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| /******************************************************************************* | ||
| * | ||
| * File: teensylc.h | ||
| * | ||
| * Function: Board Support File for Teensy LC with external SPI LoRa module. | ||
| * | ||
| * Copyright: Copyright (c) 2021 Leonel Lopes Parente | ||
| * | ||
| * License: MIT License. See accompanying LICENSE file. | ||
| * | ||
| * Author: Leonel Lopes Parente | ||
| * | ||
| * Description: This board has onboard USB (provided by the MCU). | ||
| * It supports automatic firmware upload and serial over USB. | ||
| * No onboard display. Optionally an external display con be connected. | ||
| * | ||
| * Onboard LED and SPI SCK use the same GPIO (13) which causes a hardware conflict. | ||
| * Fortunately SCK can be remapped to a different GPIO (14). | ||
| * | ||
| * Connect an optional display according to below connection details. | ||
| * | ||
| * CONNECTIONS AND PIN DEFINITIONS: | ||
| * | ||
| * Indentifiers between parentheses are defined in the board's | ||
| * Board Support Package (BSP) which is part of the Arduino core. | ||
| * | ||
| * Leds GPIO | ||
| * ---- ---- | ||
| * LED <――――――――――> 13 (LED_BUILTIN) (SCK) Hardware conflict. | ||
| * Cannot use LED_BUILTIN and SCK together. | ||
| * | ||
| * I2C [display] GPIO | ||
| * --- ---- | ||
| * SDA <――――――――――> 18 (SDA) | ||
| * SCL <――――――――――> 19 (SCL) | ||
| * | ||
| * SPI/LoRa module GPIO | ||
| * --- ---- | ||
| * MOSI <――――――――――> 11 (MOSI) | ||
| * MISO <――――――――――> 12 (MISO) | ||
| * SCK <――――――――――> 14 NOT SCK! | ||
| * SPI SCK is remapped to GPIO14 because | ||
| * SCK definition conflicts with onboard LED. | ||
| * NSS <――――――――――> 10 | ||
| * RST <――――――――――> 9 | ||
| * DIO0 <――――――――――> 8 | ||
| * DIO1 <――――――――――> 7 | ||
| * DIO2 - Not needed for LoRa. | ||
| * | ||
| * Docs: https://docs.platformio.org/en/latest/boards/teensy/teensylc.html | ||
| * | ||
| * Identifiers: LMIC-node | ||
| * board: teensylc | ||
| * PlatformIO | ||
| * board: teensylc | ||
| * platform: teensy | ||
| * Arduino | ||
| * board: ARDUINO_TEENSYLC | ||
| * architecture: <not defined> | ||
| * | ||
| ******************************************************************************/ | ||
|
|
||
| #pragma once | ||
|
|
||
| #ifndef TEENSYLC_H_ | ||
| #define TEENSYLC_H_ | ||
|
|
||
| #include "LMIC-node.h" | ||
| #include <SPI.h> | ||
|
|
||
| #define DEVICEID_DEFAULT "teensylc" // Default deviceid value | ||
|
|
||
| // Wait for Serial | ||
| // Can be useful for boards with MCU with integrated USB support. | ||
| #define WAITFOR_SERIAL_SECONDS_DEFAULT 10 // -1 waits indefinitely | ||
|
|
||
| // LMIC Clock Error | ||
| // This is only needed for slower 8-bit MCUs (e.g. 8MHz ATmega328 and ATmega32u4). | ||
| // Value is defined in parts per million (of MAX_CLOCK_ERROR). | ||
| // #define LMIC_CLOCK_ERROR_PPM 0 | ||
|
|
||
| // Pin mappings for LoRa tranceiver | ||
| const lmic_pinmap lmic_pins = { | ||
| .nss = 10, | ||
| .rxtx = LMIC_UNUSED_PIN, | ||
| .rst = 9, | ||
| .dio = { /*dio0*/ 8, /*dio1*/ 7, /*dio2*/ LMIC_UNUSED_PIN } | ||
| #ifdef MCCI_LMIC | ||
| , | ||
| .rxtx_rx_active = 0, | ||
| .rssi_cal = 10, | ||
| .spi_freq = 8000000 /* 8 MHz */ | ||
| #endif | ||
| }; | ||
|
|
||
| #ifdef USE_SERIAL | ||
| usb_serial_class& serial = Serial; | ||
| #endif | ||
|
|
||
| #ifdef USE_LED | ||
| EasyLed led(LED_BUILTIN, EasyLed::ActiveLevel::High); | ||
| #endif | ||
|
|
||
| #ifdef USE_DISPLAY | ||
| // Create U8x8 instance for SSD1306 OLED display (no reset) using hardware I2C. | ||
| U8X8_SSD1306_128X64_NONAME_HW_I2C display(/*rst*/ U8X8_PIN_NONE, /*scl*/ SCL, /*sda*/ SDA); | ||
| #endif | ||
|
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||
|
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| bool boardInit(InitType initType) | ||
| { | ||
| // This function is used to perform board specific initializations. | ||
| // Required as part of standard template. | ||
|
|
||
| // InitType::Hardware Must be called at start of setup() before anything else. | ||
| // InitType::PostInitSerial Must be called after initSerial() before other initializations. | ||
|
|
||
| bool success = true; | ||
| switch (initType) | ||
| { | ||
| case InitType::Hardware: | ||
| // Note: Serial port and display are not yet initialized and cannot be used use here. | ||
| // SPI SCK needs to remapped to GPIO14 because it conflicts with LED_BUILTIN. | ||
| SPI.setSCK(14); | ||
| break; | ||
|
|
||
| case InitType::PostInitSerial: | ||
| // Note: If enabled Serial port and display are already initialized here. | ||
| // No actions required for this board. | ||
| break; | ||
| } | ||
| return success; | ||
| } | ||
|
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|
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| #endif // TEENSYLC_H_ |