Dstc_ClearDreqenbBit() function in PDL 2.1.0 sets DREQENB register bit instead of clearing it - KBA218861

Version 2

    Version: **


    Translation - Japanese: PDL 2.1.0 の Dstc_ClearDreqenbBit() 関数が DREQENB レジスタビットをクリアせずにセットしてしまいます - KBA218861 - Community Translated (JA)



    The Dstc_ClearDreqenbBit() function in Peripheral Driver Library (PDL) 2.1.0 sets the DREQENB register bit instead of clearing it. The problem is reproducible on the FM0+ and FM4 family of devices when using the DSTC driver from PDL 2.1.0. Is there a workaround?



    There is a workaround, which requires manual PDL source modification. Open the file /drivers/dstc/dstc.c and find the Dstc_ClearDreqenbBit() function. Replace the following line:


    *(uint32_t*)(uint32_t)(((uint32_t)(&FM_DSTC->DREQENB0)) + ((4ul * (uint32_t)u8WordPos))) |= u32BitPosRelative;


    with the line:


    *(uint32_t*)(uint32_t)(((uint32_t)(&FM_DSTC->DREQENB0)) + ((4ul * (uint32_t)u8WordPos))) &= ~(u32BitPosRelative);


    This problem will be corrected in the next PDL 2.x release. Contact Cypress technical support (www.cypress.com/mycases) for possible firmware updates and help with using the DREQENB register.