From d1e789b5b7816f92264cb833fb4ea60b27e886fc Mon Sep 17 00:00:00 2001 From: Piotr Esden-Tempski Date: Sun, 11 Nov 2012 20:36:21 -0800 Subject: [examples] Added obldc strip led example. --- examples/stm32/f1/obldc-strip/led/Makefile | 25 +++++++++++ examples/stm32/f1/obldc-strip/led/led.c | 65 ++++++++++++++++++++++++++++ examples/stm32/f1/obldc-strip/obldc-strip.ld | 31 +++++++++++++ 3 files changed, 121 insertions(+) create mode 100644 examples/stm32/f1/obldc-strip/led/Makefile create mode 100644 examples/stm32/f1/obldc-strip/led/led.c create mode 100644 examples/stm32/f1/obldc-strip/obldc-strip.ld diff --git a/examples/stm32/f1/obldc-strip/led/Makefile b/examples/stm32/f1/obldc-strip/led/Makefile new file mode 100644 index 0000000..f8ff540 --- /dev/null +++ b/examples/stm32/f1/obldc-strip/led/Makefile @@ -0,0 +1,25 @@ +## +## This file is part of the libopencm3 project. +## +## Copyright (C) 2009 Uwe Hermann +## +## This library is free software: you can redistribute it and/or modify +## it under the terms of the GNU Lesser General Public License as published by +## the Free Software Foundation, either version 3 of the License, or +## (at your option) any later version. +## +## This library is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU Lesser General Public License for more details. +## +## You should have received a copy of the GNU Lesser General Public License +## along with this library. If not, see . +## + +BINARY = led + +LDSCRIPT = ../obldc-strip.ld + +include ../../Makefile.include + diff --git a/examples/stm32/f1/obldc-strip/led/led.c b/examples/stm32/f1/obldc-strip/led/led.c new file mode 100644 index 0000000..e9fb92f --- /dev/null +++ b/examples/stm32/f1/obldc-strip/led/led.c @@ -0,0 +1,65 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2012 Piotr Esden-Tempski + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see . + */ + +#include +#include + +void clock_setup(void) +{ + /* Set STM32 to 64 MHz. */ + rcc_clock_setup_in_hsi_out_64mhz(); + + /* Enable alternate function peripheral clock. */ + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_AFIOEN); + + /* Enable GPIOB clock. */ + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN); +} + +void gpio_setup(void) +{ + + /* Configure PB4 as GPIO. */ + AFIO_MAPR |= AFIO_MAPR_SWJ_CFG_FULL_SWJ_NO_JNTRST; + + /* Set GPIO4 and 5 (in GPIO port B) to 'output push-pull'. */ + gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_PUSHPULL, GPIO4 | GPIO5); + +} + +int main(void) +{ + int i; + + clock_setup(); + gpio_setup(); + + /* Blink the LEDs on the board. */ + while (1) { + gpio_toggle(GPIOB, GPIO4); /* LED on/off */ + for (i = 0; i < 8000000; i++) /* Wait a bit. */ + __asm__("nop"); + gpio_toggle(GPIOB, GPIO5); /* LED on/off */ + for (i = 0; i < 8000000; i++) /* Wait a bit. */ + __asm__("nop"); + } + + return 0; +} diff --git a/examples/stm32/f1/obldc-strip/obldc-strip.ld b/examples/stm32/f1/obldc-strip/obldc-strip.ld new file mode 100644 index 0000000..9778070 --- /dev/null +++ b/examples/stm32/f1/obldc-strip/obldc-strip.ld @@ -0,0 +1,31 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2009 Uwe Hermann + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see . + */ + +/* Linker script for Open-BLDC (STM32F103CBT6, 128K flash, 20K RAM). */ + +/* Define memory regions. */ +MEMORY +{ + rom (rx) : ORIGIN = 0x08000000, LENGTH = 128K + ram (rwx) : ORIGIN = 0x20000000, LENGTH = 20K +} + +/* Include the common ld script. */ +INCLUDE libopencm3_stm32f1.ld + -- cgit v1.2.3