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Diffstat (limited to 'examples/stm32/f2/jobygps/miniblink/miniblink.c')
-rw-r--r--examples/stm32/f2/jobygps/miniblink/miniblink.c44
1 files changed, 11 insertions, 33 deletions
diff --git a/examples/stm32/f2/jobygps/miniblink/miniblink.c b/examples/stm32/f2/jobygps/miniblink/miniblink.c
index 8db2450..0e9b017 100644
--- a/examples/stm32/f2/jobygps/miniblink/miniblink.c
+++ b/examples/stm32/f2/jobygps/miniblink/miniblink.c
@@ -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");
}