Nothing Special / mbed-STM32F100R6

mbed-dev library fork for STM32F100R6 microcontroller (LQFP64, 24MHz, 32kB flash, 4kB ram, 2-channel DAC, HDMI CEC, very cheap) . Use in online compiler (instead mbed library) with selected platform Nucleo F103RB.

Fork of mbed-dev by mbed official




Tested and working:

  • blink
  • system frequency 24Mhz (with external xtal 8Mhz)
  • stdio uart on pins PA_2-PA_3
  • Serial on pins PA_9-PA_10
  • AnalogOut on pins PA_4, PA_5 (DAC)
  • AnalogIn on pins PA_0, PA_1, PA_2, PA_3, PA_4, PA_5, PA_6, PA_7, PB_0, PB_1, PC_0, PC_1, PC_2, PC_3, PC_5, PC_5


    Notes:
  • TIM2 is used for mbed needs (eq Timer, Ticker, wait etc. )




    Simple test program:

    Import programtestF100R6

    simple tests for STM32F100R6 microcontroller with dedicated library

    Last commit 19 Mar 2017 by Nothing Special

common/InterruptManager.cpp@51:25d18ad142c8, 2017-03-19 (annotated)

Committer:
mega64
Date:
Sun Mar 19 23:16:34 2017 +0000
Revision:
51:25d18ad142c8
Parent:
0:9b334a45a8ff 
fixed incompatibility with the modified mbed environment Ch.n+1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 #include "cmsis.h"
bogdanm 0:9b334a45a8ff 2 #if defined(NVIC_NUM_VECTORS)
bogdanm 0:9b334a45a8ff 3
bogdanm 0:9b334a45a8ff 4 #include "InterruptManager.h"
bogdanm 0:9b334a45a8ff 5 #include <string.h>
bogdanm 0:9b334a45a8ff 6
bogdanm 0:9b334a45a8ff 7 #define CHAIN_INITIAL_SIZE 4
bogdanm 0:9b334a45a8ff 8
bogdanm 0:9b334a45a8ff 9 namespace mbed {
bogdanm 0:9b334a45a8ff 10
bogdanm 0:9b334a45a8ff 11 typedef void (*pvoidf)(void);
bogdanm 0:9b334a45a8ff 12
bogdanm 0:9b334a45a8ff 13 InterruptManager* InterruptManager::_instance = (InterruptManager*)NULL;
bogdanm 0:9b334a45a8ff 14
bogdanm 0:9b334a45a8ff 15 InterruptManager* InterruptManager::get() {
bogdanm 0:9b334a45a8ff 16 if (NULL == _instance)
bogdanm 0:9b334a45a8ff 17 _instance = new InterruptManager();
bogdanm 0:9b334a45a8ff 18 return _instance;
bogdanm 0:9b334a45a8ff 19 }
bogdanm 0:9b334a45a8ff 20
bogdanm 0:9b334a45a8ff 21 InterruptManager::InterruptManager() {
bogdanm 0:9b334a45a8ff 22 memset(_chains, 0, NVIC_NUM_VECTORS * sizeof(CallChain*));
bogdanm 0:9b334a45a8ff 23 }
bogdanm 0:9b334a45a8ff 24
bogdanm 0:9b334a45a8ff 25 void InterruptManager::destroy() {
bogdanm 0:9b334a45a8ff 26 // Not a good idea to call this unless NO interrupt at all
bogdanm 0:9b334a45a8ff 27 // is under the control of the handler; otherwise, a system crash
bogdanm 0:9b334a45a8ff 28 // is very likely to occur
bogdanm 0:9b334a45a8ff 29 if (NULL != _instance) {
bogdanm 0:9b334a45a8ff 30 delete _instance;
bogdanm 0:9b334a45a8ff 31 _instance = (InterruptManager*)NULL;
bogdanm 0:9b334a45a8ff 32 }
bogdanm 0:9b334a45a8ff 33 }
bogdanm 0:9b334a45a8ff 34
bogdanm 0:9b334a45a8ff 35 InterruptManager::~InterruptManager() {
bogdanm 0:9b334a45a8ff 36 for(int i = 0; i < NVIC_NUM_VECTORS; i++)
bogdanm 0:9b334a45a8ff 37 if (NULL != _chains[i])
bogdanm 0:9b334a45a8ff 38 delete _chains[i];
bogdanm 0:9b334a45a8ff 39 }
bogdanm 0:9b334a45a8ff 40
bogdanm 0:9b334a45a8ff 41 bool InterruptManager::must_replace_vector(IRQn_Type irq) {
bogdanm 0:9b334a45a8ff 42 int irq_pos = get_irq_index(irq);
bogdanm 0:9b334a45a8ff 43
bogdanm 0:9b334a45a8ff 44 if (NULL == _chains[irq_pos]) {
bogdanm 0:9b334a45a8ff 45 _chains[irq_pos] = new CallChain(CHAIN_INITIAL_SIZE);
bogdanm 0:9b334a45a8ff 46 _chains[irq_pos]->add((pvoidf)NVIC_GetVector(irq));
bogdanm 0:9b334a45a8ff 47 return true;
bogdanm 0:9b334a45a8ff 48 }
bogdanm 0:9b334a45a8ff 49 return false;
bogdanm 0:9b334a45a8ff 50 }
bogdanm 0:9b334a45a8ff 51
bogdanm 0:9b334a45a8ff 52 pFunctionPointer_t InterruptManager::add_common(void (*function)(void), IRQn_Type irq, bool front) {
bogdanm 0:9b334a45a8ff 53 int irq_pos = get_irq_index(irq);
bogdanm 0:9b334a45a8ff 54 bool change = must_replace_vector(irq);
bogdanm 0:9b334a45a8ff 55
bogdanm 0:9b334a45a8ff 56 pFunctionPointer_t pf = front ? _chains[irq_pos]->add_front(function) : _chains[irq_pos]->add(function);
bogdanm 0:9b334a45a8ff 57 if (change)
bogdanm 0:9b334a45a8ff 58 NVIC_SetVector(irq, (uint32_t)&InterruptManager::static_irq_helper);
bogdanm 0:9b334a45a8ff 59 return pf;
bogdanm 0:9b334a45a8ff 60 }
bogdanm 0:9b334a45a8ff 61
bogdanm 0:9b334a45a8ff 62 bool InterruptManager::remove_handler(pFunctionPointer_t handler, IRQn_Type irq) {
bogdanm 0:9b334a45a8ff 63 int irq_pos = get_irq_index(irq);
bogdanm 0:9b334a45a8ff 64
bogdanm 0:9b334a45a8ff 65 if (NULL == _chains[irq_pos])
bogdanm 0:9b334a45a8ff 66 return false;
bogdanm 0:9b334a45a8ff 67 if (!_chains[irq_pos]->remove(handler))
bogdanm 0:9b334a45a8ff 68 return false;
bogdanm 0:9b334a45a8ff 69 // If there's a single function left in the chain, swith the interrupt vector
bogdanm 0:9b334a45a8ff 70 // to call that function directly. This way we save both time and space.
bogdanm 0:9b334a45a8ff 71 if (_chains[irq_pos]->size() == 1 && NULL != _chains[irq_pos]->get(0)->get_function()) {
bogdanm 0:9b334a45a8ff 72 NVIC_SetVector(irq, (uint32_t)_chains[irq_pos]->get(0)->get_function());
bogdanm 0:9b334a45a8ff 73 delete _chains[irq_pos];
bogdanm 0:9b334a45a8ff 74 _chains[irq_pos] = (CallChain*) NULL;
bogdanm 0:9b334a45a8ff 75 }
bogdanm 0:9b334a45a8ff 76 return true;
bogdanm 0:9b334a45a8ff 77 }
bogdanm 0:9b334a45a8ff 78
bogdanm 0:9b334a45a8ff 79 void InterruptManager::irq_helper() {
bogdanm 0:9b334a45a8ff 80 _chains[__get_IPSR()]->call();
bogdanm 0:9b334a45a8ff 81 }
bogdanm 0:9b334a45a8ff 82
bogdanm 0:9b334a45a8ff 83 int InterruptManager::get_irq_index(IRQn_Type irq) {
bogdanm 0:9b334a45a8ff 84 return (int)irq + NVIC_USER_IRQ_OFFSET;
bogdanm 0:9b334a45a8ff 85 }
bogdanm 0:9b334a45a8ff 86
bogdanm 0:9b334a45a8ff 87 void InterruptManager::static_irq_helper() {
bogdanm 0:9b334a45a8ff 88 InterruptManager::get()->irq_helper();
bogdanm 0:9b334a45a8ff 89 }
bogdanm 0:9b334a45a8ff 90
bogdanm 0:9b334a45a8ff 91 } // namespace mbed
bogdanm 0:9b334a45a8ff 92
bogdanm 0:9b334a45a8ff 93 #endif