bsp/lpc176x: New BSP

1 files changed, 91 insertions, 0 deletions

diff --git a/c/src/lib/libbsp/arm/lpc176x/include/system-clocks.h b/c/src/lib/libbsp/arm/lpc176x/include/system-clocks.h
new file mode 100644
index 0000000000..0180141f99
--- /dev/null
+++ b/c/src/lib/libbsp/arm/lpc176x/include/system-clocks.h
@@ -0,0 +1,91 @@
+/**
+ * @file
+ *
+ * @ingroup lpc176x_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.com/license/LICENSE.
+ */
+
+#ifndef LIBBSP_ARM_LPC176X_SYSTEM_CLOCKS_H
+#define LIBBSP_ARM_LPC176X_SYSTEM_CLOCKS_H
+
+#include <bsp/lpc176x.h>
+#include <bsp/timer-defs.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/**
+ * @defgroup lpc176x_clock System Clocks
+ *
+ * @ingroup lpc176x
+ *
+ * @brief System clocks.
+ *
+ * @{
+ */
+
+/**
+ * @brief Initializes the standard timer.
+ *
+ * This function uses Timer 1.
+ */
+void lpc176x_timer_initialize( void );
+
+/**
+ * @brief Returns current standard timer value in CPU clocks.
+ *
+ * @return This function uses Timer 1.
+ */
+static inline unsigned lpc176x_get_timer1( void )
+{
+  return LPC176X_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 lpc176x_micro_seconds_delay( unsigned us );
+
+/**
+ * @brief Returns the PLL output clock frequency in [Hz].
+ *
+ * @return Returns zero in case of an unexpected PLL input frequency.
+ */
+unsigned lpc176x_pllclk( void );
+
+/**
+ * @brief Returns the CPU clock frequency in [Hz].
+ *
+ * @return Returns zero in case of an unexpected PLL input frequency.
+ */
+unsigned lpc176x_cclk( void );
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* LIBBSP_ARM_LPC176X_SYSTEM_CLOCKS_H */