EXT_WAKEUP test minor improvements.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@3374 35acf78f-673a-0410-8e92-d51de3d6d3f4

1 files changed, 12 insertions, 9 deletions

diff --git a/testhal/STM32F1xx/EXT_WAKEUP/main.c b/testhal/STM32F1xx/EXT_WAKEUP/main.c
index 522edde72..986721fc9 100644
--- a/testhal/STM32F1xx/EXT_WAKEUP/main.c
+++ b/testhal/STM32F1xx/EXT_WAKEUP/main.c
@@ -17,6 +17,13 @@
     You should have received a copy of the GNU General Public License

     along with this program.  If not, see <http://www.gnu.org/licenses/>.

 */

+

+/**

+ * This program demonstrate how to use interrupt from EXTI line for waking

+ * up MCU from stop mode. EXTI line connected to UART RX pin and generate

+ * interrupt on falling edge of start bit.

+ */

+

 #include "ch.h"

 #include "hal.h"

 

@@ -32,7 +39,7 @@ static void extcb2(EXTDriver *extp, expchannel_t channel) {
   (void)channel;

 

   chSysLockFromIsr();

-  /* we MUST reinit clocks after waking up if use HSE or HSI+PLL */

+  /* we must reinit clocks after waking up ESPECIALLY if use HSE or HSI+PLL */

   stm32_clock_init();

 

   extChannelDisableI(&EXTD1, 10);

@@ -142,23 +149,19 @@ int main(void) {
   /* Activates the serial driver using the driver default configuration. */

   sdStart(&SD1, NULL);

 

-  /* Shell manager initialization. */

-  shellInit();

+  /* Setting up ports. */

   palSetPadMode(IOPORT1, 9, PAL_MODE_STM32_ALTERNATE_PUSHPULL);

   palSetPadMode(IOPORT1, 10, PAL_MODE_INPUT);

 

+  /* Shell manager initialization. */

+  shellInit();

   static WORKING_AREA(waShell, 512);

   shellCreateStatic(&shell_cfg1, waShell, sizeof(waShell), NORMALPRIO);

 

-  /*

-   * Normal main() thread activity, in this demo it enables and disables the

-   * button EXT channel using 5 seconds intervals.

-   */

-  

+  /* Start blink indicating. */

   chThdSleepMilliseconds(2000); // timeuot to differ reboot and wake up from sleep

   while (TRUE) {

     chThdSleepMilliseconds(100);

     palTogglePad(IOPORT3, GPIOC_LED);

-    chThdExit(0);

   }

 }