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)

cmsis/core_cmSecureAccess.h

Committer:
mega64
Date:
2017-04-27
Revision:
148:8b0b02bf146f
Parent:
146:03e976389d16

File content as of revision 148:8b0b02bf146f:

/**************************************************************************//**
 * @file     core_cmSecureAccess.h
 * @brief    CMSIS Cortex-M Core Secure Access Header File
 * @version  XXX
 * @date     10. June 2016
 *
 * @note
 *
 ******************************************************************************/
/* Copyright (c) 2016 ARM LIMITED

   All rights reserved.
   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions are met:
   - Redistributions of source code must retain the above copyright
     notice, this list of conditions and the following disclaimer.
   - Redistributions in binary form must reproduce the above copyright
     notice, this list of conditions and the following disclaimer in the
     documentation and/or other materials provided with the distribution.
   - Neither the name of ARM nor the names of its contributors may be used
     to endorse or promote products derived from this software without
     specific prior written permission.
   *
   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   POSSIBILITY OF SUCH DAMAGE.
   ---------------------------------------------------------------------------*/


#ifndef __CORE_CM_SECURE_ACCESS_H
#define __CORE_CM_SECURE_ACCESS_H


/* ###########################  Core Secure Access  ########################### */

#ifdef FEATURE_UVISOR
#include "uvisor-lib/uvisor-lib.h"

/* Secure uVisor implementation. */

/** Set the value at the target address.
 *
 * Equivalent to: `*address = value`.
 * @param address[in]  Target address
 * @param value[in]    Value to write at the address location.
 */
#define SECURE_WRITE(address, value) \
    uvisor_write(public_box, UVISOR_RGW_SHARED, address, value, UVISOR_RGW_OP_WRITE, 0xFFFFFFFFUL)

/** Get the value at the target address.
 *
 * @param address[in]  Target address
 * @returns The value `*address`.
 */
#define SECURE_READ(address) \
    uvisor_read(public_box, UVISOR_RGW_SHARED, address, UVISOR_RGW_OP_READ, 0xFFFFFFFFUL)

/** Get the selected bits at the target address.
 *
 * @param address[in]  Target address
 * @param mask[in]     Bits to select out of the target address
 * @returns The value `*address & mask`.
 */
#define SECURE_BITS_GET(address, mask) \
    UVISOR_BITS_GET(public_box, UVISOR_RGW_SHARED, address, mask)

/** Check the selected bits at the target address.
 *
 * @param address[in]  Address at which to check the bits
 * @param mask[in]     Bits to select out of the target address
 * @returns The value `((*address & mask) == mask)`.
 */
#define SECURE_BITS_CHECK(address, mask) \
    UVISOR_BITS_CHECK(public_box, UVISOR_RGW_SHARED, address, mask)

/** Set the selected bits to 1 at the target address.
 *
 * Equivalent to: `*address |= mask`.
 * @param address[in]  Target address
 * @param mask[in]     Bits to select out of the target address
 */
#define SECURE_BITS_SET(address, mask) \
    UVISOR_BITS_SET(public_box, UVISOR_RGW_SHARED, address, mask)

/** Clear the selected bits at the target address.
 *
 * Equivalent to: `*address &= ~mask`.
 * @param address[in]  Target address
 * @param mask[in]     Bits to select out of the target address
 */
#define SECURE_BITS_CLEAR(address, mask) \
    UVISOR_BITS_CLEAR(public_box, UVISOR_RGW_SHARED, address, mask)

/** Set the selected bits at the target address to the given value.
 *
 * Equivalent to: `*address = (*address & ~mask) | (value & mask)`.
 * @param address[in]  Target address
 * @param mask[in]     Bits to select out of the target address
 * @param value[in]    Value to write at the address location. Note: The value
 *                     must be already shifted to the correct bit position
 */
#define SECURE_BITS_SET_VALUE(address, mask, value) \
    UVISOR_BITS_SET_VALUE(public_box, UVISOR_RGW_SHARED, address, mask, value)

/** Toggle the selected bits at the target address.
 *
 * Equivalent to: `*address ^= mask`.
 * @param address[in]  Target address
 * @param mask[in]     Bits to select out of the target address
 */
#define SECURE_BITS_TOGGLE(address, mask) \
    UVISOR_BITS_TOGGLE(public_box, UVISOR_RGW_SHARED, address, mask)

#else

/* Insecure fallback implementation. */

/** Set the value at the target address.
 *
 * Equivalent to: `*address = value`.
 * @param address[in]  Target address
 * @param value[in]    Value to write at the address location.
 */
#define SECURE_WRITE(address, value) \
    *(address) = (value)

/** Get the value at the target address.
 *
 * @param address[in]  Target address
 * @returns The value `*address`.
 */
#define SECURE_READ(address) \
    (*(address))

/** Get the selected bits at the target address.
 *
 * @param address[in]  Target address
 * @param mask[in]     Bits to select out of the target address
 * @returns The value `*address & mask`.
 */
#define SECURE_BITS_GET(address, mask) \
    (*(address) & (mask))

/** Check the selected bits at the target address.
 *
 * @param address[in]  Address at which to check the bits
 * @param mask[in]     Bits to select out of the target address
 * @returns The value `((*address & mask) == mask)`.
 */
#define SECURE_BITS_CHECK(address, mask) \
    ((*(address) & (mask)) == (mask))

/** Set the selected bits to 1 at the target address.
 *
 * Equivalent to: `*address |= mask`.
 * @param address[in]  Target address
 * @param mask[in]     Bits to select out of the target address
 */
#define SECURE_BITS_SET(address, mask) \
    *(address) |= (mask)

/** Clear the selected bits at the target address.
 *
 * Equivalent to: `*address &= ~mask`.
 * @param address[in]  Target address
 * @param mask[in]     Bits to select out of the target address
 */
#define SECURE_BITS_CLEAR(address, mask) \
    *(address) &= ~(mask)

/** Set the selected bits at the target address to the given value.
 *
 * Equivalent to: `*address = (*address & ~mask) | (value & mask)`.
 * @param address[in]  Target address
 * @param mask[in]     Bits to select out of the target address
 * @param value[in]    Value to write at the address location. Note: The value
 *                     must be already shifted to the correct bit position
 */
#define SECURE_BITS_SET_VALUE(address, mask, value) \
    *(address) = (*(address) & ~(mask)) | ((value) & (mask))

/** Toggle the selected bits at the target address.
 *
 * Equivalent to: `*address ^= mask`.
 * @param address[in]  Target address
 * @param mask[in]     Bits to select out of the target address
 */
#define SECURE_BITS_TOGGLE(address, mask) \
    *(address) ^= (mask)

#endif

#endif /* __CORE_CM_SECURE_ACCESS_H */