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So far john@pebblebay.com has created 30 blog entries.

RTOS Clause 45 PHY support

2021-07-13T17:42:28+01:00July 13, 2021|Blog|

A tale of two drivers In the last year two customers asked us to add support for a new IEEE 802.3 Clause 45 PHY for use with a network interface in their existing system. One customer was a QNX user, the other was a VxWorks user. These RTOSes take a different approach to network interface management, which dictated

Running VxWorks 7 on the Nitrogen8M SBC

2020-08-03T10:57:00+01:00July 4, 2020|Blog|

In this short article I'll look at how the support for modern system-on-chip devices in Wind River's VxWorks 7 real-time operating system enables developers to get a kernel running a new board is a very short space of time. Why use the Nitrogen8M SBC? The Boundary Devices Nitrogen8M SBC is a great development board we've

QNX PTP pulse per second output on the Intel i210

2020-06-01T09:32:48+01:00April 21, 2020|Blog|

A requirement for the QNX network driver we recently wrote was to add support for outputting a pulse-per-second signal, similar to the Linux PTP_PEROUT_REQUEST ioctl. We added support to the driver by creating a new IOCTL command and a simple utility program to issue the command to enable or disable the PPS output. This is

QNX network driver custom ioctls

2020-06-01T09:32:03+01:00April 21, 2020|Blog|

Learn how to add your own custom commands to your QNX network driver using lessons learned from a real project described below. QNX defines a set of IOCTL commands that a driver must implement in order to support PTP. These are defined in usr/include/netdrvr/ptp.h.  #define PTP_GET_RX_TIMESTAMP    0x100  /* get RX timestamp */ #define PTP_GET_TX_TIMESTAMP    0x101  /* get TX timestamp */ #define PTP_GET_TIME            0x102  /* get

QNX Network Driver Development

2020-01-06T20:06:56+00:00November 21, 2019|Blog|

Network driver development is hard Writing network drivers is a tricky business as anyone who has ever tried it will tell you. Or you are talking to Bill Joy.  My experience has been on a various RTOSes but mostly on VxWorks. Recently, I wrote a network driver for a new gigabit Ethernet controller for QNX

VxWorks 7 VxBus device-specific parameters

2019-10-06T20:08:50+01:00October 1, 2019|Blog|

Using VxWorks 7 VxBus device-specific parameters Add flexibility to your driver configuration using device-specific parameters. A couple of years ago we developed a VxWorks 7 BSP for the Renesas R-Car H3 SIP evaluation board. This included developing drivers for the main SoC interfaces: serial, Ethernet, MMC, I2C, GPIO and PCI Express.  I wrote the PCI

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