feat: add display UI with splash screen, dashboard, and RSSI sparkline

Implement full SSD1306 OLED display support:
- Splash screen on boot (1.5s) with project name, version, board
- Dashboard showing radio state, config, counters, RSSI/SNR
- RSSI history sparkline (64-sample ring buffer, 2px-wide bars)
- DisplayOn/DisplayOff host commands routed via dedicated channel
- Pure render functions against generic DrawTarget (no hardware coupling)
- Display on/off control bypasses radio task entirely

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

vendor/nrf51-pac/src/twi0/intenclr.rs

@@ -0,0 +1,468 @@
+#[doc = "Register `INTENCLR` reader"]
+pub struct R(crate::R<INTENCLR_SPEC>);
+impl core::ops::Deref for R {
+    type Target = crate::R<INTENCLR_SPEC>;
+    #[inline(always)]
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+impl From<crate::R<INTENCLR_SPEC>> for R {
+    #[inline(always)]
+    fn from(reader: crate::R<INTENCLR_SPEC>) -> Self {
+        R(reader)
+    }
+}
+#[doc = "Register `INTENCLR` writer"]
+pub struct W(crate::W<INTENCLR_SPEC>);
+impl core::ops::Deref for W {
+    type Target = crate::W<INTENCLR_SPEC>;
+    #[inline(always)]
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+impl core::ops::DerefMut for W {
+    #[inline(always)]
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.0
+    }
+}
+impl From<crate::W<INTENCLR_SPEC>> for W {
+    #[inline(always)]
+    fn from(writer: crate::W<INTENCLR_SPEC>) -> Self {
+        W(writer)
+    }
+}
+#[doc = "Field `STOPPED` reader - Disable interrupt on STOPPED event."]
+pub type STOPPED_R = crate::BitReader<STOPPED_A>;
+#[doc = "Disable interrupt on STOPPED event.\n\nValue on reset: 0"]
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub enum STOPPED_A {
+    #[doc = "0: Interrupt disabled."]
+    DISABLED = 0,
+    #[doc = "1: Interrupt enabled."]
+    ENABLED = 1,
+}
+impl From<STOPPED_A> for bool {
+    #[inline(always)]
+    fn from(variant: STOPPED_A) -> Self {
+        variant as u8 != 0
+    }
+}
+impl STOPPED_R {
+    #[doc = "Get enumerated values variant"]
+    #[inline(always)]
+    pub fn variant(&self) -> STOPPED_A {
+        match self.bits {
+            false => STOPPED_A::DISABLED,
+            true => STOPPED_A::ENABLED,
+        }
+    }
+    #[doc = "Checks if the value of the field is `DISABLED`"]
+    #[inline(always)]
+    pub fn is_disabled(&self) -> bool {
+        *self == STOPPED_A::DISABLED
+    }
+    #[doc = "Checks if the value of the field is `ENABLED`"]
+    #[inline(always)]
+    pub fn is_enabled(&self) -> bool {
+        *self == STOPPED_A::ENABLED
+    }
+}
+#[doc = "Disable interrupt on STOPPED event.\n\nValue on reset: 0"]
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub enum STOPPED_AW {
+    #[doc = "1: Disable interrupt on write."]
+    CLEAR = 1,
+}
+impl From<STOPPED_AW> for bool {
+    #[inline(always)]
+    fn from(variant: STOPPED_AW) -> Self {
+        variant as u8 != 0
+    }
+}
+#[doc = "Field `STOPPED` writer - Disable interrupt on STOPPED event."]
+pub type STOPPED_W<'a, const O: u8> = crate::BitWriter<'a, u32, INTENCLR_SPEC, STOPPED_AW, O>;
+impl<'a, const O: u8> STOPPED_W<'a, O> {
+    #[doc = "Disable interrupt on write."]
+    #[inline(always)]
+    pub fn clear(self) -> &'a mut W {
+        self.variant(STOPPED_AW::CLEAR)
+    }
+}
+#[doc = "Field `RXDREADY` reader - Disable interrupt on RXDREADY event."]
+pub type RXDREADY_R = crate::BitReader<RXDREADY_A>;
+#[doc = "Disable interrupt on RXDREADY event.\n\nValue on reset: 0"]
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub enum RXDREADY_A {
+    #[doc = "0: Interrupt disabled."]
+    DISABLED = 0,
+    #[doc = "1: Interrupt enabled."]
+    ENABLED = 1,
+}
+impl From<RXDREADY_A> for bool {
+    #[inline(always)]
+    fn from(variant: RXDREADY_A) -> Self {
+        variant as u8 != 0
+    }
+}
+impl RXDREADY_R {
+    #[doc = "Get enumerated values variant"]
+    #[inline(always)]
+    pub fn variant(&self) -> RXDREADY_A {
+        match self.bits {
+            false => RXDREADY_A::DISABLED,
+            true => RXDREADY_A::ENABLED,
+        }
+    }
+    #[doc = "Checks if the value of the field is `DISABLED`"]
+    #[inline(always)]
+    pub fn is_disabled(&self) -> bool {
+        *self == RXDREADY_A::DISABLED
+    }
+    #[doc = "Checks if the value of the field is `ENABLED`"]
+    #[inline(always)]
+    pub fn is_enabled(&self) -> bool {
+        *self == RXDREADY_A::ENABLED
+    }
+}
+#[doc = "Disable interrupt on RXDREADY event.\n\nValue on reset: 0"]
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub enum RXDREADY_AW {
+    #[doc = "1: Disable interrupt on write."]
+    CLEAR = 1,
+}
+impl From<RXDREADY_AW> for bool {
+    #[inline(always)]
+    fn from(variant: RXDREADY_AW) -> Self {
+        variant as u8 != 0
+    }
+}
+#[doc = "Field `RXDREADY` writer - Disable interrupt on RXDREADY event."]
+pub type RXDREADY_W<'a, const O: u8> = crate::BitWriter<'a, u32, INTENCLR_SPEC, RXDREADY_AW, O>;
+impl<'a, const O: u8> RXDREADY_W<'a, O> {
+    #[doc = "Disable interrupt on write."]
+    #[inline(always)]
+    pub fn clear(self) -> &'a mut W {
+        self.variant(RXDREADY_AW::CLEAR)
+    }
+}
+#[doc = "Field `TXDSENT` reader - Disable interrupt on TXDSENT event."]
+pub type TXDSENT_R = crate::BitReader<TXDSENT_A>;
+#[doc = "Disable interrupt on TXDSENT event.\n\nValue on reset: 0"]
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub enum TXDSENT_A {
+    #[doc = "0: Interrupt disabled."]
+    DISABLED = 0,
+    #[doc = "1: Interrupt enabled."]
+    ENABLED = 1,
+}
+impl From<TXDSENT_A> for bool {
+    #[inline(always)]
+    fn from(variant: TXDSENT_A) -> Self {
+        variant as u8 != 0
+    }
+}
+impl TXDSENT_R {
+    #[doc = "Get enumerated values variant"]
+    #[inline(always)]
+    pub fn variant(&self) -> TXDSENT_A {
+        match self.bits {
+            false => TXDSENT_A::DISABLED,
+            true => TXDSENT_A::ENABLED,
+        }
+    }
+    #[doc = "Checks if the value of the field is `DISABLED`"]
+    #[inline(always)]
+    pub fn is_disabled(&self) -> bool {
+        *self == TXDSENT_A::DISABLED
+    }
+    #[doc = "Checks if the value of the field is `ENABLED`"]
+    #[inline(always)]
+    pub fn is_enabled(&self) -> bool {
+        *self == TXDSENT_A::ENABLED
+    }
+}
+#[doc = "Disable interrupt on TXDSENT event.\n\nValue on reset: 0"]
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub enum TXDSENT_AW {
+    #[doc = "1: Disable interrupt on write."]
+    CLEAR = 1,
+}
+impl From<TXDSENT_AW> for bool {
+    #[inline(always)]
+    fn from(variant: TXDSENT_AW) -> Self {
+        variant as u8 != 0
+    }
+}
+#[doc = "Field `TXDSENT` writer - Disable interrupt on TXDSENT event."]
+pub type TXDSENT_W<'a, const O: u8> = crate::BitWriter<'a, u32, INTENCLR_SPEC, TXDSENT_AW, O>;
+impl<'a, const O: u8> TXDSENT_W<'a, O> {
+    #[doc = "Disable interrupt on write."]
+    #[inline(always)]
+    pub fn clear(self) -> &'a mut W {
+        self.variant(TXDSENT_AW::CLEAR)
+    }
+}
+#[doc = "Field `ERROR` reader - Disable interrupt on ERROR event."]
+pub type ERROR_R = crate::BitReader<ERROR_A>;
+#[doc = "Disable interrupt on ERROR event.\n\nValue on reset: 0"]
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub enum ERROR_A {
+    #[doc = "0: Interrupt disabled."]
+    DISABLED = 0,
+    #[doc = "1: Interrupt enabled."]
+    ENABLED = 1,
+}
+impl From<ERROR_A> for bool {
+    #[inline(always)]
+    fn from(variant: ERROR_A) -> Self {
+        variant as u8 != 0
+    }
+}
+impl ERROR_R {
+    #[doc = "Get enumerated values variant"]
+    #[inline(always)]
+    pub fn variant(&self) -> ERROR_A {
+        match self.bits {
+            false => ERROR_A::DISABLED,
+            true => ERROR_A::ENABLED,
+        }
+    }
+    #[doc = "Checks if the value of the field is `DISABLED`"]
+    #[inline(always)]
+    pub fn is_disabled(&self) -> bool {
+        *self == ERROR_A::DISABLED
+    }
+    #[doc = "Checks if the value of the field is `ENABLED`"]
+    #[inline(always)]
+    pub fn is_enabled(&self) -> bool {
+        *self == ERROR_A::ENABLED
+    }
+}
+#[doc = "Disable interrupt on ERROR event.\n\nValue on reset: 0"]
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub enum ERROR_AW {
+    #[doc = "1: Disable interrupt on write."]
+    CLEAR = 1,
+}
+impl From<ERROR_AW> for bool {
+    #[inline(always)]
+    fn from(variant: ERROR_AW) -> Self {
+        variant as u8 != 0
+    }
+}
+#[doc = "Field `ERROR` writer - Disable interrupt on ERROR event."]
+pub type ERROR_W<'a, const O: u8> = crate::BitWriter<'a, u32, INTENCLR_SPEC, ERROR_AW, O>;
+impl<'a, const O: u8> ERROR_W<'a, O> {
+    #[doc = "Disable interrupt on write."]
+    #[inline(always)]
+    pub fn clear(self) -> &'a mut W {
+        self.variant(ERROR_AW::CLEAR)
+    }
+}
+#[doc = "Field `BB` reader - Disable interrupt on BB event."]
+pub type BB_R = crate::BitReader<BB_A>;
+#[doc = "Disable interrupt on BB event.\n\nValue on reset: 0"]
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub enum BB_A {
+    #[doc = "0: Interrupt disabled."]
+    DISABLED = 0,
+    #[doc = "1: Interrupt enabled."]
+    ENABLED = 1,
+}
+impl From<BB_A> for bool {
+    #[inline(always)]
+    fn from(variant: BB_A) -> Self {
+        variant as u8 != 0
+    }
+}
+impl BB_R {
+    #[doc = "Get enumerated values variant"]
+    #[inline(always)]
+    pub fn variant(&self) -> BB_A {
+        match self.bits {
+            false => BB_A::DISABLED,
+            true => BB_A::ENABLED,
+        }
+    }
+    #[doc = "Checks if the value of the field is `DISABLED`"]
+    #[inline(always)]
+    pub fn is_disabled(&self) -> bool {
+        *self == BB_A::DISABLED
+    }
+    #[doc = "Checks if the value of the field is `ENABLED`"]
+    #[inline(always)]
+    pub fn is_enabled(&self) -> bool {
+        *self == BB_A::ENABLED
+    }
+}
+#[doc = "Disable interrupt on BB event.\n\nValue on reset: 0"]
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub enum BB_AW {
+    #[doc = "1: Disable interrupt on write."]
+    CLEAR = 1,
+}
+impl From<BB_AW> for bool {
+    #[inline(always)]
+    fn from(variant: BB_AW) -> Self {
+        variant as u8 != 0
+    }
+}
+#[doc = "Field `BB` writer - Disable interrupt on BB event."]
+pub type BB_W<'a, const O: u8> = crate::BitWriter<'a, u32, INTENCLR_SPEC, BB_AW, O>;
+impl<'a, const O: u8> BB_W<'a, O> {
+    #[doc = "Disable interrupt on write."]
+    #[inline(always)]
+    pub fn clear(self) -> &'a mut W {
+        self.variant(BB_AW::CLEAR)
+    }
+}
+#[doc = "Field `SUSPENDED` reader - Disable interrupt on SUSPENDED event."]
+pub type SUSPENDED_R = crate::BitReader<SUSPENDED_A>;
+#[doc = "Disable interrupt on SUSPENDED event.\n\nValue on reset: 0"]
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub enum SUSPENDED_A {
+    #[doc = "0: Interrupt disabled."]
+    DISABLED = 0,
+    #[doc = "1: Interrupt enabled."]
+    ENABLED = 1,
+}
+impl From<SUSPENDED_A> for bool {
+    #[inline(always)]
+    fn from(variant: SUSPENDED_A) -> Self {
+        variant as u8 != 0
+    }
+}
+impl SUSPENDED_R {
+    #[doc = "Get enumerated values variant"]
+    #[inline(always)]
+    pub fn variant(&self) -> SUSPENDED_A {
+        match self.bits {
+            false => SUSPENDED_A::DISABLED,
+            true => SUSPENDED_A::ENABLED,
+        }
+    }
+    #[doc = "Checks if the value of the field is `DISABLED`"]
+    #[inline(always)]
+    pub fn is_disabled(&self) -> bool {
+        *self == SUSPENDED_A::DISABLED
+    }
+    #[doc = "Checks if the value of the field is `ENABLED`"]
+    #[inline(always)]
+    pub fn is_enabled(&self) -> bool {
+        *self == SUSPENDED_A::ENABLED
+    }
+}
+#[doc = "Disable interrupt on SUSPENDED event.\n\nValue on reset: 0"]
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub enum SUSPENDED_AW {
+    #[doc = "1: Disable interrupt on write."]
+    CLEAR = 1,
+}
+impl From<SUSPENDED_AW> for bool {
+    #[inline(always)]
+    fn from(variant: SUSPENDED_AW) -> Self {
+        variant as u8 != 0
+    }
+}
+#[doc = "Field `SUSPENDED` writer - Disable interrupt on SUSPENDED event."]
+pub type SUSPENDED_W<'a, const O: u8> = crate::BitWriter<'a, u32, INTENCLR_SPEC, SUSPENDED_AW, O>;
+impl<'a, const O: u8> SUSPENDED_W<'a, O> {
+    #[doc = "Disable interrupt on write."]
+    #[inline(always)]
+    pub fn clear(self) -> &'a mut W {
+        self.variant(SUSPENDED_AW::CLEAR)
+    }
+}
+impl R {
+    #[doc = "Bit 1 - Disable interrupt on STOPPED event."]
+    #[inline(always)]
+    pub fn stopped(&self) -> STOPPED_R {
+        STOPPED_R::new(((self.bits >> 1) & 1) != 0)
+    }
+    #[doc = "Bit 2 - Disable interrupt on RXDREADY event."]
+    #[inline(always)]
+    pub fn rxdready(&self) -> RXDREADY_R {
+        RXDREADY_R::new(((self.bits >> 2) & 1) != 0)
+    }
+    #[doc = "Bit 7 - Disable interrupt on TXDSENT event."]
+    #[inline(always)]
+    pub fn txdsent(&self) -> TXDSENT_R {
+        TXDSENT_R::new(((self.bits >> 7) & 1) != 0)
+    }
+    #[doc = "Bit 9 - Disable interrupt on ERROR event."]
+    #[inline(always)]
+    pub fn error(&self) -> ERROR_R {
+        ERROR_R::new(((self.bits >> 9) & 1) != 0)
+    }
+    #[doc = "Bit 14 - Disable interrupt on BB event."]
+    #[inline(always)]
+    pub fn bb(&self) -> BB_R {
+        BB_R::new(((self.bits >> 14) & 1) != 0)
+    }
+    #[doc = "Bit 18 - Disable interrupt on SUSPENDED event."]
+    #[inline(always)]
+    pub fn suspended(&self) -> SUSPENDED_R {
+        SUSPENDED_R::new(((self.bits >> 18) & 1) != 0)
+    }
+}
+impl W {
+    #[doc = "Bit 1 - Disable interrupt on STOPPED event."]
+    #[inline(always)]
+    pub fn stopped(&mut self) -> STOPPED_W<1> {
+        STOPPED_W::new(self)
+    }
+    #[doc = "Bit 2 - Disable interrupt on RXDREADY event."]
+    #[inline(always)]
+    pub fn rxdready(&mut self) -> RXDREADY_W<2> {
+        RXDREADY_W::new(self)
+    }
+    #[doc = "Bit 7 - Disable interrupt on TXDSENT event."]
+    #[inline(always)]
+    pub fn txdsent(&mut self) -> TXDSENT_W<7> {
+        TXDSENT_W::new(self)
+    }
+    #[doc = "Bit 9 - Disable interrupt on ERROR event."]
+    #[inline(always)]
+    pub fn error(&mut self) -> ERROR_W<9> {
+        ERROR_W::new(self)
+    }
+    #[doc = "Bit 14 - Disable interrupt on BB event."]
+    #[inline(always)]
+    pub fn bb(&mut self) -> BB_W<14> {
+        BB_W::new(self)
+    }
+    #[doc = "Bit 18 - Disable interrupt on SUSPENDED event."]
+    #[inline(always)]
+    pub fn suspended(&mut self) -> SUSPENDED_W<18> {
+        SUSPENDED_W::new(self)
+    }
+    #[doc = "Writes raw bits to the register."]
+    #[inline(always)]
+    pub unsafe fn bits(&mut self, bits: u32) -> &mut Self {
+        self.0.bits(bits);
+        self
+    }
+}
+#[doc = "Interrupt enable clear register.\n\nThis register you can [`read`](crate::generic::Reg::read), [`write_with_zero`](crate::generic::Reg::write_with_zero), [`reset`](crate::generic::Reg::reset), [`write`](crate::generic::Reg::write), [`modify`](crate::generic::Reg::modify). See [API](https://docs.rs/svd2rust/#read--modify--write-api).\n\nFor information about available fields see [intenclr](index.html) module"]
+pub struct INTENCLR_SPEC;
+impl crate::RegisterSpec for INTENCLR_SPEC {
+    type Ux = u32;
+}
+#[doc = "`read()` method returns [intenclr::R](R) reader structure"]
+impl crate::Readable for INTENCLR_SPEC {
+    type Reader = R;
+}
+#[doc = "`write(|w| ..)` method takes [intenclr::W](W) writer structure"]
+impl crate::Writable for INTENCLR_SPEC {
+    type Writer = W;
+}
+#[doc = "`reset()` method sets INTENCLR to value 0"]
+impl crate::Resettable for INTENCLR_SPEC {
+    #[inline(always)]
+    fn reset_value() -> Self::Ux {
+        0
+    }
+}