#[doc = r" Value read from the register"]
pub struct R {
bits: u32,
}
#[doc = r" Value to write to the register"]
pub struct W {
bits: u32,
}
impl super::CFG0 {
#[doc = r" Modifies the contents of the register"]
#[inline]
pub fn modify<F>(&self, f: F)
where
for<'w> F: FnOnce(&R, &'w mut W) -> &'w mut W,
{
let bits = self.register.get();
let r = R { bits: bits };
let mut w = W { bits: bits };
f(&r, &mut w);
self.register.set(w.bits);
}
#[doc = r" Reads the contents of the register"]
#[inline]
pub fn read(&self) -> R {
R { bits: self.register.get() }
}
#[doc = r" Writes to the register"]
#[inline]
pub fn write<F>(&self, f: F)
where
F: FnOnce(&mut W) -> &mut W,
{
let mut w = W::reset_value();
f(&mut w);
self.register.set(w.bits);
}
#[doc = r" Writes the reset value to the register"]
#[inline]
pub fn reset(&self) {
self.write(|w| w)
}
}
#[doc = r" Value of the field"]
pub struct MAX_REFILL_CYCLESR {
bits: u16,
}
impl MAX_REFILL_CYCLESR {
#[doc = r" Value of the field as raw bits"]
#[inline]
pub fn bits(&self) -> u16 {
self.bits
}
}
#[doc = r" Value of the field"]
pub struct RESERVED12R {
bits: u8,
}
impl RESERVED12R {
#[doc = r" Value of the field as raw bits"]
#[inline]
pub fn bits(&self) -> u8 {
self.bits
}
}
#[doc = r" Value of the field"]
pub struct SMPL_DIVR {
bits: u8,
}
impl SMPL_DIVR {
#[doc = r" Value of the field as raw bits"]
#[inline]
pub fn bits(&self) -> u8 {
self.bits
}
}
#[doc = r" Value of the field"]
pub struct MIN_REFILL_CYCLESR {
bits: u8,
}
impl MIN_REFILL_CYCLESR {
#[doc = r" Value of the field as raw bits"]
#[inline]
pub fn bits(&self) -> u8 {
self.bits
}
}
#[doc = r" Proxy"]
pub struct _MAX_REFILL_CYCLESW<'a> {
w: &'a mut W,
}
impl<'a> _MAX_REFILL_CYCLESW<'a> {
#[doc = r" Writes raw bits to the field"]
#[inline]
pub unsafe fn bits(self, value: u16) -> &'a mut W {
const MASK: u16 = 65535;
const OFFSET: u8 = 16;
self.w.bits &= !((MASK as u32) << OFFSET);
self.w.bits |= ((value & MASK) as u32) << OFFSET;
self.w
}
}
#[doc = r" Proxy"]
pub struct _SMPL_DIVW<'a> {
w: &'a mut W,
}
impl<'a> _SMPL_DIVW<'a> {
#[doc = r" Writes raw bits to the field"]
#[inline]
pub unsafe fn bits(self, value: u8) -> &'a mut W {
const MASK: u8 = 15;
const OFFSET: u8 = 8;
self.w.bits &= !((MASK as u32) << OFFSET);
self.w.bits |= ((value & MASK) as u32) << OFFSET;
self.w
}
}
#[doc = r" Proxy"]
pub struct _MIN_REFILL_CYCLESW<'a> {
w: &'a mut W,
}
impl<'a> _MIN_REFILL_CYCLESW<'a> {
#[doc = r" Writes raw bits to the field"]
#[inline]
pub unsafe fn bits(self, value: u8) -> &'a mut W {
const MASK: u8 = 255;
const OFFSET: u8 = 0;
self.w.bits &= !((MASK as u32) << OFFSET);
self.w.bits |= ((value & MASK) as u32) << OFFSET;
self.w
}
}
impl R {
#[doc = r" Value of the register as raw bits"]
#[inline]
pub fn bits(&self) -> u32 {
self.bits
}
#[doc = "Bits 16:31 - This field determines the maximum number of samples (between 2^8 and 2^24) taken to re-generate entropy from the FROs after reading out a 64 bits random number. If the written value of this field is zero, the number of samples is 2^24, otherwise the number of samples equals the written value times 2^8. 0x0000: 2^24 samples 0x0001: 1*2^8 samples 0x0002: 2*2^8 samples 0x0003: 3*2^8 samples ... 0x8000: 32768*2^8 samples 0xC000: 49152*2^8 samples ... 0xFFFF: 65535*2^8 samples This field can only be modified while CTL.TRNG_EN is 0."]
#[inline]
pub fn max_refill_cycles(&self) -> MAX_REFILL_CYCLESR {
let bits = {
const MASK: u16 = 65535;
const OFFSET: u8 = 16;
((self.bits >> OFFSET) & MASK as u32) as u16
};
MAX_REFILL_CYCLESR { bits }
}
#[doc = "Bits 12:15 - Software should not rely on the value of a reserved. Writing any other value than the reset value may result in undefined behavior."]
#[inline]
pub fn reserved12(&self) -> RESERVED12R {
let bits = {
const MASK: u8 = 15;
const OFFSET: u8 = 12;
((self.bits >> OFFSET) & MASK as u32) as u8
};
RESERVED12R { bits }
}
#[doc = "Bits 8:11 - This field directly controls the number of clock cycles between samples taken from the FROs. Default value 0 indicates that samples are taken every clock cycle, maximum value 0xF takes one sample every 16 clock cycles. This field must be set to a value such that the slowest FRO (even under worst-case conditions) has a cycle time less than twice the sample period. This field can only be modified while CTL.TRNG_EN is '0'."]
#[inline]
pub fn smpl_div(&self) -> SMPL_DIVR {
let bits = {
const MASK: u8 = 15;
const OFFSET: u8 = 8;
((self.bits >> OFFSET) & MASK as u32) as u8
};
SMPL_DIVR { bits }
}
#[doc = "Bits 0:7 - This field determines the minimum number of samples (between 2^6 and 2^14) taken to re-generate entropy from the FROs after reading out a 64 bits random number. If the value of this field is zero, the number of samples is fixed to the value determined by the MAX_REFILL_CYCLES field, otherwise the minimum number of samples equals the written value times 64 (which can be up to 2^14). To ensure same entropy in all generated random numbers the value 0 should be used. Then MAX_REFILL_CYCLES controls the minimum refill interval. The number of samples defined here cannot be higher than the number defined by the 'max_refill_cycles' field (i.e. that field takes precedence). No random value will be created if min refill > max refill. This field can only be modified while CTL.TRNG_EN = 0. 0x00: Minimum samples = MAX_REFILL_CYCLES (all numbers have same entropy) 0x01: 1*2^6 samples 0x02: 2*2^6 samples ... 0xFF: 255*2^6 samples"]
#[inline]
pub fn min_refill_cycles(&self) -> MIN_REFILL_CYCLESR {
let bits = {
const MASK: u8 = 255;
const OFFSET: u8 = 0;
((self.bits >> OFFSET) & MASK as u32) as u8
};
MIN_REFILL_CYCLESR { bits }
}
}
impl W {
#[doc = r" Reset value of the register"]
#[inline]
pub fn reset_value() -> W {
W { bits: 0 }
}
#[doc = r" Writes raw bits to the register"]
#[inline]
pub unsafe fn bits(&mut self, bits: u32) -> &mut Self {
self.bits = bits;
self
}
#[doc = "Bits 16:31 - This field determines the maximum number of samples (between 2^8 and 2^24) taken to re-generate entropy from the FROs after reading out a 64 bits random number. If the written value of this field is zero, the number of samples is 2^24, otherwise the number of samples equals the written value times 2^8. 0x0000: 2^24 samples 0x0001: 1*2^8 samples 0x0002: 2*2^8 samples 0x0003: 3*2^8 samples ... 0x8000: 32768*2^8 samples 0xC000: 49152*2^8 samples ... 0xFFFF: 65535*2^8 samples This field can only be modified while CTL.TRNG_EN is 0."]
#[inline]
pub fn max_refill_cycles(&mut self) -> _MAX_REFILL_CYCLESW {
_MAX_REFILL_CYCLESW { w: self }
}
#[doc = "Bits 8:11 - This field directly controls the number of clock cycles between samples taken from the FROs. Default value 0 indicates that samples are taken every clock cycle, maximum value 0xF takes one sample every 16 clock cycles. This field must be set to a value such that the slowest FRO (even under worst-case conditions) has a cycle time less than twice the sample period. This field can only be modified while CTL.TRNG_EN is '0'."]
#[inline]
pub fn smpl_div(&mut self) -> _SMPL_DIVW {
_SMPL_DIVW { w: self }
}
#[doc = "Bits 0:7 - This field determines the minimum number of samples (between 2^6 and 2^14) taken to re-generate entropy from the FROs after reading out a 64 bits random number. If the value of this field is zero, the number of samples is fixed to the value determined by the MAX_REFILL_CYCLES field, otherwise the minimum number of samples equals the written value times 64 (which can be up to 2^14). To ensure same entropy in all generated random numbers the value 0 should be used. Then MAX_REFILL_CYCLES controls the minimum refill interval. The number of samples defined here cannot be higher than the number defined by the 'max_refill_cycles' field (i.e. that field takes precedence). No random value will be created if min refill > max refill. This field can only be modified while CTL.TRNG_EN = 0. 0x00: Minimum samples = MAX_REFILL_CYCLES (all numbers have same entropy) 0x01: 1*2^6 samples 0x02: 2*2^6 samples ... 0xFF: 255*2^6 samples"]
#[inline]
pub fn min_refill_cycles(&mut self) -> _MIN_REFILL_CYCLESW {
_MIN_REFILL_CYCLESW { w: self }
}
}