ST / stm-spirit1-rf-driver

Prototype RF driver for STM Sub-1 GHz RF expansion board based on the SPSGRF-868 module for STM32 Nucleo.

Prototype RF Driver for STM Sub-1 GHz RF Expansion Boards based on the SPSGRF-868 and SPSGRF-915 Modules for STM32 Nucleo

Currently supported boards:

Note, in order to use expansion board X-NUCLEO-IDS01A4 in mbed you need to perform the following HW modifications on the board:

  • Unmount resistor R4
  • Mount resistor R7

Furthermore, on some Nucleo development boards (e.g. the NUCLEO_F429ZI), in order to be able to use Ethernet together with these Sub-1 GHz RF expansion boards, you need to compile this driver with macro SPIRIT1_SPI_MOSI=PB_5 defined, while the development board typically requires some HW modification as e.g. described here!

This driver can be used together with the 6LoWPAN stack (a.k.a. Nanostack).

Diff: mbed_driver_api.cpp

Revision:
24:03e351bfc9c9
Parent:
23:4192649f35da
Child:
25:2ec45788f28c
--- a/mbed_driver_api.cpp	Wed Nov 09 14:02:18 2016 +0100
+++ b/mbed_driver_api.cpp	Thu Nov 10 15:25:59 2016 +0100
@@ -33,7 +33,6 @@
 };
 static phy_device_driver_s device_driver;
 static int8_t rf_radio_driver_id = -1;
-static uint8_t rf_rnd_rssi = 0;
 
 const phy_rf_channel_configuration_s phy_subghz = {868000000, 1000000, 250000, 11, M_GFSK};
 
@@ -602,7 +601,11 @@
     /* TODO - betzw: what to do? */
     // rf_buffer_len -= 2;
 
-    /* Send received data and link information to the network stack */
+#ifdef HEAVY_TRACING
+      	tr_debug("%s (%d)", __func__, __LINE__);
+#endif
+
+        	/* Send received data and link information to the network stack */
     if( device_driver.phy_rx_cb ){
         device_driver.phy_rx_cb(rf_rx_buf, rf_buffer_len, rf_lqi, rf_rssi, rf_radio_driver_id);
     }
@@ -856,8 +859,14 @@
  */
 extern "C" int8_t rf_read_random(void)
 {
-	tr_debug("%s (%d)", __func__, __LINE__);
-    return rf_rnd_rssi;
+	float tmp;
+
+	rf_device->channel_clear();
+	tmp = rf_device->get_last_rssi_dbm();
+	tmp *= -10;
+
+	tr_debug("%s (%d): ret=%d", __func__, __LINE__, (uint8_t)tmp);
+    return (uint8_t)tmp;
 }
 
 /*