altos: Start work on stm32f1 support

[fw/altos] / src / stm32f103-nucleo / hello.c

diff --git a/src/stm32f103-nucleo/hello.c b/src/stm32f103-nucleo/hello.c
new file mode 100644 (file)
index 0000000..938afd2
--- /dev/null
+++ b/src/stm32f103-nucleo/hello.c
@@ -0,0 +1,38 @@
+/*
+ * Copyright © 2023 Keith Packard <keithp@keithp.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
+ * the Free Software Foundation, either version 2 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, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include <ao.h>
+
+void
+ao_delay(AO_TICK_TYPE ticks)
+{
+       uint32_t then = ao_time();
+       while ((int32_t) (ao_time() - then) < (int32_t) ticks)
+               ao_arch_nop();
+}
+
+int main(void)
+{
+       ao_clock_init();
+       ao_timer_init();
+       ao_led_init();
+       for (;;) {
+               ao_led_for(AO_LED_GREEN, 50);
+               ao_delay(50);
+       }
+}