From 2d899a17e727a9b68ce01090b412c8211f055293 Mon Sep 17 00:00:00 2001
From: Dion Dokter <diondokter@gmail.com>
Date: Tue, 29 Oct 2024 17:26:35 +0100
Subject: [PATCH] Add some sanity checks

---
 embassy-stm32/src/qspi/mod.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/embassy-stm32/src/qspi/mod.rs b/embassy-stm32/src/qspi/mod.rs
index 715c260e9..6530b75b1 100644
--- a/embassy-stm32/src/qspi/mod.rs
+++ b/embassy-stm32/src/qspi/mod.rs
@@ -202,6 +202,18 @@ impl<'d, T: Instance, M: PeriMode> Qspi<'d, T, M> {
     }
 
     fn setup_transaction(&mut self, fmode: QspiMode, transaction: &TransferConfig, data_len: Option<usize>) {
+        if let (Some(_), QspiWidth::NONE) = (transaction.address, transaction.awidth) {
+            panic!("QSPI address can't be sent with an address width of NONE");
+        }
+
+        if let (Some(_), QspiWidth::NONE) = (data_len, transaction.dwidth) {
+            panic!("QSPI data can't be sent with a data width of NONE");
+        }
+
+        if let Some(0) = data_len {
+            panic!("QSPI data must be at least one byte");
+        }
+
         T::REGS.fcr().modify(|v| {
             v.set_csmf(true);
             v.set_ctcf(true);