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  15. Dec 07, 2017
    • Anthony Merlino's avatar
      Merged in antmerlino/nuttx/photon-timer (pull request #552) · 87291e00
      Anthony Merlino authored 
      

configs/photon: Adds BOARD_TIMn_FREQUENCY macros

Approved-by: default avatarGregory Nutt <gnutt@nuttx.org>
      87291e00
    • Anthony Merlino's avatar
      Merged in antmerlino/nuttx/sixlowpan-address-context (pull request #553) · cc536ba6
      Anthony Merlino authored 
      

sixlowpan: Completes configuration options for specifying preloaded address contexts for compression

Approved-by: default avatarGregory Nutt <gnutt@nuttx.org>
      cc536ba6
    • Masayuki Ishikawa's avatar
      Merged in masayuki2009/nuttx.nuttx/irq_spinlock (pull request #550) · 6150299f
      Masayuki Ishikawa authored 
      

SMP: Introduce spin_lock_irqsave() and spin_unlock_irqrestore()

These APIs are simplified version of enter_critical_section() and
leave_critical_section() to protect data (e.g. registers) in SMP mode.
By using these APIs inside drivers, performace will be improved.

Signed-off-by: default avatarMasayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

Approved-by: default avatarGregory Nutt <gnutt@nuttx.org>
      6150299f
    • Gregory Nutt's avatar
      This adds basic architectural support for the LPC546xx family and includes... · 8bc90a18
      Gregory Nutt authored 
      This adds basic architectural support for the LPC546xx family and includes support for the LPCXpresso-LPC54628 board.  The basic NSH port is almost complete... still lacking GPIO support and LED support.  There are still no significant drivers available.

Squashed commit of the following:

    arch/arm/src/lpc54xx:  Finish off some missing logic.  Complete now execpt for GPIO and LED support.
    arch/arm/src/lpc54xx:  Add lpc54_clrpend.c
    arch/arm/src/lpc54xx:  Serial driver is complete and compiles.
    arch/arm/src/lpc54xx:  Add beginning of a serial driver (still missing some logic)
    arch/arm/src/lpc54xx:  Fleshes out low level USART intialization.
    arch/arm/src/lpc546xx/Kconfig: Add hooks to integrate with common seril upper half.
    arch/arm/src/lpc54xx:  Beginning of USART console support.
    arch/arm/src/lpc54xx: Completes very basic clock configuration.
    arch/arm/src/lpc54xx:  Add clocking logic (still not complete)
    arch/arm/src/lpc54xx:  Beginning of PLL configuration logic.
    arch/arm/src/lpc54xx:  Fix a few things from first compile attempt.  Compilation cannot work until I at least finish the clock configuration logic.
    arch/arm/src/lpc54xx: Addes some SysTick logic.
    arch/arm/src/lpc54xx:  Completes basic startup logic (sans clock configuration) and interrupt configuration.
     arch/arm/src/lpc54xx:  Add generic ARMv7-M start-up logic (needs LPC54628 customizations); add emtpy file that will eventually hold the clock configuration logic.
    arch/arm/src/lpc54xx:  Add (incomplete) SYSCON register definition header file.
    arch/arm/src/lpc54xx:  Add FLEXCOMM header file.
    arch/arm/src/lpc54xx:  Bring in tickless clock logic from LPC43; configs/lpcxpresso-lpc54628: mount procfs if enabled.
    arch/arm/src/lpc54xx: Add RIT clock definitions; add SysTick initialization (not finished)
    LPC54xx and LPCXpresso-LPC54628: add more boilerplate files and stubbed out files.
    arch/arm/src/lpc54xx:  Add (incomplete) USART header file.
    Add another condition to a Kconfig; refresh a defconfig.
    arch/arm/src/lpc54xx/chip: Add LPC54628 memory map header files.
    configs/lpcxpresso-lpc54628:  Add basic build files for the LPCXpresso-LPC54628
    arch/: Basic build directory structure for the LPC54628
      8bc90a18
    • Gregory Nutt's avatar
      Triva fix of typos in comments. · ba64499b
      Gregory Nutt authored
      ba64499b
    • Jussi Kivilinna's avatar
      From c73dd8973accd312ca7675fde044df80e9cc62d5 Mon Sep 17 00:00:00 2001 · ce88bc21
      Jussi Kivilinna authored 
      From: Jussi Kivilinna <jussi.kivilinna@haltian.com>
Date: Thu, 7 Dec 2017 13:00:14 +0200
Subject: [PATCH] drivers/pipes: poll: fix off-by-one error in calculation of bytes in the buffer

Buffer calculation in pipe poll setup is off-by-one when read indexis larger than write index. This causes poll() not getting POLLINwhen buffer has one byte as calculation gives zero bytes in buffer.

Reproducible with:

  {
    char buf[8] = { 0, };
    int fds[2];
    struct pollfd in_pfd;

    pipe2(fds, 8);

    write(fds[1], buf, 7);
    read(fds[0], buf, 7);
    write(fds[1], buf, 1);

    in_pfd.fd = fds[0];
    in_pfd.events = POLLIN;
    ret = poll(&in_pfd, 1, -1); // pipe bug => stuck waiting
    assert(ret == 1);
  }
      ce88bc21
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