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_stats.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 #include "mbed_stats.h"
mega64 146:03e976389d16 2 #include <string.h>
mega64 146:03e976389d16 3
mega64 146:03e976389d16 4 #if MBED_CONF_RTOS_PRESENT
mega64 146:03e976389d16 5 #include "cmsis_os.h"
mega64 146:03e976389d16 6 #endif
mega64 146:03e976389d16 7
mega64 146:03e976389d16 8 // note: mbed_stats_heap_get defined in mbed_alloc_wrappers.cpp
mega64 146:03e976389d16 9
mega64 146:03e976389d16 10 void mbed_stats_stack_get(mbed_stats_stack_t *stats)
mega64 146:03e976389d16 11 {
mega64 146:03e976389d16 12 memset(stats, 0, sizeof(mbed_stats_stack_t));
mega64 146:03e976389d16 13
mega64 146:03e976389d16 14 #if MBED_STACK_STATS_ENABLED && MBED_CONF_RTOS_PRESENT
mega64 146:03e976389d16 15 osThreadEnumId enumid = _osThreadsEnumStart();
mega64 146:03e976389d16 16 osThreadId threadid;
mega64 146:03e976389d16 17
mega64 146:03e976389d16 18 while ((threadid = _osThreadEnumNext(enumid))) {
mega64 146:03e976389d16 19 osEvent e;
mega64 146:03e976389d16 20
mega64 146:03e976389d16 21 e = _osThreadGetInfo(threadid, osThreadInfoStackMax);
mega64 146:03e976389d16 22 if (e.status == osOK) {
mega64 146:03e976389d16 23 stats->max_size += (uint32_t)e.value.p;
mega64 146:03e976389d16 24 }
mega64 146:03e976389d16 25
mega64 146:03e976389d16 26 e = _osThreadGetInfo(threadid, osThreadInfoStackSize);
mega64 146:03e976389d16 27 if (e.status == osOK) {
mega64 146:03e976389d16 28 stats->reserved_size += (uint32_t)e.value.p;
mega64 146:03e976389d16 29 }
mega64 146:03e976389d16 30
mega64 146:03e976389d16 31 stats->stack_cnt += 1;
mega64 146:03e976389d16 32 }
mega64 146:03e976389d16 33 #endif
mega64 146:03e976389d16 34 }
mega64 146:03e976389d16 35
mega64 146:03e976389d16 36 size_t mbed_stats_stack_get_each(mbed_stats_stack_t *stats, size_t count)
mega64 146:03e976389d16 37 {
mega64 146:03e976389d16 38 memset(stats, 0, count*sizeof(mbed_stats_stack_t));
mega64 146:03e976389d16 39 size_t i = 0;
mega64 146:03e976389d16 40
mega64 146:03e976389d16 41 #if MBED_STACK_STATS_ENABLED && MBED_CONF_RTOS_PRESENT
mega64 146:03e976389d16 42 osThreadEnumId enumid = _osThreadsEnumStart();
mega64 146:03e976389d16 43 osThreadId threadid;
mega64 146:03e976389d16 44
mega64 146:03e976389d16 45 while ((threadid = _osThreadEnumNext(enumid)) && i < count) {
mega64 146:03e976389d16 46 osEvent e;
mega64 146:03e976389d16 47
mega64 146:03e976389d16 48 e = _osThreadGetInfo(threadid, osThreadInfoStackMax);
mega64 146:03e976389d16 49 if (e.status == osOK) {
mega64 146:03e976389d16 50 stats[i].max_size = (uint32_t)e.value.p;
mega64 146:03e976389d16 51 }
mega64 146:03e976389d16 52
mega64 146:03e976389d16 53 e = _osThreadGetInfo(threadid, osThreadInfoStackSize);
mega64 146:03e976389d16 54 if (e.status == osOK) {
mega64 146:03e976389d16 55 stats[i].reserved_size = (uint32_t)e.value.p;
mega64 146:03e976389d16 56 }
mega64 146:03e976389d16 57
mega64 146:03e976389d16 58 stats[i].thread_id = (uint32_t)threadid;
mega64 146:03e976389d16 59 stats[i].stack_cnt = 1;
mega64 146:03e976389d16 60 i += 1;
mega64 146:03e976389d16 61 }
mega64 146:03e976389d16 62 #endif
mega64 146:03e976389d16 63
mega64 146:03e976389d16 64 return i;
mega64 146:03e976389d16 65 }
mega64 146:03e976389d16 66
mega64 146:03e976389d16 67 #if MBED_STACK_STATS_ENABLED && !MBED_CONF_RTOS_PRESENT
mega64 146:03e976389d16 68 #warning Stack statistics are currently not supported without the rtos.
mega64 146:03e976389d16 69 #endif