efm32: energy management unit headers and example

examples/efm32/tinygecko/efm32-tg-stk3300/lightswitch/lightswitch.c

@@ -17,72 +17,14 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <libopencm3/efm32/tinygecko/gpio.h>
-#include <libopencm3/efm32/tinygecko/cmu.h>
-
-void gpio_setup(void);
-void led_on(void);
-void led_off(void);
-bool pb0_get(void);
-bool pb1_get(void);
-
 /** @file
  * Example for switching the User LED of the EFM32-TG-STK330 eval board on and
  * off using the buttons.
  */
 
-int main(void)
-{
-	gpio_setup();
+#include "lightswitch-common.c"
 
-	while(1) {
-		if (pb0_get()) led_on();
-		if (pb1_get()) led_off();
-	};
-}
-
-/**
- * Enable GPIO, and set up port D7 as an output pin.
- */
-
-void gpio_setup(void)
-{
-	// Before GPIO works, according to d0034_efm32tg_reference_manual.pdf
-	// note in section 28.3.7, we'll have to enable GPIO in CMU_HFPERCLKEN0
-	
-	CMU_HFPERCLKEN0 |= CMU_HFPERCLKEN0_GPIO;
-
-	// The User LED is connected to PD7 to the plus side of the LED
-	// according to t0011_efm32_tiny_gecko_stk_user_manual.pdf figures 16.2
-	// and 16.3 (called UIF_LED0)
-	
-	gpio_set_mode(GPIO_PD, GPIO_MODE_PUSHPULL, GPIO7);
-
-	// Button PB0 is connected to pin PD8 and pulled low when pushed,
-	// Botton PB1 to pin PB11 (sources as for LED). Pullups and debouncing
-	// are alreay in place in hardware, so no filtering or pullup is
-	// needed.
-
-	gpio_set_mode(GPIO_PD, GPIO_MODE_INPUT, GPIO8);
-	gpio_set_mode(GPIO_PB, GPIO_MODE_INPUT, GPIO11);
-}
-
-void led_on(void)
-{
-	gpio_set(GPIO_PD, GPIO7);
-}
-
-void led_off(void)
-{
-	gpio_clear(GPIO_PD, GPIO7);
-}
-
-bool pb0_get(void)
-{
-	return !gpio_get(GPIO_PD, GPIO8);
-}
-
-bool pb1_get(void)
-{
-	return !gpio_get(GPIO_PB, GPIO11);
-}
+/** Change this include to -busywait, -interrupt, or -prs (not implemented
+ * yet). The overall behavior will not change, but different implementations
+ * will be used. */
+#include "lightswitch-busywait.c"