| | |
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| | | uint8_t plllockdetect = EC_CTRL_PLLLCK; |
|---|
| | | uint16_t otp_addr = 0; |
|---|
| | | uint32_t ldo_tune = 0; |
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| | | |
|---|
| | | u8 iderror_count = 0; |
|---|
| | | dw1000local.dblbuffon = 0; // Double buffer mode off by default |
|---|
| | | dw1000local.prfIndex = 0; // 16MHz |
|---|
| | | dw1000local.cdata.aatset = 0; // Auto ACK bit not set |
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| | |
|---|
| | | while (DWT_DEVICE_ID != dw1000local.deviceID) // MP IC ONLY (i.e. DW1000) FOR THIS CODE |
|---|
| | | { |
|---|
| | | dw1000local.deviceID = dwt_readdevid() ; |
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| | | if(iderror_count++>10) |
|---|
| | | { |
|---|
| | | break; |
|---|
| | | } |
|---|
| | | |
|---|
| | | } |
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| | | |
|---|
| | | _dwt_enableclocks(FORCE_SYS_XTI); // NOTE: set system clock to XTI - this is necessary to make sure the values read by _dwt_otpread are reliable |
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| | |
|---|
| | | //diagnostics->debug2 = dwt_read32bitoffsetreg(0x27, 0xc); |
|---|
| | | |
|---|
| | | } |
|---|
| | | #define B20_SIGN_EXTEND_TEST (0x00100000UL) |
|---|
| | | #define B20_SIGN_EXTEND_MASK (0xFFF00000UL) |
|---|
| | | /* offset from DRX_CONF_ID in bytes to 21-bit signed RX carrier integrator value */ |
|---|
| | | #define DRX_CARRIER_INT_OFFSET 0x28 |
|---|
| | | #define DRX_CARRIER_INT_LEN (3) |
|---|
| | | #define DRX_CARRIER_INT_MASK 0x001FFFFF |
|---|
| | | int32_t dwt_readcarrierintegrator(void) |
|---|
| | | { |
|---|
| | | uint32_t regval = 0 ; |
|---|
| | | int j ; |
|---|
| | | uint8_t buffer[DRX_CARRIER_INT_LEN] ; |
|---|
| | | |
|---|
| | | /* Read 3 bytes into buffer (21-bit quantity) */ |
|---|
| | | |
|---|
| | | dwt_readfromdevice(DRX_CONF_ID,DRX_CARRIER_INT_OFFSET,DRX_CARRIER_INT_LEN, buffer) ; |
|---|
| | | |
|---|
| | | for (j = 2 ; j >= 0 ; j --) // arrange the three bytes into an unsigned integer value |
|---|
| | | { |
|---|
| | | regval = (regval << 8) + buffer[j] ; |
|---|
| | | } |
|---|
| | | |
|---|
| | | if (regval & B20_SIGN_EXTEND_TEST) regval |= B20_SIGN_EXTEND_MASK ; // sign extend bit #20 to whole word |
|---|
| | | else regval &= DRX_CARRIER_INT_MASK ; // make sure upper bits are clear if not sign extending |
|---|
| | | |
|---|
| | | return (int32_t) regval ; // cast unsigned value to signed quantity. |
|---|
| | | } |
|---|
| | | /*! ------------------------------------------------------------------------------------------------------------------ |
|---|
| | | * @fn dwt_readtxtimestamp() |
|---|
| | | * |
|---|
