/*
Copyright (c) 2014-2015 Arduino LLC. All right reserved.
Copyright (c) 2016 Sandeep Mistry All right reserved.
Copyright (c) 2018, Adafruit Industries (adafruit.com)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _VARIANT_TTGO_EINK_V1_0_
#define _VARIANT_TTGO_EINK_V1_0_
/** Master clock frequency */
#define VARIANT_MCK (64000000ul)
#define USE_LFXO // Board uses 32khz crystal for LF
/*----------------------------------------------------------------------------
* Headers
*----------------------------------------------------------------------------*/
#include "WVariant.h"
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
#define TTGO_T_ECHO
// Number of pins defined in PinDescription array
#define PINS_COUNT (48)
#define NUM_DIGITAL_PINS (48)
#define NUM_ANALOG_INPUTS (1)
#define NUM_ANALOG_OUTPUTS (0)
// LEDs
#define PIN_LED1 (0 + 14) // 13 red (confirmed on 1.0 board)
// Unused(by firmware) LEDs:
#define PIN_LED2 (0 + 15) // 14 blue
#define PIN_LED3 (0 + 13) // 15 green
#define LED_RED PIN_LED3
#define LED_BLUE PIN_LED1
#define LED_GREEN PIN_LED2
#define LED_BUILTIN LED_BLUE
#define LED_CONN PIN_GREEN
#define LED_STATE_ON 0 // State when LED is lit
/*
* Buttons
*/
#define PIN_BUTTON1 (32 + 10)
#define PIN_BUTTON2 (0 + 18) // 0.18 is labeled on the board as RESET but we configure it in the bootloader as a regular GPIO
#define PIN_BUTTON_TOUCH (0 + 11) // 0.11 is the soft touch button on T-Echo
#define BUTTON_CLICK_MS 400
#define BUTTON_TOUCH_MS 200
/*
* Analog pins
*/
#define PIN_A0 (4) // Battery ADC
#define BATTERY_PIN PIN_A0
static const uint8_t A0 = PIN_A0;
#define ADC_RESOLUTION 14
#define PIN_NFC1 (9)
#define PIN_NFC2 (10)
/*
* Serial interfaces
*/
/*
No longer populated on PCB
*/
// #define PIN_SERIAL2_RX (0 + 6)
// #define PIN_SERIAL2_TX (0 + 8)
// #define PIN_SERIAL2_EN (0 + 17)
/**
Wire Interfaces
*/
#define WIRE_INTERFACES_COUNT 1
#define PIN_WIRE_SDA (26)
#define PIN_WIRE_SCL (27)
/* touch sensor, active high */
#define TP_SER_IO (0 + 11)
#define PIN_RTC_INT (0 + 16) // Interrupt from the PCF8563 RTC
/*
External serial flash WP25R1635FZUIL0
*/
// QSPI Pins
#define PIN_QSPI_SCK (32 + 14)
#define PIN_QSPI_CS (32 + 15)
#define PIN_QSPI_IO0 (32 + 12) // MOSI if using two bit interface
#define PIN_QSPI_IO1 (32 + 13) // MISO if using two bit interface
#define PIN_QSPI_IO2 (0 + 7) // WP if using two bit interface (i.e. not used)
#define PIN_QSPI_IO3 (0 + 5) // HOLD if using two bit interface (i.e. not used)
// On-board QSPI Flash
#define EXTERNAL_FLASH_DEVICES MX25R1635F
#define EXTERNAL_FLASH_USE_QSPI
/*
* Lora radio
*/
#define USE_SX1262
#define USE_SX1268
#define SX126X_CS (0 + 24) // FIXME - we really should define LORA_CS instead
#define SX126X_DIO1 (0 + 20)
// Note DIO2 is attached internally to the module to an analog switch for TX/RX switching
#define SX1262_DIO3 \
(0 + 21) // This is used as an *output* from the sx1262 and connected internally to power the tcxo, do not drive from the main
// CPU?
#define SX126X_BUSY (0 + 17)
#define SX126X_RESET (0 + 25)
// Not really an E22 but TTGO seems to be trying to clone that
#define SX126X_DIO2_AS_RF_SWITCH
#define SX126X_DIO3_TCXO_VOLTAGE 1.8
// Internally the TTGO module hooks the SX1262-DIO2 in to control the TX/RX switch (which is the default for the sx1262interface
// code)
// #define LORA_DISABLE_SENDING // Define this to disable transmission for testing (power testing etc...)
// #undef SX126X_CS
/*
* eink display pins
*/
#define PIN_EINK_EN (32 + 11) // Note: this is really just backlight power
#define PIN_EINK_CS (0 + 30)
#define PIN_EINK_BUSY (0 + 3)
#define PIN_EINK_DC (0 + 28)
#define PIN_EINK_RES (0 + 2)
#define PIN_EINK_SCLK (0 + 31)
#define PIN_EINK_MOSI (0 + 29) // also called SDI
// Controls power for all peripherals (eink + GPS + LoRa + Sensor)
#define PIN_POWER_EN (0 + 12)
// #define PIN_POWER_EN1 (0 + 13)
#define USE_EINK
#define PIN_SPI1_MISO \
(32 + 7) // FIXME not really needed, but for now the SPI code requires something to be defined, pick an used GPIO
#define PIN_SPI1_MOSI PIN_EINK_MOSI
#define PIN_SPI1_SCK PIN_EINK_SCLK
/*
* GPS pins
*/
#define GPS_L76K
#define PIN_GPS_REINIT (32 + 5) // An output to reset L76K GPS. As per datasheet, low for > 100ms will reset the L76K
#define PIN_GPS_STANDBY (32 + 2) // An output to wake GPS, low means allow sleep, high means force wake
// Seems to be missing on this new board
// #define PIN_GPS_PPS (32 + 4) // Pulse per second input from the GPS
#define GPS_TX_PIN (32 + 9) // This is for bits going TOWARDS the CPU
#define GPS_RX_PIN (32 + 8) // This is for bits going TOWARDS the GPS
#define GPS_THREAD_INTERVAL 50
#define PIN_SERIAL1_RX GPS_TX_PIN
#define PIN_SERIAL1_TX GPS_RX_PIN
// PCF8563 RTC Module
#define PCF8563_RTC 0x51
/*
* SPI Interfaces
*/
#define SPI_INTERFACES_COUNT 2
// For LORA, spi 0
#define PIN_SPI_MISO (0 + 23)
#define PIN_SPI_MOSI (0 + 22)
#define PIN_SPI_SCK (0 + 19)
#define PIN_PWR_EN (0 + 6)
// To debug via the segger JLINK console rather than the CDC-ACM serial device
// #define USE_SEGGER
// Battery
// The battery sense is hooked to pin A0 (4)
// it is defined in the anlaolgue pin section of this file
// and has 12 bit resolution
#define BATTERY_SENSE_RESOLUTION_BITS 12
#define BATTERY_SENSE_RESOLUTION 4096.0
#undef AREF_VOLTAGE
#define AREF_VOLTAGE 3.0
#define VBAT_AR_INTERNAL AR_INTERNAL_3_0
#define ADC_MULTIPLIER (2.0F)
#define HAS_RTC 1
#ifdef __cplusplus
}
#endif
/*----------------------------------------------------------------------------
* Arduino objects - C++ only
*----------------------------------------------------------------------------*/
#endif