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: source/libs/Contiki_STM32_Library/spirit1-config.h

Revision:
45:2d01cc9bc761
Parent:
44:aedd63cb0ce3
Child:
67:93bec0baf1de
diff -r aedd63cb0ce3 -r 2d01cc9bc761 source/libs/Contiki_STM32_Library/spirit1-config.h
--- a/source/libs/Contiki_STM32_Library/spirit1-config.h	Fri Dec 16 13:46:02 2016 +0100
+++ b/source/libs/Contiki_STM32_Library/spirit1-config.h	Mon Dec 19 12:42:40 2016 +0100
@@ -43,22 +43,19 @@
 /*---------------------------------------------------------------------------*/
 
 /* Sometimes Spirit1 seems to NOT deliver (correctly) the 'IRQ_RX_DATA_READY'
- * event.
+ * event for packets which have a length which is close to a multiple of
+ * RX FIFO size. Furthermore, in these cases also the content delivery seems
+ * to be compromised as well as the generation of RX/TX FIFO errors.
  * This can be avoided by reducing the maximum packet length to a value which
  * is lower than the RX FIFO size.
- * The mbed driver currently implements another workaround to this which allows
- * stable packet delivery of packets with maximum length up to 128 bytes
- * (which is the recommended 6LoWPAN payload length).
+ *
  * Enable beyond macro if you want to use the version of the driver which avoids
  * FIFO overflows by reducing packet length.
  *
  * NOTE: the non delivery of event 'IRQ_RX_DATA_READY' MUST still be
  *       investigated further deeply (both on HW & SW level)!
- *       Furthermore, the current limit of 128 bytes should also be overcome,
- *       which again requires a further analysis of the RX process, which
- *       currently seems to run into RX FIFO (most likely) overflow situations.
  */
-// #define RX_FIFO_THR_WA
+#define RX_FIFO_THR_WA
 
 /**    
  * The MAX_PACKET_LEN is an arbitrary value used to define the two array
@@ -69,7 +66,7 @@
 #ifdef RX_FIFO_THR_WA
 #define MAX_PACKET_LEN              (SPIRIT_MAX_FIFO_LEN-1)
 #else
-#define MAX_PACKET_LEN              (128) // betzw - WAS: SPIRIT_MAX_FIFO_LEN, but LEN_WIDTH is set to 7 so the variable payload length is theoretically from 0 to 255 bytes
+#define MAX_PACKET_LEN              (255) // betzw - WAS: SPIRIT_MAX_FIFO_LEN, but LEN_WIDTH is set to 7 so the variable payload length is theoretically from 0 to 255 bytes
 #endif
 
 /*---------------------------------------------------------------------------*/