From 06593fd3966ffff2ad5fbaaa14bbf82c61c4bd6a Mon Sep 17 00:00:00 2001
From: gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4>
Date: Thu, 25 Nov 2010 20:45:15 +0000
Subject: STM32 SPI driver optimization.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@2427 35acf78f-673a-0410-8e92-d51de3d6d3f4
---
 os/hal/platforms/STM32/spi_lld.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

(limited to 'os')

diff --git a/os/hal/platforms/STM32/spi_lld.c b/os/hal/platforms/STM32/spi_lld.c
index d9abd5ba1..90e4305dc 100644
--- a/os/hal/platforms/STM32/spi_lld.c
+++ b/os/hal/platforms/STM32/spi_lld.c
@@ -391,10 +391,9 @@ void spi_lld_unselect(SPIDriver *spip) {
 void spi_lld_ignore(SPIDriver *spip, size_t n) {
 
   dmaChannelSetup(spip->spd_dmarx, n, &dummyrx,
-                  spip->spd_dmaccr | DMA_CCR1_TCIE);
+                  spip->spd_dmaccr | DMA_CCR1_TCIE | DMA_CCR1_EN);
   dmaChannelSetup(spip->spd_dmatx, n, &dummytx,
-                  spip->spd_dmaccr | DMA_CCR1_DIR);
-  dma_start(spip);
+                  spip->spd_dmaccr | DMA_CCR1_DIR | DMA_CCR1_EN);
 }
 
 /**
@@ -416,10 +415,11 @@ void spi_lld_exchange(SPIDriver *spip, size_t n,
                       const void *txbuf, void *rxbuf) {
 
   dmaChannelSetup(spip->spd_dmarx, n, rxbuf,
-                  spip->spd_dmaccr | DMA_CCR1_TCIE | DMA_CCR1_MINC);
+                  spip->spd_dmaccr | DMA_CCR1_TCIE | DMA_CCR1_MINC |
+                  DMA_CCR1_EN);
   dmaChannelSetup(spip->spd_dmatx, n, txbuf,
-                  spip->spd_dmaccr | DMA_CCR1_DIR | DMA_CCR1_MINC);
-  dma_start(spip);
+                  spip->spd_dmaccr | DMA_CCR1_DIR | DMA_CCR1_MINC |
+                  DMA_CCR1_EN);
 }
 
 /**
@@ -438,10 +438,10 @@ void spi_lld_exchange(SPIDriver *spip, size_t n,
 void spi_lld_send(SPIDriver *spip, size_t n, const void *txbuf) {
 
   dmaChannelSetup(spip->spd_dmarx, n, &dummyrx,
-                  spip->spd_dmaccr | DMA_CCR1_TCIE);
+                  spip->spd_dmaccr | DMA_CCR1_TCIE | DMA_CCR1_EN);
   dmaChannelSetup(spip->spd_dmatx, n, txbuf,
-                  spip->spd_dmaccr | DMA_CCR1_DIR | DMA_CCR1_MINC);
-  dma_start(spip);
+                  spip->spd_dmaccr | DMA_CCR1_DIR | DMA_CCR1_MINC |
+                  DMA_CCR1_EN);
 }
 
 /**
@@ -460,10 +460,10 @@ void spi_lld_send(SPIDriver *spip, size_t n, const void *txbuf) {
 void spi_lld_receive(SPIDriver *spip, size_t n, void *rxbuf) {
 
   dmaChannelSetup(spip->spd_dmarx, n, rxbuf,
-                  spip->spd_dmaccr | DMA_CCR1_TCIE | DMA_CCR1_MINC);
+                  spip->spd_dmaccr | DMA_CCR1_TCIE | DMA_CCR1_MINC |
+                  DMA_CCR1_EN);
   dmaChannelSetup(spip->spd_dmatx, n, &dummytx,
-                  spip->spd_dmaccr | DMA_CCR1_DIR);
-  dma_start(spip);
+                  spip->spd_dmaccr | DMA_CCR1_DIR | DMA_CCR1_EN);
 }
 
 /**
-- 
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