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Added some utility functions in libsam for TC. (Neil H.)

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This commit is contained in:
Cristian Maglie
2012-08-24 22:15:23 +02:00
parent a267a8a774
commit c3e44f363e
4 changed files with 82 additions and 27 deletions
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4
hardware/arduino/sam/system/libsam/include/tc.h
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@@ -68,6 +68,10 @@ extern void TC_Stop( Tc *pTc, uint32_t dwChannel ) ;
extern uint32_t TC_FindMckDivisor( uint32_t dwFreq, uint32_t dwMCk, uint32_t *dwDiv, uint32_t *dwTcClks, uint32_t dwBoardMCK ) ;
extern uint32_t TC_ReadCV(Tc *p_tc, uint32_t ul_channel);
extern uint32_t TC_GetStatus(Tc *p_tc, uint32_t ul_channel);
extern void TC_SetRA(Tc *tc, uint32_t chan, uint32_t v) ;
extern void TC_SetRB(Tc *tc, uint32_t chan, uint32_t v) ;

49
hardware/arduino/sam/system/libsam/source/tc.c
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@@ -173,14 +173,63 @@ extern uint32_t TC_FindMckDivisor( uint32_t dwFreq, uint32_t dwMCk, uint32_t *dw
return 1 ;
}
/**
* \brief Read Timer Counter Counter Value on the selected TC & channel.
*
* \param p_tc Pointer to a TC instance.
* \param ul_channel Channel to configure.
*
* \return RC value.
*/
uint32_t TC_ReadCV(Tc *p_tc, uint32_t ul_channel){
return p_tc->TC_CHANNEL[ul_channel].TC_CV;
}
/**
* \brief Get current status on the selected channel.
*
* \param p_tc Pointer to a TC instance.
* \param ul_channel Channel to configure.
*
* \return The current TC status.
*/
uint32_t TC_GetStatus(Tc *p_tc, uint32_t ul_channel)
{
TcChannel *tc_channel;
tc_channel = p_tc->TC_CHANNEL + ul_channel;
return tc_channel->TC_SR;
}
/**
* \brief Set RA on the selected channel.
*
* \param tc Pointer to a TC instance.
* \param chan Channel to configure.
* \param v New value for RA.
*/
void TC_SetRA(Tc *tc, uint32_t chan, uint32_t v) {
tc->TC_CHANNEL[chan].TC_RA = v;
}
/**
* \brief Set RB on the selected channel.
*
* \param tc Pointer to a TC instance.
* \param chan Channel to configure.
* \param v New value for RB.
*/
void TC_SetRB(Tc *tc, uint32_t chan, uint32_t v) {
tc->TC_CHANNEL[chan].TC_RB = v;
}
/**
* \brief Set RC on the selected channel.
*
* \param tc Pointer to a TC instance.
* \param chan Channel to configure.
* \param v New value for RC.
*/
void TC_SetRC(Tc *tc, uint32_t chan, uint32_t v) {
tc->TC_CHANNEL[chan].TC_RC = v;
}