Radio example

sdk/bsp/radio.c

@@ -28,7 +28,7 @@ signed short cdr_tau_history[11] = {0};
 
 //=========================== definition ======================================
 
-// #define DIV_ON
+#define DIV_ON
 
 #define MAXLENGTH_TRX_BUFFER 128  // 1B length, 125B data, 2B CRC
 #define NUM_CHANNELS 16

sdk/bsp/scm3c_hw_interface.c

@@ -1056,6 +1056,9 @@ void initialize_mote() {
     radio_init_tx();
 #endif
 
+    // activate divider
+    radio_init_divider(2000);
+
     // Set initial IF ADC clock frequency
     set_IF_clock_frequency(scm3c_hw_interface_vars.IF_coarse,
                            scm3c_hw_interface_vars.IF_fine, 0);

sdk/samples/radio_example_rx/main.c

@@ -7,19 +7,44 @@
 #include "radio.h"
 #include "rftimer.h"
 #include "scm3c_hw_interface.h"
+#include "scum.h"
 
-// Number of for loop cycles between Hello World messages.
-// 700000 for loop cycles roughly correspond to 1 second.
-#define NUM_CYCLES_BETWEEN_TX (1000000UL)
+static uint8_t packet[125] = {0};
+static uint8_t packet_len = 125;
+static int8_t rxpk_rssi = 0;
+static uint8_t rxpk_lqi = 0;
+
+static void rx_endframe_callback(uint32_t timestamp);
 
 int main(void) {
 
-    LC_FREQCHANGE(0,0,0);
-    radio_txEnable();
+    printf("Radio Receiver Example\n");
+
+    radio_init();
+    LC_FREQCHANGE(0,20,15);
+    radio_setEndFrameRxCb(rx_endframe_callback);
+    radio_rxEnable();
+    radio_rxNow();
 
-    uint32_t g_tx_counter = 0;
     while (1) {
-        printf("Hello World! %lu\n", g_tx_counter++);
-        busy_wait_cycles(NUM_CYCLES_BETWEEN_TX);
+        __WFE();
+    }
+}
+
+void rx_endframe_callback(uint32_t timestamp) {
+
+    radio_getReceivedFrame(     &(packet[0]), 
+                                &packet_len,
+                                sizeof(packet), 
+                                &rxpk_rssi,
+                                &rxpk_lqi      );
+
+    for (uint8_t i = 0; i < packet_len - 2; i++) {
+        printf("%d ", packet[i]);
     }
+    printf("\n");
+
+    radio_rxEnable();
+    radio_rxNow();
+
 }

sdk/samples/radio_example_tx/main.c

@@ -7,18 +7,20 @@
 #include "radio.h"
 #include "rftimer.h"
 #include "scm3c_hw_interface.h"
+#include "scum.h"
 
 // Number of for loop cycles between Hello World messages.
 // 700000 for loop cycles roughly correspond to 1 second.
 #define NUM_CYCLES_BETWEEN_TX (1000000UL)
-#define NUM_CYCLES_BETWEEN_PACKET (100UL)
+#define NUM_CYCLES_BETWEEN_PACKET (1000UL)
 #define TX_PACKET_LEN (64UL)
 
-void tx_endframe_callback(uint32_t timestamp);
-
-uint8_t packet[TX_PACKET_LEN] = {0};
+static void tx_endframe_callback(uint32_t timestamp);
+static uint8_t packet[TX_PACKET_LEN] = {0};
 
 int main(void) {
+
+    printf("Radio Transmitter Example\n");
     radio_init();
     LC_FREQCHANGE(0,0,0);
     radio_setEndFrameTxCb(tx_endframe_callback);
@@ -27,10 +29,8 @@ int main(void) {
     busy_wait_cycles(NUM_CYCLES_BETWEEN_PACKET);
     radio_txNow();
 
-    uint32_t g_tx_counter = 0;
     while (1) {
-        printf("Hello World! %lu\n", g_tx_counter++);
-        busy_wait_cycles(NUM_CYCLES_BETWEEN_TX);
+        __WFE();
     }
 }