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/CAN.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 /* 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 #include "drivers/CAN.h"
mega64 146:03e976389d16 17
mega64 146:03e976389d16 18 #if DEVICE_CAN
mega64 146:03e976389d16 19
mega64 146:03e976389d16 20 #include "cmsis.h"
mega64 146:03e976389d16 21
mega64 146:03e976389d16 22 namespace mbed {
mega64 146:03e976389d16 23
mega64 146:03e976389d16 24 static void donothing() {}
mega64 146:03e976389d16 25
mega64 146:03e976389d16 26 CAN::CAN(PinName rd, PinName td) : _can(), _irq() {
mega64 146:03e976389d16 27 // No lock needed in constructor
mega64 146:03e976389d16 28
mega64 146:03e976389d16 29 for (int i = 0; i < sizeof _irq / sizeof _irq[0]; i++) {
mega64 146:03e976389d16 30 _irq[i].attach(donothing);
mega64 146:03e976389d16 31 }
mega64 146:03e976389d16 32
mega64 146:03e976389d16 33 can_init(&_can, rd, td);
mega64 146:03e976389d16 34 can_irq_init(&_can, (&CAN::_irq_handler), (uint32_t)this);
mega64 146:03e976389d16 35 }
mega64 146:03e976389d16 36
mega64 146:03e976389d16 37 CAN::~CAN() {
mega64 146:03e976389d16 38 // No lock needed in destructor
mega64 146:03e976389d16 39 can_irq_free(&_can);
mega64 146:03e976389d16 40 can_free(&_can);
mega64 146:03e976389d16 41 }
mega64 146:03e976389d16 42
mega64 146:03e976389d16 43 int CAN::frequency(int f) {
mega64 146:03e976389d16 44 lock();
mega64 146:03e976389d16 45 int ret = can_frequency(&_can, f);
mega64 146:03e976389d16 46 unlock();
mega64 146:03e976389d16 47 return ret;
mega64 146:03e976389d16 48 }
mega64 146:03e976389d16 49
mega64 146:03e976389d16 50 int CAN::write(CANMessage msg) {
mega64 146:03e976389d16 51 lock();
mega64 146:03e976389d16 52 int ret = can_write(&_can, msg, 0);
mega64 146:03e976389d16 53 unlock();
mega64 146:03e976389d16 54 return ret;
mega64 146:03e976389d16 55 }
mega64 146:03e976389d16 56
mega64 146:03e976389d16 57 int CAN::read(CANMessage &msg, int handle) {
mega64 146:03e976389d16 58 lock();
mega64 146:03e976389d16 59 int ret = can_read(&_can, &msg, handle);
mega64 146:03e976389d16 60 unlock();
mega64 146:03e976389d16 61 return ret;
mega64 146:03e976389d16 62 }
mega64 146:03e976389d16 63
mega64 146:03e976389d16 64 void CAN::reset() {
mega64 146:03e976389d16 65 lock();
mega64 146:03e976389d16 66 can_reset(&_can);
mega64 146:03e976389d16 67 unlock();
mega64 146:03e976389d16 68 }
mega64 146:03e976389d16 69
mega64 146:03e976389d16 70 unsigned char CAN::rderror() {
mega64 146:03e976389d16 71 lock();
mega64 146:03e976389d16 72 int ret = can_rderror(&_can);
mega64 146:03e976389d16 73 unlock();
mega64 146:03e976389d16 74 return ret;
mega64 146:03e976389d16 75 }
mega64 146:03e976389d16 76
mega64 146:03e976389d16 77 unsigned char CAN::tderror() {
mega64 146:03e976389d16 78 lock();
mega64 146:03e976389d16 79 int ret = can_tderror(&_can);
mega64 146:03e976389d16 80 unlock();
mega64 146:03e976389d16 81 return ret;
mega64 146:03e976389d16 82 }
mega64 146:03e976389d16 83
mega64 146:03e976389d16 84 void CAN::monitor(bool silent) {
mega64 146:03e976389d16 85 lock();
mega64 146:03e976389d16 86 can_monitor(&_can, (silent) ? 1 : 0);
mega64 146:03e976389d16 87 unlock();
mega64 146:03e976389d16 88 }
mega64 146:03e976389d16 89
mega64 146:03e976389d16 90 int CAN::mode(Mode mode) {
mega64 146:03e976389d16 91 lock();
mega64 146:03e976389d16 92 int ret = can_mode(&_can, (CanMode)mode);
mega64 146:03e976389d16 93 unlock();
mega64 146:03e976389d16 94 return ret;
mega64 146:03e976389d16 95 }
mega64 146:03e976389d16 96
mega64 146:03e976389d16 97 int CAN::filter(unsigned int id, unsigned int mask, CANFormat format, int handle) {
mega64 146:03e976389d16 98 lock();
mega64 146:03e976389d16 99 int ret = can_filter(&_can, id, mask, format, handle);
mega64 146:03e976389d16 100 unlock();
mega64 146:03e976389d16 101 return ret;
mega64 146:03e976389d16 102 }
mega64 146:03e976389d16 103
mega64 146:03e976389d16 104 void CAN::attach(Callback<void()> func, IrqType type) {
mega64 146:03e976389d16 105 lock();
mega64 146:03e976389d16 106 if (func) {
mega64 146:03e976389d16 107 _irq[(CanIrqType)type].attach(func);
mega64 146:03e976389d16 108 can_irq_set(&_can, (CanIrqType)type, 1);
mega64 146:03e976389d16 109 } else {
mega64 146:03e976389d16 110 _irq[(CanIrqType)type].attach(donothing);
mega64 146:03e976389d16 111 can_irq_set(&_can, (CanIrqType)type, 0);
mega64 146:03e976389d16 112 }
mega64 146:03e976389d16 113 unlock();
mega64 146:03e976389d16 114 }
mega64 146:03e976389d16 115
mega64 146:03e976389d16 116 void CAN::_irq_handler(uint32_t id, CanIrqType type) {
mega64 146:03e976389d16 117 CAN *handler = (CAN*)id;
mega64 146:03e976389d16 118 handler->_irq[type].call();
mega64 146:03e976389d16 119 }
mega64 146:03e976389d16 120
mega64 146:03e976389d16 121 void CAN::lock() {
mega64 146:03e976389d16 122 _mutex.lock();
mega64 146:03e976389d16 123 }
mega64 146:03e976389d16 124
mega64 146:03e976389d16 125 void CAN::unlock() {
mega64 146:03e976389d16 126 _mutex.unlock();
mega64 146:03e976389d16 127 }
mega64 146:03e976389d16 128
mega64 146:03e976389d16 129 } // namespace mbed
mega64 146:03e976389d16 130
mega64 146:03e976389d16 131 #endif