I am using QSPI of nRF52480 with freqency 2M Hz. Now I want to reduce to 1M Hz,
but QSPI_CONFIG_FREQUENCY min value is 15
// <o> QSPI_CONFIG_FREQUENCY - Frequency divider.
// <0=> 32MHz/1
// <1=> 32MHz/2
// <2=> 32MHz/3
// <3=> 32MHz/4
// <4=> 32MHz/5
// <5=> 32MHz/6
// <6=> 32MHz/7
// <7=> 32MHz/8
// <8=> 32MHz/9
// <9=> 32MHz/10
// <10=> 32MHz/11
// <11=> 32MHz/12
// <12=> 32MHz/13
// <13=> 32MHz/14
// <14=> 32MHz/15
// <15=> 32MHz/16
#ifndef QSPI_CONFIG_FREQUENCY
#define QSPI_CONFIG_FREQUENCY 15
#endif
I see QSPI_IFCONFIG1_SCKFREQ_Msk is 0xFUL ，so QSPI_CONFIG_FREQUENCY min value is 15.
I want modify QSPI_IFCONFIG1_SCKFREQ_Msk how to valid the modify of QSPI_IFCONFIG1_SCKFREQ_Msk ?????
/* Bits 31..28 : SCK frequency is given as 32 MHz / (SCKFREQ + 1). */
#define QSPI_IFCONFIG1_SCKFREQ_Pos (28UL) /*!< Position of SCKFREQ field. */
#define QSPI_IFCONFIG1_SCKFREQ_Msk (0xFUL << QSPI_IFCONFIG1_SCKFREQ_Pos) /*!< Bit mask of SCKFREQ field. */
