/** **************************************************************************************** * @brief Restore from low power mode * @param[in] callback callback before XTAL clock ready * @description * This function is used to set MCU restoring from low power mode, switch system clock to XTAL. ***************************************************************************************** */ void restore_from_low_power_mode(void (*callback)(void)) { syscon_SetPGCR2WithMask(QN_SYSCON, SYSCON_MASK_PD_STATE|SYSCON_MASK_DVDD12_PMU_SET, MASK_DISABLE); if (callback != NULL) { callback(); } // 16MHz/32MHz XTAL is ready while (!(syscon_GetBLESR(QN_SYSCON) & SYSCON_MASK_CLK_RDY)) { // XTAL shall be ready before BLE wakeup if (check_ble_wakeup()) { // In this case XTAL wakeup duration is larger than setting. // The parameter 'Oscillator wake-up time' in the NVDS should be revised. #if (QN_DBG_INFO) set_dbg_info(QN_DBG_INFO_XTAL_WAKEUP_DURATION); #endif } } //syscon_SetCMDCRWithMask(QN_SYSCON, SYSCON_MASK_CLK_MUX, CLK_XTAL<<SYSCON_POS_CLK_MUX); syscon_set_sysclk_src(CLK_XTAL, __XTAL); syscon_set_ahb_clk(__AHB_CLK); syscon_set_apb_clk(__APB_CLK); }
void sleep_timer_set(uint32_t time) { // TBC // ble interrupt mask *(volatile uint32_t *)(0x2f00000c) |= 0x4; // correction sleep time *(volatile uint32_t *)(0x2f000030) = (*(volatile uint32_t *)(0x2f000030) & (~0x8)) | 0x8; // sleep time *(volatile uint32_t *)(0x2f000034) = time; // enable sleep *(volatile uint32_t *)(0x2f000030) = (*(volatile uint32_t *)(0x2f000030) & (~0x4)) | 0x4; // OSC SLEEP EN *(volatile uint32_t *)(0x2f000030) = (*(volatile uint32_t *)(0x2f000030) & (~0x3)) | 0x1; //delay(5000); while (syscon_GetBLESR(QN_SYSCON) & SYSCON_MASK_OSC_EN); }
/** **************************************************************************************** * @brief Enable sleep mode * @param[in] mode sleep mode * @param[in] iconfig wakeup interrupt config * @param[in] callback callback after wakeup * @description * This function is used to set MCU into sleep mode, before enter sleep, wakeup source should be set. ***************************************************************************************** */ void enter_sleep(enum SLEEP_MODE mode, uint32_t iconfig, void (*callback)(void)) { if (mode == SLEEP_CPU_CLK_OFF) { // -------------------------------------------- // cpu clock disable // -------------------------------------------- // Ensure we use deep SLEEP - SLEEPDEEP should be set // SCR[2] = SLEEPDEEP SCB->SCR |= (1UL << 2); // set pd state to deep gating syscon_SetPGCR2WithMask(QN_SYSCON, SYSCON_MASK_PD_STATE|SYSCON_MASK_PMUENABLE, MASK_DISABLE); GLOBAL_INT_DISABLE(); #if SLEEP_CONFIG_EN == TRUE NVIC->ISER[0] = iconfig; #endif // Wait For Interrupt __WFI(); // Enter sleep mode // Wakeup when interrupt is triggered GLOBAL_INT_RESTORE(); // TODO } else if ((mode == SLEEP_NORMAL) || (mode == SLEEP_DEEP)) { #if QN_LOW_POWER_MODE_EN==TRUE enter_low_power_mode(0); // -------------------------------------------- // cpu clock disable // -------------------------------------------- // Ensure we use deep SLEEP - SLEEPDEEP should be set // SCR[2] = SLEEPDEEP SCB->SCR |= (1UL << 2); #else // -------------------------------------------- // sleep or deep sleep // -------------------------------------------- #ifdef BLE_PRJ // Save configuration before power down save_ble_setting(); #endif #if (defined(QN_9020_B1) && QN_PMU_VOLTAGE) // Switch off REF PLL power syscon_SetPGCR1WithMask(QN_SYSCON, SYSCON_MASK_DIS_REF_PLL, MASK_ENABLE); #endif // switch to internal 20MHz syscon_SetCMDCRWithMask(QN_SYSCON, SYSCON_MASK_CLK_MUX, CLK_INT_20M<<SYSCON_POS_CLK_MUX); if(mode == SLEEP_NORMAL) { #if (QN_DEEP_SLEEP_EN) sleep_env.deep_sleep = false; #endif // power down all module in sleep except 32K and retention memory syscon_SetPGCR0WithMask(QN_SYSCON, sleep_env.retention_modules|0x00000001, 0x00000001); } else { #if (QN_DEEP_SLEEP_EN) sleep_env.deep_sleep = true; #endif // power down all module in deep sleep except retention memory #if (defined(QN_9020_B2) || defined(QN_9020_B1)) syscon_SetPGCR0WithMask(QN_SYSCON, 0xF7FFFCFF, 0xFFFFFC01|~sleep_env.retention_modules); #elif defined(QN_9020_B0) syscon_SetPGCR0WithMask(QN_SYSCON, 0xFFFFFCFF, 0xFFFFFC01|~sleep_env.retention_modules); #endif } #if (defined(QN_9020_B0) && QN_PMU_VOLTAGE) syscon_SetCMDCRWithMask(QN_SYSCON, SYSCON_MASK_AHB_DIV_BYPASS|SYSCON_MASK_AHB_DIVIDER, (0xf<<SYSCON_POS_AHB_DIVIDER)); #endif // Ensure we use deep SLEEP - SLEEPDEEP should be set // SCR[2] = SLEEPDEEP SCB->SCR |= (1UL << 2); // set pd state to sleep #if !QN_PMU_VOLTAGE syscon_SetPGCR2WithMask(QN_SYSCON, SYSCON_MASK_PD_STATE|SYSCON_MASK_DVDD12_PMU_SET|SYSCON_MASK_PMUENABLE, MASK_ENABLE); #else syscon_SetPGCR2WithMask(QN_SYSCON, SYSCON_MASK_PD_STATE|SYSCON_MASK_PMUENABLE, MASK_ENABLE); #endif syscon_SetIvrefX32WithMask(QN_SYSCON, SYSCON_MASK_VREG12_A|SYSCON_MASK_VREG12_D|SYSCON_MASK_DVDD12_SW_EN, (0x0 << SYSCON_POS_VREG12_A)|(0x0 << SYSCON_POS_VREG12_D)); #endif // QN_LOW_POWER_MODE_EN==TRUE #if SLEEP_CONFIG_EN == TRUE NVIC->ICPR[0] = 0x00000020; // clear OSC_EN pending flag NVIC->ISER[0] = iconfig; #endif // Wait For Interrupt __WFI(); // Enter sleep mode // Wakeup when sleep timer, comparator or gpio is triggered // Disable interrupt in the wakeup procedure. NVIC->ICER[0] = iconfig; #if QN_LOW_POWER_MODE_EN==TRUE #ifdef BLE_PRJ restore_from_low_power_mode(NULL); #else restore_from_low_power_mode(callback); #endif #else // 1.2V syscon_SetIvrefX32WithMask(QN_SYSCON, SYSCON_MASK_VREG12_A|SYSCON_MASK_VREG12_D|SYSCON_MASK_DVDD12_SW_EN, (0x1 << SYSCON_POS_VREG12_A)|(0x0 << SYSCON_POS_VREG12_D)|SYSCON_MASK_DVDD12_SW_EN); #if (defined(QN_9020_B0) && QN_PMU_VOLTAGE) syscon_SetCMDCRWithMask(QN_SYSCON, SYSCON_MASK_AHB_DIV_BYPASS, MASK_ENABLE); #endif syscon_SetPGCR2WithMask(QN_SYSCON, SYSCON_MASK_PD_STATE|SYSCON_MASK_DVDD12_PMU_SET, MASK_DISABLE); #if SLEEP_CALLBACK_EN == TRUE if (callback != NULL) { callback(); } #endif #if (defined(QN_9020_B0) && QN_PMU_VOLTAGE) syscon_set_ahb_clk(__AHB_CLK); #endif // 16MHz/32MHz XTAL is ready while (!(syscon_GetBLESR(QN_SYSCON) & SYSCON_MASK_CLK_RDY)) { // XTAL shall be ready before BLE wakeup if(check_ble_wakeup()) { // In this case XTAL wakeup duration is larger than setting. // The parameter 'Oscillator wake-up time' in the NVDS should be revised. #if (QN_DBG_INFO) set_dbg_info(QN_DBG_INFO_XTAL_WAKEUP_DURATION); #endif } } syscon_SetCMDCRWithMask(QN_SYSCON, SYSCON_MASK_CLK_MUX, CLK_XTAL<<SYSCON_POS_CLK_MUX); #endif // QN_LOW_POWER_MODE_EN==TRUE #if ((defined(QN_9020_B2) || defined(QN_9020_B1)) && defined(BLE_PRJ)) sleep_post_process(); #endif } }