MQX Software Solutions中的主题 lwIP project that was working in KDS 2.0 with MQX and PEx no longer works in KDS 3.0

lwIP project that was working in KDS 2.0 with MQX and PEx no longer works in KDS 3.0

dave408 — Thu, 21 May 2015 14:38:15 GMT

I had a very difficult time getting my lwIP application to work. It took a little bit of luck in addition to great help from Marek Neuzil in my thread Assistance needed with lwIP + PEx + KSDK to get it actually working.

The problem is, with the release of KDS 3.0 and KSDK 1.2, I had to create my project from scratch, and after following what I believe to be the same steps, my application does not work again.

The basic steps include:

adding MQX and setting it to MQX Standard
disabling DbgCs1 and adding a new fsl_uart shared component to MQX
assigning fsl_uart to a random UART I don't need (as I am using semihosting)
assigning pins to the ENET component in pin_init
setting the RMII_MDIO pin to open drain, pulled up, and enabled
adding the necessary header file include directories
adding a link to fsl_phy_driver.c to my Source folder

(hopefully I didn't miss anything above)

Even after going through all of those steps again, my lwIP application runs and waits for an incoming connection, verified by single stepping through each line and checking for unhandled returned errors. It all checks out fine, but I still cannot ping or connect. However, the lwip demo application that comes with KSDK 1.2 works just fine.

Can anyone offer any assistance or advise? I've also attached my sample project here. Thank you!

Original Attachment has been moved to: KDS3_lwip_mqx_pex_test.zip

Re: lwIP project that was working in KDS 2.0 with MQX and PEx no longer works in KDS 3.0

dave408 — Tue, 26 May 2015 13:48:36 GMT

MarekNeuzil by any chance would you be able to look at my project and see if there's anything missing this time around? This is a port of my lwIP / KDS2 / KSDK 1.1 project that was working. Thank you!

Re: lwIP project that was working in KDS 2.0 with MQX and PEx no longer works in KDS 3.0

dave408 — Sat, 06 Jun 2015 16:24:15 GMT

I'm closing this question for now. I'm not 100% sure of what the issue was, but the hardfault I was originally encountering was solved by increasing the TCP task's stack size. I would love to learn how to debug this properly, rather than guessing at solutions and being happy when everything starts working.