), de- scribes its beneficial features, and lists each of its API modules. T opic Page 1.1 BSL Introduction 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 BSL API Modules 1-3 . . . . . . . . . . . . . . . . . . . [...]

BSL Introduction 1-2 1.1 BSL Introduction Th e BSL provides a C-language interface for configuring and controlling all on- board devices. The library consists of discrete modules that are built and ar- chived into a library file. Each module represents an individual API and is re- ferred to simply as an API module. The module granularity is archite[...]

BSL API Modules 1-3 BSL Overview 1.2 BSL API Modules For each on-board device, one header file and one source file will be gener- ated with the following names: bsl_device.h and bsl_device.c . Also, a library will be built for a given board: i.e: bsl671 1dsk.lib Note : The soource files.c are archived into a single source file bsl.src. T able 1 –[...]

BSL API Modules 1-4 671 1 DSK Module Support T able 1 – 3 shows which board each API module is supported on. Currently , all modules described in the following chapters are supported by the C671 1 DSK. In the future, more APIs supported by other platforms will be added to the BSL. T able 1 – 2. BSL Support Library Name and Symbol Conventions Bo[...]

BSL Project Settings 1-5 BSL Overview 1.3 BSL Project Settings 1.3.1 User ’ s Program Setting Due to the interdependancies between CSL and BSL, the CSL is initialized by calling the CSL_init() function followed by the BSL initialization function, BSL_init() . Also, the two header files <csl.h> and <bsl.h> have to be included in your p[...]

2-1 AD535 API Module This chapter provides a description of the AD535 API module, lists the individ- ual APIs within the module, and includes a reference section showing the API functions, structures, and constants that are applicable to this module. T opic Page 2.1 AD535 API Module Description 2-2 . . . . . . . . . . . . . . . . . . . . . . . . . [...]

AD535 API Module Description 2-2 2.1 AD535 API Module Description The AD535 module (audio codec supported by the C671 1 DSK) serves as a level of abstraction such that it works the same for all AD535s supported on TI EVM/DSKs. T o use an AD535 device, you must first open it and obtain a device handle us- ing AD535_open() . Once opened, use the devi[...]

AD535 API Module Description 2-3 AD535 API Module Page Description T ype Syntax AD535_write F Writes data to be sent 2-16 AD535_writeHwi F Writes data to be sent 2-17 AD535_writeReg F Writes to the AD535 control registers 2-17 Note: F = Function; C = Constant; S = Structure; T = T ypedef[...]

AD535_Config 2-5 AD535 API Module 2.2 AD535 API Reference Closes codec channel AD535_close Function Void AD535_close( AD535_Handle hAD535 ); Arguments hAD535 Handle to codec channel, see AD535_open() Return V alue none Description This function closes a codec channel previously opened via AD535_open(). The registers for the codec are set to their p[...]

AD535_config 2-6 Description This is the AD535 configuration structure used to set up a codec channel. Y ou create and initialize this structure and then pass its address to the AD535_config() function. Example AD535_Config myConfig = { AD535_LOOPBACK_DISABLE, AD535_MICGAIN_OFF, AD535_GAIN_0DB, AD535_GAIN_0DB }; AD535_config(hAD535,&myConfig); [...]

AD553_freeMcbsp 2-7 AD535 API Module Description Sets 1 to the FREE field of the SPCR register of the given McBSP port. When FREE is set to 1, the serial clocks continue to run during an emulation halt. Example /* Set the FREE bit of Mcbsp serial port 0 */ AD535_freeMcbsp (MCBSP_DEV0);[...]

AD535_getMcbspHandle 2-8 Returns McBSP Handle AD535_getMcbsp Handle Function Mcbsp_Handle AD535_getMcbspHandle( AD535_Handle hAD535, ); Arguments hAD535 Handle to codec channel, see AD535_open() Return V alue Mcbsp_handle Handle to the opened McBSP associated to the number of McBSP . Description Returns the McBSP Handle associated with the McBSP us[...]

AD535_Id 2-9 AD535 API Module Description This AD535_Id structure is used to allocate a codec channel. Y ou create and initialize this structure, then pass its address to the AD535_open() function. Also, this structure allows you to access to the McBSP handle through the AD535_getMcbspHandle() function after calling AD535_open() . If you wish to us[...]

AD535_inGain 2-10 Sets AD535 ’ s input gain AD535_inGain Function void AD535_inGain( AD535_Handle hAD535, float inGain ); Arguments hAD535 Handle to codec channel, see AD535_open() inGain ADC input gain. Return V alue none Description Sets the AD535 ’ s input gain. 671 1 DSK - AD535_GAIN_MUTE - AD535_GAIN_0DB - – 36 dB <= inGain <= 12 d[...]

AD535_modifyReg 2-1 1 AD535 API Module Modifies specified control register AD535_modifyReg Function void AD535_modifyReg( AD535_Handle hAD535, AD535_Reg ad535Register, Uint32 val, Uint32 mask ); Arguments hAD535 Handle to codec channel, see AD535_open() ad535Register Control register enumeration: - AD535_REG_CTRL0 - AD535_REG_CTRL1 - AD535_REG_CTRL[...]

AD535_open 2-12 Opens codec channel AD535_open Function AD535_Handle AD535_open ( AD535_Id *myId ); Arguments myId Pointer to an object of type AD535_Id. This object contains the McBSP channel number and a McBSP handle. C671 1 DSK If you want to use the local codec, you may pass the predefined pointer AD535_ ON_6711DSK . If you want to use another [...]

AD535_powerDown 2-13 AD535 API Module Sets AD535 ’ s output gain AD535_outGain Function void AD535_outGain( AD535_Handle hAD535, float outGain ); Arguments hAD535 Handle to codec channel, see AD535_open() outGain DAC output gain. Return V alue none Description Sets the AD535 ’ s output gain. 671 1 DSK - AD535_GAIN_MUTE - AD535_GAIN_0DB - – 36[...]

AD535_read 2-14 Returns value of ouput from ADC AD535_read Function int AD535_read( AD535_Handle hAD535 ); Arguments hAD535 Handle to codec channel, see AD535_open() Return V alue int V alue returned from output of ADC. Description Returns the value of the ouput from the ADC. Example int val; val = AD535_read(hAD535); Display Code at Selected Addre[...]

AD535_readReg 2-15 AD535 API Module ad535Register Control register enumeration: - AD535_REG_CTRL0 - AD535_REG_CTRL1 - AD535_REG_CTRL2 - AD535_REG_CTRL3 - AD535_REG_CTRL4 - AD535_REG_CTRL5 Return V alue Uint32 V alue of specified control register . Description Returns the value of the specified control register . Example Uint32 controlRegVal; contro[...]

AD535_reset 2-16 Asserts software reset AD535_reset Function void AD535_reset( AD535_Handle hAD535 ); Arguments hAD535 Handle to codec channel, see AD535_open() Return V alue none Description Asserts a software reset and sets all the registers to their power-on default values. Example AD535_reset(hAD535); Compile time constant AD535_SUPPORT Constan[...]

AD535_writeReg 2-17 AD535 API Module Writes value to input of DAC AD535_writeHwi Function void AD535_writeHwi( AD535_Handle hAD535, int val ); Arguments hAD535 Handle to codec channel, see AD535_open() val V alue to be written to DAC. Return V alue none Description Writes value to the input of the DAC. Unlike the AD535_write API, it does not use po[...]

AD535_writeReg 2-18 Description Writes value to the specified control register . 671 1 DSK Note: Only the V oice channel is available on this board. This means the changes to control registers 0, 1, and 2 will have no effect on the operation of the codec. Example /* Set up 10.5db ADC input gain and 0dB microphone preamp gain in control register 4 *[...]

3-1 BOARD API Module This chapter provides a description of the BOARD API module, lists the individ- ual APIs within the module, and includes a reference section showing the API functions and constants that are applicable to this module. T opic Page 3.1 BOARD API Module Description 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

BOARD API Module Description 3-2 3.1 BOARD API Module Description The BOARD module is where we put board-specific content. This module has the potential to grow in the future as more boards are placed on the market. Currently , the module has some API functions for register access such as BOARD_readReg() , and BOARD_writeReg() . A predefined symbol[...]

BOARD_SUPPORT 3-3 BOARD API Module 3.2 BOARD API Reference Returns value of specified memory-mapped register BOARD_readReg Function Uint32 BOARD_readReg( BOARD_Reg boardRegister ); Arguments boardRegister Register enumeration C671 1 DSK - BOARD_REG_IOPOR T Return V alue Uint32 Returns specified register value Description Returns the value of the sp[...]

BOARD_writeReg 3-4 Writes value to specified memory-mapped register BOARD_writeReg Function void BOARD_writeReg( BOARD_Reg boardRegister, Uint32 val ); Arguments boardRegister Register enumeration C671 1 DSK - BOARD_REG_IOPOR T val V alue to be written to specified register . Return V alue none Description Writes the value to the specified memory-m[...]

4-1 BSL API Module This chapter provides a description of the BSL API module and includes a ref- erence section showing the single API function within this module. T opic Page 4.1 BSL API Module Description 4-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2 BSL API Reference 4-3 . . . . . . . . . . . . . . . . . . . . . .[...]

BSL API Module Description 4-2 4.1 BSL API Module Description The BSL module serves to initialize the API modules supported by the board.The following unique function has to be called before using the API func- tions: BSL_init () T able 4–1. BSL API Function Syntax T ype Description Page BSL_init F Initializes the BSL library 4-3 Note: F = Functi[...]

BSL_init 4-3 BSL API Module 4.2 BSL API Reference Initializes all programmable modules on board BSL_init Function void BSL_init(); Arguments none Return V alue none Description This function initializes all of the programmable modules on the board. C671 1 DSK - AD535 Codec - BOARD module - DIP switch - FLASH ROM - User LEDs Example BSL_init();[...]

5-1 DIP API Module This chapter provides a description of the DIP API module, lists the individual APIs within the module, and includes a reference section showing the single API function and constant within this module. T opic Page 5.1 DIP API Module Description 5-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2 DIP AP[...]

DIP API Module Description 5-2 5.1 DIP API Module Description This module has the following single API for reading DIP switch positions: DIP_get(dip#) returns a boolean value {0,1}. T able 5–1. DIP API Summary Syntax T ype Description Page DIP_get F Reads the status of the DIP switches 5-3 DIP_SUPPORT C A compile time constant whose value is 1 if[...]

DIP_SUPPORT 5-3 DIP API Module 5.2 DIP API Reference Returns current value of specified DIP switch DIP_get Function Uint32 DIP_get( Uint32 dipNum ); Arguments dipNum Specifies which DIP switch to be read, can be one of the following: - DIP_1 - DIP_2 - DIP_3 - … Return V alue Uint32 Current value of the specified DIP switch. - 0 = DIP switch posit[...]

6-1 FLASH API Module This chapter provides a description of the FLASH API module, lists the individ- ual APIs within the module, and includes a reference section showing the API functions and constants that are applicable to this module. T opic Page 6.1 FLASH API Module Description 6-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

FLASH API Module Description 6-2 6.1 FLASH API Module Description The FLASH module allows access to on-board flash and executes data memory manipulation by using the following three functions: FLASH_read(), FLASH_write() and FLASH_erase() For the 671 1 DSK, the 128KB FLASH is split into 128 bytes per page. T able 6–1. FLASH API Summary Syntax T y[...]

FLASH_checksum 6-3 FLASH API Module 6.2 FLASH API Reference Returns checksum of specified Flash data FLASH_checksum Function Uint32 FLASH_checksum( Uint32 locator, Uint32 length ); Arguments locator Addressing and page information for location in Flash memory . C671 1 DSK - FLASH_ST ART_ADDR - FLASH_P AGE_ADDR(x) :(x)– page number - 32-bit FLASH [...]

FLASH_erase 6-4 Erases specified segment of Flash memory FLASH_erase Function void FLASH_erase( Uint32 locator, Uint32 length ); Arguments locator Addressing and page information for location in Flash memory . C671 1 DSK - FLASH_ST ART_ADDR - FLASH_P AGE_ADDR(x) : (x)– page number - 32-bit Flash address length Length in bytes of data to be erased[...]

FLASH_read 6-5 FLASH API Module Reads data from FLASH address FLASH_read Function void FLASH_read( Uint32 locator, Uint32 dst, Uint32 length ); Arguments locator Addressing and page information for location in Flash memory . C671 1 DSK - FLASH_ST ART_ADDR - FLASH_P AGE_ADDR(x) :(x) – page number - 32-bit FLASH address dst Destination address leng[...]

FLASH_SUPPORT 6-6 Compile time constant FLASH_SUPPORT Constant FLASH_SUPPORT Description Compile time constant that has a value of 1 if the board supports the FLASH module and 0 otherwise. Y ou are not required to use this constant. Currently , all devices support this module. Example #if (FLASH_SUPPORT) /* do FLASH operations */ #endif Writes data[...]

FLASH_write 6-7 FLASH API Module Description Writes data to the Flash address (locator) from a source address (src). This function is limited by the page length of the Flash memory . Note: This function does not affect unspecified segments of Flash. For example, altering the lower half of a page of Flash memory does not change the value of the uppe[...]

7-1 LED API Module This chapter provides a description of the LED API module, lists the individual APIs within the module, and includes a reference section showing the API functions and constants that are applicable to this module. T opic Page 7.1 LED API Module Description 7-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7[...]

LED API Module Description 7-2 7.1 LED API Module Description This module has a simple API for configuring on-board LED outputs. Three states can be set by the following functions: - LED_on(led#) - LED_off(led#) - LED_toggle(led#) T able 7–1. LED API Summary Syntax T ype Description Page LED_off F T urns off the specified LED 7-3 LED_on F Turns o[...]

LED_on 7-3 LED API Module 7.2 LED API Reference T urns off specified LED LED_off Function void LED_off( Uint32 LedNum ); Arguments LedNum Specifies which LED to be turned of f. Can be one of the following: - LED_1 - LED_2 - LED_3 - … Return V alue none Description T urns off the specified LED. C671 1 DSK - LED_1 = USER_LED1 - LED_2 = USER_LED2 - [...]

LED_SUPPORT 7-4 Description T urns on the specified LED. C671 1 DSK - LED_1 = USER_LED1 - LED_2 = USER_LED2 - LED_3 = USER_LED3 - LED_ALL = all user LEDs Example If you want to turn on LED # 1 use: LED_on(LED_1); Compile time constant LED_SUPPORT Constant LED_SUPPORT Description Compile time constant that has a value of 1 if the board supports the [...]

A-1 Appendix A Glossary A AD535: The audio codec API module. Currently supported by the 671 1 DSK. address: The location of program code or data stored; an individually accessible memory location. A-law companding: See compress and expand (compand) . API: See application programming interface. API module: A set of API functions designed for a speci[...]

Glossary A-2 block: The three least significant bits of the program address. These corre- spond to the address within a fetch packet of the first instruction being addressed. BOARD: The BOARD-specific API Module. board support library (BSL): The BSL is a set of application programming interfaces (APIs) consisting of target side DSP code used to con[...]

Glossary A-3 Glossary clock cycle: A periodic or sequence of events based on the input from the external clock. clock modes: Options used by the clock generator to change the internal CP U clock frequency to a fraction or multiple of the frequency of the input clock signal. code: A set of instructions written to perform a task; a computer program o[...]

Glossary A-4 device ID: Configuration register that identifies each peripheral component interconnect (PCI). digital signal processor (DSP): A semiconductor that turns analog sig- nals— such as sound or light — into digital signals, which are discrete or discontinuous electrical impulses, so that they can be manipulated. DIP: The DIP Switches A[...]

Glossary A-5 Glossary external interrupt: A hardware interrupt triggered by a specific value on a pin. external memory interface (EMIF): Microprocessor hardware that is used to read to and write from off-chip memory . F fetch packet: A contiguous 8-word series of instructions fetched by the CPU and aligned on an 8-word boundary . flag: A binary sta[...]

Glossary A-6 indirect addressing: An addressing mode in which an address points to another pointer rather than to the actual data; this mode is prohibited in RISC architecture. instruction fetch packet: A group of up to eight instructions held in memory for execution by the CPU. internal interrupt: A hardware interrupt caused by an on-chip peripher[...]

Glossary A-7 Glossary little endian: An addressing protocol in which bytes are numbered from right to left within a word. More significant bytes in a word have higher-num- bered addresses. Endian ordering is specific to hardware and is deter- mined at reset. See also big endian . M µ -law companding: See compress and expand (compand) . maskable in[...]

Glossary A-8 P peripheral: A device connected to and usually controlled by a host device. program cache: A fast memory cache for storing program instructions al- lowing for quick execution. program memory: Memory accessed through the C6x ’ s program fetch in- terface. PWR: Power; see PWR module . PWR module: PWR is an API module that is used to c[...]

Glossary A-9 Glossary synchronous dynamic random-access memory (SDRAM): RAM whose contents is refreshed periodically so the data is not lost. T ransfer of data is at a fixed rate relative to the clock speed of the device. syntax: The grammatical and structural rules of a language. All higher-level programming languages possess a formal syntax. syst[...]

Index Index-1 Index A AD535 API module, 2-1 API constant, 2-5 AD535_SUPPORT , 2-16 API functions AD535_close, 2-5 AD535_config, 2-6 AD535_getMcbspHandle, 2-8 AD535_inGain, 2-10 AD535_micGain, 2-10 AD535_modifyReg, 2-1 1 AD535_open, 2-12 AD535_outGain, 2-13 AD535_powerDown, 2-13 AD535_read, 2-14 AD535_readReg, 2-14 AD535_reset, 2-16 AD535_write, 2-1[...]

Index Index-2 L LED API module, 7-1 API constant, 7-3 LED_SUPPORT , 7-4 API functions LED_off, 7-3 LED_on, 7-3 LED_toggle, 7-4 API summary table, 7-2 description, 7-2[...]