ADS1299 read problem

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Other Parts Discussed in Thread: TMS320C5515, ADS1298, ADS1258

TI 工程师你们好，我最近想做个脑电放大器，先是买了ADS1299EVM开发板,因MMB0当时没原理图（现在已找到），且配套的软件是用LABVIEW 开发，我想用C语言开发，就在你们网上看到用TMS320C5515控制的ADS1298实验平台，又因ADS1299和ADS1298配置相似，所以我就又买了一套TMS320C5515evm开发套件，刚好该套件有ADS1299子板的接口，我查了手册接口完全兼容，所以着手用TMS320C5515控制ADS1299，我用了C5515的CSL库，在SPI控制EEPROM的例子上修改。用GPIO控制RESET ,START和CS,写寄存器后又读寄存器，读寄存器的结果完全正确，但按照ADS1299手册最后配置的流程图设计程序，但发出START指令后（start管脚一直拉低），用CSL的SPI_read函数读数时，最多只能读4个字节，如果超过5个字节，则/DRDY管脚被一直拉高，我怀疑是中断保护，怎样才能正确读27个字节（216位），请工程师们帮忙解决一下，谢谢！！！

over 11 years ago

0 Sivaraj Kuppuraj over 11 years ago

TI__Mastermind 35645 points

Hi,

Could you please type your query in general English language? We could n't understand your language script?

Please help us to address your query.

Thanks & regards,

Sivaraj K

0 KRaviS over 11 years ago

TI__Intellectual 1530 points

Did you by any chance check the software package that TI provides for the C5515-ADS1298 ECG MDK Application Unit that you mention? Would you have checked the following:

http://www.ti.com/lit/an/sprabj1/sprabj1.pdf - ECG Implementation on the TMS320C5515 DSP Medical Development Kit (MDK) with the ADS1298 ECG-FE Application report.
Section 4 here deals with all the related Software Installation links and procedure.

https://code.google.com/p/c5505-ezdsp/ and the ADS1258 ECG MDK link under the C5515 column -> This includes the CodeComposerStudio-based C-language project, the ECG PC-based User Interface Software

Best Regards.

0 sonia lee over 10 years ago

Intellectual 465 points

您好，我最近也在做脑电，mmb0的原理图相关资料方面发一份吗，多谢, ads1298

0 Steve Tsang over 10 years ago in reply to sonia lee

TI__Mastermind 23785 points

Please use English to post to this forum for the team to provide assist.

Second, this team supports the C5000 product family. However, TI's www.ti.com iss a very user friendly system which you can search to find all related information. As such, I searched using "MMB0" and found these:

Q: Where can I find the schematics for the MMB0 revision C and revision D?

A: Please use the schematic that matches the MMB0 revision that you are using. The revision can be found in silkscreen on the MMB0 hardware. The schematics are located at the below web address.

REV C: ftp://ftp.ti.com/pub/data_acquisition/ADCPro/Support/MMB0_Sch_RevC.PDF

REV D: ftp://ftp.ti.com/pub/data_acquisition/ADCPro/Support/MMB0_Sch_RevD.PDF

Hope this help.

Regards.

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ADS1299 read problem