From cadbc0145bf2eb407f24987620636f4e52b293d4 Mon Sep 17 00:00:00 2001 From: Fergus Noble Date: Thu, 15 Sep 2011 02:53:16 -0700 Subject: First F2 example working! --- examples/stm32f2/jobygps/miniblink/Makefile | 23 ++++++++ examples/stm32f2/jobygps/miniblink/README | 6 ++ examples/stm32f2/jobygps/miniblink/miniblink.c | 77 +++++++++++++++++++++++++ examples/stm32f2/jobygps/miniblink/miniblink.ld | 31 ++++++++++ 4 files changed, 137 insertions(+) create mode 100644 examples/stm32f2/jobygps/miniblink/Makefile create mode 100644 examples/stm32f2/jobygps/miniblink/README create mode 100644 examples/stm32f2/jobygps/miniblink/miniblink.c create mode 100644 examples/stm32f2/jobygps/miniblink/miniblink.ld (limited to 'examples/stm32f2/jobygps/miniblink') diff --git a/examples/stm32f2/jobygps/miniblink/Makefile b/examples/stm32f2/jobygps/miniblink/Makefile new file mode 100644 index 0000000..24a478b --- /dev/null +++ b/examples/stm32f2/jobygps/miniblink/Makefile @@ -0,0 +1,23 @@ +## +## This file is part of the libopencm3 project. +## +## Copyright (C) 2009 Uwe Hermann +## +## This program is free software: you can redistribute it and/or modify +## it under the terms of the GNU General Public License as published by +## the Free Software Foundation, either version 3 of the License, or +## (at your option) any later version. +## +## This program 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 General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with this program. If not, see . +## + +BINARY = miniblink + +include ../../Makefile.include + diff --git a/examples/stm32f2/jobygps/miniblink/README b/examples/stm32f2/jobygps/miniblink/README new file mode 100644 index 0000000..0130112 --- /dev/null +++ b/examples/stm32f2/jobygps/miniblink/README @@ -0,0 +1,6 @@ +------------------------------------------------------------------------------ +README +------------------------------------------------------------------------------ + +This is the smallest-possible example program using libopencm3. + diff --git a/examples/stm32f2/jobygps/miniblink/miniblink.c b/examples/stm32f2/jobygps/miniblink/miniblink.c new file mode 100644 index 0000000..2927df5 --- /dev/null +++ b/examples/stm32f2/jobygps/miniblink/miniblink.c @@ -0,0 +1,77 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2009 Uwe Hermann + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +//#include +#include + +void gpio_setup(void) +{ + /* Enable GPIOC clock. */ + /* Manually: */ + // RCC_APB2ENR |= RCC_APB2ENR_IOPCEN; + /* Using API functions: */ + //rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN); + + /* Set GPIO12 (in GPIO port C) to 'output push-pull'. */ + /* Manually: */ + // GPIOC_CRH = (GPIO_CNF_OUTPUT_PUSHPULL << (((12 - 8) * 4) + 2)); + // GPIOC_CRH |= (GPIO_MODE_OUTPUT_2_MHZ << ((12 - 8) * 4)); + /* Using API functions: */ + MMIO32(RCC_BASE+0x30) |= (1<<2); + gpio_mode_setup(GPIOC, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO3|GPIO4); +} + +int main(void) +{ + int i; + + gpio_setup(); + + /* Blink the LED (PC12) on the board. */ + while (1) { + /* Manually: */ + // GPIOC_BSRR = GPIO12; /* LED off */ + // for (i = 0; i < 800000; i++) /* Wait a bit. */ + // __asm__("nop"); + // GPIOC_BRR = GPIO12; /* LED on */ + // for (i = 0; i < 800000; i++) /* Wait a bit. */ + // __asm__("nop"); + + /* Using API functions gpio_set()/gpio_clear(): */ + // gpio_set(GPIOC, GPIO12); /* LED off */ + // for (i = 0; i < 800000; i++) /* Wait a bit. */ + // __asm__("nop"); + // gpio_clear(GPIOC, GPIO12); /* LED on */ + // for (i = 0; i < 800000; i++) /* Wait a bit. */ + // __asm__("nop"); + + /* Using API function gpio_toggle(): */ + //gpio_toggle(GPIOC, GPIO3); /* LED on/off */ + gpio_set(GPIOC, GPIO3); + gpio_clear(GPIOC, GPIO4); + for (i = 0; i < 800000; i++) /* Wait a bit. */ + __asm__("nop"); + gpio_clear(GPIOC, GPIO3); + gpio_set(GPIOC, GPIO4); + for (i = 0; i < 800000; i++) /* Wait a bit. */ + __asm__("nop"); + } + + return 0; +} diff --git a/examples/stm32f2/jobygps/miniblink/miniblink.ld b/examples/stm32f2/jobygps/miniblink/miniblink.ld new file mode 100644 index 0000000..cfe9ab7 --- /dev/null +++ b/examples/stm32f2/jobygps/miniblink/miniblink.ld @@ -0,0 +1,31 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2009 Uwe Hermann + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* Linker script for Olimex STM32-H103 (STM32F103RBT6, 128K flash, 20K RAM). */ + +/* Define memory regions. */ +MEMORY +{ + rom (rx) : ORIGIN = 0x08000000, LENGTH = 256K + ram (rwx) : ORIGIN = 0x20000000, LENGTH = 64K +} + +/* Include the common ld script. */ +INCLUDE libopencm3_stm32f2.ld + -- cgit v1.2.3