46 lines
2.1 KiB
Plaintext
46 lines
2.1 KiB
Plaintext
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NuttX-5.14
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The 61st release of NuttX, NuttX-5.14, was made on November 27,
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2010. This release includes multiple, important bugfixes as well
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as a new driver for the NXP LPC1766.
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This release corresponds with SVN release number: r3137
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Important bugfixes include:
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* Cortex-M3 Hard Fault. Fixed a hard fault problem that can occur
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if certain types of interrupts are pending at the time another
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interrupt returns. This problem has only been observed on the
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LPC1766 (returning from a SYSTICK interrupt with a pending
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Ethernet interrupt). However, it is assumed that all Cortex-M3
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ports could have this as a latent bug.
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* TCP/IP Sequence Number Bug. Corrected errors some important
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logic in the way that sequence numbers are managed when send()
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sends out packets before a previous packet has been acknowledged.
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Some of that send() logic was incompatible with logic in the
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uIP layer. Errors seen include: (1) The final final packet in
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a sequence of packets might be too large! In the THTTPD example,
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this might leave some garbage at the bottom of the display. Or
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(2) send() might hang with outstanding, unacknowledged data
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(and with no re-transmission requests). This was due to
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differences in sequence number handling in send() and in
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uip_tcpinput.c; uip_tcpinput.c thought (incorrectly) that all
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of the bytes were acknowledged; send.c knew that they were not.
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* One-Shot POSIX Timer Bug. Fixed an error in set-up of a one-shot
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POSIX timer. It was using the repetitive timer value (which
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is zero in the one-shot case), always resulting in a 10Ms timer!
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Found and fixed by Wilton Tong.
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Additional support has been included for the Olimex-LPC1766. Support
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for that board was added to NuttX 5.13. This release extends that
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support with an Ethernet driver. Verified configurations are now
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available for the NuttX OS test, for the NuttShell (NSH, see
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https://nuttx.apache.org/docs/latest/components/nsh/index.html),
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for the NuttX network test, and for the THTTPD webserver.
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(Additional USB configurations are in the release as well, but those
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have not yet been verified. Goals for NuttX-5.15 (and beyond) include:
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(1) Verified USB support, (2) SD card support, and (3) LCD support.
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