LPC Microcontrollers中的主题 LPC4337 SD/MMC EXT_CSD problem https://community.nxp.com/t5/LPC-Microcontrollers/LPC4337-SD-MMC-EXT-CSD-problem/m-p/687450#M27706 <HTML><HEAD></HEAD><BODY><P>LPC4337 SD/MMC problem: Can't read EXT_CSD register. Other non-data commands are working (CMD0, CMD1, CMD2, CMD3,,,CMD7). After I fixed a CLKDIV bug so I could run the acquire process at 400kHz things started to work. I cannot read the EXT_CSD though. I'm getting a data timeout. How can I try it without using DMA? (or how can I get DMA to work?)</P><P><STRONG>Original Attachment has been moved to: <A _jive_internal="true" href="https://community.nxp.com/docs/DOC-337930">fw_dbg.zip</A></STRONG></P></BODY></HTML> Fri, 07 Jul 2017 23:16:38 GMT rickrigby 2017-07-07T23:16:38Z LPC4337 SD/MMC EXT_CSD problem https://community.nxp.com/t5/LPC-Microcontrollers/LPC4337-SD-MMC-EXT-CSD-problem/m-p/687450#M27706 <HTML><HEAD></HEAD><BODY><P>LPC4337 SD/MMC problem: Can't read EXT_CSD register. Other non-data commands are working (CMD0, CMD1, CMD2, CMD3,,,CMD7). After I fixed a CLKDIV bug so I could run the acquire process at 400kHz things started to work. I cannot read the EXT_CSD though. I'm getting a data timeout. How can I try it without using DMA? (or how can I get DMA to work?)</P><P><STRONG>Original Attachment has been moved to: <A _jive_internal="true" href="https://community.nxp.com/docs/DOC-337930">fw_dbg.zip</A></STRONG></P></BODY></HTML> Fri, 07 Jul 2017 23:16:38 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC4337-SD-MMC-EXT-CSD-problem/m-p/687450#M27706 rickrigby 2017-07-07T23:16:38Z Re: LPC4337 SD/MMC EXT_CSD problem https://community.nxp.com/t5/LPC-Microcontrollers/LPC4337-SD-MMC-EXT-CSD-problem/m-p/687451#M27707 <HTML><HEAD></HEAD><BODY><P>Hi Rick,</P><P></P><P>As mentioned in the support case you have solved this, maybe you can share your working project so other can benefit from it.</P><P></P><P>Thanks in advance!</P><P></P><P>Best Regards,<BR />Carlos Mendoza<BR />Technical Support Engineer</P></BODY></HTML> Fri, 21 Jul 2017 16:56:14 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC4337-SD-MMC-EXT-CSD-problem/m-p/687451#M27707 Carlos_Mendoza 2017-07-21T16:56:14Z