Details
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Bug
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Status: Fixed
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High
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Resolution: Fixed
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TI Device Drivers
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TIDRIVERS-4787
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TIDRIVERS_5_30_00
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If the application must modify the IOCFG register, it must perform a byte-wise write to the 3 MSBs .
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PINCC26XX_setIoCfg() function has been updated to prevent potentially undefined behavior occurring on internal IO signals.
Description
Any 32-bit write to the IOCFG register which writes to the PORTID, WU_EN, or RTC_EN fields will trigger the SoC's internal finite state machine which could lead to undefined behavior. This trigger occurs even if the values of the bits are not changed. All the aforementioned bits are in the first byte of the IOCFG register (bits 0 - 7).
Only way to avoid potentially undefined behavior is to do byte-wise write to the 3 most-significant bytes of the IOCFG register.
This affects the PINCC26XX_setIoCfg() implementation as calls to this function may causes internal glitching on the IO lines and other undefined behavior.
