mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

targets/TARGET_TT/TARGET_TT_M3HQ/sleep.c@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 189:f392fc9709a3 1 /* mbed Microcontroller Library
AnnaBridge 189:f392fc9709a3 2 * (C)Copyright TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION 2018 All rights reserved
AnnaBridge 189:f392fc9709a3 3 * SPDX-License-Identifier: Apache-2.0
AnnaBridge 189:f392fc9709a3 4 * Licensed under the Apache License, Version 2.0 (the "License");
AnnaBridge 189:f392fc9709a3 5 * you may not use this file except in compliance with the License.
AnnaBridge 189:f392fc9709a3 6 * You may obtain a copy of the License at
AnnaBridge 189:f392fc9709a3 7 *
AnnaBridge 189:f392fc9709a3 8 * http://www.apache.org/licenses/LICENSE-2.0
AnnaBridge 189:f392fc9709a3 9 *
AnnaBridge 189:f392fc9709a3 10 * Unless required by applicable law or agreed to in writing, software
AnnaBridge 189:f392fc9709a3 11 * distributed under the License is distributed on an "AS IS" BASIS,
AnnaBridge 189:f392fc9709a3 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
AnnaBridge 189:f392fc9709a3 13 * See the License for the specific language governing permissions and
AnnaBridge 189:f392fc9709a3 14 * limitations under the License.
AnnaBridge 189:f392fc9709a3 15 */
AnnaBridge 189:f392fc9709a3 16 #include "sleep_api.h"
AnnaBridge 189:f392fc9709a3 17 #include "gpio_include.h"
AnnaBridge 189:f392fc9709a3 18
AnnaBridge 189:f392fc9709a3 19 static void warming_up_time(void);
AnnaBridge 189:f392fc9709a3 20
AnnaBridge 189:f392fc9709a3 21 void hal_sleep(void)
AnnaBridge 189:f392fc9709a3 22 {
AnnaBridge 189:f392fc9709a3 23 // Set low power consumption mode IDLE
AnnaBridge 189:f392fc9709a3 24 TSB_CG->STBYCR = CG_STBY_MODE_IDLE;
AnnaBridge 189:f392fc9709a3 25 __DSB(); // Enter idle mode
AnnaBridge 189:f392fc9709a3 26 __WFI();
AnnaBridge 189:f392fc9709a3 27 }
AnnaBridge 189:f392fc9709a3 28
AnnaBridge 189:f392fc9709a3 29 void hal_deepsleep(void)
AnnaBridge 189:f392fc9709a3 30 {
AnnaBridge 189:f392fc9709a3 31 uint32_t tmp;
AnnaBridge 189:f392fc9709a3 32 // WDT sysclock enable
AnnaBridge 189:f392fc9709a3 33 TSB_CG_FSYSENB_IPENB31 = ENABLE;
AnnaBridge 189:f392fc9709a3 34 while ((TSB_FC->SR0 & 0x01) != 0x01); // Flash Wait
AnnaBridge 189:f392fc9709a3 35 // Wait for end of Warming-up for IHOSC1
AnnaBridge 189:f392fc9709a3 36 while(TSB_CG_WUPHCR_WUEF);
AnnaBridge 189:f392fc9709a3 37 // Set Warm-up clock to IHOSC1
AnnaBridge 189:f392fc9709a3 38 TSB_CG_WUPHCR_WUCLK = DISABLE;
AnnaBridge 189:f392fc9709a3 39 // Set Warming-up time (xxxx) for IHOSC1 return from STOP1 mode
AnnaBridge 189:f392fc9709a3 40 warming_up_time();
AnnaBridge 189:f392fc9709a3 41 // Set low power consumption mode STOP1
AnnaBridge 189:f392fc9709a3 42 TSB_CG->STBYCR = CG_STBY_MODE_STOP1;
AnnaBridge 189:f392fc9709a3 43 // Set PLL of fsys to fosc(= PLL no USE)
AnnaBridge 189:f392fc9709a3 44 TSB_CG_PLL0SEL_PLL0SEL = DISABLE;
AnnaBridge 189:f392fc9709a3 45 // Wait for PLL status of fsys until off state(fosc = 0)
AnnaBridge 189:f392fc9709a3 46 while(TSB_CG_PLL0SEL_PLL0ST);
AnnaBridge 189:f392fc9709a3 47 TSB_CG_PLL0SEL_PLL0ON = DISABLE; // Stop PLL of fsys
AnnaBridge 189:f392fc9709a3 48 TSB_CG_OSCCR_IHOSC1EN = ENABLE; // Enable IHOSC1
AnnaBridge 189:f392fc9709a3 49 TSB_CG_OSCCR_OSCSEL = DISABLE; // Set fosc to IHOSC1
AnnaBridge 189:f392fc9709a3 50 while(TSB_CG_OSCCR_OSCF); // Wait for fosc status until IHOSC1
AnnaBridge 189:f392fc9709a3 51 tmp = TSB_CG->OSCCR; // Set EHOSC off
AnnaBridge 189:f392fc9709a3 52 tmp &= EXTERNEL_OSC_MASK;
AnnaBridge 189:f392fc9709a3 53 TSB_CG->OSCCR = tmp;
AnnaBridge 189:f392fc9709a3 54 TSB_CG_OSCCR_IHOSC2EN = DISABLE; //Stop IHOSC2 of OFD
AnnaBridge 189:f392fc9709a3 55 // Wait for status of OFD until off ”0”
AnnaBridge 189:f392fc9709a3 56 while(TSB_CG_OSCCR_IHOSC2F);
AnnaBridge 189:f392fc9709a3 57 __DSB(); // Enter STOP1 mode
AnnaBridge 189:f392fc9709a3 58 __WFI();
AnnaBridge 189:f392fc9709a3 59 }
AnnaBridge 189:f392fc9709a3 60
AnnaBridge 189:f392fc9709a3 61 static void warming_up_time(void)
AnnaBridge 189:f392fc9709a3 62 {
AnnaBridge 189:f392fc9709a3 63 uint32_t work;
AnnaBridge 189:f392fc9709a3 64 uint64_t x;
AnnaBridge 189:f392fc9709a3 65 x = (uint64_t)((uint64_t)(IHOSC_CFG_WARM_UP_TIME) * (uint64_t)(IHOSC_CFG_CLOCK));
AnnaBridge 189:f392fc9709a3 66 x = (uint64_t)(x / (uint64_t)(1000000));
AnnaBridge 189:f392fc9709a3 67 if (x > (uint64_t)(0xFFFF)) {
AnnaBridge 189:f392fc9709a3 68 // invalid value
AnnaBridge 189:f392fc9709a3 69 }
AnnaBridge 189:f392fc9709a3 70 work = (uint32_t)x;
AnnaBridge 189:f392fc9709a3 71 work &= (uint32_t)(0xFFFFFFF0);
AnnaBridge 189:f392fc9709a3 72 work <<= 16;
AnnaBridge 189:f392fc9709a3 73 work |= (uint32_t)(TSB_CG->WUPHCR & ~CGWUPHCR_WUPT_HIGH_MASK);
AnnaBridge 189:f392fc9709a3 74 TSB_CG->WUPHCR = work;
AnnaBridge 189:f392fc9709a3 75 }