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/TARGET_STM32F1/device.h@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 // The 'features' section in 'target.json' is now used to create the device's hardware preprocessor switches.
mega64 146:03e976389d16 2 // Check the 'features' section of the target description in 'targets.json' for more details.
mega64 146:03e976389d16 3 /* mbed Microcontroller Library
mega64 146:03e976389d16 4 *******************************************************************************
mega64 146:03e976389d16 5 * Copyright (c) 2014, STMicroelectronics
mega64 146:03e976389d16 6 * All rights reserved.
mega64 146:03e976389d16 7 *
mega64 146:03e976389d16 8 * Redistribution and use in source and binary forms, with or without
mega64 146:03e976389d16 9 * modification, are permitted provided that the following conditions are met:
mega64 146:03e976389d16 10 *
mega64 146:03e976389d16 11 * 1. Redistributions of source code must retain the above copyright notice,
mega64 146:03e976389d16 12 * this list of conditions and the following disclaimer.
mega64 146:03e976389d16 13 * 2. Redistributions in binary form must reproduce the above copyright notice,
mega64 146:03e976389d16 14 * this list of conditions and the following disclaimer in the documentation
mega64 146:03e976389d16 15 * and/or other materials provided with the distribution.
mega64 146:03e976389d16 16 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mega64 146:03e976389d16 17 * may be used to endorse or promote products derived from this software
mega64 146:03e976389d16 18 * without specific prior written permission.
mega64 146:03e976389d16 19 *
mega64 146:03e976389d16 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mega64 146:03e976389d16 21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mega64 146:03e976389d16 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mega64 146:03e976389d16 23 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mega64 146:03e976389d16 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mega64 146:03e976389d16 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mega64 146:03e976389d16 26 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mega64 146:03e976389d16 27 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mega64 146:03e976389d16 28 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mega64 146:03e976389d16 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mega64 146:03e976389d16 30 *******************************************************************************
mega64 146:03e976389d16 31 */
mega64 146:03e976389d16 32 #ifndef MBED_DEVICE_H
mega64 146:03e976389d16 33 #define MBED_DEVICE_H
mega64 146:03e976389d16 34
mega64 146:03e976389d16 35 //=======================================
mega64 146:03e976389d16 36 #define DEVICE_ID_LENGTH 24
mega64 146:03e976389d16 37
mega64 146:03e976389d16 38 #include "objects.h"
mega64 146:03e976389d16 39
mega64 146:03e976389d16 40 #endif