mbed library sources. Supersedes mbed-src.
Dependents: Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more
targets/TARGET_STM/TARGET_STM32L1/TARGET_XDOT_L151CC/xdot_low_power.c
- Committer:
- AnnaBridge
- Date:
- 2017-10-11
- Revision:
- 175:af195413fb11
- Parent:
- 173:e131a1973e81
- Child:
- 187:0387e8f68319
File content as of revision 175:af195413fb11:
/* mbed Microcontroller Library ******************************************************************************* * Copyright (c) 2016, MultiTech Systems * All rights reserved. * * 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. Neither the name of MultiTech nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS 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. ******************************************************************************* */ #include "xdot_low_power.h" #include "stdio.h" #include "mbed_debug.h" static uint32_t portA[6]; static uint32_t portB[6]; static uint32_t portC[6]; static uint32_t portH[6]; void xdot_disable_systick_int() { SysTick->CTRL &= ~SysTick_CTRL_TICKINT_Msk; } void xdot_enable_systick_int() { SysTick->CTRL |= SysTick_CTRL_TICKINT_Msk; } void xdot_save_gpio_state() { portA[0] = GPIOA->MODER; portA[1] = GPIOA->OTYPER; portA[2] = GPIOA->OSPEEDR; portA[3] = GPIOA->PUPDR; portA[4] = GPIOA->AFR[0]; portA[5] = GPIOA->AFR[1]; portB[0] = GPIOB->MODER; portB[1] = GPIOB->OTYPER; portB[2] = GPIOB->OSPEEDR; portB[3] = GPIOB->PUPDR; portB[4] = GPIOB->AFR[0]; portB[5] = GPIOB->AFR[1]; portC[0] = GPIOC->MODER; portC[1] = GPIOC->OTYPER; portC[2] = GPIOC->OSPEEDR; portC[3] = GPIOC->PUPDR; portC[4] = GPIOC->AFR[0]; portC[5] = GPIOC->AFR[1]; portH[0] = GPIOH->MODER; portH[1] = GPIOH->OTYPER; portH[2] = GPIOH->OSPEEDR; portH[3] = GPIOH->PUPDR; portH[4] = GPIOH->AFR[0]; portH[5] = GPIOH->AFR[1]; } void xdot_restore_gpio_state() { GPIOA->MODER = portA[0]; GPIOA->OTYPER = portA[1]; GPIOA->OSPEEDR = portA[2]; GPIOA->PUPDR = portA[3]; GPIOA->AFR[0] = portA[4]; GPIOA->AFR[1] = portA[5]; GPIOB->MODER = portB[0]; GPIOB->OTYPER = portB[1]; GPIOB->OSPEEDR = portB[2]; GPIOB->PUPDR = portB[3]; GPIOB->AFR[0] = portB[4]; GPIOB->AFR[1] = portB[5]; GPIOC->MODER = portC[0]; GPIOC->OTYPER = portC[1]; GPIOC->OSPEEDR = portC[2]; GPIOC->PUPDR = portC[3]; GPIOC->AFR[0] = portC[4]; GPIOC->AFR[1] = portC[5]; GPIOH->MODER = portH[0]; GPIOH->OTYPER = portH[1]; GPIOH->OSPEEDR = portH[2]; GPIOH->PUPDR = portH[3]; GPIOH->AFR[0] = portH[4]; GPIOH->AFR[1] = portH[5]; } void xdot_enter_stop_mode() { GPIO_InitTypeDef GPIO_InitStruct; // disable ADC and DAC - they can consume power in stop mode ADC1->CR2 &= ~ADC_CR2_ADON; ADC->CCR &= ~ADC_CCR_TSVREFE; DAC->CR &= ~DAC_CR_EN1; DAC->CR &= ~DAC_CR_EN2; // enable ULP and enable fast wakeup HAL_PWREx_EnableUltraLowPower(); HAL_PWREx_EnableFastWakeUp(); // disable HSI, MSI, and LSI if they are running if (RCC->CR & RCC_CR_HSION) { RCC->CR &= ~RCC_CR_HSION; } if (RCC->CR & RCC_CR_MSION) { RCC->CR &= ~RCC_CR_MSION; } if (RCC->CSR & RCC_CSR_LSION) { RCC->CSR &= ~RCC_CSR_LSION; } // configure USBTX & USBRX, LORA SPI, LORA_DIO, LORA_RESET, Secure Element, crystal pins, and SWD pins to analog nopull // the application must do the same with WAKE, GPIO*, UART1_*, I2C_*, and SPI_* // GPIO Ports Clock Enable __GPIOA_CLK_ENABLE(); __GPIOB_CLK_ENABLE(); __GPIOC_CLK_ENABLE(); __GPIOH_CLK_ENABLE(); // USBTX & USBRX to analog nopull GPIO_InitStruct.Pin = GPIO_PIN_2 | GPIO_PIN_3; GPIO_InitStruct.Mode = GPIO_MODE_ANALOG; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); // LORA_RESET to analog nopull GPIO_InitStruct.Pin = GPIO_PIN_1; GPIO_InitStruct.Mode = GPIO_MODE_ANALOG; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); // LORA_MISO to analog nopull GPIO_InitStruct.Pin = GPIO_PIN_4; GPIO_InitStruct.Mode = GPIO_MODE_ANALOG; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); // LORA_SCK & LORA_MOSI to input pulldown - additional current draw if left floating GPIO_InitStruct.Pin = GPIO_PIN_3 | GPIO_PIN_5; GPIO_InitStruct.Mode = GPIO_MODE_INPUT; GPIO_InitStruct.Pull = GPIO_PULLDOWN; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); // LORA_NSS to analog nopull GPIO_InitStruct.Pin = GPIO_PIN_15; GPIO_InitStruct.Mode = GPIO_MODE_ANALOG; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); // LORA_DIO0 - LORA_DIO2 to analog nopull GPIO_InitStruct.Pin = GPIO_PIN_6 | GPIO_PIN_7 | GPIO_PIN_8; GPIO_InitStruct.Mode = GPIO_MODE_ANALOG; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); // LORA_DIO3 - LORA_DIO4 to analog nopull GPIO_InitStruct.Pin = GPIO_PIN_6 | GPIO_PIN_7; GPIO_InitStruct.Mode = GPIO_MODE_ANALOG; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); // SE_CTRL, SE_IO, & SE_CLK to analog nopull GPIO_InitStruct.Pin = GPIO_PIN_1 | GPIO_PIN_10 | GPIO_PIN_11; GPIO_InitStruct.Mode = GPIO_MODE_ANALOG; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); // SE_RESET to analog nopull GPIO_InitStruct.Pin = GPIO_PIN_13; GPIO_InitStruct.Mode = GPIO_MODE_ANALOG; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(GPIOC, &GPIO_InitStruct); // SWDIO & SWCLK to analog nopull GPIO_InitStruct.Pin = GPIO_PIN_13 | GPIO_PIN_14; GPIO_InitStruct.Mode = GPIO_MODE_ANALOG; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); // OSC32_IN & OSC32_OUT to analog nopull GPIO_InitStruct.Pin = GPIO_PIN_14 | GPIO_PIN_15; GPIO_InitStruct.Mode = GPIO_MODE_ANALOG; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(GPIOC, &GPIO_InitStruct); // OSC_IN & OSC_OUT to analog nopull GPIO_InitStruct.Pin = GPIO_PIN_0 | GPIO_PIN_1; GPIO_InitStruct.Mode = GPIO_MODE_ANALOG; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(GPIOH, &GPIO_InitStruct); // done configuring pins to analog nopull // make sure wakeup flag is cleared PWR->CR |= PWR_CR_CWUF; // enter stop mode - don't execute past here until woken up HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI); RCC_ClkInitTypeDef RCC_ClkInitStruct; RCC_OscInitTypeDef HSERCC_OscInitStruct; /* Enable HSE and HSI48 oscillators and activate PLL with HSE as source */ HSERCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE | RCC_OSCILLATORTYPE_HSI; HSERCC_OscInitStruct.HSEState = RCC_HSE_ON; /* External 24 MHz xtal on OSC_IN/OSC_OUT */ HSERCC_OscInitStruct.HSIState = RCC_HSI_OFF; // SYSCLK = 32 MHz ((24 MHz * 4) / 3) // USBCLK = 48 MHz ((24 MHz * 4) / 2) --> USB OK HSERCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; HSERCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; HSERCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL4; HSERCC_OscInitStruct.PLL.PLLDIV = RCC_PLL_DIV3; if (HAL_RCC_OscConfig(&HSERCC_OscInitStruct) != HAL_OK) { debug("OSC initialization failed - initiating soft reset\r\n"); NVIC_SystemReset(); } /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 clocks dividers */ RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2); RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; // 32 MHz RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; // 32 MHz RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1; // 32 MHz RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; // 32 MHz if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK) { debug("PLL initialization failed - initiating soft reset\r\n"); NVIC_SystemReset(); } /* Enable the HSI for ADC peripherals */ RCC_OscInitTypeDef HSIRCC_OscInitStruct; HAL_RCC_GetOscConfig(&HSIRCC_OscInitStruct); if ( HSIRCC_OscInitStruct.HSIState != RCC_HSI_ON ) { HSIRCC_OscInitStruct.HSIState = RCC_HSI_ON; HSIRCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI; HSIRCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; HAL_StatusTypeDef ret = HAL_RCC_OscConfig(&HSIRCC_OscInitStruct); if ( ret != HAL_OK ) { debug("HSI initialization failed - ADC will not function properly\r\n"); } } SystemCoreClockUpdate(); // clear wakeup flag in power control register PWR->CR |= PWR_CR_CWUF; // enable the ADC and DAC ADC->CCR |= ADC_CCR_TSVREFE; ADC1->CR2 |= ADC_CR2_ADON; DAC->CR |= DAC_CR_EN1; DAC->CR |= DAC_CR_EN2; } void xdot_enter_standby_mode() { // enable ULP and enable fast wakeup HAL_PWREx_EnableUltraLowPower(); HAL_PWREx_EnableFastWakeUp(); // disable HSI, MSI, and LSI if they are running if (RCC->CR & RCC_CR_HSION) RCC->CR &= ~RCC_CR_HSION; if (RCC->CR & RCC_CR_MSION) RCC->CR &= ~RCC_CR_MSION; if (RCC->CSR & RCC_CSR_LSION) RCC->CSR &= ~RCC_CSR_LSION; // make sure wakeup and standby flags are cleared PWR->CR |= PWR_CR_CWUF; PWR->CR |= PWR_CR_CSBF; // enter standby mode HAL_PWR_EnterSTANDBYMode(); } void xdot_enable_standby_wake_pin() { HAL_PWR_EnableWakeUpPin(PWR_WAKEUP_PIN1); } void xdot_disable_standby_wake_pin() { HAL_PWR_DisableWakeUpPin(PWR_WAKEUP_PIN1); }