Bare-metal configuration for a Bluepill board.

Warning

It does not work with the Mbed Online Compiler.

Follow these steps to import and compile them with Mbed CLI:

mbed import https://os.mbed.com/users/hudakz/code/Baremetal_Blinky_Bluepill
mbed compile -t GCC_ARM -m bluepill
Revision:
0:a04710facbb6
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TARGET_BLUEPILL/PeripheralPins.c	Thu May 14 05:25:26 2020 +0000
@@ -0,0 +1,216 @@
+/* mbed Microcontroller Library
+ *******************************************************************************
+ * Copyright (c) 2018, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. Neither the name of STMicroelectronics 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 THE COPYRIGHT HOLDER OR 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.
+ *******************************************************************************
+ *
+ * Automatically generated from STM32F103C(8-B)Tx.xml
+ */
+
+#include "PeripheralPins.h"
+#include "mbed_toolchain.h"
+
+//==============================================================================
+// Notes
+//
+// - The pins mentioned Px_y_ALTz are alternative possibilities which use other
+//   HW peripheral instances. You can use them the same way as any other "normal"
+//   pin (i.e. PwmOut pwm(PA_7_ALT0);). These pins are not displayed on the board
+//   pinout image on mbed.org.
+//
+// - The pins which are connected to other components present on the board have
+//   the comment "Connected to xxx". The pin function may not work properly in this
+//   case. These pins may not be displayed on the board pinout image on mbed.org.
+//   Please read the board reference manual and schematic for more information.
+//
+// - Warning: pins connected to the default STDIO_UART_TX and STDIO_UART_RX pins are commented
+//   See https://os.mbed.com/teams/ST/wiki/STDIO for more information.
+//
+//==============================================================================
+
+
+//*** ADC ***
+
+MBED_WEAK const PinMap PinMap_ADC[] = {
+    {PA_0, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC_IN0
+    {PA_1, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC_IN1
+    {PA_2, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC_IN2
+    {PA_3, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 3, 0)}, // ADC_IN3
+    {PA_4, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 4, 0)}, // ADC_IN4
+    {PA_5, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 5, 0)}, // ADC_IN5
+    {PA_6, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 6, 0)}, // ADC_IN6
+    {PA_7, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 7, 0)}, // ADC_IN7
+    {PB_0, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 8, 0)}, // ADC_IN8
+    {PB_1, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 9, 0)}, // ADC_IN9
+    {PC_0, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 10, 0)}, // ADC_IN10
+    {PC_1, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 11, 0)}, // ADC_IN11
+    {PC_2, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 12, 0)}, // ADC_IN12
+    {PC_3, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 13, 0)}, // ADC_IN13
+    {PC_4, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 14, 0)}, // ADC_IN14
+    {PC_5, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 15, 0)}, // ADC_IN15
+    {NC, NC, 0}
+};
+
+const PinMap PinMap_ADC_Internal[] = {
+    {ADC_TEMP, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 16, 0)}, // ADC_IN16
+    {ADC_VREF, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 17, 0)}, // ADC_IN17
+    {NC,   NC,    0}
+};
+
+//*** I2C ***
+
+MBED_WEAK const PinMap PinMap_I2C_SDA[] = {
+    {PB_7,       I2C_1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, 0)},
+    {PB_9,       I2C_1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, 2)},
+    {PB_11,      I2C_2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, 0)},
+    {NC, NC, 0}
+};
+
+MBED_WEAK const PinMap PinMap_I2C_SCL[] = {
+    {PB_6,       I2C_1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, 0)},
+    {PB_8,       I2C_1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, 2)},
+    {PB_10,      I2C_2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, 0)},
+    {NC, NC, 0}
+};
+
+//*** PWM ***
+
+// TIM4 cannot be used because already used by the us_ticker
+// You have to comment all PWM_4
+MBED_WEAK const PinMap PinMap_PWM[] = {
+    {PA_0,       PWM_2,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 0, 1, 0)}, // TIM2_CH1
+    {PA_1,       PWM_2,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 0, 2, 0)}, // TIM2_CH2
+    {PA_2,       PWM_2,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 0, 3, 0)}, // TIM2_CH3
+    {PA_3,       PWM_2,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 0, 4, 0)}, // TIM2_CH4
+    {PA_6,       PWM_3,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 0, 1, 0)}, // TIM3_CH1
+    {PA_7,       PWM_3,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 0, 2, 0)}, // TIM3_CH2
+    {PA_8,       PWM_1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 0, 1, 0)}, // TIM1_CH1
+    {PA_8,       PWM_1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 6, 1, 0)}, // TIM1_CH1
+    {PA_9,       PWM_1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 0, 2, 0)}, // TIM1_CH2
+    {PA_9,       PWM_1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 6, 2, 0)}, // TIM1_CH2
+    {PA_10,      PWM_1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 0, 3, 0)}, // TIM1_CH3
+    {PA_10,      PWM_1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 6, 3, 0)}, // TIM1_CH3
+    {PA_11,      PWM_1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 0, 4, 0)}, // TIM1_CH4
+    {PA_11,      PWM_1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 6, 4, 0)}, // TIM1_CH4
+    {PA_15,      PWM_2,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 8, 1, 0)}, // TIM2_CH1
+    {PB_0,       PWM_1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 6, 2, 1)}, // TIM1_CH2N
+    {PB_0_ALT0,  PWM_3,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 0, 3, 0)}, // TIM3_CH3
+    {PB_0_ALT0,  PWM_3,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 7, 3, 0)}, // TIM3_CH3
+    {PB_1,       PWM_1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 6, 3, 1)}, // TIM1_CH3N
+    {PB_1_ALT0,  PWM_3,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 0, 4, 0)}, // TIM3_CH4
+    {PB_1_ALT0,  PWM_3,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 7, 4, 0)}, // TIM3_CH4
+    {PB_3,       PWM_2,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 8, 2, 0)}, // TIM2_CH2
+    {PB_4,       PWM_3,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 7, 1, 0)}, // TIM3_CH1
+    {PB_5,       PWM_3,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 7, 2, 0)}, // TIM3_CH2
+//  {PB_6,       PWM_4,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 0, 1, 0)}, // TIM4_CH1
+//  {PB_7,       PWM_4,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 0, 2, 0)}, // TIM4_CH2
+//  {PB_8,       PWM_4,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 0, 3, 0)}, // TIM4_CH3
+//  {PB_9,       PWM_4,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 0, 4, 0)}, // TIM4_CH4
+    {PB_10,      PWM_2,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 8, 3, 0)}, // TIM2_CH3
+    {PB_11,      PWM_2,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 8, 4, 0)}, // TIM2_CH4
+    {PB_13,      PWM_1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 0, 1, 1)}, // TIM1_CH1N
+    {PB_14,      PWM_1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 0, 2, 1)}, // TIM1_CH2N
+    {PB_15,      PWM_1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, 0, 3, 1)}, // TIM1_CH3N
+    {NC, NC, 0}
+};
+
+//*** SERIAL ***
+
+MBED_WEAK const PinMap PinMap_UART_TX[] = {
+    {PA_2,       UART_2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, 0)},
+    {PA_9,       UART_1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, 0)},
+    {PB_6,       UART_1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, 3)}, // GPIO_Remap_USART1
+    {PB_10,      UART_3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, 0)},
+    {PC_10,      UART_3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, 5)}, // GPIO_PartialRemap_USART3
+    {NC, NC, 0}
+};
+
+MBED_WEAK const PinMap PinMap_UART_RX[] = {
+    {PA_3,       UART_2,  STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLUP, 0)},
+    {PA_10,      UART_1,  STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLUP, 0)},
+    {PB_7,       UART_1,  STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLUP, 3)}, // GPIO_Remap_USART1
+    {PB_11,      UART_3,  STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLUP, 0)},
+    {PC_11,      UART_3,  STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLUP, 5)}, // GPIO_PartialRemap_USART3
+    {NC, NC, 0}
+};
+
+MBED_WEAK const PinMap PinMap_UART_RTS[] = {
+    {PA_1,       UART_2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, 0)},
+    {PA_12,      UART_1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, 0)},
+    {PB_14,      UART_3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, 0)},
+    {NC, NC, 0}
+};
+
+MBED_WEAK const PinMap PinMap_UART_CTS[] = {
+    {PA_0,       UART_2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, 0)},
+    {PA_11,      UART_1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, 0)},
+    {PB_13,      UART_3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, 0)},
+    {NC, NC, 0}
+};
+
+//*** SPI ***
+
+MBED_WEAK const PinMap PinMap_SPI_MOSI[] = {
+    {PA_7,       SPI_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, 0)},
+    {PB_5,       SPI_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, 1)},
+    {PB_15,      SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, 0)},
+    {NC, NC, 0}
+};
+
+MBED_WEAK const PinMap PinMap_SPI_MISO[] = {
+    {PA_6,       SPI_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, 0)},
+    {PB_4,       SPI_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, 1)},
+    {PB_14,      SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, 0)},
+    {NC, NC, 0}
+};
+
+MBED_WEAK const PinMap PinMap_SPI_SCLK[] = {
+    {PA_5,       SPI_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, 0)},
+    {PB_3,       SPI_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, 1)},
+    {PB_13,      SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, 0)},
+    {NC, NC, 0}
+};
+
+MBED_WEAK const PinMap PinMap_SPI_SSEL[] = {
+    {PA_4,       SPI_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, 0)},
+    {PA_15,      SPI_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, 1)},
+    {PB_12,      SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, 0)},
+    {NC, NC, 0}
+};
+
+//*** CAN ***
+
+MBED_WEAK const PinMap PinMap_CAN_RD[] = {
+    {PA_11,      CAN_1, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0)},
+    {PB_8,       CAN_1, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 10)},
+    {NC, NC, 0}
+};
+
+MBED_WEAK const PinMap PinMap_CAN_TD[] = {
+    {PA_12,      CAN_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, 0)},
+    {PB_9,       CAN_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, 10)},
+    {NC, NC, 0}
+};