mirror of
https://github.com/rtlsdrblog/rtl-sdr-blog.git
synced 2024-11-10 04:37:37 +01:00
add support for autoprobing the tuners
Signed-off-by: Steve Markgraf <steve@steve-m.de>
This commit is contained in:
Steve Markgraf
parent
c09fbb7c57
commit
ff79104824
@ -1,120 +1,15 @@
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#ifndef __TUNER_E4000_H
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#define __TUNER_E4000_H
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/**
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@file
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@brief E4000 tuner module declaration
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One can manipulate E4000 tuner through E4000 module.
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E4000 module is derived from tuner module.
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@par Example:
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@code
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// The example is the same as the tuner example in tuner_base.h except the listed lines.
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#include "tuner_e4000.h"
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...
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int main(void)
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{
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TUNER_MODULE *pTuner;
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E4000_EXTRA_MODULE *pTunerExtra;
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TUNER_MODULE TunerModuleMemory;
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BASE_INTERFACE_MODULE BaseInterfaceModuleMemory;
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// I2C_BRIDGE_MODULE I2cBridgeModuleMemory;
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unsigned long BandwidthMode;
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...
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// Build E4000 tuner module.
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BuildE4000Module(
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&pTuner,
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&TunerModuleMemory,
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&BaseInterfaceModuleMemory,
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&I2cBridgeModuleMemory,
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0xac, // I2C device address is 0xac in 8-bit format.
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CRYSTAL_FREQ_16384000HZ, // Crystal frequency is 16.384 MHz.
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E4000_AGC_INTERNAL // The E4000 AGC mode is internal AGC mode.
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);
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// Get E4000 tuner extra module.
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pTunerExtra = (T2266_EXTRA_MODULE *)(pTuner->pExtra);
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// ==== Initialize tuner and set its parameters =====
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...
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// Set E4000 bandwidth.
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pTunerExtra->SetBandwidthMode(pTuner, E4000_BANDWIDTH_6MHZ);
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// ==== Get tuner information =====
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...
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// Get E4000 bandwidth.
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pTunerExtra->GetBandwidthMode(pTuner, &BandwidthMode);
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// See the example for other tuner functions in tuner_base.h
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return 0;
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}
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@endcode
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*/
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//#include "tuner_base.h"
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// The following context is implemented for E4000 source code.
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// Definition (implemeted for E4000)
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#define E4000_1_SUCCESS 1
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#define E4000_1_FAIL 0
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#define E4000_I2C_SUCCESS 1
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#define E4000_I2C_FAIL 0
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#define E4K_I2C_ADDR 0xc8
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#define E4K_CHECK_ADDR 0x02
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#define E4K_CHECK_VAL 0x40
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// Function (implemeted for E4000)
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int
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@ -15,6 +15,10 @@ FC0013 module is derived from tuner module.
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**/
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#define FC0013_I2C_ADDR 0xc6
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#define FC0013_CHECK_ADDR 0x00
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#define FC0013_CHECK_VAL 0xa3
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// Definitions
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enum FC0013_TRUE_FALSE_STATUS
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{
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@ -44,7 +44,7 @@ int fc0013_init(void *dev) { return FC0013_Open(dev); }
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int fc0013_exit(void *dev) { return 0; }
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int fc0013_tune(void *dev, int freq) {
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/* read bandwidth mode to reapply it */
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int bw = 0;
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unsigned int bw = 6;
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//fc0013_GetBandwidthMode(dev, &bw); // FIXME: missing
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return FC0013_SetFrequency(dev, freq/1000, bw & 0xff);
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}
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@ -57,10 +57,9 @@ int fc0013_set_bw(void *dev, int bw) {
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}
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enum rtlsdr_tuners {
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RTLSDR_TUNER_UNDEF,
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RTLSDR_TUNER_E4000,
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RTLSDR_TUNER_FC0012,
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RTLSDR_TUNER_FC0013
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RTLSDR_TUNER_FC0013,
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};
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typedef struct rtlsdr_tuner {
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@ -161,6 +160,23 @@ int rtlsdr_write_array(rtlsdr_dev_t *dev, uint8_t block, uint16_t addr, uint8_t
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return r;
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}
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int rtlsdr_i2c_write_reg(rtlsdr_dev_t *dev, uint8_t i2c_addr, uint8_t data)
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{
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uint16_t addr = i2c_addr;
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return rtlsdr_write_array(dev, IICB, addr, &data, 1);
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}
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uint8_t rtlsdr_i2c_read_reg(rtlsdr_dev_t *dev, uint8_t i2c_addr, uint8_t reg)
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{
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uint16_t addr = i2c_addr;
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uint8_t data;
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rtlsdr_write_array(dev, IICB, addr, ®, 1);
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rtlsdr_read_array(dev, IICB, addr, &data, 1);
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return data;
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}
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int rtlsdr_i2c_write(rtlsdr_dev_t *dev, uint8_t i2c_addr, uint8_t *buffer, int len)
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{
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uint16_t addr = i2c_addr;
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@ -251,6 +267,27 @@ void rtlsdr_demod_write_reg(rtlsdr_dev_t *dev, uint8_t page, uint16_t addr, uint
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rtlsdr_demod_read_reg(dev, 0x0a, 0x01, 1);
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}
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void rtlsdr_set_gpio_bit(rtlsdr_dev_t *dev, uint8_t gpio, int val)
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{
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uint8_t r;
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gpio = 1 << gpio;
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r = rtlsdr_read_reg(dev, SYSB, GPO, 1);
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r = val ? (r | gpio) : (r & ~gpio);
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rtlsdr_write_reg(dev, SYSB, GPO, r, 1);
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}
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void rtlsdr_set_gpio_output(rtlsdr_dev_t *dev, uint8_t gpio)
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{
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int r;
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gpio = 1 << gpio;
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r = rtlsdr_read_reg(dev, SYSB, GPD, 1);
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rtlsdr_write_reg(dev, SYSB, GPO, r & ~gpio, 1);
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r = rtlsdr_read_reg(dev, SYSB, GPOE, 1);
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rtlsdr_write_reg(dev, SYSB, GPOE, r | gpio, 1);
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}
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void rtlsdr_set_i2c_repeater(rtlsdr_dev_t *dev, int on)
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{
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rtlsdr_demod_write_reg(dev, 1, 0x01, on ? 0x18 : 0x10, 1);
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@ -464,6 +501,15 @@ const char *rtlsdr_get_device_name(uint32_t index)
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return "";
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}
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/* TODO: put those defines in the tuner header once the drivers are added */
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#define FC0012_I2C_ADDR 0xc6
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#define FC0012_CHECK_ADDR 0x00
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#define FC0012_CHECK_VAL 0xa1
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#define FC2580_I2C_ADDR 0xac
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#define FC2580_CHECK_ADDR 0x01
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#define FC2580_CHECK_VAL 0x56
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rtlsdr_dev_t *rtlsdr_open(int index)
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{
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int r;
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@ -473,6 +519,7 @@ rtlsdr_dev_t *rtlsdr_open(int index)
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libusb_device *device = NULL;
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uint32_t device_count = 0;
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struct libusb_device_descriptor dd;
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uint8_t reg;
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dev = malloc(sizeof(rtlsdr_dev_t));
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memset(dev, 0, sizeof(rtlsdr_dev_t));
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@ -514,10 +561,49 @@ rtlsdr_dev_t *rtlsdr_open(int index)
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rtlsdr_init_baseband(dev);
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// TODO: probe the tuner and set dev->tuner member to appropriate tuner object
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// dev->tuner = &tuners[...];
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/* Probe tuners */
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rtlsdr_set_i2c_repeater(dev, 1);
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reg = rtlsdr_i2c_read_reg(dev, E4K_I2C_ADDR, E4K_CHECK_ADDR);
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if (reg == E4K_CHECK_VAL) {
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printf("Found Elonics E4000 tuner\n");
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dev->tuner = &tuners[RTLSDR_TUNER_E4000];
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goto found;
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}
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reg = rtlsdr_i2c_read_reg(dev, FC0013_I2C_ADDR, FC0013_CHECK_ADDR);
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if (reg == FC0013_CHECK_VAL) {
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printf("Found Fitipower FC0013 tuner\n");
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dev->tuner = &tuners[RTLSDR_TUNER_FC0013];
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goto found;
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}
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reg = rtlsdr_i2c_read_reg(dev, FC2580_I2C_ADDR, FC2580_CHECK_ADDR);
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if ((reg & 0x7f) == FC2580_CHECK_VAL) {
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printf("Found FCI 2580 tuner\n");
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//dev->tuner = &tuners[RTLSDR_TUNER_FC2580];
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// TODO: set GPIO5 low
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goto found;
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}
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/* initialise GPIOs (only needed for the FC0012 so far */
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rtlsdr_set_gpio_output(dev, 5);
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/* reset FC0012 before probing */
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rtlsdr_set_gpio_bit(dev, 5, 1);
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rtlsdr_set_gpio_bit(dev, 5, 0);
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reg = rtlsdr_i2c_read_reg(dev, FC0012_I2C_ADDR, FC0012_CHECK_ADDR);
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if (reg == FC0012_CHECK_VAL) {
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printf("Found Fitipower FC0012 tuner\n");
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dev->tuner = &tuners[RTLSDR_TUNER_FC0012];
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goto found;
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}
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found:
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rtlsdr_set_i2c_repeater(dev, 0);
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return dev;
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err:
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return NULL;
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}
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@ -18,9 +18,7 @@
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#define I2C_BUFFER_LEN 128
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#define YES 1
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#define NO 0
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#define CRYSTAL_FREQ 28800000
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#define E4K_I2C_ADDR 0xc8
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/* glue functions to rtl-sdr code */
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int
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@ -11,7 +11,6 @@
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#include "tuner_fc0013.h"
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#define CRYSTAL_FREQ 28800000
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#define FC0013_I2C_ADDR 0xc6
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/* glue functions to rtl-sdr code */
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int FC0013_Write(void *pTuner, unsigned char RegAddr, unsigned char Byte)
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