TI中文支持网如题，我想在进入PM2或PM2之前把不用的IO口全部配置成上拉输入。在这里我存在两个问题：
1、这个不用的IO口是不是也包括了P2_3、P2_4这两个连接晶振的IO口以及P2_1、P2_2这两个下载口。
2、从PM2或PM3中复原之后，我是不是还需要手动把这些IO重新配置成正常的状态
Alvin Chen：
晶振的不能动,其他随便改,需要手动复原.
user5281211：
回复 Alvin Chen:
有个问题是，P2_1、P2_2协议栈本来是配置成什么状态才用作正常的调试啊
Alvin Chen：
回复 user5281211:
Debug mode is entered by forcing two falling-edge transitions on pin P2.2 (debug clock) while the
RESET_N input is held low. When RESET_N is set high, the device is in debug mode.
On entering debug mode, the CPU is in the halted state with the program counter reset to address
0x0000.
While in debug mode, pin P2.1 is the debug-data bidirectional pin, and P2.2 is the debug-clock input pin
低功耗不用管DEBUG和晶振不要随便改。
user5281211：
回复 Alvin Chen:
好的，还有两个问题：
1）由于在PM2中，睡眠、唤醒交替发生比较频繁，那我随之进行IO口配置也比较频繁，请问这不会有产生什么不好的影响吧。
2）复原IO的配置函数应该放在程序的哪个地方，即协议栈程序中的哪行代码意味着芯片已经唤醒，我理解的是
void halSleep( uint32 osal_timeout ){ uint32 timeout; uint32 macTimeout = 0;
/* get next OSAL timer expiration converted to 320 usec units */ timeout = HAL_SLEEP_MS_TO_320US(osal_timeout); if (timeout == 0) { timeout = MAC_PwrNextTimeout(); } else { /* get next MAC timer expiration */ macTimeout = MAC_PwrNextTimeout();
/* get lesser of two timeouts */ if ((macTimeout != 0) && (macTimeout < timeout)) { timeout = macTimeout; } }
/* HAL_SLEEP_PM2 is entered only if the timeout is zero and * the device is a stimulated device. */ halPwrMgtMode = (timeout == 0) ? HAL_SLEEP_DEEP : HAL_SLEEP_TIMER;
/* DEEP sleep can only be entered when zgPollRate == 0. * This is to eliminate any possibility of entering PM3 between * two network timers. */#if ZG_BUILD_ENDDEVICE_TYPE && defined (NWK_AUTO_POLL) if ((timeout > HAL_SLEEP_MS_TO_320US(PM_MIN_SLEEP_TIME)) || (timeout == 0 && zgPollRate == 0))#else if ((timeout > HAL_SLEEP_MS_TO_320US(PM_MIN_SLEEP_TIME)) || (timeout == 0))#endif { halIntState_t ien0, ien1, ien2;
HAL_ASSERT(HAL_INTERRUPTS_ARE_ENABLED()); HAL_DISABLE_INTERRUPTS();
/* always use "deep sleep" to turn off radio VREG on CC2530 */ if (halSleepPconValue != 0 && MAC_PwrOffReq(MAC_PWR_SLEEP_DEEP) == MAC_SUCCESS) { /* The PCON value is not zero. There is no interrupt overriding the * sleep decision. Also, the radio granted the sleep request. */
#if ((defined HAL_KEY) && (HAL_KEY == TRUE)) /* get peripherals ready for sleep */ HalKeyEnterSleep();#endif
#ifdef HAL_SLEEP_DEBUG_LED HAL_TURN_OFF_LED3();#else /* use this to turn LEDs off during sleep */ HalLedEnterSleep();#endif if(timeout > maxSleepLoopTime) { timeout = maxSleepLoopTime; } do { /* enable sleep timer interrupt */ if(timeout != 0) { if (timeout > HAL_SLEEP_MS_TO_320US( MAX_SLEEP_TIME )) { timeout -= HAL_SLEEP_MS_TO_320US( MAX_SLEEP_TIME ); halSleepSetTimer(HAL_SLEEP_MS_TO_320US( MAX_SLEEP_TIME )); } else { /* set sleep timer */ halSleepSetTimer(timeout); timeout = 0; } /* set up sleep timer interrupt */ HAL_SLEEP_TIMER_CLEAR_INT(); HAL_SLEEP_TIMER_ENABLE_INT(); }
#ifdef HAL_SLEEP_DEBUG_LED if (halPwrMgtMode == CC2530_PM1) { HAL_TURN_ON_LED1(); } else { HAL_TURN_OFF_LED1(); }#endif /* Prep CC2530 power mode */ HAL_SLEEP_PREP_POWER_MODE(halPwrMgtMode);
/* save interrupt enable registers and disable all interrupts */ HAL_SLEEP_IE_BACKUP_AND_DISABLE(ien0, ien1, ien2); HAL_ENABLE_INTERRUPTS();
/* set CC2530 power mode, interrupt is disabled after this function * Note that an ISR (that could wake up from power mode) which runs * between the previous instruction enabling interrupts and before * power mode is set would switch the halSleepPconValue so that * power mode shall not be entered in such a case. */ HAL_SLEEP_SET_POWER_MODE(); /* the interrupt is disabled – see halSetSleepMode() */ /* restore interrupt enable registers */ HAL_SLEEP_IE_RESTORE(ien0, ien1, ien2);
/* disable sleep timer interrupt */ HAL_SLEEP_TIMER_DISABLE_INT();
#ifdef HAL_SLEEP_DEBUG_LED HAL_TURN_ON_LED3();#else /* use this to turn LEDs back on after sleep */ HalLedExitSleep();#endif
#if ((defined HAL_KEY) && (HAL_KEY == TRUE)) /* handle peripherals */ if(HalKeyExitSleep()) { break; }#endif
} while(timeout != 0);
/* power on the MAC; blocks until completion */ MAC_PwrOnReq();
HAL_ENABLE_INTERRUPTS();
/* For CC2530, T2 interrupt won抰 be generated when the current count is greater than * the comparator. The interrupt is only generated when the current count is equal to * the comparator. When the CC2530 is waking up from sleep, there is a small window * that the count may be grater than the comparator, therefore, missing the interrupt. * This workaround will call the T2 ISR when the current T2 count is greater than the * comparator. The problem only occurs when POWER_SAVING is turned on, i.e. the 32KHz * drives the chip in sleep and SYNC start is used. */ macMcuTimer2OverflowWorkaround(); } else { /* An interrupt may have changed the sleep decision. Do not sleep at all. Turn on * the interrupt, exit normally, and the next sleep will be allowed. */ HAL_ENABLE_INTERRUPTS(); } }}
中标红的这一句，请问是否正确
YiKai Chen：
回复 user5281211:
1. 不會
2. 建議放在HAL_ENABLE_INTERRUPTS()之後
