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Cleaned up the jobygps examples.

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This commit is contained in:
Fergus Noble
2012-01-25 23:11:46 -08:00
committed by Uwe Hermann
parent ac29b654a9
commit d071a9ffde
3 changed files with 21 additions and 56 deletions
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44
examples/stm32/f2/jobygps/miniblink/miniblink.c
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@@ -2,6 +2,7 @@
* This file is part of the libopencm3 project.
*
* Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
* Copyright (C) 2011 Fergus Noble <fergusnoble@gmail.com>
*
* 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
@@ -17,23 +18,17 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
//#include <libopencm3/stm32/rcc.h>
#include <libopencm3/stm32/f2/rcc.h>
#include <libopencm3/stm32/f2/gpio.h>
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);
rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_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));
/* Set GPIO3 and GPIO4 (in GPIO port C) to 'output push-pull'. */
/* Using API functions: */
MMIO32(RCC_BASE + 0x30) |= (1 << 2);
gpio_mode_setup(GPIOC, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO3 | GPIO4);
}
@@ -43,32 +38,15 @@ int main(void)
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");
gpio_set(GPIOC, GPIO3);
gpio_clear(GPIOC, GPIO4);
/* Blink the LEDs (PC3, PC4) on the board. */
while (1)
{
/* 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);
gpio_toggle(GPIOC, GPIO3);
gpio_toggle(GPIOC, GPIO4);
for (i = 0; i < 800000; i++) /* Wait a bit. */
__asm__("nop");
}