CONROLIB

Objective of presentation  CONRO Developer should be able to program a fully functional CONRO after this presentation

Outline of Presentation  The Basics: What is the new CONRO Hardware?  What is the new development environment?  Where can I get this software environment?  What is CONROLIB?  Discussion of all APIs  Writing your first program …very easy  Modifying the Makefile  How do I add my contribution to CONROLIB?  Why use static libaries?  Future Work on CONROLIB  Demo

The Basics: What is the new CONRO Hardware?  Atmega128 Low power MCU All peripherals on chip (ADC, Timers, UART) 4Mhz, 128Kb Program Flash, 4KB RAM  MICA2DOT = MCU + Wireless Chip + Serial Flash For Data Logging  Board under DOT -> IR LEDs / Transistor  Battery Powered

Main Functionalities of CONRO’s Hardware Communicate using Software UART and Infrared Control 2 Servo Motors Measure Infrared Intensity at each port Send Debug Info to a PC Host Control Each ports TX LED and Read Digital from Rx Wireless Communication

What is the new development environment? PC Host with Cross Compiler Serial Programmer CONRO Atmega128

What is the new development environment?...contd.  Cross Compiler is avr-gcc + avr-linker + avr-binutils  Both *nix & Windows environments available. C Code UISP/Avrdude Bin-Utils converts assembly to Intel hex file Avr-gcc CONRO

Where can I get this software environment?  Unix/Linux : avrtools.html avrtools.html Note:instructions are old download latest versions of gcc, avr-libc, binutils, uisp.  Windows Instructions are available with s/w  NOTE! : Must have permissions for accessing /dev/ttyS0 (unix) or COM1 in Windows

What is CONROLIB?  A precompiled static library with host of standard C APIS.  CONROLIB = libconro_lib.a + header files. That's all you need to program CONRO!  The library has API's for : Reading Sensor from each port Debug through printf to a host pc running hyperterminal(9600 8N1) in Software UART for inter CONRO communication Individual control of each port TX and reading the digital value of Each port RX. Controlling pitch and yaw servo

Discussion of all APIs  1 Header file for each oval functionality adc.h debugPrintf.h portControl.h servo.h uartsw.h

Discussion of all APIs  Uartsw (For Infrared Communication)  #include “uartsw.h”  int sendByte(uint8_t u08)  int receiveByte(void)  #define UARTSW_RX_BUFFER_SIZE 0x20

Discussion of all APIs  Servos  #include “servo.h”  initializeServos();  void controlServoNorth(uint16_t angle);  void controlServoSouth(uint16_t angle);

Discussion of all APIs  Controlling PORT LEDS(TX) and reading a digital value from RX  #include “portControl.h”  initializePorts();  void northPortTx(uint8_t status); //status =1 TX => ON status = 0 =>OFF.  uint8_t readNorthRx(void); //returns a HIGH or LOW

Discussion of all APIs  Reading ADC sensor: intensity of received IR on any RX port  #include “adc.h”  initializeAdc();  uint16_t readSensorNorth(void);

Discussion of all APIs  Using printf to send data to PC: Hyperterminal  #include “debugPrintf.h”  initializeDebug();  Printf(“Howdy CONRO\n\r”); OR  Printf(“value of angle is %d\n\r”,angle);

Writing your first program  Example :you want to move the servo  Make any directory say.. testConro  mkdir testConcro  cd testConro  tar xvzf CONRO.tar.gz  Vi/emacs demo.c

Writing your first program #include “servo.h” Int main(void) { initializeServos();//initiallize servo controlServoNorth(300);//servo middle return 1;//make sure u write return }

Writing your first program To clean testConro>$ make clean To compile testConro>$ make Switch on CONRO,Connect the programming cable testConro>$ make flash You’re done!

Modifying the Makefile  Currently SRCS = demo.c OBJS = demo.o  Change to SRCS = cfile1.c cfile2.c OBJS = cfile1.o cfile2.o

How do I add my contribution to CONROLIB?  U just made a cool *.o u want to add to libconro_lib.a  USE CVS! Do not overwrite the old library  Compile ure code to obj(-c option) do NOT link avr-gcc –mmcu=atmega128 –c blah.c ar qv libconro_lib.a blah.o ranlib libconro_lib.a  Make a header file with ure API in it. Put header file in includes dir and update libconro_lib.a

Why use static libaries?  Precompiled: Saves time  If a bug fix is found you only have to update 1 file !  Insulates you from hardware. Don’t worry about hardware dependant C code  Note: only relevant object code is linked

Future Work on CONROLIB  Modify APIs?  Wireless API  API code is stable according to me but bugs could still be lurking around. Report anything unusual to me  Fixed point Math Library :Speed and Accuracy

Demo  How To install Winavr?  How To use it?  Installing CONROLIB  Running a Program

HAVE FUN !