LPC Microcontrollers中的主题 ISP over RS-485? https://community.nxp.com/t5/LPC-Microcontrollers/ISP-over-RS-485/m-p/513769#M342 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by jdupre on Tue Aug 04 12:56:47 MST 2015</STRONG><BR /><SPAN>Is it possible to use ISP mode at boot if an RS-485 transceiver is on the ISP UART?&nbsp; If so, how does one control the direction (TxEnable) so an autobaud response can be sent?</SPAN><BR /><BR /><SPAN>The LPC2xxx has a means to control this via the reset and ISP entry pins.&nbsp; But the LPC15xx has two ISP entry pins and I find no mention of the ISP code being able to control RTS in the manual.</SPAN><BR /><BR /><SPAN>- Joe</SPAN><BR /></BODY></HTML> Wed, 15 Jun 2016 17:08:56 GMT lpcware 2016-06-15T17:08:56Z ISP over RS-485? https://community.nxp.com/t5/LPC-Microcontrollers/ISP-over-RS-485/m-p/513769#M342 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by jdupre on Tue Aug 04 12:56:47 MST 2015</STRONG><BR /><SPAN>Is it possible to use ISP mode at boot if an RS-485 transceiver is on the ISP UART?&nbsp; If so, how does one control the direction (TxEnable) so an autobaud response can be sent?</SPAN><BR /><BR /><SPAN>The LPC2xxx has a means to control this via the reset and ISP entry pins.&nbsp; But the LPC15xx has two ISP entry pins and I find no mention of the ISP code being able to control RTS in the manual.</SPAN><BR /><BR /><SPAN>- Joe</SPAN><BR /></BODY></HTML> Wed, 15 Jun 2016 17:08:56 GMT https://community.nxp.com/t5/LPC-Microcontrollers/ISP-over-RS-485/m-p/513769#M342 lpcware 2016-06-15T17:08:56Z Re: ISP over RS-485? https://community.nxp.com/t5/LPC-Microcontrollers/ISP-over-RS-485/m-p/513770#M343 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by jdupre on Thu Aug 13 21:56:04 MST 2015</STRONG><BR /><SPAN>No comment?&nbsp; Is it impossible for the ISP ROM &amp; hardware in the LPC15xx to signal TxEnable for an RS-485 transceiver?</SPAN><BR /><BR /><SPAN>Looks like I can do it with IAP, but it sure would be better to have this possible with the ISP interface.</SPAN></BODY></HTML> Wed, 15 Jun 2016 17:08:57 GMT https://community.nxp.com/t5/LPC-Microcontrollers/ISP-over-RS-485/m-p/513770#M343 lpcware 2016-06-15T17:08:57Z