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)

drivers/LocalFileSystem.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 /* mbed Microcontroller Library
mega64 146:03e976389d16 2 * Copyright (c) 2006-2013 ARM Limited
mega64 146:03e976389d16 3 *
mega64 146:03e976389d16 4 * Licensed under the Apache License, Version 2.0 (the "License");
mega64 146:03e976389d16 5 * you may not use this file except in compliance with the License.
mega64 146:03e976389d16 6 * You may obtain a copy of the License at
mega64 146:03e976389d16 7 *
mega64 146:03e976389d16 8 * http://www.apache.org/licenses/LICENSE-2.0
mega64 146:03e976389d16 9 *
mega64 146:03e976389d16 10 * Unless required by applicable law or agreed to in writing, software
mega64 146:03e976389d16 11 * distributed under the License is distributed on an "AS IS" BASIS,
mega64 146:03e976389d16 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mega64 146:03e976389d16 13 * See the License for the specific language governing permissions and
mega64 146:03e976389d16 14 * limitations under the License.
mega64 146:03e976389d16 15 */
mega64 146:03e976389d16 16 #ifndef MBED_LOCALFILESYSTEM_H
mega64 146:03e976389d16 17 #define MBED_LOCALFILESYSTEM_H
mega64 146:03e976389d16 18
mega64 146:03e976389d16 19 #include "platform/platform.h"
mega64 146:03e976389d16 20
mega64 146:03e976389d16 21 #if DEVICE_LOCALFILESYSTEM
mega64 146:03e976389d16 22
mega64 146:03e976389d16 23 #include "drivers/FileSystemLike.h"
mega64 146:03e976389d16 24 #include "platform/PlatformMutex.h"
mega64 146:03e976389d16 25
mega64 146:03e976389d16 26 namespace mbed {
mega64 146:03e976389d16 27 /** \addtogroup drivers */
mega64 146:03e976389d16 28 /** @{*/
mega64 146:03e976389d16 29
mega64 146:03e976389d16 30 FILEHANDLE local_file_open(const char* name, int flags);
mega64 146:03e976389d16 31
mega64 146:03e976389d16 32 class LocalFileHandle : public FileHandle {
mega64 146:03e976389d16 33
mega64 146:03e976389d16 34 public:
mega64 146:03e976389d16 35 LocalFileHandle(FILEHANDLE fh);
mega64 146:03e976389d16 36
mega64 146:03e976389d16 37 virtual int close();
mega64 146:03e976389d16 38
mega64 146:03e976389d16 39 virtual ssize_t write(const void *buffer, size_t length);
mega64 146:03e976389d16 40
mega64 146:03e976389d16 41 virtual ssize_t read(void *buffer, size_t length);
mega64 146:03e976389d16 42
mega64 146:03e976389d16 43 virtual int isatty();
mega64 146:03e976389d16 44
mega64 146:03e976389d16 45 virtual off_t lseek(off_t position, int whence);
mega64 146:03e976389d16 46
mega64 146:03e976389d16 47 virtual int fsync();
mega64 146:03e976389d16 48
mega64 146:03e976389d16 49 virtual off_t flen();
mega64 146:03e976389d16 50
mega64 146:03e976389d16 51 protected:
mega64 146:03e976389d16 52 virtual void lock();
mega64 146:03e976389d16 53 virtual void unlock();
mega64 146:03e976389d16 54 FILEHANDLE _fh;
mega64 146:03e976389d16 55 int pos;
mega64 146:03e976389d16 56 PlatformMutex _mutex;
mega64 146:03e976389d16 57 };
mega64 146:03e976389d16 58
mega64 146:03e976389d16 59 /** A filesystem for accessing the local mbed Microcontroller USB disk drive
mega64 146:03e976389d16 60 *
mega64 146:03e976389d16 61 * This allows programs to read and write files on the same disk drive that is used to program the
mega64 146:03e976389d16 62 * mbed Microcontroller. Once created, the standard C file access functions are used to open,
mega64 146:03e976389d16 63 * read and write files.
mega64 146:03e976389d16 64 *
mega64 146:03e976389d16 65 * @Note Synchronization level: Thread safe
mega64 146:03e976389d16 66 *
mega64 146:03e976389d16 67 * Example:
mega64 146:03e976389d16 68 * @code
mega64 146:03e976389d16 69 * #include "mbed.h"
mega64 146:03e976389d16 70 *
mega64 146:03e976389d16 71 * LocalFileSystem local("local"); // Create the local filesystem under the name "local"
mega64 146:03e976389d16 72 *
mega64 146:03e976389d16 73 * int main() {
mega64 146:03e976389d16 74 * FILE *fp = fopen("/local/out.txt", "w"); // Open "out.txt" on the local file system for writing
mega64 146:03e976389d16 75 * fprintf(fp, "Hello World!");
mega64 146:03e976389d16 76 * fclose(fp);
mega64 146:03e976389d16 77 * remove("/local/out.txt"); // Removes the file "out.txt" from the local file system
mega64 146:03e976389d16 78 *
mega64 146:03e976389d16 79 * DIR *d = opendir("/local"); // Opens the root directory of the local file system
mega64 146:03e976389d16 80 * struct dirent *p;
mega64 146:03e976389d16 81 * while((p = readdir(d)) != NULL) { // Print the names of the files in the local file system
mega64 146:03e976389d16 82 * printf("%s\n", p->d_name); // to stdout.
mega64 146:03e976389d16 83 * }
mega64 146:03e976389d16 84 * closedir(d);
mega64 146:03e976389d16 85 * }
mega64 146:03e976389d16 86 * @endcode
mega64 146:03e976389d16 87 *
mega64 146:03e976389d16 88 * @note
mega64 146:03e976389d16 89 * If the microcontroller program makes an access to the local drive, it will be marked as "removed"
mega64 146:03e976389d16 90 * on the Host computer. This means it is no longer accessible from the Host Computer.
mega64 146:03e976389d16 91 *
mega64 146:03e976389d16 92 * The drive will only re-appear when the microcontroller program exists. Note that if the program does
mega64 146:03e976389d16 93 * not exit, you will need to hold down reset on the mbed Microcontroller to be able to see the drive again!
mega64 146:03e976389d16 94 */
mega64 146:03e976389d16 95 class LocalFileSystem : public FileSystemLike {
mega64 146:03e976389d16 96 // No modifiable state
mega64 146:03e976389d16 97
mega64 146:03e976389d16 98 public:
mega64 146:03e976389d16 99 LocalFileSystem(const char* n) : FileSystemLike(n) {
mega64 146:03e976389d16 100
mega64 146:03e976389d16 101 }
mega64 146:03e976389d16 102
mega64 146:03e976389d16 103 virtual FileHandle *open(const char* name, int flags);
mega64 146:03e976389d16 104 virtual int remove(const char *filename);
mega64 146:03e976389d16 105 virtual DirHandle *opendir(const char *name);
mega64 146:03e976389d16 106 };
mega64 146:03e976389d16 107
mega64 146:03e976389d16 108 } // namespace mbed
mega64 146:03e976389d16 109
mega64 146:03e976389d16 110 #endif
mega64 146:03e976389d16 111
mega64 146:03e976389d16 112 #endif
mega64 146:03e976389d16 113
mega64 146:03e976389d16 114 /** @}*/