Hariharan Veerappan
System Software Developer
About me
Having 14+ years of experience in complete end-to-end embedded software design & development includes,
• Embedded Linux Software System Design & Development
• Development of Embedded Linux / Android Device Drivers
• Protocol Stack & Telecommunication Standards Implementation
• Embedded Firmware Design, Development and testing
• Device driver development for Windows XP, WinCE, Windows 7 platform
• BSP, Device Driver, Application development based on VxWorks platform
• Professional Trainer of Embedded Linux, Device Drivers, Firmware Programming.
Embedded Systems
Networks Processors : Broadcom Apollo, Trident 2, MPC8360E, MPC8568E, AR7100.
Multi Media Processors : Nvidia TK1, NXP i.MX series, S3C2440A, PNX8532, ST5189.
Intel Processors : Baytrail, Sky Lake, Apollo Lake, Haswell, Celeron
Programming Language : C, C++, and ARM Assembly.
Micro Controller : Kinetis, STM32, nRF52xxx, TI Tiva Series, ATMEL AVR, LPC2136.
ARM Bus Interfaces : AMBA, AXI, AHB, AHB Lite, APB,
Operating Systems : Embedded Linux, Windows, QNX, VxWorks
RTOS : ThreadX, FreeRTOS, mBED, uCLinux, mynewt.
Micro Code : Trident, Wintegra, Freescale Quicc Engine.
BSP Porting & Development
High Speed Inteconnect : PCI, PCIe 3.0, USB 3.0, SDIO.
Memory Interfaces : DDR3, DDR2, Mobile DDR, PSRAM
Audio / Voice Interfaces : I2S, AC97, TDM.
Low speed interconnect : SPI, USART, I2C.
Ethernet PHY interface : MII, RMII, RGMII, XAUI.
Display Interface : HDMI, DVI, LVDS, Parallel LCD.
Camera Interface : MIPI-CSI2, Parallel CSI, USB.
Bootloader : U-Boot, Grub, Red-Boot
Android : 7.0 & below
Open Source
Linux Kernel : Linux 4.x, 3.x 2.6.x, 2.4.
Linux Device Drivers : Character, PCI, Ethernet, Network, Display, Video V4L2 device drivers.
Boot Loaders : U-Boot ( I.MX, MPC8360, S3C2440 ), Red Boot ( I.MX31, I.MX27 )
Open Source Framework : Android, Machina IoT, Asterisk, Freeswitch, OPIE Framework, Linux Streams.
Software Version Control : Git, SVN, CVS, IBM Clear Case.
Telecom Domain
Line Interfaces : FXS, FXO, T1 / E1, OC3 / STM-1.
Telecom Signaling standards : ISDN-PRI, FXS and FXO.
SS7 Line Interfaces : Low Speed Line ( MTP2 ), High Speed Line ( ATM ).
SS7 Signaling Standards : MTP, ISUP, SCCP, TCAP, SAAL, SSCOP, SSCF.
SS7 IP Signaling standard : SCTP, M2UA, M3UA, BSSMAP, DTAP.
L3 Protocols Known : TCP/IP, SIP, RTP, RTCP, MGCP, VLAN.
GSM Network Interface : GSM A Interface ( BSC – MSC ).
Video Telephony : H-324M, MPEG4 H.264, H.263
Software Stack Development
USB Device : USB 3 Vision, USB Video Class, USB HID.
PCIe Device : PCIe Data Acquisition Device, Ethernet, Video Capture, Vision
Telecomm : PTPv2 (IEEE1588), SyncE, MTP2 Stack with Freescale QE, Y.1731
Networking : VLAN, MPLS, UDP, MEF8, OSPF.
Bluetooth : HCI-H5 (Three-Wire UART), BLE.
Radio Interface : Digital Mobile Radio, ZigBee, 6LowPAN.
Internet of Things : Smart Lighting, Smart Home
Application Development
Linux GUI Frameworks : Qt, GTK, GTKMM, JAVA
Windows GUI Frameworks: VC++, C#, VB.Net