Konstantin Kochin
Demo of the usage USBDevice library with Blue Pill STM32F103C8T6 board.
STM32F103C8T6 USBSerial Demo
This project contains demo of the USB serial usage for a cheap developer board Blue Pill with STM32F103C8T6 mcu.
The USB serial port provides a good communication channel between PC and microcontroller. Especially it can be useful for a debug purposes.
Notes
- by the specifications this board has only 64KB of the flash, but actually it can have 128KB, that will be useful for a debug builds as it requires about 100KB of the flash for this demo.
- the board can have some problems with an USB because it has wrong value of the pull-up resistor
- for steady reading of data from a serial port, the project contains python script serial_reader.py (it requires PySerial and six python libraries), that is steady to the board reloading
- the project depends on the fork of the USBDevice library. This fork contains some fixes and support of the BLUE_PILL_STM32F103C8 target.
- the mbed-os now contains correct code for a clock initialization of the BLUE_PILL_STM32F103C8 target, so you don't need to adjust the board clocks separately
main.cpp@0:24604e97c40c, 2017-08-04 (annotated)
- Committer:
- Konstantin Kochin
- Date:
- Fri Aug 04 18:41:22 2017 +0300
- Revision:
- 0:24604e97c40c
Initial release
The project contains autogenerated makefile for a debug build,
the program itself (main.cpp) and the helper python script
'serial_reader.py' to read a data from a serial port.
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| Konstantin Kochin |
0:24604e97c40c | 1 | /** |
| Konstantin Kochin |
0:24604e97c40c | 2 | * The example of the program for STM32F103C8T6 (Blue Pill board). |
| Konstantin Kochin |
0:24604e97c40c | 3 | * |
| Konstantin Kochin |
0:24604e97c40c | 4 | * This program demonstrate led and usb serial port usage. |
| Konstantin Kochin |
0:24604e97c40c | 5 | * |
| Konstantin Kochin |
0:24604e97c40c | 6 | * @author Kochin Konstantin |
| Konstantin Kochin |
0:24604e97c40c | 7 | */ |
| Konstantin Kochin |
0:24604e97c40c | 8 | #include "USBSerial.h" |
| Konstantin Kochin |
0:24604e97c40c | 9 | #include "mbed.h" |
| Konstantin Kochin |
0:24604e97c40c | 10 | #include "stdio.h" |
| Konstantin Kochin |
0:24604e97c40c | 11 | |
| Konstantin Kochin |
0:24604e97c40c | 12 | DigitalOut myled(LED1); |
| Konstantin Kochin |
0:24604e97c40c | 13 | USBSerial usbSerial(0x1f00, 0x2012, 0x0001, false); |
| Konstantin Kochin |
0:24604e97c40c | 14 | |
| Konstantin Kochin |
0:24604e97c40c | 15 | int main() |
| Konstantin Kochin |
0:24604e97c40c | 16 | { |
| Konstantin Kochin |
0:24604e97c40c | 17 | uint32_t counter = 0; |
| Konstantin Kochin |
0:24604e97c40c | 18 | |
| Konstantin Kochin |
0:24604e97c40c | 19 | while (true) { |
| Konstantin Kochin |
0:24604e97c40c | 20 | usbSerial.printf("I am a USB serial port. Tick %d.\n", counter); |
| Konstantin Kochin |
0:24604e97c40c | 21 | counter++; |
| Konstantin Kochin |
0:24604e97c40c | 22 | |
| Konstantin Kochin |
0:24604e97c40c | 23 | myled = !myled; |
| Konstantin Kochin |
0:24604e97c40c | 24 | |
| Konstantin Kochin |
0:24604e97c40c | 25 | wait_ms(1000); |
| Konstantin Kochin |
0:24604e97c40c | 26 | } |
| Konstantin Kochin |
0:24604e97c40c | 27 | } |