1 files changed, 40 insertions, 0 deletions
diff --git a/firmware/src/picc/pll.c b/firmware/src/picc/pll.c
new file mode 100644
index 0000000..bed08ef
--- /dev/null
+++ b/firmware/src/picc/pll.c
@@ -0,0 +1,40 @@
+
+#include <sys/types.h>
+#include <lib_AT91SAM7.h>
+#include <os/pio_irq.h>
+#include <os/dbgu.h>
+#include "../openpcd.h"
+
+void pll_inhibit(int inhibit)
+{
+	if (inhibit)
+		AT91F_PIO_SetOutput(AT91C_BASE_PIOA, OPENPICC_PIO_PLL_INHIBIT);
+	else
+		AT91F_PIO_ClearOutput(AT91C_BASE_PIOA, OPENPICC_PIO_PLL_INHIBIT);
+}
+
+int pll_is_locked(void)
+{
+	return AT91F_PIO_IsInputSet(AT91C_BASE_PIOA, OPENPICC_PIO_PLL_LOCK);
+}
+
+static void pll_lock_change_cb(u_int32_t pio)
+{
+	DEBUGPCRF("PLL LOCK: %d", pll_is_locked());
+#if 1
+	if (pll_is_locked())
+		led_switch(1, 1);
+	else
+		led_switch(1, 0);
+#endif
+}
+
+void pll_init(void)
+{
+	AT91F_PIO_CfgOutput(AT91C_BASE_PIOA, OPENPICC_PIO_PLL_INHIBIT);
+	AT91F_PIO_CfgInput(AT91C_BASE_PIOA, OPENPICC_PIO_PLL_LOCK);
+	pll_inhibit(0);
+
+	pio_irq_register(OPENPICC_PIO_PLL_LOCK, &pll_lock_change_cb);
+	pio_irq_enable(OPENPICC_PIO_PLL_LOCK);
+}