display-training: include/clk/xmega/osc.h Source File

00001 
00038 #ifndef CLK_XMEGA_OSC_H_INCLUDED
00039 #define CLK_XMEGA_OSC_H_INCLUDED
00040 
00041 #include <regs/xmega_osc.h>
00042 
00048 #ifndef __ASSEMBLY__
00049 
00050 #include <assert.h>
00051 #include <types.h>
00052 
00059 __always_inline static void osc_enable_internal(uint8_t id)
00060 {
00061         uint8_t ctrl;
00062 
00063         ctrl = osc_read_reg(CTRL);
00064         ctrl |= 1 << id;
00065         osc_write_reg(CTRL, ctrl);
00066 }
00067 
00077 #ifdef BOARD_XOSC_HZ
00078 __always_inline static void osc_enable_external(uint8_t id)
00079 {
00080         assert(id == OSC_ID_XOSC);
00081 
00082         osc_write_reg(XOSCCTRL, OSC_BF(FRQRANGE, BOARD_XOSC_RANGE)
00083                         | OSC_BF(XOSCSEL, BOARD_XOSC_TYPE));
00084 }
00085 #else
00086 ERROR_FUNC(osc_no_external, "No external oscillator on the selected board");
00087 
00088 static inline void osc_enable_external(uint8_t id)
00089 {
00090         osc_no_external();
00091 }
00092 #endif
00093 
00094 __always_inline static void osc_disable(uint8_t id)
00095 {
00096         uint8_t ctrl;
00097 
00098         ctrl = osc_read_reg(CTRL);
00099         ctrl &= ~(1 << id);
00100         osc_write_reg(CTRL, ctrl);
00101 }
00102 
00103 static inline bool osc_is_running(uint8_t id)
00104 {
00105         return osc_read_reg(STATUS) & (1 << id);
00106 }
00107 
00108 #endif /* __ASSEMBLY__ */
00109 
00111 
00112 #endif /* CLK_XMEGA_OSC_H_INCLUDED */