void A7105_SetPower(int power)
{
/*
Power amp is ~+16dBm so:
TXPOWER_100uW = -23dBm == PAC=0 TBG=0
TXPOWER_300uW = -20dBm == PAC=0 TBG=1
TXPOWER_1mW = -16dBm == PAC=0 TBG=2
TXPOWER_3mW = -11dBm == PAC=0 TBG=4
TXPOWER_10mW = -6dBm == PAC=1 TBG=5
TXPOWER_30mW = 0dBm == PAC=2 TBG=7
TXPOWER_100mW = 1dBm == PAC=3 TBG=7
TXPOWER_150mW = 1dBm == PAC=3 TBG=7
*/
u8 pac, tbg;
switch(power) {
case 0: pac = 0; tbg = 0; break;
case 1: pac = 0; tbg = 1; break;
case 2: pac = 0; tbg = 2; break;
case 3: pac = 0; tbg = 4; break;
case 4: pac = 1; tbg = 5; break;
case 5: pac = 2; tbg = 7; break;
case 6: pac = 3; tbg = 7; break;
case 7: pac = 3; tbg = 7; break;
default: pac = 0; tbg = 0; break;
}
A7105_WriteReg(0x28, (pac << 3) | tbg);
}
// fine tune A7105 LO base frequency
// this is required for some A7105 modules / Rx
// with inaccurate crystal oscillator
// arg: offset in +/-kHz
void A7105_AdjustLOBaseFreq(s16 offset)
{
// LO base frequency = 32e6*(bip+(bfp/(2^16)))
u8 bip; // LO base frequency integer part
u32 bfp; // LO base frequency fractional part
if(offset < 0) {
bip = 0x4a; // 2368 MHz
bfp = 0xffff+((offset*2048)/1000)+1;
}
else {
bip = 0x4b; // 2400 MHz (default)
bfp = (offset*2048)/1000;
}
if(offset == 0)
bfp = 0x0002; // as per datasheet, not sure why recommanded, but that's a +1kHz drift only ...
A7105_WriteReg( A7105_11_PLL_III, bip);
A7105_WriteReg( A7105_12_PLL_IV, (bfp >> 8) & 0xff);
A7105_WriteReg( A7105_13_PLL_V, bfp & 0xff);
}
int A7105_Reset()
{
A7105_WriteReg(0x00, 0x00);
usleep(1000);
//Set both GPIO as output and low
A7105_SetTxRxMode(TXRX_OFF);
int result = A7105_ReadReg(0x10) == 0x9E;
A7105_Strobe(A7105_STANDBY);
return result;
}
void A7105_WriteData(u8 *dpbuffer, u8 len, u8 channel)
{
int i;
CS_LO();
PROTOSPI_xfer(A7105_RST_WRPTR);
PROTOSPI_xfer(0x05);
for (i = 0; i < len; i++)
PROTOSPI_xfer(dpbuffer[i]);
CS_HI();
A7105_WriteReg(0x0F, channel);
CS_LO();
PROTOSPI_xfer(A7105_TX);
CS_HI();
}
void A7105_WriteData(u8 *dpbuffer, u8 len, u8 channel)
{
int i;
CS_LO();
spi_xfer(SPI2, A7105_RST_WRPTR);
spi_xfer(SPI2, 0x05);
for (i = 0; i < len; i++)
spi_xfer(SPI2, dpbuffer[i]);
CS_HI();
A7105_WriteReg(0x0F, channel);
CS_LO();
spi_xfer(SPI2, A7105_TX);
CS_HI();
}
/*
* 1 - Tx else Rx
*/
void A7105_SetTxRxMode(enum TXRX_State mode)
{
if(mode == TX_EN) {
A7105_WriteReg(A7105_0B_GPIO1_PIN1, 0x33);
A7105_WriteReg(A7105_0C_GPIO2_PIN_II, 0x31);
} else if (mode == RX_EN) {
A7105_WriteReg(A7105_0B_GPIO1_PIN1, 0x31);
A7105_WriteReg(A7105_0C_GPIO2_PIN_II, 0x33);
} else {
//The A7105 seems to some with a cross-wired power-amp (A7700)
//On the XL7105-D03, TX_EN -> RXSW and RX_EN -> TXSW
//This means that sleep mode is wired as RX_EN = 1 and TX_EN = 1
//If there are other amps in use, we'll need to fix this
A7105_WriteReg(A7105_0B_GPIO1_PIN1, 0x33);
A7105_WriteReg(A7105_0C_GPIO2_PIN_II, 0x33);
}
}
static int hubsan_init()
{
u8 if_calibration1;
u8 vco_calibration0;
u8 vco_calibration1;
//u8 vco_current;
A7105_WriteID(0x55201041);
A7105_WriteReg(A7105_01_MODE_CONTROL, 0x63);
A7105_WriteReg(A7105_03_FIFOI, 0x0f);
A7105_WriteReg(A7105_0D_CLOCK, 0x05);
A7105_WriteReg(A7105_0E_DATA_RATE, 0x04);
A7105_WriteReg(A7105_15_TX_II, 0x2b);
A7105_WriteReg(A7105_18_RX, 0x62);
A7105_WriteReg(A7105_19_RX_GAIN_I, 0x80);
A7105_WriteReg(A7105_1C_RX_GAIN_IV, 0x0A);
A7105_WriteReg(A7105_1F_CODE_I, 0x07);
A7105_WriteReg(A7105_20_CODE_II, 0x17);
A7105_WriteReg(A7105_29_RX_DEM_TEST_I, 0x47);
A7105_Strobe(A7105_STANDBY);
//IF Filter Bank Calibration
A7105_WriteReg(0x02, 1);
//vco_current =
A7105_ReadReg(0x02);
u32 ms = CLOCK_getms();
CLOCK_ResetWatchdog();
while(CLOCK_getms() - ms < 500) {
if(! A7105_ReadReg(0x02))
break;
}
if (CLOCK_getms() - ms >= 500) {
DEBUG_MSG("calibration failed");
return 0;
}
if_calibration1 = A7105_ReadReg(A7105_22_IF_CALIB_I);
A7105_ReadReg(A7105_24_VCO_CURCAL);
if(if_calibration1 & A7105_MASK_FBCF) {
//Calibration failed...what do we do?
return 0;
}
//VCO Current Calibration
//A7105_WriteReg(0x24, 0x13); //Recomended calibration from A7105 Datasheet
//VCO Bank Calibration
//A7105_WriteReg(0x26, 0x3b); //Recomended limits from A7105 Datasheet
//VCO Bank Calibrate channel 0?
//Set Channel
A7105_WriteReg(A7105_0F_CHANNEL, 0);
//VCO Calibration
A7105_WriteReg(0x02, 2);
ms = CLOCK_getms();
CLOCK_ResetWatchdog();
while(CLOCK_getms() - ms < 500) {
if(! A7105_ReadReg(0x02))
break;
}
if (CLOCK_getms() - ms >= 500) {
return 0;
}
vco_calibration0 = A7105_ReadReg(A7105_25_VCO_SBCAL_I);
if (vco_calibration0 & A7105_MASK_VBCF) {
//Calibration failed...what do we do?
return 0;
}
//Calibrate channel 0xa0?
//Set Channel
A7105_WriteReg(A7105_0F_CHANNEL, 0xa0);
//VCO Calibration
A7105_WriteReg(A7105_02_CALC, 2);
ms = CLOCK_getms();
CLOCK_ResetWatchdog();
while(CLOCK_getms() - ms < 500) {
if(! A7105_ReadReg(A7105_02_CALC))
break;
}
if (CLOCK_getms() - ms >= 500)
return 0;
vco_calibration1 = A7105_ReadReg(A7105_25_VCO_SBCAL_I);
if (vco_calibration1 & A7105_MASK_VBCF) {
//Calibration failed...what do we do?
}
//Reset VCO Band calibration
//A7105_WriteReg(0x25, 0x08);
A7105_SetTxRxMode(TX_EN);
A7105_SetPower(Model.tx_power);
A7105_Strobe(A7105_STANDBY);
return 1;
}
void A7105_Reset()
{
A7105_WriteReg(0x00, 0x00);
}
