Differences

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--- fpga_phy_zigbee [2017/12/06 16:11] – [Check results] ooubejja
+++ fpga_phy_zigbee [2017/12/13 12:05] – [Transmitter] ooubejja
@@ Line 1: / Line 1: @@
  --- //[[othmane.oubejja@inria.fr|Othmane Oubejja]] 2017/11/30 17:33//
-! UNDER CONSTRUCTION !
 {{ :under-128.png?100 |}}
@@ Line 9: / Line 8: @@
-In this tutorial we will focus on the PHY layer exclusively and, in order to encode/decode packets, we will use a custom and (very) light MAC frame structure using [[https://en.wikipedia.org/wiki/Intel_HEX|Intel HEX]] data format, **which has nothing to do with the native 802.15.4 MAC Frame Structure !**
+In this tutorial we will focus on the PHY layer exclusively and, in order to encode/decode packets, we will use a (very) light MAC frame structure using [[https://en.wikipedia.org/wiki/Intel_HEX|Intel HEX]] data format. (//which has nothing to do with the native 802.15.4 MAC Frame Structure !//)
 ==== What's new here ? ====
@@ Line 56: / Line 55: @@
   * ATTENTION : **Channel** parameter has to be set to **__3__** as in the previous image. That's the only channel that allows access to the custom design.
- * **Radio420x**
-  * Set CR1 value to 0 to enable the transmitter
  * **Custom Register** (CR 1 & 4)
@@ Line 64: / Line 60: @@
   * Set CR1 value to 0 to enable the transmitter
   * Set CR4 value to 0 to disable MIMO synchronization
+ * **Radio420 **
+  * The Radio420x is a Multimode SDR [[https://en.wikipedia.org/wiki/FPGA_Mezzanine_Card|FMC]] RF transceiver. PicoSDR 2x2 contains 2 Radio420M modules which are MIMO capable //(M for MIMO, pretty smart, huh ?)//. It is mandatory to initialize BOTH radio cards, even if only 1 is used. So, since our device contains 2 Radio420M transceivers, it means we will have 2 ''Radio420 TX'' blocks and 2 ''Radio420 RX'' blocks. Here is a [[https://www.nutaq.com/sites/default/files/Radio420x_V1.3_03_24_2014_web.pdf|product sheet]] for more info.
+  * To be short, add 2 ''Radio420 TX'' blocks and 2 ''Radio420 RX'' blocks
+  * Now, we only need one transmitter per node, so make sure to enable only the Radio420 TX of Card 1, and set the gain values as following :
+{{ :radio420.png?250 |}}
+  * For the 3 remaining ''Radio420'' blocks, we only need to disable them by setting the __Enable__ parameter to __False__
 //If you don't get this part, have a look [[from_gnuradio_to_cortxlab_pico|here]].//
-There isn't that much done in here since all baseband processing is done by the FPGA. All that is left is to connect a ''**File Source**'' block to the ''**RTDEx Sink**'' block, and specify the absolute path to your ".hex" file in ''**File Source**'' block parameters :
+There isn't that much left in here since all baseband processing is done by the FPGA. All you have to do now is to connect a ''**File Source**'' block to the ''**RTDEx Sink**'' block, and specify the absolute path to your ".hex" file in ''**File Source**'' block parameters :
 {{ :filesource.png?400 |}}
-The final flow-graph should look like this :
+The final flow-graph of your transmitter should look like this :
 {{ :ieee802154_tx_pico.grc.png?400 |}}
@@ Line 149: / Line 155: @@
 <code>
 ...
-├── pico_zigbee.task
 ├── pico_zigbee
 │   ├── frame_fpga.hex
@@ Line 158: / Line 163: @@
 │   ├── scenario.yaml
 │   ├── pico_tx802154_sx315.bit
 ...
 </code>
@@ Line 218: / Line 222: @@
 │   │   │   │   ├── scenario.yaml~
 │   │   │   │   ├── pico_tx802154_sx315.bit
-impact_instr.txt
+│   │   │   │   ├── impact_instr.txt
-frame_fpga.hex
+│   │   │   │   ├── frame_fpga.hex
-_impactbatch.log
+│   │   │   │   ├── _impactbatch.log
-stderr.txt
+│   │   │   │   ├── stderr.txt
-__stdout.txt__
+│   │   │   │   ├── stdout.txt
 ...