Nothing Special / mbed-STM32F103C8_org

Modification of Mbed-dev library for LQFP48 package microcontrollers: STM32F103C8 (STM32F103C8T6) and STM32F103CB (STM32F103CBT6) (Bluepill boards, Maple mini etc. )

Fork of mbed-dev by mbed official

Warning!

This library is unable to work due to huge changes in the mbed toolchain. Do not use with mbed online!

New wersion:

Import librarymbed-STM32F103C8

Modification of Mbed-dev library for LQFP48 package microcontrollers: STM32F103C8 (STM32F103C8T6) and STM32F103CB (STM32F103CBT6) (Bluepill boards, Maple mini etc. )

Last commit 27 Apr 2017 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 clock (mbed 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)

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

targets/cmsis/TOOLCHAIN_IAR/cmain.S@0:9b334a45a8ff, 2015-10-01 (annotated)

Committer:
bogdanm
Date:
Thu Oct 01 15:25:22 2015 +0300
Revision:
0:9b334a45a8ff
Initial commit on mbed-dev



Replaces mbed-src (now inactive)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /**************************************************
bogdanm 0:9b334a45a8ff 2 *
bogdanm 0:9b334a45a8ff 3 * Part two of the system initialization code, contains C-level
bogdanm 0:9b334a45a8ff 4 * initialization, thumb-2 only variant.
bogdanm 0:9b334a45a8ff 5 *
bogdanm 0:9b334a45a8ff 6 * Copyright 2006 IAR Systems. All rights reserved.
bogdanm 0:9b334a45a8ff 7 *
bogdanm 0:9b334a45a8ff 8 * $Revision: 59783 $
bogdanm 0:9b334a45a8ff 9 *
bogdanm 0:9b334a45a8ff 10 **************************************************/
bogdanm 0:9b334a45a8ff 11
bogdanm 0:9b334a45a8ff 12
bogdanm 0:9b334a45a8ff 13 ; --------------------------------------------------
bogdanm 0:9b334a45a8ff 14 ; Module ?cmain, C-level initialization.
bogdanm 0:9b334a45a8ff 15 ;
bogdanm 0:9b334a45a8ff 16
bogdanm 0:9b334a45a8ff 17
bogdanm 0:9b334a45a8ff 18 SECTION SHT$$PREINIT_ARRAY:CONST:NOROOT(2)
bogdanm 0:9b334a45a8ff 19 SECTION SHT$$INIT_ARRAY:CONST:NOROOT(2)
bogdanm 0:9b334a45a8ff 20
bogdanm 0:9b334a45a8ff 21 SECTION .text:CODE:NOROOT(2)
bogdanm 0:9b334a45a8ff 22
bogdanm 0:9b334a45a8ff 23 PUBLIC __cmain
bogdanm 0:9b334a45a8ff 24 ;; Keep ?main for legacy reasons, it is accessed in countless instances of cstartup.s around the world...
bogdanm 0:9b334a45a8ff 25 PUBLIC ?main
bogdanm 0:9b334a45a8ff 26 EXTWEAK __iar_data_init3
bogdanm 0:9b334a45a8ff 27 EXTWEAK __iar_argc_argv
bogdanm 0:9b334a45a8ff 28 EXTERN __low_level_init
bogdanm 0:9b334a45a8ff 29 EXTERN __call_ctors
bogdanm 0:9b334a45a8ff 30 EXTERN main
bogdanm 0:9b334a45a8ff 31 EXTERN exit
bogdanm 0:9b334a45a8ff 32 EXTERN __iar_dynamic_initialization
bogdanm 0:9b334a45a8ff 33 EXTERN mbed_sdk_init
bogdanm 0:9b334a45a8ff 34 EXTERN SystemInit
bogdanm 0:9b334a45a8ff 35
bogdanm 0:9b334a45a8ff 36 THUMB
bogdanm 0:9b334a45a8ff 37 __cmain:
bogdanm 0:9b334a45a8ff 38 ?main:
bogdanm 0:9b334a45a8ff 39
bogdanm 0:9b334a45a8ff 40 ; Initialize segments.
bogdanm 0:9b334a45a8ff 41 ; __segment_init and __low_level_init are assumed to use the same
bogdanm 0:9b334a45a8ff 42 ; instruction set and to be reachable by BL from the ICODE segment
bogdanm 0:9b334a45a8ff 43 ; (it is safest to link them in segment ICODE).
bogdanm 0:9b334a45a8ff 44
bogdanm 0:9b334a45a8ff 45 FUNCALL __cmain, __low_level_init
bogdanm 0:9b334a45a8ff 46 bl __low_level_init
bogdanm 0:9b334a45a8ff 47 cmp r0,#0
bogdanm 0:9b334a45a8ff 48 beq ?l1
bogdanm 0:9b334a45a8ff 49 FUNCALL __cmain, __iar_data_init3
bogdanm 0:9b334a45a8ff 50 bl __iar_data_init3
bogdanm 0:9b334a45a8ff 51 MOVS r0,#0 ; No parameters
bogdanm 0:9b334a45a8ff 52 FUNCALL __cmain, mbed_sdk_init
bogdanm 0:9b334a45a8ff 53 BL mbed_sdk_init
bogdanm 0:9b334a45a8ff 54 MOVS r0,#0 ; No parameters
bogdanm 0:9b334a45a8ff 55 FUNCALL __cmain, __iar_dynamic_initialization
bogdanm 0:9b334a45a8ff 56 BL __iar_dynamic_initialization ; C++ dynamic initialization
bogdanm 0:9b334a45a8ff 57
bogdanm 0:9b334a45a8ff 58 ?l1:
bogdanm 0:9b334a45a8ff 59 REQUIRE ?l3
bogdanm 0:9b334a45a8ff 60
bogdanm 0:9b334a45a8ff 61 SECTION .text:CODE:NOROOT(2)
bogdanm 0:9b334a45a8ff 62
bogdanm 0:9b334a45a8ff 63 PUBLIC _main
bogdanm 0:9b334a45a8ff 64 PUBLIC _call_main
bogdanm 0:9b334a45a8ff 65 THUMB
bogdanm 0:9b334a45a8ff 66
bogdanm 0:9b334a45a8ff 67 __iar_init$$done: ; Copy initialization is done
bogdanm 0:9b334a45a8ff 68
bogdanm 0:9b334a45a8ff 69 ?l3:
bogdanm 0:9b334a45a8ff 70 _call_main:
bogdanm 0:9b334a45a8ff 71 MOVS r0,#0 ; No parameters
bogdanm 0:9b334a45a8ff 72 FUNCALL __cmain, __iar_argc_argv
bogdanm 0:9b334a45a8ff 73 BL __iar_argc_argv ; Maybe setup command line
bogdanm 0:9b334a45a8ff 74
bogdanm 0:9b334a45a8ff 75 FUNCALL __cmain, main
bogdanm 0:9b334a45a8ff 76 BL main
bogdanm 0:9b334a45a8ff 77 _main:
bogdanm 0:9b334a45a8ff 78 FUNCALL __cmain, exit
bogdanm 0:9b334a45a8ff 79 BL exit
bogdanm 0:9b334a45a8ff 80
bogdanm 0:9b334a45a8ff 81 END