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Color Oled(SSD1331) connect to STMicroelectronics Nucleo-F466
Diff: mbed-os/targets/TARGET_Atmel/TARGET_SAM_CortexM4/drivers/pmc/sleep.c
- Revision:
- 0:8fdf9a60065b
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-os/targets/TARGET_Atmel/TARGET_SAM_CortexM4/drivers/pmc/sleep.c Wed Oct 10 00:33:53 2018 +0000 @@ -0,0 +1,389 @@ +/** + * \file + * + * \brief Sleep mode access + * + * Copyright (c) 2012-2015 Atmel Corporation. All rights reserved. + * + * \asf_license_start + * + * \page License + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * 3. The name of Atmel may not be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * 4. This software may only be redistributed and used in connection with an + * Atmel microcontroller product. + * + * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE + * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * \asf_license_stop + * + */ +/* + * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a> + */ + +#include <compiler.h> +#include "mbed_power_mgmt.h" + +/* SAM3 and SAM4 series */ +#if (SAM3S || SAM3N || SAM3XA || SAM3U || SAM4S || SAM4E || SAM4N || SAM4C || \ + SAM4CM || SAMG || SAM4CP || SAMV71 || SAMV70 || SAMS70 || SAME70) +# include "pmc.h" +# include "board.h" + +/* Checking board configuration of main clock xtal statup time */ +#if !defined(BOARD_OSC_STARTUP_US) +# warning The board main clock xtal statup time has not been defined. Using default settings. +# define BOARD_OSC_STARTUP_US (15625UL) +#endif + +#if !defined(EFC0) +# define EFC0 EFC +#endif + +/** + * Save clock settings and shutdown PLLs + */ +__always_inline static void pmc_save_clock_settings( + uint32_t *p_osc_setting, + uint32_t *p_pll0_setting, + uint32_t *p_pll1_setting, + uint32_t *p_mck_setting, + uint32_t *p_fmr_setting, +#if defined(EFC1) + uint32_t *p_fmr_setting1, +#endif + const bool disable_xtal) +{ + uint32_t mor = PMC->CKGR_MOR; + uint32_t mckr = PMC->PMC_MCKR; + uint32_t fmr = EFC0->EEFC_FMR; +# if defined(EFC1) + uint32_t fmr1 = EFC1->EEFC_FMR; +# endif + + if (p_osc_setting) { + *p_osc_setting = mor; + } + if (p_pll0_setting) { + *p_pll0_setting = PMC->CKGR_PLLAR; + } + if (p_pll1_setting) { +#if (SAM3S || SAM4S || SAM4C || SAM4CM || SAM4CP) + *p_pll1_setting = PMC->CKGR_PLLBR; +#elif (SAM3U || SAM3XA) + *p_pll1_setting = PMC->CKGR_UCKR; +#else + *p_pll1_setting = 0; +#endif + } + if (p_mck_setting) { + *p_mck_setting = mckr; + } + if (p_fmr_setting) { + *p_fmr_setting = fmr; + } +#if defined(EFC1) + if (p_fmr_setting1) { + *p_fmr_setting1 = fmr1; + } +#endif + + /* Enable FAST RC */ + PMC->CKGR_MOR = CKGR_MOR_KEY_PASSWD | mor | CKGR_MOR_MOSCRCEN; + /* if MCK source is PLL, switch to mainck */ + if ((mckr & PMC_MCKR_CSS_Msk) > PMC_MCKR_CSS_MAIN_CLK) { + /* MCK -> MAINCK */ + mckr = (mckr & (~PMC_MCKR_CSS_Msk)) | PMC_MCKR_CSS_MAIN_CLK; + PMC->PMC_MCKR = mckr; + while(!(PMC->PMC_SR & PMC_SR_MCKRDY)); + } + /* MCK prescale -> 1 */ + if (mckr & PMC_MCKR_PRES_Msk) { + mckr = (mckr & (~PMC_MCKR_PRES_Msk)); + PMC->PMC_MCKR = mckr; + while(!(PMC->PMC_SR & PMC_SR_MCKRDY)); + } + /* Disable PLLs */ + pmc_disable_pllack(); +#if (SAM3S || SAM4S || SAM4C || SAM4CM || SAM4CP) + pmc_disable_pllbck(); +#elif (SAM3U || SAM3XA) + pmc_disable_upll_clock(); +#endif + + /* Prepare for entering WAIT mode */ + /* Wait fast RC ready */ + while (!(PMC->PMC_SR & PMC_SR_MOSCRCS)); + + /* Switch mainck to FAST RC */ +#if SAMG + /** + * For the sleepwalking feature, we need an accurate RC clock. Only 24M and + * 16M are trimmed in production. Here we select the 24M. + * And so wait state need to be 1. + */ + EFC0->EEFC_FMR = (fmr & (~EEFC_FMR_FWS_Msk)) | EEFC_FMR_FWS(1); + + PMC->CKGR_MOR = (PMC->CKGR_MOR & ~CKGR_MOR_MOSCSEL) | CKGR_MOR_MOSCRCF_24_MHz | + CKGR_MOR_KEY_PASSWD; +#else + PMC->CKGR_MOR = (PMC->CKGR_MOR & ~CKGR_MOR_MOSCSEL) | + CKGR_MOR_KEY_PASSWD; +#endif + while (!(PMC->PMC_SR & PMC_SR_MOSCSELS)); + +#if (!SAMG) + /* FWS update */ + EFC0->EEFC_FMR = fmr & (~EEFC_FMR_FWS_Msk); +#if defined(EFC1) + EFC1->EEFC_FMR = fmr1 & (~EEFC_FMR_FWS_Msk); +#endif +#endif + + /* Disable XTALs */ + if (disable_xtal) { + PMC->CKGR_MOR = (PMC->CKGR_MOR & ~CKGR_MOR_MOSCXTEN) | + CKGR_MOR_KEY_PASSWD; + } +} + +/** + * Restore clock settings + */ +__always_inline static void pmc_restore_clock_setting( + const uint32_t osc_setting, + const uint32_t pll0_setting, + const uint32_t pll1_setting, + const uint32_t mck_setting, + const uint32_t fmr_setting +#if defined(EFC1) + , const uint32_t fmr_setting1 +#endif +) +{ + uint32_t mckr; + uint32_t pll_sr = 0; + + /* Switch mainck to external xtal */ + if (CKGR_MOR_MOSCXTBY == (osc_setting & CKGR_MOR_MOSCXTBY)) { + /* Bypass mode */ + PMC->CKGR_MOR = (PMC->CKGR_MOR & ~CKGR_MOR_MOSCXTEN) | + CKGR_MOR_KEY_PASSWD | CKGR_MOR_MOSCXTBY | + CKGR_MOR_MOSCSEL; + PMC->CKGR_MOR = (PMC->CKGR_MOR & ~CKGR_MOR_MOSCRCEN & + ~CKGR_MOR_MOSCRCF_Msk) + | CKGR_MOR_KEY_PASSWD; + } else if (CKGR_MOR_MOSCXTEN == (osc_setting & CKGR_MOR_MOSCXTEN)) { + /* Enable External XTAL */ + if (!(PMC->CKGR_MOR & CKGR_MOR_MOSCXTEN)) { + PMC->CKGR_MOR = (PMC->CKGR_MOR & ~CKGR_MOR_MOSCXTBY) | + CKGR_MOR_KEY_PASSWD | CKGR_MOR_MOSCXTEN; + /* Wait the Xtal to stabilize */ + while (!(PMC->PMC_SR & PMC_SR_MOSCXTS)); + } + /* Select External XTAL */ + if (!(PMC->CKGR_MOR & CKGR_MOR_MOSCSEL)) { + PMC->CKGR_MOR |= CKGR_MOR_KEY_PASSWD | CKGR_MOR_MOSCSEL; + while (!(PMC->PMC_SR & PMC_SR_MOSCSELS)); + } + /* Disable Fast RC */ + PMC->CKGR_MOR = (PMC->CKGR_MOR & ~CKGR_MOR_MOSCRCEN & + ~CKGR_MOR_MOSCRCF_Msk) + | CKGR_MOR_KEY_PASSWD; + } + + if (pll0_setting & CKGR_PLLAR_MULA_Msk) { +#if (SAM4C || SAM4CM || SAMG || SAM4CP) + PMC->CKGR_PLLAR = pll0_setting; +#else + PMC->CKGR_PLLAR = CKGR_PLLAR_ONE | pll0_setting; +#endif + pll_sr |= PMC_SR_LOCKA; + } +#if (SAM3S || SAM4S || SAM4C || SAM4CM || SAM4CP) + if (pll1_setting & CKGR_PLLBR_MULB_Msk) { + PMC->CKGR_PLLBR = pll1_setting; + pll_sr |= PMC_SR_LOCKB; + } +#elif (SAM3U || SAM3XA) + if (pll1_setting & CKGR_UCKR_UPLLEN) { + PMC->CKGR_UCKR = pll1_setting; + pll_sr |= PMC_SR_LOCKU; + } +#else + UNUSED(pll1_setting); +#endif + /* Wait MCK source ready */ + switch(mck_setting & PMC_MCKR_CSS_Msk) { + case PMC_MCKR_CSS_PLLA_CLK: + while (!(PMC->PMC_SR & PMC_SR_LOCKA)); + break; +#if (SAM3S || SAM4S || SAM4C || SAM4CM || SAM4CP) + case PMC_MCKR_CSS_PLLB_CLK: + while (!(PMC->PMC_SR & PMC_SR_LOCKB)); + break; +#elif (SAM3U || SAM3XA) + case PMC_MCKR_CSS_UPLL_CLK: + while (!(PMC->PMC_SR & PMC_SR_LOCKU)); + break; +#endif + } + + /* Switch to faster clock */ + mckr = PMC->PMC_MCKR; + + /* Set PRES */ + PMC->PMC_MCKR = (mckr & ~PMC_MCKR_PRES_Msk) + | (mck_setting & PMC_MCKR_PRES_Msk); + while (!(PMC->PMC_SR & PMC_SR_MCKRDY)); + + /* Restore flash wait states */ + EFC0->EEFC_FMR = fmr_setting; +#if defined(EFC1) + EFC1->EEFC_FMR = fmr_setting1; +#endif + + /* Set CSS and others */ + PMC->PMC_MCKR = mck_setting; + while (!(PMC->PMC_SR & PMC_SR_MCKRDY)); + + /* Waiting all restored PLLs ready */ + while (!(PMC->PMC_SR & pll_sr)); +} + +/** If clocks are switched for some sleep mode */ +static volatile bool b_is_sleep_clock_used = false; +/** Callback invoked once when clocks are restored */ +static pmc_callback_wakeup_clocks_restored_t callback_clocks_restored = NULL; + +void pmc_sleep(int sleep_mode) +{ + switch (sleep_mode) { +#if (!(SAMG51 || SAMG53 || SAMG54)) + case SAM_PM_SMODE_SLEEP_WFI: + case SAM_PM_SMODE_SLEEP_WFE: +#if (SAM4S || SAM4E || SAM4N || SAM4C || SAM4CM || SAM4CP || SAMG55 || SAMV71 || SAMV70 || SAMS70 || SAME70) + SCB->SCR &= (uint32_t)~SCR_SLEEPDEEP; + cpu_irq_enable(); + __WFI(); + break; +#else + PMC->PMC_FSMR &= (uint32_t)~PMC_FSMR_LPM; + SCB->SCR &= (uint32_t)~SCR_SLEEPDEEP; + cpu_irq_enable(); + if (sleep_mode == SAM_PM_SMODE_SLEEP_WFI) + __WFI(); + else + __WFE(); + break; +#endif +#endif + + case SAM_PM_SMODE_WAIT_FAST: + case SAM_PM_SMODE_WAIT: { + uint32_t mor, pllr0, pllr1, mckr; + uint32_t fmr; +#if defined(EFC1) + uint32_t fmr1; +#endif +#if (SAM4S || SAM4E || SAM4N || SAM4C || SAM4CM || SAM4CP || SAMG55 || SAMV71 || SAMV70 || SAMS70 || SAME70) + (sleep_mode == SAM_PM_SMODE_WAIT_FAST) ? + pmc_set_flash_in_wait_mode(PMC_FSMR_FLPM_FLASH_STANDBY) : + pmc_set_flash_in_wait_mode(PMC_FSMR_FLPM_FLASH_DEEP_POWERDOWN); +#endif + cpu_irq_disable(); + b_is_sleep_clock_used = true; + +#if (SAM4C || SAM4CM || SAM4CP) + /* Backup the sub-system 1 status and stop sub-system 1 */ + uint32_t cpclk_backup = PMC->PMC_SCSR & + (PMC_SCSR_CPCK | PMC_SCSR_CPBMCK); + PMC->PMC_SCDR = cpclk_backup | PMC_SCDR_CPKEY_PASSWD; +#endif + pmc_save_clock_settings(&mor, &pllr0, &pllr1, &mckr, &fmr, +#if defined(EFC1) + &fmr1, +#endif + (sleep_mode == SAM_PM_SMODE_WAIT)); + + /* Enter wait mode */ + cpu_irq_enable(); + + pmc_enable_waitmode(); + + cpu_irq_disable(); + pmc_restore_clock_setting(mor, pllr0, pllr1, mckr, fmr +#if defined(EFC1) + , fmr1 +#endif + ); + +#if (SAM4C || SAM4CM || SAM4CP) + /* Restore the sub-system 1 */ + PMC->PMC_SCER = cpclk_backup | PMC_SCER_CPKEY_PASSWD; +#endif + b_is_sleep_clock_used = false; + if (callback_clocks_restored) { + callback_clocks_restored(); + callback_clocks_restored = NULL; + } + cpu_irq_enable(); + + break; + } +#if (!(SAMG51 || SAMG53 || SAMG54)) + case SAM_PM_SMODE_BACKUP: + SCB->SCR |= SCR_SLEEPDEEP; +#if (SAM4S || SAM4E || SAM4N || SAM4C || SAM4CM || SAM4CP || SAMG55 || SAMV71 || SAMV70 || SAMS70 || SAME70) + SUPC->SUPC_CR = SUPC_CR_KEY_PASSWD | SUPC_CR_VROFF_STOP_VREG; + cpu_irq_enable(); + __WFI() ; +#else + cpu_irq_enable(); + __WFE() ; +#endif + break; +#endif + } +} + +bool pmc_is_wakeup_clocks_restored(void) +{ + return !b_is_sleep_clock_used; +} + +void pmc_wait_wakeup_clocks_restore( + pmc_callback_wakeup_clocks_restored_t callback) +{ + if (b_is_sleep_clock_used) { + cpu_irq_disable(); + callback_clocks_restored = callback; + } else if (callback) { + callback(); + } +} + +#endif