1 files changed, 89 insertions, 0 deletions
diff --git a/bsps/arm/lpc24xx/include/bsp/system-clocks.h b/bsps/arm/lpc24xx/include/bsp/system-clocks.h
new file mode 100644
index 0000000000..564d12ec10
--- /dev/null
+++ b/bsps/arm/lpc24xx/include/bsp/system-clocks.h
@@ -0,0 +1,89 @@
+/**
+ * @file
+ *
+ * @ingroup lpc24xx_clocks
+ *
+ * @brief System clocks.
+ */
+
+/*
+ * Copyright (c) 2008, 2009
+ * embedded brains GmbH
+ * Obere Lagerstr. 30
+ * D-82178 Puchheim
+ * Germany
+ * <rtems@embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#ifndef LIBBSP_ARM_LPC24XX_SYSTEM_CLOCKS_H
+#define LIBBSP_ARM_LPC24XX_SYSTEM_CLOCKS_H
+
+#include <bsp/lpc24xx.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/**
+ * @defgroup lpc24xx_clock System Clocks
+ *
+ * @ingroup lpc24xx
+ *
+ * @brief System clocks.
+ *
+ * @{
+ */
+
+/**
+ * @brief Initializes the standard timer.
+ *
+ * This function uses Timer 1.
+ */
+void lpc24xx_timer_initialize(void);
+
+/**
+ * @brief Returns current standard timer value in CPU clocks.
+ *
+ * This function uses Timer 1.
+ */
+static inline unsigned lpc24xx_timer(void)
+{
+  return T1TC;
+}
+
+/**
+ * @brief Delay for @a us micro seconds.
+ *
+ * This function uses the standard timer and assumes that the CPU frequency is
+ * in whole MHz numbers.  The delay value @a us will be converted to CPU ticks
+ * and there is no protection against integer overflows.
+ *
+ * This function uses Timer 1.
+ */
+void lpc24xx_micro_seconds_delay(unsigned us);
+
+/**
+ * @brief Returns the PLL output clock frequency in [Hz].
+ *
+ * Returns zero in case of an unexpected PLL input frequency.
+ */
+unsigned lpc24xx_pllclk(void);
+
+/**
+ * @brief Returns the CPU clock frequency in [Hz].
+ *
+ * Returns zero in case of an unexpected PLL input frequency.
+ */
+unsigned lpc24xx_cclk(void);
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* LIBBSP_ARM_LPC24XX_SYSTEM_CLOCKS_H */