SPI driver works, probably optimizations are possible.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@11226 35acf78f-673a-0410-8e92-d51de3d6d3f4

1 files changed, 5 insertions, 0 deletions

diff --git a/testhal/STM32/multi/SPI/main.c b/testhal/STM32/multi/SPI/main.c
index fd1d74250..f41e17fc0 100755
--- a/testhal/STM32/multi/SPI/main.c
+++ b/testhal/STM32/multi/SPI/main.c
@@ -41,6 +41,8 @@ static THD_FUNCTION(spi_thread_1, p) {
     spiExchange(&PORTAB_SPI1, 512,

                 txbuf, rxbuf);          /* Atomic transfer operations.      */

     spiUnselect(&PORTAB_SPI1);          /* Slave Select de-assertion.       */

+    dmaBufferInvalidate(&txbuf[0],      /* Cache invalidation over the      */

+                        sizeof txbuf);  /* buffer.                          */

     spiReleaseBus(&PORTAB_SPI1);        /* Ownership release.               */

   }

 }

@@ -61,6 +63,8 @@ static THD_FUNCTION(spi_thread_2, p) {
     spiExchange(&PORTAB_SPI1, 512,

                 txbuf, rxbuf);          /* Atomic transfer operations.      */

     spiUnselect(&PORTAB_SPI1);          /* Slave Select de-assertion.       */

+    dmaBufferInvalidate(&txbuf[0],      /* Cache invalidation over the      */

+                        sizeof txbuf);  /* buffer.                          */

     spiReleaseBus(&PORTAB_SPI1);        /* Ownership release.               */

   }

 }

@@ -107,6 +111,7 @@ int main(void) {
    */

   for (i = 0; i < sizeof(txbuf); i++)

     txbuf[i] = (uint8_t)i;

+  dmaBufferFlush(&txbuf[0], sizeof txbuf);

 

   /*

    * Starting the transmitter and receiver threads.