wiki:loraloc_hal-4.0.1
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wiki:loraloc_hal-4.0.1 [2017/08/28 11:26] bdu [Prerequisites] |
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| - | ====== iBTS Semtech HALv2 v4.0.1 - Instructions ====== | ||
| - | ===== Compilation ===== | ||
| - | |||
| - | ==== Prerequisites ==== | ||
| - | |||
| - | Required packages / tools to build the HALv2: | ||
| - | |||
| - | * ''build-essential'' | ||
| - | * ''tar'' | ||
| - | * ''opkg-build'' (which can be downloaded from https://git.yoctoproject.org/cgit/cgit.cgi/opkg-utils/plain/opkg-build) | ||
| - | |||
| - | Please ensure that these files are in your ''$PATH''. | ||
| - | |||
| - | ==== Compilation ==== | ||
| - | |||
| - | To compile the HALv2, please use following commands: | ||
| - | |||
| - | <code bash> | ||
| - | tar xzf libloragw2-4.0.1-klk3.tar.gz | ||
| - | cd lora_gateway_v2_4.0.1-klk3 | ||
| - | source /opt/toolchains/lpbs/environment-setup-cortexa9hf-neon-poky-linux-gnueabi | ||
| - | ./configure --host=arm-poky-linux-gnueabi --prefix=/user/libloragw2 | ||
| - | </code> | ||
| - | |||
| - | This should show something similar to: | ||
| - | |||
| - | <code> | ||
| - | checking for... | ||
| - | ... | ||
| - | configure: creating ./config.status | ||
| - | config.status: creating ... | ||
| - | config.status: executing depfiles commands | ||
| - | </code> | ||
| - | |||
| - | Please ensure that you don't have errors. Then you can compile the tools: | ||
| - | |||
| - | <code bash> | ||
| - | make | ||
| - | make ipk # this is optional and generates the ipk required to upgrade the FPGA to v58 | ||
| - | </code> | ||
| - | |||
| - | ===== Usage ===== | ||
| - | |||
| - | The main modification in tools since HALv1 is the '-d' argument. | ||
| - | |||
| - | As this HAL is mainly designed to handle multiple RF chips, this optional argument allows to specify which spidevice to use. | ||
| - | |||
| - | Kerlink provides a automatic discovery script at startup to handle correctly plugged boards. | ||
| - | |||
| - | By default, if a WAN module is provided, loraloc modules are mapped from slot 2. | ||
| - | |||
| - | So to use tools with this Loraloc module, please specify on tool's command-line ''-d /dev/slot/2/spidev0''. | ||
| - | |||
| - | For example: | ||
| - | <code bash> | ||
| - | ./pkt_logger -d /dev/slot/2/spidev0 | ||
| - | </code> | ||
| - | |||
| - | ===== Configuration ===== | ||
| - | |||
| - | Due to architecture, the configuration is quite more complex than HAL v1: | ||
| - | * **board** keyword means "Loraloc board" or "LoraLoc module" (one "board" by slot) | ||
| - | * each board includes 2 **chip** configs (i.e. sx1301 configs) | ||
| - | * each board includes 2 **rfchain** configs | ||
| - | |||
| - | ==== Chip config ==== | ||
| - | |||
| - | This configuration must include SX1301 channel config. | ||
| - | |||
| - | These channels can be configured through ''sx1301ar_conf_chan'' function. | ||
| - | |||
| - | Please note that this function takes as "channel number" the concatenation of chip number and channel. (see function description in ''sx1301ar_hal.h'') | ||
| - | |||
| - | ==== RF Chain config ==== | ||
| - | |||
| - | This configuration is mainly used to correct RSSI and TX power values. | ||
| - | |||
| - | Corresponding calibration values are set in Production by Kerlink and extracted during board startup in ''/tmp/calib_loraloc.json'' file. | ||
| - | |||
| - | Thanks to ad9361 transceiver chip. We are able to get +-0.25 dBm precision on real TX power. | ||
| - | |||
| - | As a consequence, up to 32 power steps (''tx_lut'') are generated and calibrated in production. | ||
| - | |||
| - | ==== JSON Config ==== | ||
| - | |||
| - | The JSON configuration file has been improved to simplify software by using JSON tables. | ||
| - | |||
| - | Indeed: | ||
| - | * The main Radio config object ''SX1301_array_conf'' is now a table to support multiple boards | ||
| - | * ''rf_chain_conf'' is also a 2-objects-sized table | ||
| - | * ''SX1301_conf'' is a 2-objects-sized table | ||
| - | * ''tx_lut'' is a variable table (up to 32 objects) | ||
wiki/loraloc_hal-4.0.1.1503912362.txt.gz · Last modified: 2019/01/17 10:01 (external edit)
