mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

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

targets/TARGET_STM/TARGET_STM32L1/TARGET_MTB_MTS_XDOT/xdot_low_power.c@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
Parent:
187:0387e8f68319 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 181:57724642e740 1 /* mbed Microcontroller Library
AnnaBridge 181:57724642e740 2 *******************************************************************************
AnnaBridge 181:57724642e740 3 * Copyright (c) 2016, MultiTech Systems
AnnaBridge 181:57724642e740 4 * All rights reserved.
AnnaBridge 181:57724642e740 5 *
AnnaBridge 181:57724642e740 6 * Redistribution and use in source and binary forms, with or without
AnnaBridge 181:57724642e740 7 * modification, are permitted provided that the following conditions are met:
AnnaBridge 181:57724642e740 8 *
AnnaBridge 181:57724642e740 9 * 1. Redistributions of source code must retain the above copyright notice,
AnnaBridge 181:57724642e740 10 * this list of conditions and the following disclaimer.
AnnaBridge 181:57724642e740 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
AnnaBridge 181:57724642e740 12 * this list of conditions and the following disclaimer in the documentation
AnnaBridge 181:57724642e740 13 * and/or other materials provided with the distribution.
AnnaBridge 181:57724642e740 14 * 3. Neither the name of MultiTech nor the names of its contributors
AnnaBridge 181:57724642e740 15 * may be used to endorse or promote products derived from this software
AnnaBridge 181:57724642e740 16 * without specific prior written permission.
AnnaBridge 181:57724642e740 17 *
AnnaBridge 181:57724642e740 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AnnaBridge 181:57724642e740 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
AnnaBridge 181:57724642e740 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
AnnaBridge 181:57724642e740 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
AnnaBridge 181:57724642e740 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
AnnaBridge 181:57724642e740 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
AnnaBridge 181:57724642e740 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
AnnaBridge 181:57724642e740 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
AnnaBridge 181:57724642e740 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
AnnaBridge 181:57724642e740 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
AnnaBridge 181:57724642e740 28 *******************************************************************************
AnnaBridge 181:57724642e740 29 */
AnnaBridge 181:57724642e740 30
AnnaBridge 181:57724642e740 31 #include "xdot_low_power.h"
AnnaBridge 181:57724642e740 32 #include "stdio.h"
AnnaBridge 181:57724642e740 33 #include "mbed_debug.h"
AnnaBridge 181:57724642e740 34
AnnaBridge 181:57724642e740 35 static uint32_t portA[6];
AnnaBridge 181:57724642e740 36 static uint32_t portB[6];
AnnaBridge 181:57724642e740 37 static uint32_t portC[6];
AnnaBridge 181:57724642e740 38 static uint32_t portH[6];
AnnaBridge 181:57724642e740 39
AnnaBridge 187:0387e8f68319 40 void xdot_disable_systick_int()
AnnaBridge 187:0387e8f68319 41 {
AnnaBridge 181:57724642e740 42 SysTick->CTRL &= ~SysTick_CTRL_TICKINT_Msk;
AnnaBridge 181:57724642e740 43 }
AnnaBridge 181:57724642e740 44
AnnaBridge 187:0387e8f68319 45 void xdot_enable_systick_int()
AnnaBridge 187:0387e8f68319 46 {
AnnaBridge 181:57724642e740 47 SysTick->CTRL |= SysTick_CTRL_TICKINT_Msk;
AnnaBridge 181:57724642e740 48 }
AnnaBridge 181:57724642e740 49
AnnaBridge 187:0387e8f68319 50 void xdot_save_gpio_state()
AnnaBridge 187:0387e8f68319 51 {
AnnaBridge 181:57724642e740 52 portA[0] = GPIOA->MODER;
AnnaBridge 181:57724642e740 53 portA[1] = GPIOA->OTYPER;
AnnaBridge 181:57724642e740 54 portA[2] = GPIOA->OSPEEDR;
AnnaBridge 181:57724642e740 55 portA[3] = GPIOA->PUPDR;
AnnaBridge 181:57724642e740 56 portA[4] = GPIOA->AFR[0];
AnnaBridge 181:57724642e740 57 portA[5] = GPIOA->AFR[1];
AnnaBridge 181:57724642e740 58
AnnaBridge 181:57724642e740 59 portB[0] = GPIOB->MODER;
AnnaBridge 181:57724642e740 60 portB[1] = GPIOB->OTYPER;
AnnaBridge 181:57724642e740 61 portB[2] = GPIOB->OSPEEDR;
AnnaBridge 181:57724642e740 62 portB[3] = GPIOB->PUPDR;
AnnaBridge 181:57724642e740 63 portB[4] = GPIOB->AFR[0];
AnnaBridge 181:57724642e740 64 portB[5] = GPIOB->AFR[1];
AnnaBridge 181:57724642e740 65
AnnaBridge 181:57724642e740 66 portC[0] = GPIOC->MODER;
AnnaBridge 181:57724642e740 67 portC[1] = GPIOC->OTYPER;
AnnaBridge 181:57724642e740 68 portC[2] = GPIOC->OSPEEDR;
AnnaBridge 181:57724642e740 69 portC[3] = GPIOC->PUPDR;
AnnaBridge 181:57724642e740 70 portC[4] = GPIOC->AFR[0];
AnnaBridge 181:57724642e740 71 portC[5] = GPIOC->AFR[1];
AnnaBridge 181:57724642e740 72
AnnaBridge 181:57724642e740 73 portH[0] = GPIOH->MODER;
AnnaBridge 181:57724642e740 74 portH[1] = GPIOH->OTYPER;
AnnaBridge 181:57724642e740 75 portH[2] = GPIOH->OSPEEDR;
AnnaBridge 181:57724642e740 76 portH[3] = GPIOH->PUPDR;
AnnaBridge 181:57724642e740 77 portH[4] = GPIOH->AFR[0];
AnnaBridge 181:57724642e740 78 portH[5] = GPIOH->AFR[1];
AnnaBridge 181:57724642e740 79 }
AnnaBridge 181:57724642e740 80
AnnaBridge 187:0387e8f68319 81 void xdot_restore_gpio_state()
AnnaBridge 187:0387e8f68319 82 {
AnnaBridge 181:57724642e740 83 GPIOA->MODER = portA[0];
AnnaBridge 181:57724642e740 84 GPIOA->OTYPER = portA[1];
AnnaBridge 181:57724642e740 85 GPIOA->OSPEEDR = portA[2];
AnnaBridge 181:57724642e740 86 GPIOA->PUPDR = portA[3];
AnnaBridge 181:57724642e740 87 GPIOA->AFR[0] = portA[4];
AnnaBridge 181:57724642e740 88 GPIOA->AFR[1] = portA[5];
AnnaBridge 181:57724642e740 89
AnnaBridge 181:57724642e740 90 GPIOB->MODER = portB[0];
AnnaBridge 181:57724642e740 91 GPIOB->OTYPER = portB[1];
AnnaBridge 181:57724642e740 92 GPIOB->OSPEEDR = portB[2];
AnnaBridge 181:57724642e740 93 GPIOB->PUPDR = portB[3];
AnnaBridge 181:57724642e740 94 GPIOB->AFR[0] = portB[4];
AnnaBridge 181:57724642e740 95 GPIOB->AFR[1] = portB[5];
AnnaBridge 181:57724642e740 96
AnnaBridge 181:57724642e740 97 GPIOC->MODER = portC[0];
AnnaBridge 181:57724642e740 98 GPIOC->OTYPER = portC[1];
AnnaBridge 181:57724642e740 99 GPIOC->OSPEEDR = portC[2];
AnnaBridge 181:57724642e740 100 GPIOC->PUPDR = portC[3];
AnnaBridge 181:57724642e740 101 GPIOC->AFR[0] = portC[4];
AnnaBridge 181:57724642e740 102 GPIOC->AFR[1] = portC[5];
AnnaBridge 181:57724642e740 103
AnnaBridge 181:57724642e740 104 GPIOH->MODER = portH[0];
AnnaBridge 181:57724642e740 105 GPIOH->OTYPER = portH[1];
AnnaBridge 181:57724642e740 106 GPIOH->OSPEEDR = portH[2];
AnnaBridge 181:57724642e740 107 GPIOH->PUPDR = portH[3];
AnnaBridge 181:57724642e740 108 GPIOH->AFR[0] = portH[4];
AnnaBridge 181:57724642e740 109 GPIOH->AFR[1] = portH[5];
AnnaBridge 181:57724642e740 110 }
AnnaBridge 181:57724642e740 111
AnnaBridge 187:0387e8f68319 112 void xdot_enter_stop_mode()
AnnaBridge 187:0387e8f68319 113 {
AnnaBridge 181:57724642e740 114 GPIO_InitTypeDef GPIO_InitStruct;
AnnaBridge 181:57724642e740 115
AnnaBridge 181:57724642e740 116 // disable ADC and DAC - they can consume power in stop mode
AnnaBridge 181:57724642e740 117 ADC1->CR2 &= ~ADC_CR2_ADON;
AnnaBridge 181:57724642e740 118 ADC->CCR &= ~ADC_CCR_TSVREFE;
AnnaBridge 181:57724642e740 119 DAC->CR &= ~DAC_CR_EN1;
AnnaBridge 181:57724642e740 120 DAC->CR &= ~DAC_CR_EN2;
AnnaBridge 181:57724642e740 121
AnnaBridge 181:57724642e740 122 // enable ULP and enable fast wakeup
AnnaBridge 181:57724642e740 123 HAL_PWREx_EnableUltraLowPower();
AnnaBridge 181:57724642e740 124 HAL_PWREx_EnableFastWakeUp();
AnnaBridge 181:57724642e740 125
AnnaBridge 181:57724642e740 126 // disable HSI, MSI, and LSI if they are running
AnnaBridge 181:57724642e740 127 if (RCC->CR & RCC_CR_HSION) {
AnnaBridge 181:57724642e740 128 RCC->CR &= ~RCC_CR_HSION;
AnnaBridge 181:57724642e740 129 }
AnnaBridge 181:57724642e740 130 if (RCC->CR & RCC_CR_MSION) {
AnnaBridge 181:57724642e740 131 RCC->CR &= ~RCC_CR_MSION;
AnnaBridge 181:57724642e740 132 }
AnnaBridge 181:57724642e740 133 if (RCC->CSR & RCC_CSR_LSION) {
AnnaBridge 181:57724642e740 134 RCC->CSR &= ~RCC_CSR_LSION;
AnnaBridge 181:57724642e740 135 }
AnnaBridge 181:57724642e740 136
AnnaBridge 181:57724642e740 137 // configure USBTX & USBRX, LORA SPI, LORA_DIO, LORA_RESET, Secure Element, crystal pins, and SWD pins to analog nopull
AnnaBridge 181:57724642e740 138 // the application must do the same with WAKE, GPIO*, UART1_*, I2C_*, and SPI_*
AnnaBridge 181:57724642e740 139
AnnaBridge 181:57724642e740 140 // GPIO Ports Clock Enable
AnnaBridge 181:57724642e740 141 __GPIOA_CLK_ENABLE();
AnnaBridge 181:57724642e740 142 __GPIOB_CLK_ENABLE();
AnnaBridge 181:57724642e740 143 __GPIOC_CLK_ENABLE();
AnnaBridge 181:57724642e740 144 __GPIOH_CLK_ENABLE();
AnnaBridge 181:57724642e740 145
AnnaBridge 181:57724642e740 146 // USBTX & USBRX to analog nopull
AnnaBridge 181:57724642e740 147 GPIO_InitStruct.Pin = GPIO_PIN_2 | GPIO_PIN_3;
AnnaBridge 181:57724642e740 148 GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
AnnaBridge 181:57724642e740 149 GPIO_InitStruct.Pull = GPIO_NOPULL;
AnnaBridge 181:57724642e740 150 HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
AnnaBridge 181:57724642e740 151
AnnaBridge 181:57724642e740 152 // LORA_RESET to analog nopull
AnnaBridge 181:57724642e740 153 GPIO_InitStruct.Pin = GPIO_PIN_1;
AnnaBridge 181:57724642e740 154 GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
AnnaBridge 181:57724642e740 155 GPIO_InitStruct.Pull = GPIO_NOPULL;
AnnaBridge 181:57724642e740 156 HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
AnnaBridge 181:57724642e740 157
AnnaBridge 181:57724642e740 158 // LORA_MISO to analog nopull
AnnaBridge 181:57724642e740 159 GPIO_InitStruct.Pin = GPIO_PIN_4;
AnnaBridge 181:57724642e740 160 GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
AnnaBridge 181:57724642e740 161 GPIO_InitStruct.Pull = GPIO_NOPULL;
AnnaBridge 181:57724642e740 162 HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
AnnaBridge 181:57724642e740 163
AnnaBridge 181:57724642e740 164 // LORA_SCK & LORA_MOSI to input pulldown - additional current draw if left floating
AnnaBridge 181:57724642e740 165 GPIO_InitStruct.Pin = GPIO_PIN_3 | GPIO_PIN_5;
AnnaBridge 181:57724642e740 166 GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
AnnaBridge 181:57724642e740 167 GPIO_InitStruct.Pull = GPIO_PULLDOWN;
AnnaBridge 181:57724642e740 168 HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
AnnaBridge 181:57724642e740 169
AnnaBridge 181:57724642e740 170 // LORA_NSS to analog nopull
AnnaBridge 181:57724642e740 171 GPIO_InitStruct.Pin = GPIO_PIN_15;
AnnaBridge 181:57724642e740 172 GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
AnnaBridge 181:57724642e740 173 GPIO_InitStruct.Pull = GPIO_NOPULL;
AnnaBridge 181:57724642e740 174 HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
AnnaBridge 181:57724642e740 175
AnnaBridge 181:57724642e740 176 // LORA_DIO0 - LORA_DIO2 to analog nopull
AnnaBridge 181:57724642e740 177 GPIO_InitStruct.Pin = GPIO_PIN_6 | GPIO_PIN_7 | GPIO_PIN_8;
AnnaBridge 181:57724642e740 178 GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
AnnaBridge 181:57724642e740 179 GPIO_InitStruct.Pull = GPIO_NOPULL;
AnnaBridge 181:57724642e740 180 HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
AnnaBridge 181:57724642e740 181
AnnaBridge 181:57724642e740 182 // LORA_DIO3 - LORA_DIO4 to analog nopull
AnnaBridge 181:57724642e740 183 GPIO_InitStruct.Pin = GPIO_PIN_6 | GPIO_PIN_7;
AnnaBridge 181:57724642e740 184 GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
AnnaBridge 181:57724642e740 185 GPIO_InitStruct.Pull = GPIO_NOPULL;
AnnaBridge 181:57724642e740 186 HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
AnnaBridge 181:57724642e740 187
AnnaBridge 181:57724642e740 188 // SE_CTRL, SE_IO, & SE_CLK to analog nopull
AnnaBridge 181:57724642e740 189 GPIO_InitStruct.Pin = GPIO_PIN_1 | GPIO_PIN_10 | GPIO_PIN_11;
AnnaBridge 181:57724642e740 190 GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
AnnaBridge 181:57724642e740 191 GPIO_InitStruct.Pull = GPIO_NOPULL;
AnnaBridge 181:57724642e740 192 HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
AnnaBridge 181:57724642e740 193
AnnaBridge 181:57724642e740 194 // SE_RESET to analog nopull
AnnaBridge 181:57724642e740 195 GPIO_InitStruct.Pin = GPIO_PIN_13;
AnnaBridge 181:57724642e740 196 GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
AnnaBridge 181:57724642e740 197 GPIO_InitStruct.Pull = GPIO_NOPULL;
AnnaBridge 181:57724642e740 198 HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
AnnaBridge 181:57724642e740 199
AnnaBridge 181:57724642e740 200 // SWDIO & SWCLK to analog nopull
AnnaBridge 181:57724642e740 201 GPIO_InitStruct.Pin = GPIO_PIN_13 | GPIO_PIN_14;
AnnaBridge 181:57724642e740 202 GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
AnnaBridge 181:57724642e740 203 GPIO_InitStruct.Pull = GPIO_NOPULL;
AnnaBridge 181:57724642e740 204 HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
AnnaBridge 181:57724642e740 205
AnnaBridge 181:57724642e740 206 // OSC32_IN & OSC32_OUT to analog nopull
AnnaBridge 181:57724642e740 207 GPIO_InitStruct.Pin = GPIO_PIN_14 | GPIO_PIN_15;
AnnaBridge 181:57724642e740 208 GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
AnnaBridge 181:57724642e740 209 GPIO_InitStruct.Pull = GPIO_NOPULL;
AnnaBridge 181:57724642e740 210 HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
AnnaBridge 181:57724642e740 211
AnnaBridge 181:57724642e740 212 // OSC_IN & OSC_OUT to analog nopull
AnnaBridge 181:57724642e740 213 GPIO_InitStruct.Pin = GPIO_PIN_0 | GPIO_PIN_1;
AnnaBridge 181:57724642e740 214 GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
AnnaBridge 181:57724642e740 215 GPIO_InitStruct.Pull = GPIO_NOPULL;
AnnaBridge 181:57724642e740 216 HAL_GPIO_Init(GPIOH, &GPIO_InitStruct);
AnnaBridge 181:57724642e740 217
AnnaBridge 181:57724642e740 218 // done configuring pins to analog nopull
AnnaBridge 181:57724642e740 219
AnnaBridge 181:57724642e740 220 // make sure wakeup flag is cleared
AnnaBridge 181:57724642e740 221 PWR->CR |= PWR_CR_CWUF;
AnnaBridge 181:57724642e740 222
AnnaBridge 181:57724642e740 223 // enter stop mode - don't execute past here until woken up
AnnaBridge 181:57724642e740 224 HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
AnnaBridge 181:57724642e740 225
AnnaBridge 181:57724642e740 226 RCC_ClkInitTypeDef RCC_ClkInitStruct;
AnnaBridge 181:57724642e740 227 RCC_OscInitTypeDef HSERCC_OscInitStruct;
AnnaBridge 181:57724642e740 228 /* Enable HSE and HSI48 oscillators and activate PLL with HSE as source */
AnnaBridge 181:57724642e740 229 HSERCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE | RCC_OSCILLATORTYPE_HSI;
AnnaBridge 181:57724642e740 230 HSERCC_OscInitStruct.HSEState = RCC_HSE_ON; /* External 24 MHz xtal on OSC_IN/OSC_OUT */
AnnaBridge 181:57724642e740 231 HSERCC_OscInitStruct.HSIState = RCC_HSI_OFF;
AnnaBridge 187:0387e8f68319 232 // SYSCLK = 32 MHz ((24 MHz * 4) / 3)
AnnaBridge 187:0387e8f68319 233 // USBCLK = 48 MHz ((24 MHz * 4) / 2) --> USB OK
AnnaBridge 181:57724642e740 234 HSERCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
AnnaBridge 181:57724642e740 235 HSERCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
AnnaBridge 181:57724642e740 236 HSERCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL4;
AnnaBridge 181:57724642e740 237 HSERCC_OscInitStruct.PLL.PLLDIV = RCC_PLL_DIV3;
AnnaBridge 181:57724642e740 238 if (HAL_RCC_OscConfig(&HSERCC_OscInitStruct) != HAL_OK) {
AnnaBridge 181:57724642e740 239 debug("OSC initialization failed - initiating soft reset\r\n");
AnnaBridge 181:57724642e740 240 NVIC_SystemReset();
AnnaBridge 181:57724642e740 241 }
AnnaBridge 181:57724642e740 242
AnnaBridge 181:57724642e740 243 /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 clocks dividers */
AnnaBridge 181:57724642e740 244 RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
AnnaBridge 181:57724642e740 245 RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; // 32 MHz
AnnaBridge 181:57724642e740 246 RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; // 32 MHz
AnnaBridge 181:57724642e740 247 RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1; // 32 MHz
AnnaBridge 181:57724642e740 248 RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; // 32 MHz
AnnaBridge 181:57724642e740 249 if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK) {
AnnaBridge 181:57724642e740 250 debug("PLL initialization failed - initiating soft reset\r\n");
AnnaBridge 181:57724642e740 251 NVIC_SystemReset();
AnnaBridge 181:57724642e740 252 }
AnnaBridge 181:57724642e740 253
AnnaBridge 181:57724642e740 254 /* Enable the HSI for ADC peripherals */
AnnaBridge 181:57724642e740 255 RCC_OscInitTypeDef HSIRCC_OscInitStruct;
AnnaBridge 181:57724642e740 256 HAL_RCC_GetOscConfig(&HSIRCC_OscInitStruct);
AnnaBridge 187:0387e8f68319 257 if (HSIRCC_OscInitStruct.HSIState != RCC_HSI_ON) {
AnnaBridge 181:57724642e740 258 HSIRCC_OscInitStruct.HSIState = RCC_HSI_ON;
AnnaBridge 181:57724642e740 259 HSIRCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
AnnaBridge 181:57724642e740 260 HSIRCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
AnnaBridge 181:57724642e740 261 HAL_StatusTypeDef ret = HAL_RCC_OscConfig(&HSIRCC_OscInitStruct);
AnnaBridge 187:0387e8f68319 262 if (ret != HAL_OK) {
AnnaBridge 181:57724642e740 263 debug("HSI initialization failed - ADC will not function properly\r\n");
AnnaBridge 181:57724642e740 264 }
AnnaBridge 181:57724642e740 265 }
AnnaBridge 181:57724642e740 266
AnnaBridge 181:57724642e740 267 SystemCoreClockUpdate();
AnnaBridge 181:57724642e740 268
AnnaBridge 181:57724642e740 269 // clear wakeup flag in power control register
AnnaBridge 181:57724642e740 270 PWR->CR |= PWR_CR_CWUF;
AnnaBridge 181:57724642e740 271
AnnaBridge 181:57724642e740 272 // enable the ADC and DAC
AnnaBridge 181:57724642e740 273 ADC->CCR |= ADC_CCR_TSVREFE;
AnnaBridge 181:57724642e740 274 ADC1->CR2 |= ADC_CR2_ADON;
AnnaBridge 181:57724642e740 275 DAC->CR |= DAC_CR_EN1;
AnnaBridge 181:57724642e740 276 DAC->CR |= DAC_CR_EN2;
AnnaBridge 181:57724642e740 277 }
AnnaBridge 181:57724642e740 278
AnnaBridge 187:0387e8f68319 279 void xdot_enter_standby_mode()
AnnaBridge 187:0387e8f68319 280 {
AnnaBridge 181:57724642e740 281 // enable ULP and enable fast wakeup
AnnaBridge 181:57724642e740 282 HAL_PWREx_EnableUltraLowPower();
AnnaBridge 181:57724642e740 283 HAL_PWREx_EnableFastWakeUp();
AnnaBridge 181:57724642e740 284
AnnaBridge 181:57724642e740 285 // disable HSI, MSI, and LSI if they are running
AnnaBridge 187:0387e8f68319 286 if (RCC->CR & RCC_CR_HSION) {
AnnaBridge 181:57724642e740 287 RCC->CR &= ~RCC_CR_HSION;
AnnaBridge 187:0387e8f68319 288 }
AnnaBridge 187:0387e8f68319 289 if (RCC->CR & RCC_CR_MSION) {
AnnaBridge 181:57724642e740 290 RCC->CR &= ~RCC_CR_MSION;
AnnaBridge 187:0387e8f68319 291 }
AnnaBridge 187:0387e8f68319 292 if (RCC->CSR & RCC_CSR_LSION) {
AnnaBridge 181:57724642e740 293 RCC->CSR &= ~RCC_CSR_LSION;
AnnaBridge 187:0387e8f68319 294 }
AnnaBridge 181:57724642e740 295
AnnaBridge 181:57724642e740 296
AnnaBridge 181:57724642e740 297 // make sure wakeup and standby flags are cleared
AnnaBridge 181:57724642e740 298 PWR->CR |= PWR_CR_CWUF;
AnnaBridge 181:57724642e740 299 PWR->CR |= PWR_CR_CSBF;
AnnaBridge 181:57724642e740 300
AnnaBridge 181:57724642e740 301 // enter standby mode
AnnaBridge 181:57724642e740 302 HAL_PWR_EnterSTANDBYMode();
AnnaBridge 181:57724642e740 303 }
AnnaBridge 181:57724642e740 304
AnnaBridge 187:0387e8f68319 305 void xdot_enable_standby_wake_pin()
AnnaBridge 187:0387e8f68319 306 {
AnnaBridge 181:57724642e740 307 HAL_PWR_EnableWakeUpPin(PWR_WAKEUP_PIN1);
AnnaBridge 181:57724642e740 308 }
AnnaBridge 181:57724642e740 309
AnnaBridge 187:0387e8f68319 310 void xdot_disable_standby_wake_pin()
AnnaBridge 187:0387e8f68319 311 {
AnnaBridge 181:57724642e740 312 HAL_PWR_DisableWakeUpPin(PWR_WAKEUP_PIN1);
AnnaBridge 181:57724642e740 313 }