Merge pull request #2691 from caleb-garrett/cryp-dma

STM32 CRYP DMA

1 files changed, 17 insertions, 11 deletions

diff --git a/examples/stm32f7/src/bin/cryp.rs b/examples/stm32f7/src/bin/cryp.rs
index 04927841a..235853cb9 100644
--- a/examples/stm32f7/src/bin/cryp.rs
+++ b/examples/stm32f7/src/bin/cryp.rs
@@ -6,11 +6,15 @@ use aes_gcm::aead::{AeadInPlace, KeyInit};
 use aes_gcm::Aes128Gcm;
 use defmt::info;
 use embassy_executor::Spawner;
-use embassy_stm32::cryp::*;
-use embassy_stm32::Config;
+use embassy_stm32::cryp::{self, *};
+use embassy_stm32::{bind_interrupts, peripherals, Config};
 use embassy_time::Instant;
 use {defmt_rtt as _, panic_probe as _};
 
+bind_interrupts!(struct Irqs {
+    CRYP => cryp::InterruptHandler<peripherals::CRYP>;
+});
+
 #[embassy_executor::main]
 async fn main(_spawner: Spawner) -> ! {
     let config = Config::default();
@@ -19,7 +23,7 @@ async fn main(_spawner: Spawner) -> ! {
     let payload: &[u8] = b"hello world";
     let aad: &[u8] = b"additional data";
 
-    let hw_cryp = Cryp::new(p.CRYP);
+    let mut hw_cryp = Cryp::new(p.CRYP, p.DMA2_CH6, p.DMA2_CH5, Irqs);
     let key: [u8; 16] = [0; 16];
     let mut ciphertext: [u8; 11] = [0; 11];
     let mut plaintext: [u8; 11] = [0; 11];
@@ -29,16 +33,18 @@ async fn main(_spawner: Spawner) -> ! {
 
     // Encrypt in hardware using AES-GCM 128-bit
     let aes_gcm = AesGcm::new(&key, &iv);
-    let mut gcm_encrypt = hw_cryp.start(&aes_gcm, Direction::Encrypt);
-    hw_cryp.aad_blocking(&mut gcm_encrypt, aad, true);
-    hw_cryp.payload_blocking(&mut gcm_encrypt, payload, &mut ciphertext, true);
-    let encrypt_tag = hw_cryp.finish_blocking(gcm_encrypt);
+    let mut gcm_encrypt = hw_cryp.start(&aes_gcm, Direction::Encrypt).await;
+    hw_cryp.aad(&mut gcm_encrypt, aad, true).await;
+    hw_cryp.payload(&mut gcm_encrypt, payload, &mut ciphertext, true).await;
+    let encrypt_tag = hw_cryp.finish(gcm_encrypt).await;
 
     // Decrypt in hardware using AES-GCM 128-bit
-    let mut gcm_decrypt = hw_cryp.start(&aes_gcm, Direction::Decrypt);
-    hw_cryp.aad_blocking(&mut gcm_decrypt, aad, true);
-    hw_cryp.payload_blocking(&mut gcm_decrypt, &ciphertext, &mut plaintext, true);
-    let decrypt_tag = hw_cryp.finish_blocking(gcm_decrypt);
+    let mut gcm_decrypt = hw_cryp.start(&aes_gcm, Direction::Decrypt).await;
+    hw_cryp.aad(&mut gcm_decrypt, aad, true).await;
+    hw_cryp
+        .payload(&mut gcm_decrypt, &ciphertext, &mut plaintext, true)
+        .await;
+    let decrypt_tag = hw_cryp.finish(gcm_decrypt).await;
 
     let hw_end_time = Instant::now();
     let hw_execution_time = hw_end_time - hw_start_time;