/*
Function: Set RF frequency (Unit: KHz)
Input:
fvalue -- RF frequency (Unit: KHz)
Output:
SUCCESS or FAILURE
*/
GX_STATE GX_Set_RFFrequency(unsigned long fvalue)
{
int UCtmp = FAILURE;
unsigned char data[5];
unsigned long freq;
freq=(fvalue+GX_IF_FREQUENCY)*10/625; /*freq=(fvalue+GX_IF_FREQUENCY)*/
data[0] = 0xc0; /*Tunner Address*/
data[1] =(unsigned char)((freq>>8)&0xff);
data[2] =(unsigned char)(freq&0xff);
data[3] = 0x86; /*62.5KHz*/
data[4] = 0x08;
if (SUCCESS == GX_Set_Tunner_Repeater_Enable(1)) /*open the chip repeater */
{
if (SUCCESS == GX_I2cReadWrite( WRITE, data[0],data[1],&data[2], 3 ))
{
GX_Delay_N_ms(50);
UCtmp = GX_Set_Tunner_Repeater_Enable(0); /*close the chip repeater*/
}
}
if (SUCCESS == UCtmp)
{
GX_Delay_N_ms(50);
UCtmp = GX_HotReset_CHIP();
}
return UCtmp;
}
GX_STATE GX_Set_RFFrequency(struct gx1001_state *state, unsigned long fvalue)
{
signed char UCtmp = FAILURE;
unsigned char data[6];
unsigned long freq;
freq=(fvalue+GX_IF_FREQUENCY)*10/625; /*freq=(fvalue+GX_IF_FREQUENCY)*/
data[0] = state->config.tuner_addr; /*Tunner Address*/
data[1] =(unsigned char)((freq>>8)&0xff);
data[2] =(unsigned char)(freq&0xff);
data[3] = 0X8b;//0xb3; /*62.5KHz*/ modified by jeffchang
if (fvalue < 153000)
data[4] = 0x01;
else if (fvalue < 430000)
data[4] = 0x06;
else
data[4] = 0x0c;
data[5] = 0xc3;
if (SUCCESS == GX_Set_Tunner_Repeater_Enable(state, 1)) /*open the chip repeater */
{
GX_Delay_N_10ms(1);
if (SUCCESS == Tuner_Writeregister(state, &data[1], 5))
{
GX_Delay_N_10ms(1);
UCtmp = GX_Set_Tunner_Repeater_Enable(state, 0); /*close the chip repeater*/
UCtmp = SUCCESS;
}
}
if (SUCCESS == UCtmp)
{
GX_Delay_N_10ms(5);
UCtmp = GX_HotReset_CHIP(state);
}
return UCtmp;
}
GX_STATE GX_Set_RFFrequency(unsigned long fvalue)
{
signed char UCtmp = FAILURE;
unsigned char data[6];
unsigned long freq;
freq=(fvalue+GX_IF_FREQUENCY)*10/625; /*freq=(fvalue+GX_IF_FREQUENCY)/Fref*/
data[0] = I2C_TUNER_ADDRESS; /*Tunner Address*/
data[1] =(unsigned char)((freq>>8)&0xff);
data[2] =(unsigned char)(freq&0xff);
data[3] = 0x8b; /*Fref=62.5KHz*/
if (fvalue < 153000)
data[4] = 0x60;
else if (fvalue < 430000)
data[4] = 0xa2;
else
data[4] = 0xaa;
data[5] = 0xc6;
if (SUCCESS == GX_Set_Tunner_Repeater_Enable(1)) /*open the chip repeater */
{
GX_Delay_N_10ms(1);
if (SUCCESS == Tuner_Writeregister(&data[1], 5 ))
{
GX_Delay_N_10ms(1);
UCtmp = GX_Set_Tunner_Repeater_Enable(0); /*close the chip repeater*/
UCtmp = SUCCESS;
}
}
if (SUCCESS == UCtmp)
{
GX_Delay_N_10ms(5);
UCtmp = GX_HotReset_CHIP();
}
return UCtmp;
}
