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/CallChain.cpp@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 "platform/CallChain.h"
mega64 146:03e976389d16 2 #include "cmsis.h"
mega64 146:03e976389d16 3 #include "platform/mbed_critical.h"
mega64 146:03e976389d16 4
mega64 146:03e976389d16 5 namespace mbed {
mega64 146:03e976389d16 6
mega64 146:03e976389d16 7 class CallChainLink {
mega64 146:03e976389d16 8 public:
mega64 146:03e976389d16 9 CallChainLink(): cb(), next(NULL) {
mega64 146:03e976389d16 10 // No work to do
mega64 146:03e976389d16 11 }
mega64 146:03e976389d16 12
mega64 146:03e976389d16 13 CallChainLink(Callback<void()> &callback): cb(callback), next(NULL) {
mega64 146:03e976389d16 14 // No work to do
mega64 146:03e976389d16 15 }
mega64 146:03e976389d16 16 Callback<void()> cb;
mega64 146:03e976389d16 17 CallChainLink * next;
mega64 146:03e976389d16 18 };
mega64 146:03e976389d16 19
mega64 146:03e976389d16 20 CallChain::CallChain(int size) : _chain(NULL) {
mega64 146:03e976389d16 21 // No work to do
mega64 146:03e976389d16 22 }
mega64 146:03e976389d16 23
mega64 146:03e976389d16 24 CallChain::~CallChain() {
mega64 146:03e976389d16 25 clear();
mega64 146:03e976389d16 26 }
mega64 146:03e976389d16 27
mega64 146:03e976389d16 28 pFunctionPointer_t CallChain::add(Callback<void()> func) {
mega64 146:03e976389d16 29 CallChainLink *new_link = new CallChainLink(func);
mega64 146:03e976389d16 30 if (NULL == _chain) {
mega64 146:03e976389d16 31 _chain = new_link;
mega64 146:03e976389d16 32 return &new_link->cb;
mega64 146:03e976389d16 33 }
mega64 146:03e976389d16 34
mega64 146:03e976389d16 35 CallChainLink *link = _chain;
mega64 146:03e976389d16 36 while (true) {
mega64 146:03e976389d16 37 if (NULL == link->next) {
mega64 146:03e976389d16 38 link->next = new_link;
mega64 146:03e976389d16 39 return &new_link->cb;
mega64 146:03e976389d16 40 }
mega64 146:03e976389d16 41 link = link->next;
mega64 146:03e976389d16 42 }
mega64 146:03e976389d16 43 }
mega64 146:03e976389d16 44
mega64 146:03e976389d16 45 pFunctionPointer_t CallChain::add_front(Callback<void()> func) {
mega64 146:03e976389d16 46 CallChainLink *link = new CallChainLink(func);
mega64 146:03e976389d16 47 link->next = _chain;
mega64 146:03e976389d16 48 _chain = link;
mega64 146:03e976389d16 49 return &link->cb;
mega64 146:03e976389d16 50 }
mega64 146:03e976389d16 51
mega64 146:03e976389d16 52 int CallChain::size() const {
mega64 146:03e976389d16 53 CallChainLink *link = _chain;
mega64 146:03e976389d16 54 int elements = 0;
mega64 146:03e976389d16 55 while (link != NULL) {
mega64 146:03e976389d16 56 elements++;
mega64 146:03e976389d16 57 link = link->next;
mega64 146:03e976389d16 58 }
mega64 146:03e976389d16 59 return elements;
mega64 146:03e976389d16 60 }
mega64 146:03e976389d16 61
mega64 146:03e976389d16 62 pFunctionPointer_t CallChain::get(int idx) const {
mega64 146:03e976389d16 63 CallChainLink *link = _chain;
mega64 146:03e976389d16 64 for (int i = 0; i < idx; i++) {
mega64 146:03e976389d16 65 if (NULL == link) {
mega64 146:03e976389d16 66 break;
mega64 146:03e976389d16 67 }
mega64 146:03e976389d16 68 link = link->next;
mega64 146:03e976389d16 69 }
mega64 146:03e976389d16 70 return &link->cb;
mega64 146:03e976389d16 71 }
mega64 146:03e976389d16 72
mega64 146:03e976389d16 73 int CallChain::find(pFunctionPointer_t f) const {
mega64 146:03e976389d16 74 CallChainLink *link = _chain;
mega64 146:03e976389d16 75 int i = 0;
mega64 146:03e976389d16 76 while (link != NULL) {
mega64 146:03e976389d16 77 if (f == &link->cb) {
mega64 146:03e976389d16 78 return i;
mega64 146:03e976389d16 79 }
mega64 146:03e976389d16 80 i++;
mega64 146:03e976389d16 81 link = link->next;
mega64 146:03e976389d16 82 }
mega64 146:03e976389d16 83 return -1;
mega64 146:03e976389d16 84 }
mega64 146:03e976389d16 85
mega64 146:03e976389d16 86 void CallChain::clear() {
mega64 146:03e976389d16 87 CallChainLink *link = _chain;
mega64 146:03e976389d16 88 _chain = NULL;
mega64 146:03e976389d16 89 while (link != NULL) {
mega64 146:03e976389d16 90 CallChainLink *temp = link->next;
mega64 146:03e976389d16 91 delete link;
mega64 146:03e976389d16 92 link = temp;
mega64 146:03e976389d16 93 }
mega64 146:03e976389d16 94 }
mega64 146:03e976389d16 95
mega64 146:03e976389d16 96 bool CallChain::remove(pFunctionPointer_t f) {
mega64 146:03e976389d16 97 CallChainLink *link = _chain;
mega64 146:03e976389d16 98 while (link != NULL) {
mega64 146:03e976389d16 99 if (f == &link->cb) {
mega64 146:03e976389d16 100 delete link;
mega64 146:03e976389d16 101 return true;
mega64 146:03e976389d16 102 }
mega64 146:03e976389d16 103 link = link->next;
mega64 146:03e976389d16 104 }
mega64 146:03e976389d16 105 return false;
mega64 146:03e976389d16 106 }
mega64 146:03e976389d16 107
mega64 146:03e976389d16 108 void CallChain::call() {
mega64 146:03e976389d16 109 CallChainLink *link = _chain;
mega64 146:03e976389d16 110 while (link != NULL) {
mega64 146:03e976389d16 111 link->cb.call();
mega64 146:03e976389d16 112 link = link->next;
mega64 146:03e976389d16 113 }
mega64 146:03e976389d16 114 }
mega64 146:03e976389d16 115
mega64 146:03e976389d16 116 } // namespace mbed