NOTICE - This software / tool has been discontinued. Please contact technical support with any questions.
This product is a real-time operating system (real-time OS) that is an implementation of the μITRON4.0 specification. μITRON is the predominant real-time OS for embedded systems in Japan. Its low resource requirements, outstanding real-time performance, and broad range of service calls make it very suitable for embedded systems requiring true real-time and multi-tasking capabilities.
In addition, its high degree of compatibility with the compiler package from Renesas Electronics and multitasking debugging on the IDE will help you greatly reduce development times and get your products to market more quickly.
Latest Ver.: V.2.03 Release 00
Released: Nov 01, 2011
Details of upgrade (See Tool News)
Operating Environment
Agreement Details
SH-4, SH-4A
*MMU (Memory Management Unit) is not supported.
The HI7750/4 kernel consists of the following modules. Each module is provided by functions (service calls) .
(Time takes for a target task to be executed after the wup_tas is issued.): | ||
---|---|---|
Specifications/Functions: | ・Supports the following functions including uITRON4.0 spec-compliant standard profile. ・Service calls for dynamic object creation(cre_???, acre_???) and deletion(del_???) ・Mutex (TA_CEIL attribute only) ・Message buffer ・Variable-length memory pool ・Alarm handler ・Over handler ・The following are the Renesas-specific functions ・Task-attached event flag ・Cache support function | |
Scheduling types: | Priority basis type / Event-driven type | |
Target CPU: | SH-4, SH-4A *MMU is not supported. | |
Service call number: | 152 (Count xxx_yyy plus ixxx_yyy as one) | |
Maximum object number: | 1023 (Only the cycle handler and the alarm handler have 15 each) A maximum value can be selected with the configurator | |
Maximum priority number: | 255, A maximum value can be selected with the configurator | |
Application operating mode: | All application programs are operated in privileged mode | |
Performance | 0.45 microseconds (SH7785, 600MHz, cache enabled) | |
Kernel code size: | From 7.5K bytes to 46K bytes | |
Kernel RAM usage per task: | Data:64 bytes Stack: 196 bytes |
Provided items | Explanation | Note |
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Kernel source program | Kernel source program | Provided only with mass- production licenses which include source code. |
Kernel library | ・Kernel library for system building ・Cache support library | Compliant with big/little endian |
Standard header files | ・ITRON specification common definition files ・Kernel specification definition files ・Other definition files | Header files are provided both in Assembler and C languages |
Configurator | To configure a construction parameter | — |
Various sample programs | ・CPU initialization routine assembler source ・CPU initialization routine C source ・Exception enter/exit processing assembler source ・Section initialization processing C source ・Section information definition file ・Undefined interrupt detailed information acquisition process source ・System down routine source ・Timer driver source | — |
Workspace for construction | ・HEW workspace for system building ・Project file for separate linkage ・Project file for whole linkage | — |
Manual | HI7000/4 series user's manual | — |