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/nrf5340-app-pac/src/cti_s/ctitrigoutstatus.rs

@@ -0,0 +1,361 @@
+#[doc = "Register `CTITRIGOUTSTATUS` reader"]
+pub struct R(crate::R<CTITRIGOUTSTATUS_SPEC>);
+impl core::ops::Deref for R {
+    type Target = crate::R<CTITRIGOUTSTATUS_SPEC>;
+    #[inline(always)]
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+impl From<crate::R<CTITRIGOUTSTATUS_SPEC>> for R {
+    #[inline(always)]
+    fn from(reader: crate::R<CTITRIGOUTSTATUS_SPEC>) -> Self {
+        R(reader)
+    }
+}
+#[doc = "Field `DEBUGREQ` reader - Processor debug request"]
+pub type DEBUGREQ_R = crate::BitReader<DEBUGREQ_A>;
+#[doc = "Processor debug request\n\nValue on reset: 0"]
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub enum DEBUGREQ_A {
+    #[doc = "1: Ctitrigout 0 is active."]
+    ACTIVE = 1,
+    #[doc = "0: Ctitrigout 0 is inactive."]
+    INACTIVE = 0,
+}
+impl From<DEBUGREQ_A> for bool {
+    #[inline(always)]
+    fn from(variant: DEBUGREQ_A) -> Self {
+        variant as u8 != 0
+    }
+}
+impl DEBUGREQ_R {
+    #[doc = "Get enumerated values variant"]
+    #[inline(always)]
+    pub fn variant(&self) -> DEBUGREQ_A {
+        match self.bits {
+            true => DEBUGREQ_A::ACTIVE,
+            false => DEBUGREQ_A::INACTIVE,
+        }
+    }
+    #[doc = "Checks if the value of the field is `ACTIVE`"]
+    #[inline(always)]
+    pub fn is_active(&self) -> bool {
+        *self == DEBUGREQ_A::ACTIVE
+    }
+    #[doc = "Checks if the value of the field is `INACTIVE`"]
+    #[inline(always)]
+    pub fn is_inactive(&self) -> bool {
+        *self == DEBUGREQ_A::INACTIVE
+    }
+}
+#[doc = "Field `CPURESTART` reader - Processor Restart"]
+pub type CPURESTART_R = crate::BitReader<CPURESTART_A>;
+#[doc = "Processor Restart\n\nValue on reset: 0"]
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub enum CPURESTART_A {
+    #[doc = "1: Ctitrigout 1 is active."]
+    ACTIVE = 1,
+    #[doc = "0: Ctitrigout 1 is inactive."]
+    INACTIVE = 0,
+}
+impl From<CPURESTART_A> for bool {
+    #[inline(always)]
+    fn from(variant: CPURESTART_A) -> Self {
+        variant as u8 != 0
+    }
+}
+impl CPURESTART_R {
+    #[doc = "Get enumerated values variant"]
+    #[inline(always)]
+    pub fn variant(&self) -> CPURESTART_A {
+        match self.bits {
+            true => CPURESTART_A::ACTIVE,
+            false => CPURESTART_A::INACTIVE,
+        }
+    }
+    #[doc = "Checks if the value of the field is `ACTIVE`"]
+    #[inline(always)]
+    pub fn is_active(&self) -> bool {
+        *self == CPURESTART_A::ACTIVE
+    }
+    #[doc = "Checks if the value of the field is `INACTIVE`"]
+    #[inline(always)]
+    pub fn is_inactive(&self) -> bool {
+        *self == CPURESTART_A::INACTIVE
+    }
+}
+#[doc = "Field `UNUSED0` reader - N/A"]
+pub type UNUSED0_R = crate::BitReader<UNUSED0_A>;
+#[doc = "N/A\n\nValue on reset: 0"]
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub enum UNUSED0_A {
+    #[doc = "1: Ctitrigout 2 is active."]
+    ACTIVE = 1,
+    #[doc = "0: Ctitrigout 2 is inactive."]
+    INACTIVE = 0,
+}
+impl From<UNUSED0_A> for bool {
+    #[inline(always)]
+    fn from(variant: UNUSED0_A) -> Self {
+        variant as u8 != 0
+    }
+}
+impl UNUSED0_R {
+    #[doc = "Get enumerated values variant"]
+    #[inline(always)]
+    pub fn variant(&self) -> UNUSED0_A {
+        match self.bits {
+            true => UNUSED0_A::ACTIVE,
+            false => UNUSED0_A::INACTIVE,
+        }
+    }
+    #[doc = "Checks if the value of the field is `ACTIVE`"]
+    #[inline(always)]
+    pub fn is_active(&self) -> bool {
+        *self == UNUSED0_A::ACTIVE
+    }
+    #[doc = "Checks if the value of the field is `INACTIVE`"]
+    #[inline(always)]
+    pub fn is_inactive(&self) -> bool {
+        *self == UNUSED0_A::INACTIVE
+    }
+}
+#[doc = "Field `UNUSED1` reader - N/A"]
+pub type UNUSED1_R = crate::BitReader<UNUSED1_A>;
+#[doc = "N/A\n\nValue on reset: 0"]
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub enum UNUSED1_A {
+    #[doc = "1: Ctitrigout 3 is active."]
+    ACTIVE = 1,
+    #[doc = "0: Ctitrigout 3 is inactive."]
+    INACTIVE = 0,
+}
+impl From<UNUSED1_A> for bool {
+    #[inline(always)]
+    fn from(variant: UNUSED1_A) -> Self {
+        variant as u8 != 0
+    }
+}
+impl UNUSED1_R {
+    #[doc = "Get enumerated values variant"]
+    #[inline(always)]
+    pub fn variant(&self) -> UNUSED1_A {
+        match self.bits {
+            true => UNUSED1_A::ACTIVE,
+            false => UNUSED1_A::INACTIVE,
+        }
+    }
+    #[doc = "Checks if the value of the field is `ACTIVE`"]
+    #[inline(always)]
+    pub fn is_active(&self) -> bool {
+        *self == UNUSED1_A::ACTIVE
+    }
+    #[doc = "Checks if the value of the field is `INACTIVE`"]
+    #[inline(always)]
+    pub fn is_inactive(&self) -> bool {
+        *self == UNUSED1_A::INACTIVE
+    }
+}
+#[doc = "Field `ETMEVTIN0` reader - ETM Event Input 0"]
+pub type ETMEVTIN0_R = crate::BitReader<ETMEVTIN0_A>;
+#[doc = "ETM Event Input 0\n\nValue on reset: 0"]
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub enum ETMEVTIN0_A {
+    #[doc = "1: Ctitrigout 4 is active."]
+    ACTIVE = 1,
+    #[doc = "0: Ctitrigout 4 is inactive."]
+    INACTIVE = 0,
+}
+impl From<ETMEVTIN0_A> for bool {
+    #[inline(always)]
+    fn from(variant: ETMEVTIN0_A) -> Self {
+        variant as u8 != 0
+    }
+}
+impl ETMEVTIN0_R {
+    #[doc = "Get enumerated values variant"]
+    #[inline(always)]
+    pub fn variant(&self) -> ETMEVTIN0_A {
+        match self.bits {
+            true => ETMEVTIN0_A::ACTIVE,
+            false => ETMEVTIN0_A::INACTIVE,
+        }
+    }
+    #[doc = "Checks if the value of the field is `ACTIVE`"]
+    #[inline(always)]
+    pub fn is_active(&self) -> bool {
+        *self == ETMEVTIN0_A::ACTIVE
+    }
+    #[doc = "Checks if the value of the field is `INACTIVE`"]
+    #[inline(always)]
+    pub fn is_inactive(&self) -> bool {
+        *self == ETMEVTIN0_A::INACTIVE
+    }
+}
+#[doc = "Field `ETMEVTIN1` reader - ETM Event Input 1"]
+pub type ETMEVTIN1_R = crate::BitReader<ETMEVTIN1_A>;
+#[doc = "ETM Event Input 1\n\nValue on reset: 0"]
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub enum ETMEVTIN1_A {
+    #[doc = "1: Ctitrigout 5 is active."]
+    ACTIVE = 1,
+    #[doc = "0: Ctitrigout 5 is inactive."]
+    INACTIVE = 0,
+}
+impl From<ETMEVTIN1_A> for bool {
+    #[inline(always)]
+    fn from(variant: ETMEVTIN1_A) -> Self {
+        variant as u8 != 0
+    }
+}
+impl ETMEVTIN1_R {
+    #[doc = "Get enumerated values variant"]
+    #[inline(always)]
+    pub fn variant(&self) -> ETMEVTIN1_A {
+        match self.bits {
+            true => ETMEVTIN1_A::ACTIVE,
+            false => ETMEVTIN1_A::INACTIVE,
+        }
+    }
+    #[doc = "Checks if the value of the field is `ACTIVE`"]
+    #[inline(always)]
+    pub fn is_active(&self) -> bool {
+        *self == ETMEVTIN1_A::ACTIVE
+    }
+    #[doc = "Checks if the value of the field is `INACTIVE`"]
+    #[inline(always)]
+    pub fn is_inactive(&self) -> bool {
+        *self == ETMEVTIN1_A::INACTIVE
+    }
+}
+#[doc = "Field `ETMEVTIN2` reader - ETM Event Input 2"]
+pub type ETMEVTIN2_R = crate::BitReader<ETMEVTIN2_A>;
+#[doc = "ETM Event Input 2\n\nValue on reset: 0"]
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub enum ETMEVTIN2_A {
+    #[doc = "1: Ctitrigout 6 is active."]
+    ACTIVE = 1,
+    #[doc = "0: Ctitrigout 6 is inactive."]
+    INACTIVE = 0,
+}
+impl From<ETMEVTIN2_A> for bool {
+    #[inline(always)]
+    fn from(variant: ETMEVTIN2_A) -> Self {
+        variant as u8 != 0
+    }
+}
+impl ETMEVTIN2_R {
+    #[doc = "Get enumerated values variant"]
+    #[inline(always)]
+    pub fn variant(&self) -> ETMEVTIN2_A {
+        match self.bits {
+            true => ETMEVTIN2_A::ACTIVE,
+            false => ETMEVTIN2_A::INACTIVE,
+        }
+    }
+    #[doc = "Checks if the value of the field is `ACTIVE`"]
+    #[inline(always)]
+    pub fn is_active(&self) -> bool {
+        *self == ETMEVTIN2_A::ACTIVE
+    }
+    #[doc = "Checks if the value of the field is `INACTIVE`"]
+    #[inline(always)]
+    pub fn is_inactive(&self) -> bool {
+        *self == ETMEVTIN2_A::INACTIVE
+    }
+}
+#[doc = "Field `ETMEVTIN3` reader - ETM Event Input 3"]
+pub type ETMEVTIN3_R = crate::BitReader<ETMEVTIN3_A>;
+#[doc = "ETM Event Input 3\n\nValue on reset: 0"]
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub enum ETMEVTIN3_A {
+    #[doc = "1: Ctitrigout 7 is active."]
+    ACTIVE = 1,
+    #[doc = "0: Ctitrigout 7 is inactive."]
+    INACTIVE = 0,
+}
+impl From<ETMEVTIN3_A> for bool {
+    #[inline(always)]
+    fn from(variant: ETMEVTIN3_A) -> Self {
+        variant as u8 != 0
+    }
+}
+impl ETMEVTIN3_R {
+    #[doc = "Get enumerated values variant"]
+    #[inline(always)]
+    pub fn variant(&self) -> ETMEVTIN3_A {
+        match self.bits {
+            true => ETMEVTIN3_A::ACTIVE,
+            false => ETMEVTIN3_A::INACTIVE,
+        }
+    }
+    #[doc = "Checks if the value of the field is `ACTIVE`"]
+    #[inline(always)]
+    pub fn is_active(&self) -> bool {
+        *self == ETMEVTIN3_A::ACTIVE
+    }
+    #[doc = "Checks if the value of the field is `INACTIVE`"]
+    #[inline(always)]
+    pub fn is_inactive(&self) -> bool {
+        *self == ETMEVTIN3_A::INACTIVE
+    }
+}
+impl R {
+    #[doc = "Bit 0 - Processor debug request"]
+    #[inline(always)]
+    pub fn debugreq(&self) -> DEBUGREQ_R {
+        DEBUGREQ_R::new((self.bits & 1) != 0)
+    }
+    #[doc = "Bit 1 - Processor Restart"]
+    #[inline(always)]
+    pub fn cpurestart(&self) -> CPURESTART_R {
+        CPURESTART_R::new(((self.bits >> 1) & 1) != 0)
+    }
+    #[doc = "Bit 2 - N/A"]
+    #[inline(always)]
+    pub fn unused0(&self) -> UNUSED0_R {
+        UNUSED0_R::new(((self.bits >> 2) & 1) != 0)
+    }
+    #[doc = "Bit 3 - N/A"]
+    #[inline(always)]
+    pub fn unused1(&self) -> UNUSED1_R {
+        UNUSED1_R::new(((self.bits >> 3) & 1) != 0)
+    }
+    #[doc = "Bit 4 - ETM Event Input 0"]
+    #[inline(always)]
+    pub fn etmevtin0(&self) -> ETMEVTIN0_R {
+        ETMEVTIN0_R::new(((self.bits >> 4) & 1) != 0)
+    }
+    #[doc = "Bit 5 - ETM Event Input 1"]
+    #[inline(always)]
+    pub fn etmevtin1(&self) -> ETMEVTIN1_R {
+        ETMEVTIN1_R::new(((self.bits >> 5) & 1) != 0)
+    }
+    #[doc = "Bit 6 - ETM Event Input 2"]
+    #[inline(always)]
+    pub fn etmevtin2(&self) -> ETMEVTIN2_R {
+        ETMEVTIN2_R::new(((self.bits >> 6) & 1) != 0)
+    }
+    #[doc = "Bit 7 - ETM Event Input 3"]
+    #[inline(always)]
+    pub fn etmevtin3(&self) -> ETMEVTIN3_R {
+        ETMEVTIN3_R::new(((self.bits >> 7) & 1) != 0)
+    }
+}
+#[doc = "CTI Trigger Out Status register\n\nThis register you can [`read`](crate::generic::Reg::read). See [API](https://docs.rs/svd2rust/#read--modify--write-api).\n\nFor information about available fields see [ctitrigoutstatus](index.html) module"]
+pub struct CTITRIGOUTSTATUS_SPEC;
+impl crate::RegisterSpec for CTITRIGOUTSTATUS_SPEC {
+    type Ux = u32;
+}
+#[doc = "`read()` method returns [ctitrigoutstatus::R](R) reader structure"]
+impl crate::Readable for CTITRIGOUTSTATUS_SPEC {
+    type Reader = R;
+}
+#[doc = "`reset()` method sets CTITRIGOUTSTATUS to value 0"]
+impl crate::Resettable for CTITRIGOUTSTATUS_SPEC {
+    #[inline(always)]
+    fn reset_value() -> Self::Ux {
+        0
+    }
+}