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)

targets/TARGET_STM/TARGET_STM32F1/common_objects.h@146:03e976389d16, 2017-03-16 (annotated)

Committer:
mega64
Date:
Thu Mar 16 06:15:53 2017 +0000
Revision:
146:03e976389d16
fully rebuild, now based on mbed-dev v160

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mega64 146:03e976389d16 1 /* mbed Microcontroller Library
mega64 146:03e976389d16 2 *******************************************************************************
mega64 146:03e976389d16 3 * Copyright (c) 2016, STMicroelectronics
mega64 146:03e976389d16 4 * All rights reserved.
mega64 146:03e976389d16 5 *
mega64 146:03e976389d16 6 * Redistribution and use in source and binary forms, with or without
mega64 146:03e976389d16 7 * modification, are permitted provided that the following conditions are met:
mega64 146:03e976389d16 8 *
mega64 146:03e976389d16 9 * 1. Redistributions of source code must retain the above copyright notice,
mega64 146:03e976389d16 10 * this list of conditions and the following disclaimer.
mega64 146:03e976389d16 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mega64 146:03e976389d16 12 * this list of conditions and the following disclaimer in the documentation
mega64 146:03e976389d16 13 * and/or other materials provided with the distribution.
mega64 146:03e976389d16 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mega64 146:03e976389d16 15 * may be used to endorse or promote products derived from this software
mega64 146:03e976389d16 16 * without specific prior written permission.
mega64 146:03e976389d16 17 *
mega64 146:03e976389d16 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mega64 146:03e976389d16 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mega64 146:03e976389d16 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mega64 146:03e976389d16 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mega64 146:03e976389d16 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mega64 146:03e976389d16 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mega64 146:03e976389d16 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mega64 146:03e976389d16 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mega64 146:03e976389d16 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mega64 146:03e976389d16 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mega64 146:03e976389d16 28 *******************************************************************************
mega64 146:03e976389d16 29 */
mega64 146:03e976389d16 30 #ifndef MBED_COMMON_OBJECTS_H
mega64 146:03e976389d16 31 #define MBED_COMMON_OBJECTS_H
mega64 146:03e976389d16 32
mega64 146:03e976389d16 33 #include "cmsis.h"
mega64 146:03e976389d16 34 #include "PortNames.h"
mega64 146:03e976389d16 35 #include "PeripheralNames.h"
mega64 146:03e976389d16 36 #include "PinNames.h"
mega64 146:03e976389d16 37
mega64 146:03e976389d16 38 #ifdef __cplusplus
mega64 146:03e976389d16 39 extern "C" {
mega64 146:03e976389d16 40 #endif
mega64 146:03e976389d16 41
mega64 146:03e976389d16 42 struct pwmout_s {
mega64 146:03e976389d16 43 PWMName pwm;
mega64 146:03e976389d16 44 PinName pin;
mega64 146:03e976389d16 45 uint32_t prescaler;
mega64 146:03e976389d16 46 uint32_t period;
mega64 146:03e976389d16 47 uint32_t pulse;
mega64 146:03e976389d16 48 uint8_t channel;
mega64 146:03e976389d16 49 uint8_t inverted;
mega64 146:03e976389d16 50 };
mega64 146:03e976389d16 51
mega64 146:03e976389d16 52 struct serial_s {
mega64 146:03e976389d16 53 UARTName uart;
mega64 146:03e976389d16 54 int index; // Used by irq
mega64 146:03e976389d16 55 uint32_t baudrate;
mega64 146:03e976389d16 56 uint32_t databits;
mega64 146:03e976389d16 57 uint32_t stopbits;
mega64 146:03e976389d16 58 uint32_t parity;
mega64 146:03e976389d16 59 PinName pin_tx;
mega64 146:03e976389d16 60 PinName pin_rx;
mega64 146:03e976389d16 61 #if DEVICE_SERIAL_ASYNCH
mega64 146:03e976389d16 62 uint32_t events;
mega64 146:03e976389d16 63 #endif
mega64 146:03e976389d16 64 #if DEVICE_SERIAL_FC
mega64 146:03e976389d16 65 uint32_t hw_flow_ctl;
mega64 146:03e976389d16 66 PinName pin_rts;
mega64 146:03e976389d16 67 PinName pin_cts;
mega64 146:03e976389d16 68 #endif
mega64 146:03e976389d16 69 };
mega64 146:03e976389d16 70
mega64 146:03e976389d16 71 struct spi_s {
mega64 146:03e976389d16 72 SPI_HandleTypeDef handle;
mega64 146:03e976389d16 73 IRQn_Type spiIRQ;
mega64 146:03e976389d16 74 SPIName spi;
mega64 146:03e976389d16 75 PinName pin_miso;
mega64 146:03e976389d16 76 PinName pin_mosi;
mega64 146:03e976389d16 77 PinName pin_sclk;
mega64 146:03e976389d16 78 PinName pin_ssel;
mega64 146:03e976389d16 79 #ifdef DEVICE_SPI_ASYNCH
mega64 146:03e976389d16 80 uint32_t event;
mega64 146:03e976389d16 81 uint8_t transfer_type;
mega64 146:03e976389d16 82 #endif
mega64 146:03e976389d16 83 };
mega64 146:03e976389d16 84
mega64 146:03e976389d16 85 struct i2c_s {
mega64 146:03e976389d16 86 /* The 1st 2 members I2CName i2c
mega64 146:03e976389d16 87 * and I2C_HandleTypeDef handle should
mega64 146:03e976389d16 88 * be kept as the first members of this struct
mega64 146:03e976389d16 89 * to ensure i2c_get_obj to work as expected
mega64 146:03e976389d16 90 */
mega64 146:03e976389d16 91 I2CName i2c;
mega64 146:03e976389d16 92 I2C_HandleTypeDef handle;
mega64 146:03e976389d16 93 uint8_t index;
mega64 146:03e976389d16 94 int hz;
mega64 146:03e976389d16 95 PinName sda;
mega64 146:03e976389d16 96 PinName scl;
mega64 146:03e976389d16 97 IRQn_Type event_i2cIRQ;
mega64 146:03e976389d16 98 IRQn_Type error_i2cIRQ;
mega64 146:03e976389d16 99 uint32_t XferOperation;
mega64 146:03e976389d16 100 volatile uint8_t event;
mega64 146:03e976389d16 101 #if DEVICE_I2CSLAVE
mega64 146:03e976389d16 102 uint8_t slave;
mega64 146:03e976389d16 103 volatile uint8_t pending_slave_tx_master_rx;
mega64 146:03e976389d16 104 volatile uint8_t pending_slave_rx_maxter_tx;
mega64 146:03e976389d16 105 #endif
mega64 146:03e976389d16 106 #if DEVICE_I2C_ASYNCH
mega64 146:03e976389d16 107 uint32_t address;
mega64 146:03e976389d16 108 uint8_t stop;
mega64 146:03e976389d16 109 uint8_t available_events;
mega64 146:03e976389d16 110 #endif
mega64 146:03e976389d16 111 };
mega64 146:03e976389d16 112
mega64 146:03e976389d16 113 #include "gpio_object.h"
mega64 146:03e976389d16 114
mega64 146:03e976389d16 115 #ifdef __cplusplus
mega64 146:03e976389d16 116 }
mega64 146:03e976389d16 117 #endif
mega64 146:03e976389d16 118
mega64 146:03e976389d16 119 /* STM32F1 HAL doesn't provide this API called in rtc_api.c */
mega64 146:03e976389d16 120 #define __HAL_RCC_RTC_CLKPRESCALER(__RTCCLKSource__)
mega64 146:03e976389d16 121
mega64 146:03e976389d16 122 #endif
mega64 146:03e976389d16 123