Potential issues on using the Hardware Real Time OS
Contents
1. Date May 28 2015 RENESAS TECHNICAL UPDATE 1753 Shimonumabe Nakahara ku Kawasaki shi Kanagawa 211 8668 Japan Renesas Electronics Corporation Product Document Category S stem S No TN RIN A0O1B E Rev 2 00 Information Title Potential issues on using the Hardware Real Time OS Category Technical Notification Lot No R IN32M3 Series User s Manual i R IN32M3 CL R18UZ0007EJ0202 R IN32M3 Series User s Manual R IN32M3 EC R18UZ0003EJ0301 Applicable S Reference R IN32M3 Series User s Manual ee following i Product All lots Document Peripheral Functions R IN32M3 CL R IN32M3 EC R18UZ0005EJ0601 R IN32M3 Series Programing Manual OS edition R IN32M3 EC R IN32M3 CL R18UZ0011EJ0400 We would like to inform updated content for issue and restriction from Rev 1 00 because the OS library libos a has been released in May 2015 We would like to inform about potential issues on using the Hardware Real Time OS of R IN32M3 Series as described below If you do not use Hardware Real Time OS feature or you don t use auto exec set_flg sig_sem service call by Hardware ISR or twai_flg service call with Hardware Real Time OS this notice can be ignored Applicable Product Product Type Model Marking Product Code R IN32M3 EC MC 10287F 1 MC 10287F1 HN4 A MC 10287F 1 HN4 M1 A R IN32M3 CL D60510F 1 UPD60510F1 HN4 A UPD60510F1 HN4 M1 A 2 Issue When Hard2. ER option option1 Limitation for CPU access area Hardware Real Time OS function and system service calls v Forbids that CPU accesses the following specified address area Data RAM area 0x2000_8000 0x2000_87FF 0x2004_ 8000 0x2004_87FF Bitband alias area 0x2210_0000 0x2210_FFFF 0x2290_0000 0x2290_FFFF CAN1 area 0x4004_ 8000 0x4004_87FF Bitband alias area 0x4290_0000 0x4290_FFFF option2 Limitation for Hardware Real Time OS function and system service calls v Do not use set_flg and sig_sem service calls by Hardware ISR v Do not use twai_flg service call 4 Revision Plan 1 Revised Device Renesas plans to revise the applicable products Real Time OS works without the restriction which shows in Section 3 Regarding update schedule please contact to Renesas sales or distributers RENES Page 2 of 2 a AS
3. ware Real Time OS feature is activated and specified embedded data RAM area is read or write Hardware Real Time OS might malfunction Cases case1 Condition Performs set_flg service call by Hardware ISR and specified address access by CPU at the same clock cycle Fault Eventflag is not set case2 Condition Performs sig_sem service call by Hardware ISR and specified address access by CPU at the same clock cycle Fault Semaphore counter is not updated c 2015 Renesas Electronics Corporation All rights reserved Page 1 of 2 RENESAS RENESAS TECHNICAL UPDATE TN RIN A001B E Date May 28 2015 case3 Condition Performs twai_flag service call and specified address access by bus master CPU at the same clock cycle Fault twai_flg service call doesn t return correct eventflag information zero will be value of p_flgptn variable Note 1 Data RAM area 0x2000_8400 0x2000_87FF 0x2004_8400 0x2004_87FF Bitband alias area 0x2210_8000 0x2210_FFFF 0x2290_8000 0x2290_FFFF CAN1 area 0x4004_ 8400 0x4004_87FF Bitband alias area 0x4290_8000 0x4290_FFFF 2 Data RAM area 0x2000_8000 0x2000_83FF 0x2004_8000 0x2004_83FF Bitband alias area 0x2210_0000 0x2210_7FFF 0x2290_0000 0x2290_7FFF CAN1 area 0x4004_ 8000 0x4004_83FF Bitband alias area 0x4290_0000 0x4290_7FFF 3 Restriction If you use Hardware Real Time OS feature on applicable product please follow EITH
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