Nothing Special / mbed-STM32F103C8

Modification of Mbed-dev library for LQFP48 package microcontrollers: STM32F103C8 (STM32F103C8T6) and STM32F103CB (STM32F103CBT6) (Bluepill boards, Maple mini etc. )

Fork of mbed-STM32F103C8_org by Nothing Special

Library for STM32F103C8 (Bluepill boards etc.).
Use this instead of mbed library.
This library allows the size of the code in the FLASH up to 128kB. Therefore, code also runs on microcontrollers STM32F103CB (eg. Maple mini).
But in the case of STM32F103C8, check the size of the resulting code would not exceed 64kB.

To compile a program with this library, use NUCLEO-F103RB as the target name. !

Changes:

  • Corrected initialization of the HSE + crystal clock (mbed permanent bug), allowing the use of on-board xtal (8MHz).(1)
  • Additionally, it also set USB clock (48Mhz).(2)
  • Definitions of pins and peripherals adjusted to LQFP48 case.
  • Board led LED1 is now PC_13 (3)
  • USER_BUTTON is now PC_14 (4)

    Now the library is complete rebuilt based on mbed-dev v160 (and not yet fully tested).

notes
(1) - In case 8MHz xtal on board, CPU frequency is 72MHz. Without xtal is 64MHz.
(2) - Using the USB interface is only possible if STM32 is clocking by on-board 8MHz xtal or external clock signal 8MHz on the OSC_IN pin.
(3) - On Bluepill board led operation is reversed, i.e. 0 - led on, 1 - led off.
(4) - Bluepill board has no real user button

Information

After export to SW4STM (AC6):

  • add line #include "mbed_config.h" in files Serial.h and RawSerial.h
  • in project properties change Optimisation Level to Optimise for size (-Os)

targets/TARGET_STM/sleep.c@148:8b0b02bf146f, 2017-04-27 (annotated)

Committer:
mega64
Date:
Thu Apr 27 23:56:38 2017 +0000
Revision:
148:8b0b02bf146f
Parent:
146:03e976389d16 
Remove unnecessary folders

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mega64 146:03e976389d16 1 /* mbed Microcontroller Library
mega64 146:03e976389d16 2 *******************************************************************************
mega64 146:03e976389d16 3 * Copyright (c) 2016, STMicroelectronics
mega64 146:03e976389d16 4 * All rights reserved.
mega64 146:03e976389d16 5 *
mega64 146:03e976389d16 6 * Redistribution and use in source and binary forms, with or without
mega64 146:03e976389d16 7 * modification, are permitted provided that the following conditions are met:
mega64 146:03e976389d16 8 *
mega64 146:03e976389d16 9 * 1. Redistributions of source code must retain the above copyright notice,
mega64 146:03e976389d16 10 * this list of conditions and the following disclaimer.
mega64 146:03e976389d16 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mega64 146:03e976389d16 12 * this list of conditions and the following disclaimer in the documentation
mega64 146:03e976389d16 13 * and/or other materials provided with the distribution.
mega64 146:03e976389d16 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mega64 146:03e976389d16 15 * may be used to endorse or promote products derived from this software
mega64 146:03e976389d16 16 * without specific prior written permission.
mega64 146:03e976389d16 17 *
mega64 146:03e976389d16 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mega64 146:03e976389d16 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mega64 146:03e976389d16 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mega64 146:03e976389d16 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mega64 146:03e976389d16 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mega64 146:03e976389d16 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mega64 146:03e976389d16 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mega64 146:03e976389d16 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mega64 146:03e976389d16 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mega64 146:03e976389d16 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mega64 146:03e976389d16 28 *******************************************************************************
mega64 146:03e976389d16 29 */
mega64 146:03e976389d16 30 #if DEVICE_SLEEP
mega64 146:03e976389d16 31
mega64 146:03e976389d16 32 #include "cmsis.h"
mega64 146:03e976389d16 33 #include "us_ticker_api.h"
mega64 146:03e976389d16 34 #include "sleep_api.h"
mega64 146:03e976389d16 35 #include "rtc_api_hal.h"
mega64 146:03e976389d16 36 #include "hal_tick.h"
mega64 146:03e976389d16 37
mega64 146:03e976389d16 38 extern void HAL_SuspendTick(void);
mega64 146:03e976389d16 39 extern void HAL_ResumeTick(void);
mega64 146:03e976389d16 40
mega64 146:03e976389d16 41 void hal_sleep(void)
mega64 146:03e976389d16 42 {
mega64 146:03e976389d16 43 // Stop HAL tick to avoid to exit sleep in 1ms
mega64 146:03e976389d16 44 HAL_SuspendTick();
mega64 146:03e976389d16 45 // Request to enter SLEEP mode
mega64 146:03e976389d16 46 HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);
mega64 146:03e976389d16 47
mega64 146:03e976389d16 48 // Restart HAL tick
mega64 146:03e976389d16 49 HAL_ResumeTick();
mega64 146:03e976389d16 50 }
mega64 146:03e976389d16 51
mega64 146:03e976389d16 52 void hal_deepsleep(void)
mega64 146:03e976389d16 53 {
mega64 146:03e976389d16 54 // Stop HAL tick
mega64 146:03e976389d16 55 HAL_SuspendTick();
mega64 146:03e976389d16 56 uint32_t EnterTimeUS = us_ticker_read();
mega64 146:03e976389d16 57
mega64 146:03e976389d16 58 // Request to enter STOP mode with regulator in low power mode
mega64 146:03e976389d16 59 #if TARGET_STM32L4
mega64 146:03e976389d16 60 int pwrClockEnabled = __HAL_RCC_PWR_IS_CLK_ENABLED();
mega64 146:03e976389d16 61 int lowPowerModeEnabled = PWR->CR1 & PWR_CR1_LPR;
mega64 146:03e976389d16 62
mega64 146:03e976389d16 63 if (!pwrClockEnabled) {
mega64 146:03e976389d16 64 __HAL_RCC_PWR_CLK_ENABLE();
mega64 146:03e976389d16 65 }
mega64 146:03e976389d16 66 if (lowPowerModeEnabled) {
mega64 146:03e976389d16 67 HAL_PWREx_DisableLowPowerRunMode();
mega64 146:03e976389d16 68 }
mega64 146:03e976389d16 69
mega64 146:03e976389d16 70 HAL_PWREx_EnterSTOP2Mode(PWR_STOPENTRY_WFI);
mega64 146:03e976389d16 71
mega64 146:03e976389d16 72 if (lowPowerModeEnabled) {
mega64 146:03e976389d16 73 HAL_PWREx_EnableLowPowerRunMode();
mega64 146:03e976389d16 74 }
mega64 146:03e976389d16 75 if (!pwrClockEnabled) {
mega64 146:03e976389d16 76 __HAL_RCC_PWR_CLK_DISABLE();
mega64 146:03e976389d16 77 }
mega64 146:03e976389d16 78 #else /* TARGET_STM32L4 */
mega64 146:03e976389d16 79 HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
mega64 146:03e976389d16 80 #endif /* TARGET_STM32L4 */
mega64 146:03e976389d16 81
mega64 146:03e976389d16 82 // Restart HAL tick
mega64 146:03e976389d16 83 HAL_ResumeTick();
mega64 146:03e976389d16 84
mega64 146:03e976389d16 85 // After wake-up from STOP reconfigure the PLL
mega64 146:03e976389d16 86 SetSysClock();
mega64 146:03e976389d16 87
mega64 146:03e976389d16 88 TIM_HandleTypeDef TimMasterHandle;
mega64 146:03e976389d16 89 TimMasterHandle.Instance = TIM_MST;
mega64 146:03e976389d16 90 __HAL_TIM_SET_COUNTER(&TimMasterHandle, EnterTimeUS);
mega64 146:03e976389d16 91
mega64 146:03e976389d16 92 #if DEVICE_LOWPOWERTIMER
mega64 146:03e976389d16 93 rtc_synchronize();
mega64 146:03e976389d16 94 #endif
mega64 146:03e976389d16 95 }
mega64 146:03e976389d16 96
mega64 146:03e976389d16 97 #endif