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

Diff: hal/gpio_api.h

Revision:
0:9b334a45a8ff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hal/gpio_api.h	Thu Oct 01 15:25:22 2015 +0300
@@ -0,0 +1,57 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef MBED_GPIO_API_H
+#define MBED_GPIO_API_H
+
+#include "device.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Set the given pin as GPIO
+ * @param pin The pin to be set as GPIO
+ * @return The GPIO port mask for this pin
+ **/
+uint32_t gpio_set(PinName pin);
+
+/* Checks if gpio object is connected (pin was not initialized with NC)
+ * @param pin The pin to be set as GPIO
+ * @return 0 if port is initialized with NC
+ **/
+int gpio_is_connected(const gpio_t *obj);
+
+/* GPIO object */
+void gpio_init(gpio_t *obj, PinName pin);
+
+void gpio_mode (gpio_t *obj, PinMode mode);
+void gpio_dir  (gpio_t *obj, PinDirection direction);
+
+void gpio_write(gpio_t *obj, int value);
+int  gpio_read (gpio_t *obj);
+
+// the following set of functions are generic and are implemented in the common gpio.c file
+void gpio_init_in(gpio_t* gpio, PinName pin);
+void gpio_init_in_ex(gpio_t* gpio, PinName pin, PinMode mode);
+void gpio_init_out(gpio_t* gpio, PinName pin);
+void gpio_init_out_ex(gpio_t* gpio, PinName pin, int value);
+void gpio_init_inout(gpio_t* gpio, PinName pin, PinDirection direction, PinMode mode, int value);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif