mirror of
https://github.com/rtlsdrblog/rtl-sdr-blog.git
synced 2025-01-27 02:14:55 +01:00
add argument check for device handle
also outputs all text to stderr implement rate and frequency read functions
This commit is contained in:
Dimitri Stolnikov
parent
31cb96fc3c
commit
2f20f6fe9e
@ -113,6 +113,8 @@ int main(int argc, char **argv)
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r = rtlsdr_set_center_freq(dev, frequency);
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if (r < 0)
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fprintf(stderr, "WARNING: Failed to set center freq.\n");
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else
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fprintf(stderr, "Tuned to %i Hz.\n", frequency);
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file = fopen(filename, "wb");
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@ -96,9 +96,11 @@ rtlsdr_device_t devices[] = {
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typedef struct {
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struct libusb_device_handle *devh;
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rtlsdr_tuner_t *tuner;
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int rate; /* Hz */
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} rtlsdr_dev_t;
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#define CRYSTAL_FREQ 28800000
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#define MAX_SAMP_RATE 3200000
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#define CTRL_IN (LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_IN)
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#define CTRL_OUT (LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_OUT)
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@ -167,7 +169,7 @@ int rtlsdr_i2c_write_reg(rtlsdr_dev_t *dev, uint8_t i2c_addr, uint8_t reg, uint8
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data[0] = reg;
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data[1] = val;
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return rtlsdr_write_array(dev, IICB, addr, &data, 2);
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return rtlsdr_write_array(dev, IICB, addr, (uint8_t *)&data, 2);
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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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@ -184,12 +186,20 @@ uint8_t rtlsdr_i2c_read_reg(rtlsdr_dev_t *dev, uint8_t i2c_addr, uint8_t reg)
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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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if (!dev)
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return -1;
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return rtlsdr_write_array(dev, IICB, addr, buffer, len);
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}
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int rtlsdr_i2c_read(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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if (!dev)
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return -1;
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return rtlsdr_read_array(dev, IICB, addr, buffer, len);
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}
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@ -203,7 +213,7 @@ uint16_t rtlsdr_read_reg(rtlsdr_dev_t *dev, uint8_t block, uint16_t addr, uint8_
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r = libusb_control_transfer(dev->devh, CTRL_IN, 0, addr, index, data, len, 0);
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if (r < 0)
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printf("%s failed\n", __FUNCTION__);
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fprintf(stderr, "%s failed\n", __FUNCTION__);
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reg = (data[1] << 8) | data[0];
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@ -227,7 +237,7 @@ void rtlsdr_write_reg(rtlsdr_dev_t *dev, uint8_t block, uint16_t addr, uint16_t
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r = libusb_control_transfer(dev->devh, CTRL_OUT, 0, addr, index, data, len, 0);
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if (r < 0)
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printf("%s failed\n", __FUNCTION__);
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fprintf(stderr, "%s failed\n", __FUNCTION__);
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}
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uint16_t rtlsdr_demod_read_reg(rtlsdr_dev_t *dev, uint8_t page, uint8_t addr, uint8_t len)
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@ -242,7 +252,7 @@ uint16_t rtlsdr_demod_read_reg(rtlsdr_dev_t *dev, uint8_t page, uint8_t addr, ui
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r = libusb_control_transfer(dev->devh, CTRL_IN, 0, addr, index, data, len, 0);
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if (r < 0)
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printf("%s failed\n", __FUNCTION__);
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fprintf(stderr, "%s failed\n", __FUNCTION__);
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reg = (data[1] << 8) | data[0];
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@ -266,7 +276,7 @@ void rtlsdr_demod_write_reg(rtlsdr_dev_t *dev, uint8_t page, uint16_t addr, uint
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r = libusb_control_transfer(dev->devh, CTRL_OUT, 0, addr, index, data, len, 0);
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if (r < 0)
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printf("%s failed\n", __FUNCTION__);
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fprintf(stderr, "%s failed\n", __FUNCTION__);
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rtlsdr_demod_read_reg(dev, 0x0a, 0x01, 1);
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}
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@ -353,7 +363,9 @@ void rtlsdr_init_baseband(rtlsdr_dev_t *dev)
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int rtlsdr_set_center_freq(rtlsdr_dev_t *dev, uint32_t freq)
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{
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if (!dev->tuner)
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int r;
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if (!dev || !dev->tuner)
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return -1;
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rtlsdr_set_i2c_repeater(dev, 1);
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@ -361,22 +373,26 @@ int rtlsdr_set_center_freq(rtlsdr_dev_t *dev, uint32_t freq)
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dev->tuner->freq = freq;
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double f = (double) freq;
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f *= 1.0 + dev->tuner->corr / 1e6;
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dev->tuner->tune((void *)dev, (int) f);
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printf("Tuned to %i Hz\n", freq);
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r = dev->tuner->tune((void *)dev, (int) f);
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rtlsdr_set_i2c_repeater(dev, 0);
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return 0;
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return r;
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}
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int rtlsdr_get_center_freq(rtlsdr_dev_t *dev)
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{
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return 0; // TODO: implement
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if (!dev || !dev->tuner)
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return -1;
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return dev->tuner->freq;
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}
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int rtlsdr_set_freq_correction(rtlsdr_dev_t *dev, int32_t ppm)
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{
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if (!dev->tuner)
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int r;
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if (!dev || !dev->tuner)
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return -1;
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if (dev->tuner->corr == ppm)
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@ -385,47 +401,57 @@ int rtlsdr_set_freq_correction(rtlsdr_dev_t *dev, int32_t ppm)
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dev->tuner->corr = ppm;
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/* retune to apply new correction value */
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rtlsdr_set_center_freq(dev, dev->tuner->freq);
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r = rtlsdr_set_center_freq(dev, dev->tuner->freq);
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return 0;
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return r;
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}
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int32_t rtlsdr_get_freq_correction(rtlsdr_dev_t *dev)
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{
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if (!dev->tuner)
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if (!dev || !dev->tuner)
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return -1;
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return dev->tuner->corr;
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}
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void rtlsdr_set_sample_rate(rtlsdr_dev_t *dev, uint32_t samp_rate)
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int rtlsdr_set_sample_rate(rtlsdr_dev_t *dev, uint32_t samp_rate)
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{
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uint16_t tmp;
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uint32_t rsamp_ratio;
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double real_rate;
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if (!dev)
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return -1;
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/* check for the maximum rate the resampler supports */
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if (samp_rate > 3200000)
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samp_rate = 3200000;
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if (samp_rate > MAX_SAMP_RATE)
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samp_rate = MAX_SAMP_RATE;
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rsamp_ratio = (CRYSTAL_FREQ * pow(2, 22)) / samp_rate;
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rsamp_ratio &= ~3;
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real_rate = (CRYSTAL_FREQ * pow(2, 22)) / rsamp_ratio;
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printf("Setting sample rate: %.3f Hz\n", real_rate);
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fprintf(stderr, "Setting sample rate: %.3f Hz\n", real_rate);
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if (dev->tuner)
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dev->tuner->set_bw((void *)dev, real_rate);
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dev->rate = samp_rate;
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tmp = (rsamp_ratio >> 16);
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rtlsdr_demod_write_reg(dev, 1, 0x9f, tmp, 2);
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tmp = rsamp_ratio & 0xffff;
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rtlsdr_demod_write_reg(dev, 1, 0xa1, tmp, 2);
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return 0;
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}
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int rtlsdr_get_sample_rate(rtlsdr_dev_t *dev)
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{
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return 0; // TODO: implement
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if (!dev)
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return -1;
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return dev->rate;
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}
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int rtlsdr_init(void)
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@ -570,21 +596,21 @@ rtlsdr_dev_t *rtlsdr_open(int index)
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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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fprintf(stderr, "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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fprintf(stderr, "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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fprintf(stderr, "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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@ -599,24 +625,26 @@ rtlsdr_dev_t *rtlsdr_open(int index)
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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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fprintf(stderr, "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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if (dev->tuner)
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dev->tuner->init(dev);
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r =dev->tuner->init(dev);
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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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int rtlsdr_close(rtlsdr_dev_t *dev)
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{
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if (!dev)
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return -1;
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libusb_release_interface(dev->devh, 0);
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libusb_close(dev->devh);
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free(dev);
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@ -626,6 +654,9 @@ int rtlsdr_close(rtlsdr_dev_t *dev)
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int rtlsdr_reset_buffer(rtlsdr_dev_t *dev)
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{
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if (!dev)
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return -1;
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rtlsdr_write_reg(dev, USBB, USB_EPA_CTL, 0x1002, 2);
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rtlsdr_write_reg(dev, USBB, USB_EPA_CTL, 0x0000, 2);
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@ -634,6 +665,9 @@ int rtlsdr_reset_buffer(rtlsdr_dev_t *dev)
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int rtlsdr_read_sync(rtlsdr_dev_t *dev, void *buf, int len, int *n_read)
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{
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if (!dev)
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return -1;
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return libusb_bulk_transfer(dev->devh, 0x81, buf, len, n_read, 3000);
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}
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#if 0
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