Introduction to uCOS II v2 6 m4

Introduction to uCOS-II V2.6 About SwiftACT • A Technology services startup company o Under establishment • Areas of specialties: o o Mobile telecommunication services development Embedded systems development • Types of services: o o o o Consultation Managed services Sourcing Training Amr Ali Abdel-Naby@2010 Introduction to uCOS-II V2.6 About Me • Graduated 2004 o ECE, ASU: yrs distinction • 5+ years in embedded systems development o SDLC, Apps, MW, DD, Porting, • 3+ years in SW engineering o PSP, CMMI, Systematic reuse, • 3+ years in SW testing o IBM certified, ISTQB certified, Amr Ali Abdel-Naby@2010 Introduction to uCOS-II V2.6 Copyright • Materials in this course is the property of Amr Ali Abdel-Naby • Reproduction or transmission of the materials in any manner without the copyright owner permission is a law violation Amr Ali Abdel-Naby@2010 Introduction to uCOS-II V2.6 Course References • MicroC/OS-II The Real-Time Kernel, 2nd Edition, by Jean J Labrosse Amr Ali Abdel-Naby@2010 Introduction to uCOS-II V2.6 Outline • • • • • • • • • • Introduction to µC/OS-II Kernel Structure Task Management Time Management Semaphore Management Mutual Exclusion Semaphores Event Flag Management Message Mailbox Management Message Queue Management Memory Management Amr Ali Abdel-Naby@2010 Introduction to uCOS-II V2.6 Outline • • • • • • • • • • Introduction to µC/OS-II Kernel Structure Task Management Time Management Semaphore Management Mutual Exclusion Semaphores Event Flag Management Message Mailbox Management Message Queue Management Memory Management Amr Ali Abdel-Naby@2010 Introduction to uCOS-II V2.6 Time Management APIs • Available time operations are: o o o Delaying a task Resuming a delayed task System time getting & setting Amr Ali Abdel-Naby@2010 Introduction to uCOS-II V2.6 Delaying a Task, OSTimeDly void OSTimeDly (INT16U ticks) • ticks: The time delay that the task will be suspended in number of clock ticks 10ms time OSTickISR() All HPT OSTimeDly(1) LPT 5ms Amr Ali Abdel-Naby@2010 Introduction to uCOS-II V2.6 Delaying a Task, OSTimeDlyHMSM INT8U OSTimeDlyHMSM (INT8U hours, INT8U minutes, INT8U seconds, INT16U milli) • • • • • hours: The number of hours that the task will be delayed minutes: The number of minutes seconds: The number of seconds milli: The number of milliseconds Return value: o o o No error Zero delay Invalid minutes, seconds, & milli seconds Amr Ali Abdel-Naby@2010 Introduction to uCOS-II V2.6 Resuming a Delayed Task, OSTimeDlyResume INT8U OSTimeDlyResume (INT8U prio) • • prio: Specifies the priority of the task to resume Return value: o o o o No error Invalid priority Task is not delayed Task does not exist Amr Ali Abdel-Naby@2010 Introduction to uCOS-II V2.6 System Time, OSTimeSet void OSTimeSet (INT32U ticks) • ticks: Specifies the new value that OSTime needs to take Amr Ali Abdel-Naby@2010 Introduction to uCOS-II V2.6 System Time, OSTimeGet INT32U OSTimeGet (void) • Return value: o The current value of OSTime Amr Ali Abdel-Naby@2010 Introduction to uCOS-II V2.6 [...]... • prio: Specifies the priority of the task to resume Return value: o o o o No error Invalid priority Task is not delayed Task does not exist Amr Ali Abdel-Naby@2010 Introduction to uCOS- II V2. 6 System Time, OSTimeSet void OSTimeSet (INT32U ticks) • ticks: Specifies the new value that OSTime needs to take Amr Ali Abdel-Naby@2010 Introduction to uCOS- II V2. 6 System Time, OSTimeGet INT32U OSTimeGet (void)... OSTime needs to take Amr Ali Abdel-Naby@2010 Introduction to uCOS- II V2. 6 System Time, OSTimeGet INT32U OSTimeGet (void) • Return value: o The current value of OSTime Amr Ali Abdel-Naby@2010 Introduction to uCOS- II V2. 6