例程包没有专门的例程，但是KEA系列低功耗模式相对简单，你可以使用以下代码进入stop，wait模式
- /***********************************************************************/
- /*
- * Configures the ARM system control register for STOP (deep sleep) mode
- * and then executes the WFI instruction to enter the mode.
- *
- * Parameters:
- * none
- *
- * Note: Might want to change this later to allow for passing in a parameter
- * to optionally set the sleep on exit bit.
- */
- void stop (void)
- {
- /* Set the SLEEPDEEP bit to enable deep sleep mode (STOP) */
- SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
- /* WFI instruction will start entry into STOP mode */
- #ifndef KEIL
- // If not using KEIL's uVision use the standard assembly command
- asm("WFI");
- #else
- // If using KEIL's uVision, use the CMSIS intrinsic
- __wfi();
- #endif
- }
- /***********************************************************************/
- /*
- * Configures the ARM system control register for WAIT (sleep) mode
- * and then executes the WFI instruction to enter the mode.
- *
- * Parameters:
- * none
- *
- * Note: Might want to change this later to allow for passing in a parameter
- * to optionally set the sleep on exit bit.
- */
- void wait (void)
- {
- /* Clear the SLEEPDEEP bit to make sure we go into WAIT (sleep) mode instead
- * of deep sleep.
- */
- SCB->SCR &= ~SCB_SCR_SLEEPDEEP_Msk;
- /* WFI instruction will start entry into WAIT mode */
- #ifndef KEIL
- // If not using KEIL's uVision use the standard assembly command
- asm("WFI");
- #else
- // If using KEIL's uVision, use the CMSIS intrinsic
- __wfi();
- #endif
- }
| 
楼主
