From 176444320c3c32bd35180ffcdbbda7be0cfd23bc Mon Sep 17 00:00:00 2001
From: gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4>
Date: Tue, 10 Nov 2009 22:13:59 +0000
Subject: git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1281
 35acf78f-673a-0410-8e92-d51de3d6d3f4

---
 os/io/platforms/STM32/spi_lld.c | 15 ++++++++-------
 os/io/platforms/STM32/spi_lld.h |  5 +++--
 2 files changed, 11 insertions(+), 9 deletions(-)

(limited to 'os/io/platforms')

diff --git a/os/io/platforms/STM32/spi_lld.c b/os/io/platforms/STM32/spi_lld.c
index b92dafe6e..087319c5d 100644
--- a/os/io/platforms/STM32/spi_lld.c
+++ b/os/io/platforms/STM32/spi_lld.c
@@ -61,7 +61,7 @@ static void spi_stop(SPIDriver *spip) {
 }
 
 static void spi_start_wait(SPIDriver *spip, size_t n,
-                           void *rxbuf, void *txbuf) {
+                           const void *txbuf, void *rxbuf) {
   uint32_t ccr;
 
   /* Common DMA setup.*/
@@ -294,7 +294,7 @@ void spi_lld_ignore(SPIDriver *spip, size_t n) {
 
   spip->spd_dmarx->CCR = DMA_CCR1_TCIE | DMA_CCR1_TEIE;
   spip->spd_dmatx->CCR = DMA_CCR1_DIR  | DMA_CCR1_TEIE;
-  spi_start_wait(spip, n, &dummyrx, &dummytx);
+  spi_start_wait(spip, n, &dummytx, &dummyrx);
 }
 
 /**
@@ -309,11 +309,12 @@ void spi_lld_ignore(SPIDriver *spip, size_t n) {
  * @note The buffers are organized as uint8_t arrays for data sizes below or
  *       equal to 8 bits else it is organized as uint16_t arrays.
  */
-void spi_lld_exchange(SPIDriver *spip, size_t n, void *txbuf, void *rxbuf) {
+void spi_lld_exchange(SPIDriver *spip, size_t n,
+                      const void *txbuf, void *rxbuf) {
 
   spip->spd_dmarx->CCR = DMA_CCR1_TCIE | DMA_CCR1_MINC | DMA_CCR1_TEIE;
   spip->spd_dmatx->CCR = DMA_CCR1_DIR  | DMA_CCR1_MINC | DMA_CCR1_TEIE;
-  spi_start_wait(spip, n, rxbuf, txbuf);
+  spi_start_wait(spip, n, txbuf, rxbuf);
 }
 
 /**
@@ -326,11 +327,11 @@ void spi_lld_exchange(SPIDriver *spip, size_t n, void *txbuf, void *rxbuf) {
  * @note The buffers are organized as uint8_t arrays for data sizes below or
  *       equal to 8 bits else it is organized as uint16_t arrays.
  */
-void spi_lld_send(SPIDriver *spip, size_t n, void *txbuf) {
+void spi_lld_send(SPIDriver *spip, size_t n, const void *txbuf) {
 
   spip->spd_dmarx->CCR = DMA_CCR1_TCIE | DMA_CCR1_TEIE;
   spip->spd_dmatx->CCR = DMA_CCR1_DIR  | DMA_CCR1_MINC | DMA_CCR1_TEIE;
-  spi_start_wait(spip, n, &dummyrx, txbuf);
+  spi_start_wait(spip, n, txbuf, &dummyrx);
 }
 
 /**
@@ -347,7 +348,7 @@ void spi_lld_receive(SPIDriver *spip, size_t n, void *rxbuf) {
 
   spip->spd_dmarx->CCR = DMA_CCR1_TCIE | DMA_CCR1_MINC | DMA_CCR1_TEIE;
   spip->spd_dmatx->CCR = DMA_CCR1_DIR  | DMA_CCR1_TEIE;
-  spi_start_wait(spip, n, rxbuf, &dummytx);
+  spi_start_wait(spip, n, &dummytx, rxbuf);
 }
 
 /** @} */
diff --git a/os/io/platforms/STM32/spi_lld.h b/os/io/platforms/STM32/spi_lld.h
index 54dcbfff3..a6041f060 100644
--- a/os/io/platforms/STM32/spi_lld.h
+++ b/os/io/platforms/STM32/spi_lld.h
@@ -186,8 +186,9 @@ extern "C" {
   void spi_lld_select(SPIDriver *spip);
   void spi_lld_unselect(SPIDriver *spip);
   void spi_lld_ignore(SPIDriver *spip, size_t n);
-  void spi_lld_exchange(SPIDriver *spip, size_t n, void *txbuf, void *rxbuf);
-  void spi_lld_send(SPIDriver *spip, size_t n, void *txbuf);
+  void spi_lld_exchange(SPIDriver *spip, size_t n,
+                        const void *txbuf, void *rxbuf);
+  void spi_lld_send(SPIDriver *spip, size_t n, const void *txbuf);
   void spi_lld_receive(SPIDriver *spip, size_t n, void *rxbuf);
 #ifdef __cplusplus
 }
-- 
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