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add comments on the bladerf interface

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git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7516 818b1a75-f10b-46b9-bf7c-635c3b92a50f
This commit is contained in:
Navid Nikaein
2015-06-02 11:24:12 +00:00
parent 82c971a0c3
commit b8a2ec9ddd
1 changed files with 7 additions and 2 deletions
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targets/ARCH/BLADERF/USERSPACE/LIB/bladerf_lib.c
+6 -1
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@@ -193,7 +193,7 @@ int openair0_device_init(openair0_device *device, openair0_config_t *openair0_cf
num_buffers = 16; num_buffers = 16;
buffer_size = openair0_cfg[card]. samples_per_packet*sizeof(int32_t); // buffer size = 4096 for sample_len of 1024 buffer_size = openair0_cfg[card]. samples_per_packet*sizeof(int32_t); // buffer size = 4096 for sample_len of 1024
num_transfers = 8; // ? device->openair0_cfg.samples_per_packets num_transfers = 8; // ? device->openair0_cfg.samples_per_packets
timeout_ms = 1; timeout_ms = 1; // or 0/
printf("the buffer_size is set to %d\n", buffer_size); printf("the buffer_size is set to %d\n", buffer_size);
@@ -204,18 +204,23 @@ if ((status=bladerf_open(&dev, "")) != 0 ) {
printf("[BRF] device speed is %d\n",bladerf_device_speed(dev) ); printf("[BRF] device speed is %d\n",bladerf_device_speed(dev) );
// RX // RX
// Example of CLI output: RX Frequency: 2539999999Hz
if ((status=bladerf_set_frequency(dev, BLADERF_MODULE_RX, openair0_cfg[card].rx_freq[0])) != 0){ if ((status=bladerf_set_frequency(dev, BLADERF_MODULE_RX, openair0_cfg[card].rx_freq[0])) != 0){
fprintf(stderr,"Failed to set RX frequency: %s\n",bladerf_strerror(status)); fprintf(stderr,"Failed to set RX frequency: %s\n",bladerf_strerror(status));
brf_error(status); brf_error(status);
} }
// RX sample rate: 7680000 0/1
if ((status=bladerf_set_sample_rate(dev, BLADERF_MODULE_RX, openair0_cfg[card].sample_rate, NULL)) != 0){ if ((status=bladerf_set_sample_rate(dev, BLADERF_MODULE_RX, openair0_cfg[card].sample_rate, NULL)) != 0){
fprintf(stderr,"Failed to set RX sample rate: %s\n", bladerf_strerror(status)); fprintf(stderr,"Failed to set RX sample rate: %s\n", bladerf_strerror(status));
brf_error(status); brf_error(status);
} }
// RX Bandwidth: 14000000Hz
if ((status=bladerf_set_bandwidth(dev, BLADERF_MODULE_RX, openair0_cfg[card].rx_bw, NULL)) != 0){ if ((status=bladerf_set_bandwidth(dev, BLADERF_MODULE_RX, openair0_cfg[card].rx_bw, NULL)) != 0){
fprintf(stderr,"Failed to set RX bandwidth: %s\n", bladerf_strerror(status)); fprintf(stderr,"Failed to set RX bandwidth: %s\n", bladerf_strerror(status));
brf_error(status); brf_error(status);
} }
// desired gain = 16
if ((status=bladerf_set_gain(dev, BLADERF_MODULE_RX, openair0_cfg[card].rx_gain[0])) != 0) { if ((status=bladerf_set_gain(dev, BLADERF_MODULE_RX, openair0_cfg[card].rx_gain[0])) != 0) {
fprintf(stderr,"Failed to set RX gain: %s\n",bladerf_strerror(status)); fprintf(stderr,"Failed to set RX gain: %s\n",bladerf_strerror(status));
brf_error(status); brf_error(status);