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- /**
- * Marlin 3D Printer Firmware
- *
- * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
- * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
- */
- #pragma once
-
- /**
- * HAL_LPC1768/HAL.h
- * Hardware Abstraction Layer for NXP LPC1768
- */
-
- #define CPU_32_BIT
- #define HAL_INIT
-
- void HAL_init();
-
- #include <stdint.h>
- #include <stdarg.h>
- #include <algorithm>
-
- extern "C" volatile millis_t _millis;
-
- #include <Arduino.h>
- #include <pinmapping.h>
- #include <CDCSerial.h>
-
- #include "../shared/math_32bit.h"
- #include "../shared/HAL_SPI.h"
- #include "fastio.h"
- #include <adc.h>
- #include "watchdog.h"
- #include "HAL_timers.h"
- #include "MarlinSerial.h"
-
- //
- // Default graphical display delays
- //
- #ifndef ST7920_DELAY_1
- #define ST7920_DELAY_1 DELAY_NS(600)
- #endif
- #ifndef ST7920_DELAY_2
- #define ST7920_DELAY_2 DELAY_NS(750)
- #endif
- #ifndef ST7920_DELAY_3
- #define ST7920_DELAY_3 DELAY_NS(750)
- #endif
-
- #if !WITHIN(SERIAL_PORT, -1, 3)
- #error "SERIAL_PORT must be from -1 to 3"
- #endif
-
- #if SERIAL_PORT == -1
- #define MYSERIAL0 UsbSerial
- #elif SERIAL_PORT == 0
- #define MYSERIAL0 MSerial
- #elif SERIAL_PORT == 1
- #define MYSERIAL0 MSerial1
- #elif SERIAL_PORT == 2
- #define MYSERIAL0 MSerial2
- #elif SERIAL_PORT == 3
- #define MYSERIAL0 MSerial3
- #endif
-
- #ifdef SERIAL_PORT_2
- #if !WITHIN(SERIAL_PORT_2, -1, 3)
- #error "SERIAL_PORT_2 must be from -1 to 3"
- #elif SERIAL_PORT_2 == SERIAL_PORT
- #error "SERIAL_PORT_2 must be different than SERIAL_PORT"
- #endif
- #define NUM_SERIAL 2
- #if SERIAL_PORT_2 == -1
- #define MYSERIAL1 UsbSerial
- #elif SERIAL_PORT_2 == 0
- #define MYSERIAL1 MSerial
- #elif SERIAL_PORT_2 == 1
- #define MYSERIAL1 MSerial1
- #elif SERIAL_PORT_2 == 2
- #define MYSERIAL1 MSerial2
- #elif SERIAL_PORT_2 == 3
- #define MYSERIAL1 MSerial3
- #endif
- #else
- #define NUM_SERIAL 1
- #endif
-
- //
- // Interrupts
- //
- #define CRITICAL_SECTION_START uint32_t primask = __get_PRIMASK(); __disable_irq()
- #define CRITICAL_SECTION_END if (!primask) __enable_irq()
- #define ISRS_ENABLED() (!__get_PRIMASK())
- #define ENABLE_ISRS() __enable_irq()
- #define DISABLE_ISRS() __disable_irq()
-
- //
- // Utility functions
- //
- int freeMemory(void);
-
- //
- // SPI: Extended functions taking a channel number (Hardware SPI only)
- //
-
- // Write single byte to specified SPI channel
- void spiSend(uint32_t chan, byte b);
- // Write buffer to specified SPI channel
- void spiSend(uint32_t chan, const uint8_t* buf, size_t n);
- // Read single byte from specified SPI channel
- uint8_t spiRec(uint32_t chan);
-
- //
- // ADC API
- //
-
- #define ADC_MEDIAN_FILTER_SIZE (23) // Higher values increase step delay (phase shift),
- // (ADC_MEDIAN_FILTER_SIZE + 1) / 2 sample step delay (12 samples @ 500Hz: 24ms phase shift)
- // Memory usage per ADC channel (bytes): (6 * ADC_MEDIAN_FILTER_SIZE) + 16
- // 8 * ((6 * 23) + 16 ) = 1232 Bytes for 8 channels
-
- #define ADC_LOWPASS_K_VALUE (6) // Higher values increase rise time
- // Rise time sample delays for 100% signal convergence on full range step
- // (1 : 13, 2 : 32, 3 : 67, 4 : 139, 5 : 281, 6 : 565, 7 : 1135, 8 : 2273)
- // K = 6, 565 samples, 500Hz sample rate, 1.13s convergence on full range step
- // Memory usage per ADC channel (bytes): 4 (32 Bytes for 8 channels)
-
- using FilteredADC = LPC176x::ADC<ADC_LOWPASS_K_VALUE, ADC_MEDIAN_FILTER_SIZE>;
- #define HAL_adc_init() FilteredADC::init()
- #define HAL_ANALOG_SELECT(pin) FilteredADC::enable_channel(pin)
- #define HAL_START_ADC(pin) FilteredADC::start_conversion(pin)
- #define HAL_READ_ADC() FilteredADC::get_result()
- #define HAL_ADC_READY() FilteredADC::finished_conversion()
-
- // Parse a G-code word into a pin index
- int16_t PARSED_PIN_INDEX(const char code, const int16_t dval);
- // P0.6 thru P0.9 are for the onboard SD card
- #define HAL_SENSITIVE_PINS P0_06, P0_07, P0_08, P0_09
-
- #define HAL_IDLETASK 1
- void HAL_idletask(void);
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