sforkowany z mirror/meshtastic-firmware
285 wiersze
9.2 KiB
C
285 wiersze
9.2 KiB
C
/*
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Copyright (c) 2014-2015 Arduino LLC. All right reserved.
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Copyright (c) 2016 Sandeep Mistry All right reserved.
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Copyright (c) 2018, Adafruit Industries (adafruit.com)
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _VARIANT_TTGO_EINK_V1_0_
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#define _VARIANT_TTGO_EINK_V1_0_
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/** Master clock frequency */
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#define VARIANT_MCK (64000000ul)
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#define USE_LFXO // Board uses 32khz crystal for LF
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/*
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@geeksville eink TODO:
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soonish:
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DONE hook cdc acm device to debug output
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DONE fix bootloader to use two buttons - remove bootloader hacks
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DONE get second button working in app load
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DONE use tp_ser_io as a button, it goes high when pressed unify eink display classes
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fix display width and height
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clean up eink drawing to not have the nasty timeout hack
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measure current draws
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DONE put eink to sleep when we think the screen is off
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enable gps sleep mode
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turn off txco on lora?
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make screen.adjustBrightness() a nop on eink screens
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later:
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enable flash on qspi.
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fix floating point SEGGER printf on nrf52 - see "new NMEA GPS pos"
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add factory/power on self test
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feedback to give:
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* bootloader is finished
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* the capacitive touch sensor works, though I'm not sure what use you are intending for it
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* remove ipx connector for nfc, instead use two caps and loop traces on the back of the board as an antenna?
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* the i2c RTC seems to talk fine on the i2c bus. However, I'm not sure of the utility of that part. Instead I'd be in favor of
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the following:
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* move BAT1 to power the GPS VBACKUP instead per page 6 of the Air530 datasheet. And remove the i2c RTC entirely.
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* remove the cp2014 chip.
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* I've made the serial flash chip work, but if you do a new spin of the board I recommend:
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connect pin 3 and pin 7 of U4 to spare GPIOs on the processor (instead of their current connections),
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This would allow using 4 bit wide interface mode to the serial flash - doubling the transfer speed! see example here:
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https://infocenter.nordicsemi.com/topic/ug_nrf52840_dk/UG/nrf52840_DK/hw_external_memory.html?cp=4_0_4_7_4
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Once again - I'm glad you added that external flash chip.
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* Power measurements
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When powered by 4V battery
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CPU on, lora radio RX mode, bluetooth enabled, GPS trying to lock. total draw 43mA
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CPU on, lora radio RX mode, bluetooth enabled, GPS super low power sleep mode. Total draw 20mA
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CPU on, lora radio TX mode, bluetooth enabled, GPS super low power sleep mode. Total draw 132mA
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Note: power consumption while connected via BLE to a phone almost identical.
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Note: eink display for all tests was in sleep mode most of the time. Current draw during the brief periods while the eink was being drawn was not
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measured (but it was low).
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Note: Turning off EINK PWR_ON produces no noticeable power savings over just putting the eink display into sleep mode.
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*/
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/*----------------------------------------------------------------------------
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* Headers
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*----------------------------------------------------------------------------*/
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#include "WVariant.h"
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#ifdef __cplusplus
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extern "C" {
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#endif // __cplusplus
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#define TTGO_T_ECHO
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// Number of pins defined in PinDescription array
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#define PINS_COUNT (48)
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#define NUM_DIGITAL_PINS (48)
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#define NUM_ANALOG_INPUTS (1)
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#define NUM_ANALOG_OUTPUTS (0)
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// LEDs
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#define PIN_LED1 (0 + 14) // 13 red (confirmed on 1.0 board)
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#define PIN_LED2 (0 + 15) // 14 blue
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#define PIN_LED3 (0 + 13) // 15 green
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#define LED_RED PIN_LED3
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#define LED_BLUE PIN_LED1
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#define LED_GREEN PIN_LED2
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#define LED_BUILTIN LED_BLUE
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#define LED_CONN PIN_GREEN
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#define LED_STATE_ON 0 // State when LED is lit
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#define LED_INVERTED 1
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/*
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* Buttons
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*/
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#define PIN_BUTTON1 (32 + 10)
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#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
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#define PIN_BUTTON_TOUCH (0 + 11) // 0.11 is the soft touch button on T-Echo
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/*
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* Analog pins
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*/
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#define PIN_A0 (4) // Battery ADC
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#define BATTERY_PIN PIN_A0
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static const uint8_t A0 = PIN_A0;
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#define ADC_RESOLUTION 14
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#define PIN_NFC1 (9)
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#define PIN_NFC2 (10)
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/*
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* Serial interfaces
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*/
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/*
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No longer populated on PCB
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*/
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//#define PIN_SERIAL2_RX (0 + 6)
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//#define PIN_SERIAL2_TX (0 + 8)
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// #define PIN_SERIAL2_EN (0 + 17)
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/**
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Wire Interfaces
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*/
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#define WIRE_INTERFACES_COUNT 1
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#define PIN_WIRE_SDA (26)
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#define PIN_WIRE_SCL (27)
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/* touch sensor, active high */
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#define TP_SER_IO (0 + 11)
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#define PIN_RTC_INT (0 + 16) // Interrupt from the PCF8563 RTC
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/*
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External serial flash WP25R1635FZUIL0
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*/
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// QSPI Pins
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#define PIN_QSPI_SCK (32 + 14)
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#define PIN_QSPI_CS (32 + 15)
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#define PIN_QSPI_IO0 (32 + 12) // MOSI if using two bit interface
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#define PIN_QSPI_IO1 (32 + 13) // MISO if using two bit interface
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#define PIN_QSPI_IO2 (0 + 7) // WP if using two bit interface (i.e. not used)
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#define PIN_QSPI_IO3 (0 + 5) // HOLD if using two bit interface (i.e. not used)
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// On-board QSPI Flash
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#define EXTERNAL_FLASH_DEVICES MX25R1635F
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#define EXTERNAL_FLASH_USE_QSPI
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/*
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* Lora radio
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*/
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#define USE_SX1262
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#define SX126X_CS (0 + 24) // FIXME - we really should define LORA_CS instead
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#define SX126X_DIO1 (0 + 20)
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// Note DIO2 is attached internally to the module to an analog switch for TX/RX switching
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#define SX1262_DIO3 \
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(0 + 21) // This is used as an *output* from the sx1262 and connected internally to power the tcxo, do not drive from the main
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// CPU?
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#define SX126X_BUSY (0 + 17)
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#define SX126X_RESET (0 + 25)
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#define SX126X_E22 // Not really an E22 but TTGO seems to be trying to clone that
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// Internally the TTGO module hooks the SX1262-DIO2 in to control the TX/RX switch (which is the default for the sx1262interface
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// code)
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// #define LORA_DISABLE_SENDING // Define this to disable transmission for testing (power testing etc...)
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// #undef SX126X_CS
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// #define USE_SIM_RADIO // define to not use the lora radio hardware at all
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/*
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* eink display pins
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*/
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#define PIN_EINK_EN (32 + 11) // Note: this is really just backlight power
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#define PIN_EINK_CS (0 + 30)
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#define PIN_EINK_BUSY (0 + 3)
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#define PIN_EINK_DC (0 + 28)
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#define PIN_EINK_RES (0 + 2)
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#define PIN_EINK_SCLK (0 + 31)
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#define PIN_EINK_MOSI (0 + 29) // also called SDI
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// Controls power for the eink display - Board power is enabled either by VBUS from USB or the CPU asserting PWR_ON
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// FIXME - I think this is actually just the board power enable - it enables power to the CPU also
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#define PIN_EINK_PWR_ON (0 + 12)
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#define HAS_EINK
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// No screen wipes on eink
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#define SCREEN_TRANSITION_MSECS 0
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#define PIN_SPI1_MISO \
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(32 + 7) // FIXME not really needed, but for now the SPI code requires something to be defined, pick an used GPIO
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#define PIN_SPI1_MOSI PIN_EINK_MOSI
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#define PIN_SPI1_SCK PIN_EINK_SCLK
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/*
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* Air530 GPS pins
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*/
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#define PIN_GPS_WAKE (32 + 2) // An output to wake GPS, low means allow sleep, high means force wake
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// Seems to be missing on this new board
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// #define PIN_GPS_PPS (32 + 4) // Pulse per second input from the GPS
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#define PIN_GPS_TX (32 + 9) // This is for bits going TOWARDS the CPU
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#define PIN_GPS_RX (32 + 8) // This is for bits going TOWARDS the GPS
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#define PIN_SERIAL1_RX PIN_GPS_TX
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#define PIN_SERIAL1_TX PIN_GPS_RX
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/*
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* SPI Interfaces
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*/
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#define SPI_INTERFACES_COUNT 2
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// For LORA, spi 0
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#define PIN_SPI_MISO (0 + 23)
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#define PIN_SPI_MOSI (0 + 22)
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#define PIN_SPI_SCK (0 + 19)
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#define PIN_PWR_EN (0 + 6)
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// To debug via the segger JLINK console rather than the CDC-ACM serial device
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// #define USE_SEGGER
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// Battery
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// The battery sense is hooked to pin A0 (4)
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// it is defined in the anlaolgue pin section of this file
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// and has 12 bit resolution
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#define BATTERY_SENSE_RESOLUTION_BITS 12
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#define BATTERY_SENSE_RESOLUTION 4096.0
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// Definition of milliVolt per LSB => 3.0V ADC range and 12-bit ADC resolution = 3000mV/4096
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#define VBAT_MV_PER_LSB (0.73242188F)
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// Voltage divider value => 100K + 100K voltage divider on VBAT = (100K / (100K + 100K))
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#define VBAT_DIVIDER (0.5F)
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// Compensation factor for the VBAT divider
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#define VBAT_DIVIDER_COMP (2.0)
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// Fixed calculation of milliVolt from compensation value
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#define REAL_VBAT_MV_PER_LSB (VBAT_DIVIDER_COMP * VBAT_MV_PER_LSB)
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#undef AREF_VOLTAGE
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#define AREF_VOLTAGE 3.0
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#define VBAT_AR_INTERNAL AR_INTERNAL_3_0
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#define ADC_MULTIPLIER VBAT_DIVIDER_COMP
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#define VBAT_RAW_TO_SCALED(x) (REAL_VBAT_MV_PER_LSB * x)
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#ifdef __cplusplus
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}
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#endif
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/*----------------------------------------------------------------------------
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* Arduino objects - C++ only
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*----------------------------------------------------------------------------*/
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#endif
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