From 7d3608f74637162a8d7da9983095c61cbb63852d Mon Sep 17 00:00:00 2001 From: Piotr Esden-Tempski Date: Mon, 14 Feb 2011 19:59:24 -0800 Subject: Added fanciblink for Lisa/M. --- examples/stm32/lisa-m/fancyblink/fancyblink.c | 67 +++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 examples/stm32/lisa-m/fancyblink/fancyblink.c (limited to 'examples/stm32/lisa-m/fancyblink/fancyblink.c') diff --git a/examples/stm32/lisa-m/fancyblink/fancyblink.c b/examples/stm32/lisa-m/fancyblink/fancyblink.c new file mode 100644 index 0000000..efada62 --- /dev/null +++ b/examples/stm32/lisa-m/fancyblink/fancyblink.c @@ -0,0 +1,67 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2009 Uwe Hermann + * Copyright (C) 2011 Piotr Esden-Tempski + * + * 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 + +/* Set STM32 to 72 MHz. */ +void clock_setup(void) +{ + rcc_clock_setup_in_hse_16mhz_out_72mhz(); + + /* Enable GPIOC clock. */ + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN); + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN); + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_AFIOEN); + +} + +void gpio_setup(void) +{ + /* Set GPIO12 (in GPIO port C) to 'output push-pull'. */ + gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_PUSHPULL, GPIO13); + gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_PUSHPULL, GPIO4); + + AFIO_MAPR |= AFIO_MAPR_SWJ_CFG_FULL_SWJ_NO_JNTRST; + + /* preconfigure the led's */ + gpio_set(GPIOB, GPIO4); /* switch off led */ + gpio_clear(GPIOC, GPIO13); /* switch on led */ +} + +int main(void) +{ + int i; + + clock_setup(); + gpio_setup(); + + /* Blink the LED (PC12) on the board. */ + while (1) { + gpio_toggle(GPIOC, GPIO13); /* LED on/off */ + gpio_toggle(GPIOB, GPIO4); /* LED on/off */ + for (i = 0; i < 800000; i++) /* Wait a bit. */ + __asm__("nop"); + } + + return 0; +} -- cgit v1.2.3