From 1969718a5aa9e9bc62a9605d6a22c63ca32af0ee Mon Sep 17 00:00:00 2001 From: Kyle Isom Date: Sat, 29 Dec 2018 07:05:25 -0800 Subject: [PATCH] Add CMSIS bluepill blink. --- .gitignore | 7 ++++++ blue-pill/hello/include/README | 39 ++++++++++++++++++++++++++++ blue-pill/hello/lib/README | 46 ++++++++++++++++++++++++++++++++++ blue-pill/hello/platformio.ini | 15 +++++++++++ blue-pill/hello/src/main.cpp | 31 +++++++++++++++++++++++ blue-pill/hello/test/README | 11 ++++++++ 6 files changed, 149 insertions(+) create mode 100644 blue-pill/hello/include/README create mode 100644 blue-pill/hello/lib/README create mode 100644 blue-pill/hello/platformio.ini create mode 100644 blue-pill/hello/src/main.cpp create mode 100644 blue-pill/hello/test/README diff --git a/.gitignore b/.gitignore index fefbff5..8088f61 100644 --- a/.gitignore +++ b/.gitignore @@ -60,3 +60,10 @@ hardware.blif hardware.asc hardware.bin +# platformio cruft +.pio +.pioenvs +.piolibdeps +.clang_complete +.gcc-flags.json + diff --git a/blue-pill/hello/include/README b/blue-pill/hello/include/README new file mode 100644 index 0000000..194dcd4 --- /dev/null +++ b/blue-pill/hello/include/README @@ -0,0 +1,39 @@ + +This directory is intended for project header files. + +A header file is a file containing C declarations and macro definitions +to be shared between several project source files. You request the use of a +header file in your project source file (C, C++, etc) located in `src` folder +by including it, with the C preprocessing directive `#include'. + +```src/main.c + +#include "header.h" + +int main (void) +{ + ... +} +``` + +Including a header file produces the same results as copying the header file +into each source file that needs it. Such copying would be time-consuming +and error-prone. With a header file, the related declarations appear +in only one place. If they need to be changed, they can be changed in one +place, and programs that include the header file will automatically use the +new version when next recompiled. The header file eliminates the labor of +finding and changing all the copies as well as the risk that a failure to +find one copy will result in inconsistencies within a program. + +In C, the usual convention is to give header files names that end with `.h'. +It is most portable to use only letters, digits, dashes, and underscores in +header file names, and at most one dot. + +Read more about using header files in official GCC documentation: + +* Include Syntax +* Include Operation +* Once-Only Headers +* Computed Includes + +https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html diff --git a/blue-pill/hello/lib/README b/blue-pill/hello/lib/README new file mode 100644 index 0000000..6debab1 --- /dev/null +++ b/blue-pill/hello/lib/README @@ -0,0 +1,46 @@ + +This directory is intended for project specific (private) libraries. +PlatformIO will compile them to static libraries and link into executable file. + +The source code of each library should be placed in a an own separate directory +("lib/your_library_name/[here are source files]"). + +For example, see a structure of the following two libraries `Foo` and `Bar`: + +|--lib +| | +| |--Bar +| | |--docs +| | |--examples +| | |--src +| | |- Bar.c +| | |- Bar.h +| | |- library.json (optional, custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html +| | +| |--Foo +| | |- Foo.c +| | |- Foo.h +| | +| |- README --> THIS FILE +| +|- platformio.ini +|--src + |- main.c + +and a contents of `src/main.c`: +``` +#include +#include + +int main (void) +{ + ... +} + +``` + +PlatformIO Library Dependency Finder will find automatically dependent +libraries scanning project source files. + +More information about PlatformIO Library Dependency Finder +- https://docs.platformio.org/page/librarymanager/ldf.html diff --git a/blue-pill/hello/platformio.ini b/blue-pill/hello/platformio.ini new file mode 100644 index 0000000..cf023b6 --- /dev/null +++ b/blue-pill/hello/platformio.ini @@ -0,0 +1,15 @@ +; PlatformIO Project Configuration File +; +; Build options: build flags, source filter +; Upload options: custom upload port, speed and extra flags +; Library options: dependencies, extra library storages +; Advanced options: extra scripting +; +; Please visit documentation for the other options and examples +; https://docs.platformio.org/page/projectconf.html + +[env:bluepill_f103c8] +platform = ststm32 +board = bluepill_f103c8 +framework = cmsis +upload_protocol = stlink diff --git a/blue-pill/hello/src/main.cpp b/blue-pill/hello/src/main.cpp new file mode 100644 index 0000000..10195b5 --- /dev/null +++ b/blue-pill/hello/src/main.cpp @@ -0,0 +1,31 @@ +#include "stm32f1xx.h" +#define LEDPORT (GPIOC) +#define LED1 (13) +#define ENABLE_GPIO_CLOCK (RCC->APB2ENR |= RCC_APB2ENR_IOPCEN) +#define _MODER CRH +#define GPIOMODER (GPIO_CRH_MODE13_0) + + +void +ms_delay(int ms) +{ + while (ms-- > 0) { + volatile int x=500; + while (x-- > 0) + __asm("nop"); + } +} + +// Alternates blue and green LEDs quickly +int +main(void) +{ + ENABLE_GPIO_CLOCK; // enable the clock to GPIO + LEDPORT->_MODER |= GPIOMODER; // set pins to be general purpose output + for (;;) { + ms_delay(500); + LEDPORT->ODR ^= (1<