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|
/*****************************************************************************
**
** Name: mt_userdef.c
**
** Description: User-defined MicroTuner software interface
**
** Functions
** Requiring
** Implementation: MT_WriteSub
** MT_ReadSub
** MT_Sleep
**
** References: None
**
** Exports: None
**
** CVS ID: $Id: mt_userdef.c,v 1.2 2006/10/26 16:39:18 software Exp $
** CVS Source: $Source: /export/home/cvsroot/software/tuners/MT2266/mt_userdef.c,v $
**
** Revision History:
**
** SCR Date Author Description
** -------------------------------------------------------------------------
** N/A 03-25-2004 DAD Original
**
*****************************************************************************/
#include "mt2266_userdef.h"
/*****************************************************************************
**
** Name: MT_WriteSub
**
** Description: Write values to device using a two-wire serial bus.
**
** Parameters: handle - User-specific I/O parameter that was
** passed to tuner's Open function.
** addr - device serial bus address (value passed
** as parameter to MTxxxx_Open)
** subAddress - serial bus sub-address (Register Address)
** data - pointer to the Data to be written to the
** device
** cnt - number of bytes/registers to be written
**
** Returns: status:
** MT_OK - No errors
** MT_COMM_ERR - Serial bus communications error
** user-defined
**
** Notes: This is a callback function that is called from the
** the tuning algorithm. You MUST provide code for this
** function to write data using the tuner's 2-wire serial
** bus.
**
** The handle parameter is a user-specific argument.
** If additional arguments are needed for the user's
** serial bus read/write functions, this argument can be
** used to supply the necessary information.
** The handle parameter is initialized in the tuner's Open
** function.
**
** Revision History:
**
** SCR Date Author Description
** -------------------------------------------------------------------------
** N/A 03-25-2004 DAD Original
**
*****************************************************************************/
UData_t MT2266_WriteSub(Handle_t handle,
UData_t addr,
U8Data subAddress,
U8Data *data,
UData_t cnt)
{
UData_t status = MT_OK; /* Status to be returned */
/*
** ToDo: Add code here to implement a serial-bus write
** operation to the MTxxxx tuner. If successful,
** return MT_OK.
*/
PUserData userData;
U8Data * buffer;
U8Data i;
U8Data blocks;
U8Data remains;
blocks = (U8Data) (cnt / 17);
remains = (U8Data) (cnt % 17);
userData = (PUserData) handle;
buffer = data;
for (i = 0; i < blocks; i++) {
status = Standard_writeTunerRegisters (userData->demodulator, userData->chip, (unsigned short)subAddress + (unsigned short)i * 17, 17, buffer);
if (status) goto exit;
buffer += 17;
}
if (remains)
{
status = Standard_writeTunerRegisters (userData->demodulator, userData->chip, (unsigned short)subAddress + (unsigned short)i * 17, remains, buffer);
if (status) goto exit;
}
exit:
return (status);
}
/*****************************************************************************
**
** Name: MT_ReadSub
**
** Description: Read values from device using a two-wire serial bus.
**
** Parameters: handle - User-specific I/O parameter that was
** passed to tuner's Open function.
** addr - device serial bus address (value passed
** as parameter to MTxxxx_Open)
** subAddress - serial bus sub-address (Register Address)
** data - pointer to the Data to be written to the
** device
** cnt - number of bytes/registers to be written
**
** Returns: status:
** MT_OK - No errors
** MT_COMM_ERR - Serial bus communications error
** user-defined
**
** Notes: This is a callback function that is called from the
** the tuning algorithm. You MUST provide code for this
** function to read data using the tuner's 2-wire serial
** bus.
**
** The handle parameter is a user-specific argument.
** If additional arguments are needed for the user's
** serial bus read/write functions, this argument can be
** used to supply the necessary information.
** The handle parameter is initialized in the tuner's Open
** function.
**
** Revision History:
**
** SCR Date Author Description
** -------------------------------------------------------------------------
** N/A 03-25-2004 DAD Original
**
*****************************************************************************/
UData_t MT2266_ReadSub(Handle_t handle,
UData_t addr,
U8Data subAddress,
U8Data *data,
UData_t cnt)
{
UData_t status = MT_OK; /* Status to be returned */
/*
** ToDo: Add code here to implement a serial-bus read
** operation to the MTxxxx tuner. If successful,
** return MT_OK.
*/
PUserData userData;
U8Data buffer[8];
U8Data i;
/*
** ToDo: Add code here to implement a serial-bus read
** operation to the MTxxxx tuner. If successful,
** return true.
*/
userData = (PUserData)handle;
for (i = 0; i < cnt; i++)
{
status = Standard_readTunerRegisters (userData->demodulator, userData->chip, subAddress + i, (U8Data)1, &buffer[0]);
if (status) goto exit;
*(data + i) = buffer[0];
}
exit:
return (status);
}
/*****************************************************************************
**
** Name: MT_Sleep
**
** Description: Delay execution for "nMinDelayTime" milliseconds
**
** Parameters: handle - User-specific I/O parameter that was
** passed to tuner's Open function.
** nMinDelayTime - Delay time in milliseconds
**
** Returns: None.
**
** Notes: This is a callback function that is called from the
** the tuning algorithm. You MUST provide code that
** blocks execution for the specified period of time.
**
** Revision History:
**
** SCR Date Author Description
** -------------------------------------------------------------------------
** N/A 03-25-2004 DAD Original
**
*****************************************************************************/
void MT2266_Sleep(Handle_t handle,
UData_t nMinDelayTime)
{
PUserData userData;
/*
** ToDo: Add code here to implement a OS blocking
** for a period of "nMinDelayTime" milliseconds.
*/
userData = (PUserData)handle;
User_delay (userData->demodulator, (unsigned long) nMinDelayTime);
}
#if defined(MT2060_CNT)
#if MT2060_CNT > 0
/*****************************************************************************
**
** Name: MT_TunerGain (MT2060 only)
**
** Description: Measure the relative tuner gain using the demodulator
**
** Parameters: handle - User-specific I/O parameter that was
** passed to tuner's Open function.
** pMeas - Tuner gain (1/100 of dB scale).
** ie. 1234 = 12.34 (dB)
**
** Returns: status:
** MT_OK - No errors
** user-defined errors could be set
**
** Notes: This is a callback function that is called from the
** the 1st IF location routine. You MUST provide
** code that measures the relative tuner gain in a dB
** (not linear) scale. The return value is an integer
** value scaled to 1/100 of a dB.
**
** Revision History:
**
** SCR Date Author Description
** -------------------------------------------------------------------------
** N/A 06-16-2004 DAD Original
** N/A 11-30-2004 DAD Renamed from MT_DemodInputPower. This name
** better describes what this function does.
**
*****************************************************************************/
int IfGainTable[256] = {
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
6000,
5993,
5987,
5981,
5975,
5968,
5962,
5956,
5950,
5949,
5948,
5947,
5946,
5945,
5944,
5943,
5942,
5941,
5940,
5939,
5938,
5937,
5937,
5936,
5935,
5934,
5933,
5932,
5931,
5930,
5929,
5928,
5927,
5926,
5925,
5925,
5924,
5923,
5922,
5921,
5920,
5919,
5918,
5917,
5916,
5915,
5914,
5913,
5912,
5912,
5911,
5910,
5909,
5908,
5907,
5906,
5905,
5904,
5903,
5902,
5901,
5900,
5900,
5885,
5871,
5857,
5842,
5828,
5814,
5800,
5785,
5771,
5757,
5742,
5728,
5714,
5700,
5685,
5671,
5657,
5642,
5628,
5614,
5600,
5585,
5571,
5557,
5542,
5528,
5514,
5500,
5485,
5471,
5457,
5442,
5428,
5414,
5400,
5381,
5362,
5344,
5325,
5307,
5288,
5270,
5251,
5233,
5214,
5196,
5177,
5159,
5140,
5122,
5103,
5085,
5066,
5048,
5029,
5011,
4992,
4974,
4955,
4937,
4918,
4900,
4871,
4842,
4813,
4784,
4755,
4726,
4697,
4668,
4639,
4610,
4581,
4552,
4523,
4494,
4465,
4436,
4407,
4378,
4350,
4318,
4287,
4256,
4225,
4193,
4162,
4131,
4100,
4068,
4037,
4006,
3975,
3943,
3912,
3881,
3850,
3809,
3768,
3727,
3686,
3645,
3604,
3563,
3522,
3481,
3440,
3400,
3358,
3316,
3275,
3233,
3191,
3150,
3108,
3066,
3025,
2983,
2941,
2900,
2900,
2900,
2900,
2900,
2900,
2900,
2900,
2900,
2900,
2900,
2900,
2900,
2900,
2900,
2900,
2900,
2900,
2900,
2900,
2900,
2900,
2900,
2900,
2900,
2900,
2900,
2900
};
UData_t MT2266_TunerGain(Handle_t handle,
SData_t* pMeas)
{
UData_t status = MT_OK; /* Status to be returned */
U8Data rfAgc;
U8Data ifAgc;
PUserData userData;
/*
** ToDo: Add code here to return the gain / power level measured
** at the input to the demodulator.
*/
/*
** ToDo: Add code here to return the gain / power level measured
** at the input to the demodulator.
*/
userData = (PUserData)handle;
MT2060_Sleep(handle, 100);
status = Standard_getIfAgcGain (userData->demodulator, userData->chip, &rfAgc, &ifAgc);
if (status) goto exit;
*pMeas = IfGainTable[ifAgc];
exit:
return (status);
}
#endif
#endif
|
