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/**
* Marlin 3D Printer Firmware
* Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
*
* Based on Sprinter and grbl.
* Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
*
* 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
/**
* This module is stripped down version of the LPC1768_PWM.h file from
* PR #7500. It is hardwired for the PRINTRBOARD_G2 Motor Current needs.
*/
#include "../../../inc/MarlinConfigPre.h"
#include "../../../module/stepper.h"
//C:\Users\bobku\Documents\GitHub\Marlin-Bob-2\Marlin\src\module\stepper.h
//C:\Users\bobku\Documents\GitHub\Marlin-Bob-2\Marlin\src\HAL\HAL_DUE\G2_PWM.h
#define PWM_PERIOD_US 100 // base repetition rate in micro seconds
typedef struct { // holds the data needed by the ISR to control the Vref pin
volatile uint32_t* set_register;
volatile uint32_t* clr_register;
uint32_t write_mask;
} PWM_map;
#define G2_VREF(I) (uint32_t)(I * 5 * 0.15) // desired Vref * 1000 (scaled so don't loose accuracy in next step)
#define G2_VREF_COUNT(Q) (uint32_t)map(constrain(Q, 500, 3.3 * 1000), 0, 3.3 * 1000, 0, PWM_PERIOD_US) // under 500 the results are very non-linear
extern volatile uint32_t *SODR_A, *SODR_B, *CODR_A, *CODR_B;
#define _PIN(IO) (DIO ## IO ## _PIN)
#define PWM_MAP_INIT_ROW(IO,ZZ) { ZZ == 'A' ? SODR_A : SODR_B, ZZ == 'A' ? CODR_A : CODR_B, 1 << _PIN(IO) }
#define PWM_MAP_INIT { PWM_MAP_INIT_ROW(MOTOR_CURRENT_PWM_X_PIN, 'B'), \
PWM_MAP_INIT_ROW(MOTOR_CURRENT_PWM_Y_PIN, 'B'), \
PWM_MAP_INIT_ROW(MOTOR_CURRENT_PWM_Z_PIN, 'B'), \
PWM_MAP_INIT_ROW(MOTOR_CURRENT_PWM_E_PIN, 'A'), \
};
#define NUM_PWMS 4
extern PWM_map ISR_table[NUM_PWMS];
extern uint32_t motor_current_setting[3];
#define IR_BIT(p) (WITHIN(p, 0, 3) ? (p) : (p) + 4)
#define COPY_ACTIVE_TABLE() do{ LOOP_L_N(i, 6) work_table[i] = active_table[i]; }while(0)
#define PWM_MR0 19999 // base repetition rate minus one count - 20mS
#define PWM_PR 24 // prescaler value - prescaler divide by 24 + 1 - 1 MHz output
#define PWM_PCLKSEL0 0x00 // select clock source for prescaler - defaults to 25MHz on power up
// 0: 25MHz, 1: 100MHz, 2: 50MHz, 3: 12.5MHZ to PWM1 prescaler
#define MR0_MARGIN 200 // if channel value too close to MR0 the system locks up
extern bool PWM_table_swap; // flag to tell the ISR that the tables have been swapped
#define HAL_G2_PWM_ISR void PWM_Handler()
extern volatile uint32_t PWM_ISR1_STATUS, PWM_ISR2_STATUS;
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