From bc7ed47b7b3a23292942b4f052fa6498b156b867 Mon Sep 17 00:00:00 2001
From: mitchmindtree <mitchell.nordine@gmail.com>
Date: Wed, 16 Sep 2020 17:28:22 +0200
Subject: [PATCH] Add TX DMA implementation for SPI3

DMA2 channel 2 was selected after referring to the "DMA request mapping"
section of the reference manual (section 13.3.7).

Tested locally with a large number of LEDs and works well.
---
 CHANGELOG.md | 5 +++--
 src/spi.rs   | 2 ++
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 50fa588d..72cb98fd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,7 +13,8 @@ MonoTimer now takes ownership of the DCB register
 
 ### Fixed
 
-- Fix MonoTimer not working in debug mode. 
+- Fix MonoTimer not working in debug mode.
+- Add missing TX DMA implementation for SPI3.
 
 ## [v0.6.1] - 2020-06-25
 
@@ -24,7 +25,7 @@ MonoTimer now takes ownership of the DCB register
 ### Fixed
 
 - Fix wrong frequency reported by `MonoTimer`
-- Fix wrong timings generated by `Timer::syst` 
+- Fix wrong timings generated by `Timer::syst`
 - Fix period retrieval for timers
 
 ### Changed
diff --git a/src/spi.rs b/src/spi.rs
index 9a4c8359..f57ad4da 100644
--- a/src/spi.rs
+++ b/src/spi.rs
@@ -41,6 +41,7 @@ use crate::pac::{SPI1, SPI2};
 
 use crate::afio::MAPR;
 use crate::dma::dma1::{C3, C5};
+use crate::dma::dma2::C2;
 use crate::dma::{Static, Transfer, TransferPayload, Transmit, TxDma, R};
 use crate::gpio::gpioa::{PA5, PA6, PA7};
 use crate::gpio::gpiob::{PB13, PB14, PB15, PB3, PB4, PB5};
@@ -498,3 +499,4 @@ macro_rules! spi_dma {
 
 spi_dma!(SPI1, C3);
 spi_dma!(SPI2, C5);
+spi_dma!(SPI3, C2);