TMS320F28335/F28334/F28332 DSPs Flash API V2.10用户指南：定制编程与更新

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本资源是一份关于TMS320F28335、28334和28332 DSP系列的Flash API使用手册，专为定制针对这些器件的编程解决方案设计。该文档详细介绍了TMS320F28335 Flash API V2.10 (Flash28335_API_V210.lib)，TMS320F28334 Flash API V2.10 (Flash28334_API_V210.lib)，以及TMS320F28332 Flash API V2.10 (Flash28332_API_V210.lib)。这些API适用于2008年8月14日的Release版本，其主要功能包括对TMS320F28335、28334和28332系列处理器的在线闪存操作，如程序加载、更新和管理。文档发布日期为2008年8月14日，并在2010年7月2日进行了更新，以反映当时ControlSUITE目录结构的变化。这份文档包含了重要的免责声明，指出Texas Instruments (TI)保留了对提供的API进行更新或修改的权利，包括API的功能行为、性能优化和新功能的添加。用户有责任检查是否有针对这些API的后续更新，并确保他们使用的API版本与他们的TMS320F28335、28334或28332 DSP型号兼容。关键知识点包括： 1. **API库**: Flash API V2.10版本适用于三个不同的DSP型号：TMS320F28335、TMS320F28334和TMS320F28332，每个都有独立的库文件。 2. **功能应用**: 用户可以利用这些API实现定制的编程解决方案，包括闪存操作，如程序加载、擦除和写入。 3. **版本更新**: 2008年8月14日的初始版本，以及随后的2010年更新，意味着开发者需要关注最新的API版本以获得最佳性能和功能。 4. **责任声明**：用户在使用这些API时需注意，TI保留修改权，并强调用户有责任及时检查并采用最新版本以确保与硬件的兼容性和性能。 5. **目录结构变化**：更新反映了ControlSUITE目录结构的变化，这可能影响到API的调用方式和组织。 6. **兼容性注意事项**: 用户需要根据自己的TMS320F2833x DSP型号选择相应的API，确保软件与硬件的兼容性。这份文档是开发人员在使用TMS320F2833x系列DSP进行在线升级和定制编程时的重要参考资料，提供了API的使用方法、更新策略以及与硬件兼容性的指导。

TMS320F2833x Flash API

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4. Example Programs

An example program is included with each API. There is one example per device. In a typical installation, the

examples are located in the following directories:

Code Composer Studio V4 Projects:

 F28335: C:\ti\controlSUITE\libs\utilities\flash_api\28332\v210\example_ccsv4

 F28334: C:\ti\controlSUITE\libs\utilities\flash_api\28334\v210\example_ccsv4

 F28332: C:\ti\controlSUITE\libs\utilities\flash_api\28335\v210\example_ccsv4

Code Composer Studio V3.3 Projects

 F28335: C:\ti\controlSUITE\libs\utilities\flash_api\28332\v210\example

 F28334: C:\ti\controlSUITE\libs\utilities\flash_api\28334\v210\example

 F28332: C:\ti\controlSUITE\libs\utilities\flash_api\28335\v210\example

These examples demonstrate the following:

 Required software setup before calling the API (setting the PLL, checking for limp mode etc.)

 How to copy the API from flash into SARAM for execution.

 How to call the API functions.

The steps taken by the example are outlined in the API checklist in section 5 and described in detail in the

remainder of this document. The example program is setup to be stored in the flash and the appropriate code

and constants are copied to SARAM for execution. You must first build the application and then program it into

the flash using an available programmer such as SDFlash available from Spectrum Digital Inc.

(www.spectrumdigital.com) or the Code Composer Plug-in. Additional programmers from 3

parties may be

available, please contact TI for details.

To step through the code, use Code Composer Studio to load the symbols from the .out file (File->Load

Symbols).

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5. Flash API Checklist

Integration of the Flash APIs into user software requires that the system designer implement operations to

satisfy several key requirements. The following checklist gives an overview of the steps required to use the

API. These steps are further discussed in detail in the reference section indicated. This checklist applies to all

of the F2833x Flash APIs.

Before using the API, do the following:

Step

Description

Reference

1 Modify Flash2833x_API_Config.h for your target operating conditions. Section 6

2 Include Flash2833x_API_Library.h in your source code. Section 7

3 Add the proper Flash API library to your project.

When using the Flash API, build your code with the large memory model.

The API Library is built in 28x Object code (OBJMODE = 1, AMODE = 1)

Section 8

In your application, before calling any Flash API functions do the following:

Step

Description

Reference

4 Initialize the PLL control register (PLLCR) and wait for the PLL to lock. Section 9

5 Make sure the PLL is not running in limp mode. If the PLL is in limp mode, do

not call any of the API functions as the device will not be running at the proper

frequency.

Section 10

6 Optional: The API must execute from internal SARAM. If the API is to be copied

from flash/OTP into internal SARAM memory then follow the instructions in this

section.

Section 11

7 Initialize the 32-bit global variable Flash_CPUScaleFactor Section 12

8 Initialize the global function pointer Flash_CallbackPtr to point to the

application’s callback function. Alternatively set the pointer to NULL.

Section 13

9 Optional: Disable global interrupts before calling an API function. Section 14

10 Understand the API restrictions detailed in this section before making any API

calls.

Section 15

11 Optional: Run the frequency toggle test to confirm proper frequency

configuration of the Flash API. Note: The ToggleTest function will execute

forever. You must halt the processor to stop this test.

Section 16

12 Optional: Unlock the code security module (CSM). Section 17

13 Call the Flash API Functions described in the API Reference Section 18

The called flash API function will do the following:

 The watchdog timer is disabled. (Section 15).

 Checks the CLASSID/PARTID (memory location 0x0882/0x380090) register to make sure the part is the

correct device

 Checks the contents of 0x3FFFB9 in the boot ROM for API version vs. silicon revision compatibility.

 Performs the called operation and:

o Disables and restores global interrupts (via INTM, DBGM, XNMICR) around time critical code

segments. (Section 14).

o Invokes the callback function if Flash_CallbackPtr is not NULL.

 Returns success or an error code. These are defined in F2833x_API_Library.h (Section 18.11)

The user’s code should then do the following:

Step

Description

Refere

nce

14 Check the return status against the error codes. Section 18.11

15 Optional: Re-enable the watchdog timer.

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