From 8fb37c2db9e7386abbb5036752b5e562ce74886e Mon Sep 17 00:00:00 2001
From: Ryan Summers <ryan.summers@vertigo-designs.com>
Date: Thu, 17 Dec 2020 14:10:36 +0100
Subject: [PATCH] Adding docs

---
 src/dac.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/dac.rs b/src/dac.rs
index ef4601a..ef65d19 100644
--- a/src/dac.rs
+++ b/src/dac.rs
@@ -70,6 +70,7 @@ macro_rules! dac_output {
                 Self { _channel, spi }
             }
 
+            /// Start the SPI and begin operating in a DMA-driven transfer mode.
             pub fn start_dma(&mut self) {
                 // Allow the SPI FIFOs to operate using only DMA data channels.
                 self.spi.enable_dma_tx();