From 7d4279338c851ff216f19bc1bfc8952e602572f3 Mon Sep 17 00:00:00 2001
From: Andy Fiddaman <illumos@fiddaman.net>
Date: Wed, 22 Jan 2025 10:05:25 +0000
Subject: [PATCH] Disable periodic IPCC zero bytes on Grapefruit

---
 app/gimletlet/app.toml           | 2 +-
 task/host-sp-comms/src/tx_buf.rs | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/app/gimletlet/app.toml b/app/gimletlet/app.toml
index 4c69693a4..5d00583a3 100644
--- a/app/gimletlet/app.toml
+++ b/app/gimletlet/app.toml
@@ -103,7 +103,7 @@ task-slots = ["jefe"]
 
 [tasks.host_sp_comms]
 name = "task-host-sp-comms"
-features = ["stm32h753", "uart7", "baud_rate_3M", "hardware_flow_control", "vlan"]
+features = ["gimlet", "stm32h753", "uart7", "baud_rate_3M", "hardware_flow_control", "vlan"]
 uses = ["uart7", "dbgmcu"]
 interrupts = {"uart7.irq" = "usart-irq"}
 priority = 8
diff --git a/task/host-sp-comms/src/tx_buf.rs b/task/host-sp-comms/src/tx_buf.rs
index d5d58a125..ab74ead5a 100644
--- a/task/host-sp-comms/src/tx_buf.rs
+++ b/task/host-sp-comms/src/tx_buf.rs
@@ -139,10 +139,16 @@ impl TxBuf {
     }
 
     /// Should we be sending periodic 0 bytes?
+    #[cfg(feature = "gimlet")]
     pub(crate) fn should_send_periodic_zero_bytes(&self) -> bool {
         matches!(self.state, State::Idle)
     }
 
+    #[cfg(feature = "grapefruit")]
+    pub(crate) fn should_send_periodic_zero_bytes(&self) -> bool {
+        false
+    }
+
     /// Encodes `reason` into our outgoing buffer.
     ///
     /// # Panics