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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

Import librarymbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

Diff: targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/dma_api.c

Revision:
548:1abac31e188e
Parent:
525:c320967f86b9
Child:
627:4fa1328d9c60
--- a/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/dma_api.c	Fri May 22 09:45:08 2015 +0100
+++ b/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/dma_api.c	Fri May 22 10:45:46 2015 +0100
@@ -39,55 +39,51 @@
 
 void dma_init(void)
 {
-  if (enabled) return;
-  DMA_Init_TypeDef   dmaInit;
+    if (enabled) return;
+    DMA_Init_TypeDef   dmaInit;
 
-  CMU_ClockEnable(cmuClock_DMA, true);
-  CMU_ClockEnable(cmuClock_HFPER, true);
+    CMU_ClockEnable(cmuClock_DMA, true);
+    CMU_ClockEnable(cmuClock_HFPER, true);
 
-  /* Configure general DMA issues */
-  dmaInit.hprot        = 0;
-  dmaInit.controlBlock = dmaControlBlock;
-  DMA_Init(&dmaInit);
-  enabled = true;
+    /* Configure general DMA issues */
+    dmaInit.hprot        = 0;
+    dmaInit.controlBlock = dmaControlBlock;
+    DMA_Init(&dmaInit);
+    enabled = true;
 }
 
 int dma_channel_allocate(uint32_t capabilities)
 {
-  int i;
-  // Check if 2d copy is required
-  if (DMA_CAP_2DCOPY & capabilities)
-  {
-    if (channels & 1) 
-    {
-      // Channel already in use
-      return DMA_ERROR_OUT_OF_CHANNELS;
-    } else {
-      channels |= 1 << 0;
-      return 0;
+    int i;
+    // Check if 2d copy is required
+    if (DMA_CAP_2DCOPY & capabilities) {
+        if (channels & 1) {
+            // Channel already in use
+            return DMA_ERROR_OUT_OF_CHANNELS;
+        } else {
+            channels |= 1 << 0;
+            return 0;
+        }
     }
-  }
-  for (i = 1; i < DMA_CHAN_COUNT; i++)
-  {
-    if ((channels & (1 << i)) == 0) 
-    {
-      // Channel available
-      channels |= 1 << i;
-      return i;
+    for (i = 1; i < DMA_CHAN_COUNT; i++) {
+        if ((channels & (1 << i)) == 0) {
+            // Channel available
+            channels |= 1 << i;
+            return i;
+        }
     }
-  }
-  // Check if channel 0 is available
-  if ((channels & 1 ) == 0) {
-    channels |= 1 << 0;
-    return 0;
-  }
-  // Couldn't find a channel.
-  return DMA_ERROR_OUT_OF_CHANNELS;
+    // Check if channel 0 is available
+    if ((channels & 1 ) == 0) {
+        channels |= 1 << 0;
+        return 0;
+    }
+    // Couldn't find a channel.
+    return DMA_ERROR_OUT_OF_CHANNELS;
 }
 
-int dma_channel_free(int channelid) 
+int dma_channel_free(int channelid)
 {
-  channels &= ~(1 << channelid);
-  return 0;
+    channels &= ~(1 << channelid);
+    return 0;
 }