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- /**
- * Marlin 3D Printer Firmware
- *
- * Copyright (c) 2020 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 <https://www.gnu.org/licenses/>.
- *
- */
- #pragma once
-
- /**
- * HAL_LPC1768/HAL.h
- * Hardware Abstraction Layer for NXP LPC1768
- */
-
- #define CPU_32_BIT
-
- #include <stdint.h>
- #include <stdarg.h>
- #include <algorithm>
-
- extern "C" volatile uint32_t _millis;
-
- #include "../shared/Marduino.h"
- #include "../shared/math_32bit.h"
- #include "../shared/HAL_SPI.h"
- #include "fastio.h"
- #include "MarlinSerial.h"
-
- #include <adc.h>
- #include <pinmapping.h>
- #include <CDCSerial.h>
-
- // ------------------------
- // Serial ports
- // ------------------------
-
- typedef ForwardSerial1Class< decltype(UsbSerial) > DefaultSerial1;
- extern DefaultSerial1 USBSerial;
-
- #define _MSERIAL(X) MSerial##X
- #define MSERIAL(X) _MSERIAL(X)
-
- #if SERIAL_PORT == -1
- #define MYSERIAL1 USBSerial
- #elif WITHIN(SERIAL_PORT, 0, 3)
- #define MYSERIAL1 MSERIAL(SERIAL_PORT)
- #else
- #error "SERIAL_PORT must be from 0 to 3. You can also use -1 if the board supports Native USB."
- #endif
-
- #ifdef SERIAL_PORT_2
- #if SERIAL_PORT_2 == -1
- #define MYSERIAL2 USBSerial
- #elif WITHIN(SERIAL_PORT_2, 0, 3)
- #define MYSERIAL2 MSERIAL(SERIAL_PORT_2)
- #else
- #error "SERIAL_PORT_2 must be from 0 to 3. You can also use -1 if the board supports Native USB."
- #endif
- #endif
-
- #ifdef SERIAL_PORT_3
- #if SERIAL_PORT_3 == -1
- #define MYSERIAL3 USBSerial
- #elif WITHIN(SERIAL_PORT_3, 0, 3)
- #define MYSERIAL3 MSERIAL(SERIAL_PORT_3)
- #else
- #error "SERIAL_PORT_3 must be from 0 to 3. You can also use -1 if the board supports Native USB."
- #endif
- #endif
-
- #ifdef MMU2_SERIAL_PORT
- #if MMU2_SERIAL_PORT == -1
- #define MMU2_SERIAL USBSerial
- #elif WITHIN(MMU2_SERIAL_PORT, 0, 3)
- #define MMU2_SERIAL MSERIAL(MMU2_SERIAL_PORT)
- #else
- #error "MMU2_SERIAL_PORT must be from 0 to 3. You can also use -1 if the board supports Native USB."
- #endif
- #endif
-
- #ifdef LCD_SERIAL_PORT
- #if LCD_SERIAL_PORT == -1
- #define LCD_SERIAL USBSerial
- #elif WITHIN(LCD_SERIAL_PORT, 0, 3)
- #define LCD_SERIAL MSERIAL(LCD_SERIAL_PORT)
- #else
- #error "LCD_SERIAL_PORT must be from 0 to 3. You can also use -1 if the board supports Native USB."
- #endif
- #if HAS_DGUS_LCD
- #define SERIAL_GET_TX_BUFFER_FREE() LCD_SERIAL.available()
- #endif
- #endif
-
- //
- // Interrupts
- //
-
- #define CRITICAL_SECTION_START() const bool irqon = !__get_PRIMASK(); __disable_irq()
- #define CRITICAL_SECTION_END() if (irqon) __enable_irq()
-
- //
- // ADC
- //
-
- #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 (2) // 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)
-
- #define HAL_ADC_VREF 3.3 // ADC voltage reference
-
- #define HAL_ADC_RESOLUTION 12 // 15 bit maximum, raw temperature is stored as int16_t
- #define HAL_ADC_FILTERED // Disable oversampling done in Marlin as ADC values already filtered in HAL
-
- //
- // Pin Mapping for M42, M43, M226
- //
-
- // Test whether the pin is valid
- constexpr bool VALID_PIN(const pin_t pin) {
- return LPC176x::pin_is_valid(pin);
- }
-
- // Get the analog index for a digital pin
- constexpr int8_t DIGITAL_PIN_TO_ANALOG_PIN(const pin_t pin) {
- return (LPC176x::pin_is_valid(pin) && LPC176x::pin_has_adc(pin)) ? pin : -1;
- }
-
- // Return the index of a pin number
- constexpr int16_t GET_PIN_MAP_INDEX(const pin_t pin) {
- return LPC176x::pin_index(pin);
- }
-
- // Get the pin number at the given index
- constexpr pin_t GET_PIN_MAP_PIN(const int16_t index) {
- return LPC176x::pin_index(index);
- }
-
- // 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,
-
- // ------------------------
- // Defines
- // ------------------------
-
- #define PLATFORM_M997_SUPPORT
- void flashFirmware(const int16_t);
-
- #define HAL_CAN_SET_PWM_FREQ // This HAL supports PWM Frequency adjustment
-
- // Default graphical display delays
- #define CPU_ST7920_DELAY_1 600
- #define CPU_ST7920_DELAY_2 750
- #define CPU_ST7920_DELAY_3 750
-
- // ------------------------
- // Free Memory Accessor
- // ------------------------
-
- #pragma GCC diagnostic push
- #if GCC_VERSION <= 50000
- #pragma GCC diagnostic ignored "-Wunused-function"
- #endif
-
- int freeMemory();
-
- #pragma GCC diagnostic pop
-
- // ------------------------
- // MarlinHAL Class
- // ------------------------
-
- class MarlinHAL {
- public:
-
- // Earliest possible init, before setup()
- MarlinHAL() {}
-
- static void init(); // Called early in setup()
- static void init_board() {} // Called less early in setup()
- static void reboot(); // Restart the firmware from 0x0
-
- // Interrupts
- static bool isr_state() { return !__get_PRIMASK(); }
- static void isr_on() { __enable_irq(); }
- static void isr_off() { __disable_irq(); }
-
- static void delay_ms(const int ms) { _delay_ms(ms); }
-
- // Watchdog
- static void watchdog_init() IF_DISABLED(USE_WATCHDOG, {});
- static void watchdog_refresh() IF_DISABLED(USE_WATCHDOG, {});
- static bool watchdog_timed_out() IF_DISABLED(USE_WATCHDOG, { return false; });
- static void watchdog_clear_timeout_flag() IF_DISABLED(USE_WATCHDOG, {});
-
- // Tasks, called from idle()
- static void idletask();
-
- // Reset
- static uint8_t get_reset_source();
- static void clear_reset_source();
-
- // Free SRAM
- static int freeMemory() { return ::freeMemory(); }
-
- //
- // ADC Methods
- //
-
- using FilteredADC = LPC176x::ADC<ADC_LOWPASS_K_VALUE, ADC_MEDIAN_FILTER_SIZE>;
-
- // Called by Temperature::init once at startup
- static void adc_init() {}
-
- // Called by Temperature::init for each sensor at startup
- static void adc_enable(const pin_t pin) {
- FilteredADC::enable_channel(pin);
- }
-
- // Begin ADC sampling on the given pin. Called from Temperature::isr!
- static uint32_t adc_result;
- static void adc_start(const pin_t pin) {
- adc_result = FilteredADC::read(pin) >> (16 - HAL_ADC_RESOLUTION); // returns 16bit value, reduce to required bits
- }
-
- // Is the ADC ready for reading?
- static bool adc_ready() { return true; }
-
- // The current value of the ADC register
- static uint16_t adc_value() { return uint16_t(adc_result); }
-
- /**
- * Set the PWM duty cycle for the pin to the given value.
- * Optionally invert the duty cycle [default = false]
- * Optionally change the scale of the provided value to enable finer PWM duty control [default = 255]
- */
- static void set_pwm_duty(const pin_t pin, const uint16_t v, const uint16_t v_size=255, const bool invert=false);
-
- /**
- * Set the frequency of the timer corresponding to the provided pin
- * All Hardware PWM pins will run at the same frequency and
- * All Software PWM pins will run at the same frequency
- */
- static void set_pwm_frequency(const pin_t pin, const uint16_t f_desired);
- };
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