Rename F1 examples folder.

examples/stm32f1/stm32-discovery/fancyblink/fancyblink.c

@@ -0,0 +1,61 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+ * Copyright (C) 2011 Damjan Marion <damjan.marion@gmail.com>
+ * Copyright (C) 2011 Mark Panajotovic <marko@electrontube.org>
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+#include <libopencm3/stm32/rcc.h>
+#include <libopencm3/stm32/gpio.h>
+
+/* Set STM32 to 24 MHz. */
+void clock_setup(void)
+{
+	rcc_clock_setup_in_hse_8mhz_out_24mhz();
+
+	/* Enable GPIOC clock. */
+	rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN);
+}
+
+void gpio_setup(void)
+{
+	/* Set GPIO8/9 (in GPIO port C) to 'output push-pull'. */
+	gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_50_MHZ,
+		      GPIO_CNF_OUTPUT_PUSHPULL, GPIO8);
+	gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_50_MHZ,
+		      GPIO_CNF_OUTPUT_PUSHPULL, GPIO9);
+}
+
+int main(void)
+{
+	int i;
+
+	clock_setup();
+	gpio_setup();
+
+	/* Set one LED for wigwag effect when toggling. */
+	gpio_set(GPIOC, GPIO8);
+
+	/* Blink the LEDs (PC8 and PC9) on the board. */
+	while (1) {
+		gpio_toggle(GPIOC, GPIO8 | GPIO9); /* Toggle LEDs. */
+		for (i = 0; i < 2000000; i++)      /* Wait a bit. */
+			__asm__("nop");
+	}
+
+	return 0;
+}