Optimization in write operations of the MMC_SPI driver.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@3953 35acf78f-673a-0410-8e92-d51de3d6d3f4

2 files changed, 6 insertions, 4 deletions

diff --git a/os/hal/src/mmc_spi.c b/os/hal/src/mmc_spi.c
index 06f2594bf..079dcf3c0 100644
--- a/os/hal/src/mmc_spi.c
+++ b/os/hal/src/mmc_spi.c
@@ -665,10 +665,8 @@ bool_t mmcSequentialWrite(MMCDriver *mmcp, const uint8_t *buffer) {
   spiSend(mmcp->spip, MMC_SECTOR_SIZE, buffer);     /* Data.                */

   spiIgnore(mmcp->spip, 2);                         /* CRC ignored.         */

   spiReceive(mmcp->spip, 1, b);

-  if ((b[0] & 0x1F) == 0x05) {

-    wait(mmcp);

+  if ((b[0] & 0x1F) == 0x05)

     return FALSE;

-  }

 

   /* Error.*/

   spiUnselect(mmcp->spip);

@@ -701,6 +699,10 @@ bool_t mmcStopSequentialWrite(MMCDriver *mmcp) {
   }

   chSysUnlock();

 

+  /* Wait completion of the last write operation.*/

+  wait(mmcp);

+

+  /* Semd stop command.*/

   spiSend(mmcp->spip, sizeof(stop), stop);

   spiUnselect(mmcp->spip);

 

diff --git a/todo.txt b/todo.txt
index 32c58b9b2..6a866d69a 100644
--- a/todo.txt
+++ b/todo.txt
@@ -15,6 +15,7 @@ Within 2.5.x:
 * Revision of scheduling strategy for threads at equal priority.

 * Handling of Virtual Timer callbacks out of critical zone.

 * Add normal API (not iclass) variants of the VT functions.

+* MMC_SPI driver speedup.

 - Add the RTC service inside the kernel and port, remove from HAL.

 - Add option to use the RTC counter instead of the systick counter into the

   trace buffer.

@@ -27,7 +28,6 @@ Within 2.5.x:
 - Runtime errors manager in HAL.

 - Critical errors manager in HAL (to replace or complement assertions).

 - Streaming DAC/I2S driver model and STM32 implementation.

-- MMC_SPI driver speedup.

 - USB driver model revision.

 - MAC driver for STM32F107, STM32F2xx, STM32F4xx.

 - STM32 OTG USB cell support for CL, F2, F4 devices.