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)

platform/mbed_application.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
mega64 146:03e976389d16 2 /** \addtogroup platform */
mega64 146:03e976389d16 3 /** @{*/
mega64 146:03e976389d16 4 /* mbed Microcontroller Library
mega64 146:03e976389d16 5 * Copyright (c) 2017-2017 ARM Limited
mega64 146:03e976389d16 6 *
mega64 146:03e976389d16 7 * Licensed under the Apache License, Version 2.0 (the "License");
mega64 146:03e976389d16 8 * you may not use this file except in compliance with the License.
mega64 146:03e976389d16 9 * You may obtain a copy of the License at
mega64 146:03e976389d16 10 *
mega64 146:03e976389d16 11 * http://www.apache.org/licenses/LICENSE-2.0
mega64 146:03e976389d16 12 *
mega64 146:03e976389d16 13 * Unless required by applicable law or agreed to in writing, software
mega64 146:03e976389d16 14 * distributed under the License is distributed on an "AS IS" BASIS,
mega64 146:03e976389d16 15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mega64 146:03e976389d16 16 * See the License for the specific language governing permissions and
mega64 146:03e976389d16 17 * limitations under the License.
mega64 146:03e976389d16 18 */
mega64 146:03e976389d16 19 #ifndef MBED_APPLICATION_H
mega64 146:03e976389d16 20 #define MBED_APPLICATION_H
mega64 146:03e976389d16 21
mega64 146:03e976389d16 22 #include<stdint.h>
mega64 146:03e976389d16 23
mega64 146:03e976389d16 24 #define MBED_APPLICATION_SUPPORT (defined(__CORTEX_M3) || defined(__CORTEX_M4) || defined(__CORTEX_M7))
mega64 146:03e976389d16 25 #if MBED_APPLICATION_SUPPORT
mega64 146:03e976389d16 26 #ifdef __cplusplus
mega64 146:03e976389d16 27 extern "C" {
mega64 146:03e976389d16 28 #endif
mega64 146:03e976389d16 29
mega64 146:03e976389d16 30 /**
mega64 146:03e976389d16 31 * Start the application at the given address. This function does
mega64 146:03e976389d16 32 * not return. It is the applications responsibility for flushing to
mega64 146:03e976389d16 33 * or powering down external components such as filesystems or
mega64 146:03e976389d16 34 * socket connections before calling this function. For Cortex-M
mega64 146:03e976389d16 35 * devices this function powers down generic system components such as
mega64 146:03e976389d16 36 * the NVIC and set the vector table to that of the new image followed
mega64 146:03e976389d16 37 * by jumping to the reset handler of the new image.
mega64 146:03e976389d16 38 *
mega64 146:03e976389d16 39 * @param address Starting address of next application to run
mega64 146:03e976389d16 40 */
mega64 146:03e976389d16 41 void mbed_start_application(uintptr_t address);
mega64 146:03e976389d16 42
mega64 146:03e976389d16 43 #ifdef __cplusplus
mega64 146:03e976389d16 44 }
mega64 146:03e976389d16 45 #endif
mega64 146:03e976389d16 46 #endif
mega64 146:03e976389d16 47
mega64 146:03e976389d16 48 #endif
mega64 146:03e976389d16 49
mega64 146:03e976389d16 50 /** @}*/