Fixed bug related to spurious interrupt

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@11533 35acf78f-673a-0410-8e92-d51de3d6d3f4

1 files changed, 11 insertions, 11 deletions

diff --git a/os/hal/ports/SAMA/LLD/USARTv1/hal_uart_lld.c b/os/hal/ports/SAMA/LLD/USARTv1/hal_uart_lld.c
index 7589c82fb..abf5f9e9b 100644
--- a/os/hal/ports/SAMA/LLD/USARTv1/hal_uart_lld.c
+++ b/os/hal/ports/SAMA/LLD/USARTv1/hal_uart_lld.c
@@ -1343,6 +1343,13 @@ void uart_lld_stop(UARTDriver *uartp) {
  */

 void uart_lld_start_send(UARTDriver *uartp, size_t n, const void *txbuf) {

 

+  /* TX DMA channel preparation.*/

+  dmaChannelSetSource(uartp->dmatx, txbuf);

+  dmaChannelSetTransactionSize(uartp->dmatx, n);

+

+  /* Starting transfer.*/

+  dmaChannelEnable(uartp->dmatx);

+

   /* Only enable TC interrupt if there's a callback attached to it.

      Also we need to clear TC flag which could be set before. */

   if (uartp->config->txend2_cb != NULL) {

@@ -1355,13 +1362,6 @@ void uart_lld_start_send(UARTDriver *uartp, size_t n, const void *txbuf) {
       uartp->usart->US_IER = US_IER_TXEMPTY;

 #endif

   }

-

-  /* TX DMA channel preparation.*/

-  dmaChannelSetSource(uartp->dmatx, txbuf);

-  dmaChannelSetTransactionSize(uartp->dmatx, n);

-

-  /* Starting transfer.*/

-  dmaChannelEnable(uartp->dmatx);

 }

 

 /**

@@ -1378,8 +1378,8 @@ void uart_lld_start_send(UARTDriver *uartp, size_t n, const void *txbuf) {
 size_t uart_lld_stop_send(UARTDriver *uartp) {

 

   dmaChannelDisable(uartp->dmatx);

-  /* number of data frames not transmitted is always zero */

-  return 0;

+

+  return dmaChannelGetTransactionSize(uartp->dmatx);

 }

 

 /**

@@ -1400,7 +1400,7 @@ void uart_lld_start_receive(UARTDriver *uartp, size_t n, void *rxbuf) {
 

   /* Enabling BIE interrupt if disabled */

   if ((uartp->dmarx->xdmac->XDMAC_CHID[uartp->dmarx->chid].XDMAC_CIM & XDMAC_CIM_BIM) == 0) {

-  uartp->dmarx->xdmac->XDMAC_CHID[uartp->dmarx->chid].XDMAC_CIE =  XDMAC_CIE_BIE;

+    uartp->dmarx->xdmac->XDMAC_CHID[uartp->dmarx->chid].XDMAC_CIE =  XDMAC_CIE_BIE;

   }

 

   /* Resetting the XDMAC_CNCDAx */

@@ -1440,7 +1440,7 @@ size_t uart_lld_stop_receive(UARTDriver *uartp) {
   size_t n;

 

   dmaChannelDisable(uartp->dmarx);

-  n = 0;

+  n = dmaChannelGetTransactionSize(uartp->dmarx);

   uart_enter_rx_idle_loop(uartp);

 

   return n;