.. _ronoth_lodev: Ronoth LoDev ############ ======== Overview ======== The Ronoth_ LoDev_ is a small open source board containing a `AcSIP S76S`_ SiP from AcSIP_. The `full LoDev design details`_ are available on GitHub. The LoDev_ board can be purchased from Ronoth_ or from CrowdSupply_. The S76S contains an STMicro STM32L073RZ MCU, a `Semtech SX1276`_ LoRaWAN transceiver, and a +20 dBm power amplifier. Refer to `AcSIP S76S Product Information Brief`_ for details. Zephyr applications may use the **ronoth_lodev** configuration to run on this board. .. figure:: img/lodev.jpg :align: center :alt: Image of Ronoth LoDev open source development board containing S76S system on a chip Ronoth LoDev `Board design files`_ are available on GitHub. ================ Device Resources ================ The embedded STMicro STM32L073RZ has some GPIOs and SPI2 internally committed to the LoRaWAN transceiver operation. See `internally dedicated ports`_ for a list of resources committed to this function. ========= Debugging ========= Programming and debugging uses the SWD port, as on any STM32 processor. An ST-LINK/V2 adapter may be used with the appropriate software (*st-utils* package on Linux). ================= Connector Pin-Out ================= The LoDev has two rows of headers. Pin 1 on both connectors is closest to the micro-USB connector on the board, furthest from the RF (antenna) connector. When viewed from the top (component) side of the board, with the micro-USB connector closest and RF (antenna) connector furthest away, the CN6_ connector is on the left, the CN7_ connector is on the right. UART1 on the S76S SiP is connected to a USB-to-UART device connected to the micro USB connector, so generally PA9 and PA10 are unavailable for I/Os. A helpful silkscreen legend is provided on the board. .. figure:: img/pinout.jpg :align: center :alt: Ronoth LoDev sketch with pinout Ronth LoDev Pinout .. _CN6: ----------- CN6 Pin-Out ----------- === ======== ====================================================== Pin Function Note === ======== ====================================================== 1 3.3V Output 500 mA max 2 GND 3 PC1 4 PC0 5 PB8 6 BOOT0 7 PB7 8 PB6 9 PB5 10 PD2 11 PC12 12 PC11 13 PC10 14 PA14 SWCLK 15 PA13 SWDIO 16 PA12 17 PA11 18 PA9 USB serial Tx drives this pin (input) for UART1 19 PA10 USB serial Rx is driven by this pin (output) for UART1 20 PA8 === ======== ====================================================== .. _CN7: ----------- CN7 Pin-Out ----------- === ======== ============================ Pin Function Note === ======== ============================ 1 PC2 2 PC3 3 nRESET 4 PA0 5 PA2 6 PA3 7 PA4 8 PA5 9 PA6 10 PA7 11 PC4 12 PC5 13 PB0 14 PB1 15 PC6 16 PC7 17 PC8 18 PC9 19 GND 20 PA1 Used in S76S as “RF FEM CPS” === ======== ============================ .. _internally dedicated ports: -------------------------- Internally Dedicated Ports -------------------------- ======== ======== ============= ==== ========================= Pin name Pin Type I/O Structure Note Function ======== ======== ============= ==== ========================= PA15 I/O FT - INTERNAL SX1276 D5 PB3 I/O FTf - INTERNAL SX1276 D4 PB4 I/O FTf - INTERNAL SX1276 D3 PB9 I/O FTf - INTERNAL SX1276 D2 PB10 I/O FT - INTERNAL SX1276 Reset PB11 I/O FT - INTERNAL SX1276 D0 PB12 I/O FT - INTERNAL SX1276 SPI nCS PB13 I/O FTf - INTERNAL SX1276 SPI2_SCK PB14 I/O FTf - INTERNAL SX1276 SPI2_MISO PB15 I/O FT - INTERNAL SX1276 SPI2_MOSI PC13 I/O FT - INTERNAL SX1276 D1 ======== ======== ============= ==== ========================= ========== References ========== .. _Ronoth: https://ronoth.com/ .. _LoDev: https://ronoth.com/products/lodev-s76s-lora-soc-development-board?variant=31608819417220 .. _AcSIP: http://www.acsip.com.tw .. _AcSIP S76S: http://www.acsip.com.tw/index.php?action=products-detail&fid1=11&fid2=29&fid3=27&id=79&lang=3 .. _AcSIP S76S Product Information Brief: https://www.acsip.com.tw/index.php?action=download_pro&perm=d&id=365 .. _CrowdSupply: https://www.crowdsupply.com/ronoth/lodev .. _full LoDev design details: https://github.com/ronoth/LoDev .. _Board design files: https://github.com/ronoth/LoDev .. _posted on MBed by Steve Osborn: https://os.mbed.com/users/steve918/ .. _Semtech SX1276: https://www.semtech.com/products/wireless-rf/lora-transceivers/sx1276 ======= License ======= This document Copyright (c) 2021 Dean Weiten SPDX-License-Identifier: Apache-2.0