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Diffstat (limited to 'c/src/lib/libbsp/arm/nds/libnds/include/nds/timers.h')
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1 files changed, 0 insertions, 204 deletions
diff --git a/c/src/lib/libbsp/arm/nds/libnds/include/nds/timers.h b/c/src/lib/libbsp/arm/nds/libnds/include/nds/timers.h deleted file mode 100644 index 12f94b582a..0000000000 --- a/c/src/lib/libbsp/arm/nds/libnds/include/nds/timers.h +++ /dev/null @@ -1,204 +0,0 @@ -/*--------------------------------------------------------------------------------- - Copyright (C) 2005 - Michael Noland (joat) - Jason Rogers (dovoto) - Dave Murphy (WinterMute) - - This software is provided 'as-is', without any express or implied - warranty. In no event will the authors be held liable for any - damages arising from the use of this software. - - Permission is granted to anyone to use this software for any - purpose, including commercial applications, and to alter it and - redistribute it freely, subject to the following restrictions: - - 1. The origin of this software must not be misrepresented; you - must not claim that you wrote the original software. If you use - this software in a product, an acknowledgment in the product - documentation would be appreciated but is not required. - 2. Altered source versions must be plainly marked as such, and - must not be misrepresented as being the original software. - 3. This notice may not be removed or altered from any source - distribution. - ----------------------------------------------------------------------------------*/ - - -/*! \file timers.h - \brief Contains defines and macros for ARM7 and ARM9 timer operation. - - The timers are fed with a 33.4 MHz source on the ARM9. The ARM7 - timing hasn't been tested yet, but is likely to be the same. -*/ - -//--------------------------------------------------------------------------------- -#ifndef NDS_TIMERS_INCLUDE -#define NDS_TIMERS_INCLUDE -//--------------------------------------------------------------------------------- - - -//--------------------------------------------------------------------------------- -#ifdef __cplusplus -extern "C" { -#endif -//--------------------------------------------------------------------------------- - - -#include <nds/jtypes.h> - -// Timers - -//! A macro that calculates %TIMER_DATA(n) settings for a given frequency of n. -/*! Use the appropriate macro depending on clock divider: \n - <ul> - <li> %TIMER_FREQ(f) </li> - <li> %TIMER_FREQ_64(f) </li> - <li> %TIMER_FREQ_256(f) </li> - <li> %TIMER_FREQ_1024(f) </li> - </ul> - Clock divider is controlled by %TIMER_CR(n) \n - \n - <b>Example Usage:</b> - - %TIMER_DATA(0) = %TIMER_FREQ(freq_in_hz); \n - %TIMER_CR(0) = %TIMER_DIV1 | %TIMER_ENABLE; \n - \n - Max frequency is: 33554432Hz\n - Min frequency is: 512Hz\n -*/ -#define TIMER_FREQ(n) (-0x2000000/(n)) - -//! A macro that calculates %TIMER_DATA(n) settings for a given frequency of n. -/*! Use the appropriate macro depending on clock divider: \n - <ul> - <li> %TIMER_FREQ(f) </li> - <li> %TIMER_FREQ_64(f) </li> - <li> %TIMER_FREQ_256(f) </li> - <li> %TIMER_FREQ_1024(f) </li> - </ul> - - - Clock divider is controlled by %TIMER_CR(n) \n - \n - <b>Example Usage:</b> - %TIMER_DATA(x) = %TIMER_FREQ_64(freq_in_hz)\n - \n - Max frequency is: 524288Hz\n - Min frequency is: 8Hz\n -*/ -#define TIMER_FREQ_64(n) (-(0x2000000>>6)/(n)) - -//! A macro that calculates %TIMER_DATA(n) settings for a given frequency of n. -/*! Use the appropriate macro depending on clock divider: \n - <ul> - <li> %TIMER_FREQ(f) </li> - <li> %TIMER_FREQ_64(f) </li> - <li> %TIMER_FREQ_256(f) </li> - <li> %TIMER_FREQ_1024(f) </li> - </ul> <p> - - Clock divider is controlled by %TIMER_CR(n) \n - \n - <b>Example Usage:</b> - %TIMER_DATA(x) = %TIMER_FREQ_256(freq_in_hz)\n - \n - Max frequency is: 131072Hz\n - Min frequency is: 2Hz\n -*/ -#define TIMER_FREQ_256(n) (-(0x2000000>>8)/(n)) - -//! A macro that calculates %TIMER_DATA(n) settings for a given frequency of n. -/*! Use the appropriate macro depending on clock divider: \n - <ul> - <li> %TIMER_FREQ(f) </li> - <li> %TIMER_FREQ_64(f) </li> - <li> %TIMER_FREQ_256(f) </li> - <li> TIMER_FREQ_1024(f) </li> - </ul> - - Clock divider is controlled by %TIMER_CR(n) \n - \n - <b>Example Usage:</b> - %TIMER_DATA(x) = %TIMER_FREQ_1024(freq_in_hz)\n - \n - Max frequency is: 32768Hz\n - Min frequency is: 0.5Hz\n -*/ -#define TIMER_FREQ_1024(n) (-(0x2000000>>10)/(n)) - - -//! Same as %TIMER_DATA(0). -#define TIMER0_DATA (*(vuint16*)0x04000100) -//! Same as %TIMER_DATA(1). -#define TIMER1_DATA (*(vuint16*)0x04000104) -//! Same as %TIMER_DATA(2). -#define TIMER2_DATA (*(vuint16*)0x04000108) -//! Same as %TIMER_DATA(3). -#define TIMER3_DATA (*(vuint16*)0x0400010C) - -//! Returns a dereferenced pointer to the data register for timer number "n". -/*! \see TIMER_CR(n) - \see TIMER_FREQ(n) - - %TIMER_DATA(n) when set will latch that value into the counter. Everytime the - counter rolls over %TIMER_DATA(0) will return to the latched value. This allows - you to control the frequency of the timer using the following formula:\n - %TIMER_DATA(x) = -(0x2000000/(freq * divider)); \n - \n - <b>Example Usage:</b> - %TIMER_DATA(0) = value; were 0 can be 0 through 3 and value is 16 bits. -*/ -#define TIMER_DATA(n) (*(vuint16*)(0x04000100+((n)<<2))) - -// Timer control registers -//! Same as %TIMER_CR(0). -#define TIMER0_CR (*(vuint16*)0x04000102) -//! Same as %TIMER_CR(1). -#define TIMER1_CR (*(vuint16*)0x04000106) -//! Same as %TIMER_CR(2). -#define TIMER2_CR (*(vuint16*)0x0400010A) -//! Same as %TIMER_CR(3). -#define TIMER3_CR (*(vuint16*)0x0400010E) - -//! Returns a dereferenced pointer to the data register for timer control Register. -/*! <b>Example Usage:</b> %TIMER_CR(x) = %TIMER_ENABLE | %TIMER_DIV_64; \n - \n - Possible bit defines: \n - - \see TIMER_ENABLE - \see TIMER_IRQ_REQ - \see TIMER_DIV_1 - \see TIMER_DIV_64 - \see TIMER_DIV_256 - \see TIMER_DIV_1024 -*/ -#define TIMER_CR(n) (*(vuint16*)(0x04000102+((n)<<2))) - -//! Enables the timer. -#define TIMER_ENABLE (1<<7) - -//! Causes the timer to request an Interupt on overflow. -#define TIMER_IRQ_REQ (1<<6) - -//! When set will cause the timer to count when the timer below overflows (unavailable for timer 0). -#define TIMER_CASCADE (1<<2) - -//! Causes the timer to count at 33.514Mhz. -#define TIMER_DIV_1 (0) -//! Causes the timer to count at (33.514 / 64) Mhz. -#define TIMER_DIV_64 (1) -//! Causes the timer to count at (33.514 / 256) Mhz. -#define TIMER_DIV_256 (2) -//! Causes the timer to count at (33.514 / 1024)Mhz. -#define TIMER_DIV_1024 (3) - -//--------------------------------------------------------------------------------- -#ifdef __cplusplus -} -#endif -//--------------------------------------------------------------------------------- - -//--------------------------------------------------------------------------------- -#endif -//--------------------------------------------------------------------------------- - |