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Merge branch 'sgpio_rx_samples_signed' of https://github.com/jboone/hackrf into jboone-sgpio_rx_samples_signed

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This commit is contained in:
Dominic Spill
2016-01-16 10:37:43 +00:00
parent eec30d817b 83d79be584
commit 75dfc5c2cb
1 changed files with 9 additions and 17 deletions
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26
firmware/sgpio-rx/sgpio-rx.c
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@ -26,9 +26,6 @@
#include <tuning.h> #include <tuning.h>
void tx_test() { void tx_test() {
sgpio_set_slice_mode(&sgpio_config, false);
sgpio_configure(&sgpio_config, TRANSCEIVER_MODE_TX);
// LSB goes out first, samples are 0x<Q1><I1><Q0><I0> // LSB goes out first, samples are 0x<Q1><I1><Q0><I0>
volatile uint32_t buffer[] = { volatile uint32_t buffer[] = {
0xda808080, 0xda808080,
@ -38,6 +35,7 @@ void tx_test() {
}; };
uint32_t i = 0; uint32_t i = 0;
rf_path_set_direction(RF_PATH_DIRECTION_TX);
sgpio_cpld_stream_enable(&sgpio_config); sgpio_cpld_stream_enable(&sgpio_config);
while(true) { while(true) {
@ -48,14 +46,12 @@ void tx_test() {
} }
void rx_test() { void rx_test() {
sgpio_set_slice_mode(&sgpio_config, false);
sgpio_configure(&sgpio_config, TRANSCEIVER_MODE_RX);
volatile uint32_t buffer[4096]; volatile uint32_t buffer[4096];
uint32_t i = 0; uint32_t i = 0;
int16_t magsq; uint32_t magsq;
int8_t sigi, sigq; int8_t sigi, sigq;
rf_path_set_direction(RF_PATH_DIRECTION_RX);
sgpio_cpld_stream_enable(&sgpio_config); sgpio_cpld_stream_enable(&sgpio_config);
led_on(LED2); led_on(LED2);
@ -66,16 +62,12 @@ void rx_test() {
buffer[i & 4095] = SGPIO_REG_SS(SGPIO_SLICE_A); buffer[i & 4095] = SGPIO_REG_SS(SGPIO_SLICE_A);
/* find the magnitude squared */ /* find the magnitude squared */
sigi = (buffer[i & 4095] & 0xff) - 0x80; sigi = buffer[i & 4095] & 0xff;
sigq = ((buffer[i & 4095] >> 8) & 0xff) - 0x80; sigq = (buffer[i & 4095] >> 8) & 0xff;
magsq = sigi * sigq; magsq = sigi * sigi + sigq * sigq;
if ((uint16_t)magsq & 0x8000) {
magsq ^= 0xffff;
magsq++;
}
/* illuminate LED3 only when magsq exceeds threshold */ /* illuminate LED3 only when magsq exceeds threshold */
if (magsq > 0x3c00) if (magsq > 0x1000)
led_on(LED3); led_on(LED3);
else else
led_off(LED3); led_off(LED3);
@ -85,8 +77,9 @@ void rx_test() {
int main(void) { int main(void) {
const uint64_t freq = 2700000000U; const uint64_t freq = 2441000000U;
sgpio_set_slice_mode(false);
pin_setup(); pin_setup();
enable_1v8_power(); enable_1v8_power();
#ifdef HACKRF_ONE #ifdef HACKRF_ONE
@ -94,7 +87,6 @@ int main(void) {
#endif #endif
cpu_clock_init(); cpu_clock_init();
rf_path_init(&rf_path); rf_path_init(&rf_path);
rf_path_set_direction(&rf_path, RF_PATH_DIRECTION_RX);
set_freq(freq); set_freq(freq);