git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@6563 35acf78f-673a-0410-8e92-d51de3d6d3f4

1 files changed, 13 insertions, 14 deletions

diff --git a/os/hal/ports/STM32F1xx/adc_lld.c b/os/hal/ports/STM32F1xx/adc_lld.c
index f51ce13f8..956cdf2de 100644
--- a/os/hal/ports/STM32F1xx/adc_lld.c
+++ b/os/hal/ports/STM32F1xx/adc_lld.c
@@ -62,14 +62,14 @@ static void adc_lld_serve_rx_interrupt(ADCDriver *adcp, uint32_t flags) {
     _adc_isr_error_code(adcp, ADC_ERR_DMAFAILURE);

   }

   else {

-    if ((flags & STM32_DMA_ISR_HTIF) != 0) {

-      /* Half transfer processing.*/

-      _adc_isr_half_code(adcp);

-    }

     if ((flags & STM32_DMA_ISR_TCIF) != 0) {

       /* Transfer complete processing.*/

       _adc_isr_full_code(adcp);

     }

+    else if ((flags & STM32_DMA_ISR_HTIF) != 0) {

+      /* Half transfer processing.*/

+      _adc_isr_half_code(adcp);

+    }

   }

 }

 

@@ -180,23 +180,22 @@ void adc_lld_stop(ADCDriver *adcp) {
  * @notapi

  */

 void adc_lld_start_conversion(ADCDriver *adcp) {

-  uint32_t mode, n, cr2;

+  uint32_t mode, cr2;

   const ADCConversionGroup *grpp = adcp->grpp;

 

   /* DMA setup.*/

   mode = adcp->dmamode;

-  if (grpp->circular)

+  if (grpp->circular) {

     mode |= STM32_DMA_CR_CIRC;

-  if (adcp->depth > 1) {

-    /* If the buffer depth is greater than one then the half transfer interrupt

-       interrupt is enabled in order to allows streaming processing.*/

-    mode |= STM32_DMA_CR_HTIE;

-    n = (uint32_t)grpp->num_channels * (uint32_t)adcp->depth;

+    if (adcp->depth > 1) {

+      /* If circular buffer depth > 1, then the half transfer interrupt

+         is enabled in order to allow streaming processing.*/

+      mode |= STM32_DMA_CR_HTIE;

+    }

   }

-  else

-    n = (uint32_t)grpp->num_channels;

   dmaStreamSetMemory0(adcp->dmastp, adcp->samples);

-  dmaStreamSetTransactionSize(adcp->dmastp, n);

+  dmaStreamSetTransactionSize(adcp->dmastp, (uint32_t)grpp->num_channels *

+                                            (uint32_t)adcp->depth);

   dmaStreamSetMode(adcp->dmastp, mode);

   dmaStreamEnable(adcp->dmastp);