Lora-net/sx1302_hal

Hardware pins

kahlenberg opened this issue · 5 comments

kahlenberg commented

Hi,
I have some questions regarding to Semtech SX1302CSSXXXGW1. I couldn't find any proper palce to ask my questions, sorry for inconviences.

In the schematics, there are some pins to control the radio chips. If only SPI communication is used, where to connect those pins?
For example, there is a signal POWER_EN. To which pin of Raspberry must it be connected when using SPI?
In the https://github.com/Lora-net/sx1302_hal/blob/master/tools/reset_lgw.sh#L16 there is a define SX1302_POWER_EN_PIN=18, but I am not sure if it is the same signal with POWER_EN, because in the schematics, POWER_EN signal enables the power of SKY66420 chip, not SX1302.

Where to connect those pins: SX1302GPIO8, SX1261_DIO1, SX1261_BUSY?

SX1261_NRESET is clear in the script:
https://github.com/Lora-net/sx1302_hal/blob/master/tools/reset_lgw.sh#L17

SX1261_NSS is also clear:
https://github.com/Lora-net/sx1302_hal/blob/master/packet_forwarder/global_conf.json.sx1250.EU868#L14

Thanks.

nilesh-dryad commented

POWER_EN is connected to PIN 12 of raspberry pi header.
SX1261_BUSY is connected on PIN 7 of the raspberry pi header.

kahlenberg commented

Thanks for answer.
That means, POWER_EN in schematics is SX1302_POWER_EN_PIN in script?
PIN12 is GPIO18 on the RPi Header. SX1302_POWER_EN_PIN actually means GPIO number not the PIN number. Some weird naming here. And it also activates the power for SKY chip, not SX1302.

Where can I find all and full information?
Thanks.

  • 👍1
nilesh-dryad commented

Sorry for late Answer. It is PIN number on raspberry pi header. Not the GPIO number,

smtc-bot commented

Thank you for your inquiry.

Customers are encouraged to submit technical questions via our dedicated support portal at https://semtech.force.com/ldp/ldp_support.

We invite all users to visit the LoRa Developer Portal Forum at https://forum.lora-developers.semtech.com and to join the thriving LoRa development community!

techsd commented

Thanks for answer. That means, POWER_EN in schematics is SX1302_POWER_EN_PIN in script? PIN12 is GPIO18 on the RPi Header. SX1302_POWER_EN_PIN actually means GPIO number not the PIN number. Some weird naming here. And it also activates the power for SKY chip, not SX1302.

Where can I find all and full information? Thanks.

i have problem with SPI and reset_lgw.sh