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driver.c
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/*
driver.c - driver code for RP2040 ARM processors
Part of grblHAL
Copyright (c) 2021-2022 Terje Io
Copyright (c) 2021 Volksolive
Grbl 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.
Grbl 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 Grbl. If not, see <http://www.gnu.org/licenses/>.
*/
#include <math.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>
#include <malloc.h>
#include "hardware/timer.h"
#include "hardware/irq.h"
#include "hardware/pio.h"
#include "hardware/gpio.h"
#include "hardware/pwm.h"
#include "hardware/clocks.h"
#include "hardware/spi.h"
#include "hardware/rtc.h"
#include "hardware/structs/systick.h"
#include "hardware/structs/iobank0.h"
#include "hardware/structs/sio.h"
#include "driver.h"
#include "serial.h"
#include "driverPIO.pio.h"
#include "grbl/crossbar.h"
#include "grbl/machine_limits.h"
#include "grbl/state_machine.h"
#include "grbl/motor_pins.h"
#include "grbl/pin_bits_masks.h"
#include "grbl/protocol.h"
#ifdef I2C_PORT
#include "i2c.h"
#endif
#if SDCARD_ENABLE
#include "sdcard/sdcard.h"
#include "ff.h"
#include "diskio.h"
#endif
#if LITTLEFS_ENABLE
#include "littlefs_hal.h"
#include "sdcard/fs_littlefs.h"
#endif
#if USB_SERIAL_CDC
#include "usb_serial.h"
#endif
#if EEPROM_ENABLE
#include "eeprom/eeprom.h"
#endif
#if KEYPAD_ENABLE == 2
#include "keypad/keypad.h"
#endif
#if ODOMETER_ENABLE
#include "odometer/odometer.h"
#endif
#if PPI_ENABLE
#include "laser/ppi.h"
#endif
#if FLASH_ENABLE
#include "flash.h"
#endif
#if IOEXPAND_ENABLE
#include "ioexpand.h"
#endif
#if WIFI_ENABLE
#include "wifi.h"
#endif
#ifdef GPIO_PIO_1
static uint x_step_sm;
static uint y_step_sm;
static uint z_step_sm;
static PIO z_step_pio;
#ifdef X2_STEP_PIN
static uint x2_step_sm;
#endif
#ifdef Y2_STEP_PIN
static uint y2_step_sm;
#endif
#ifdef Z2_STEP_PIN
static uint z2_step_sm;
#endif
#ifdef A_STEP_PIN
static uint a_step_sm;
#endif
#ifdef B_STEP_PIN
static uint b_step_sm;
#endif
#ifdef C_STEP_PIN
static uint c_step_sm;
#endif
#endif
typedef union {
uint32_t value;
struct {
uint32_t delay :8,
length :8,
set :6,
reset :6;
};
} pio_steps_t;
#if (!VFD_SPINDLE || N_SPINDLE > 1) && defined(SPINDLE_PORT)
#define DRIVER_SPINDLE
#if defined(SPINDLE_PWM_PIN)
static bool pwmEnabled = false;
static spindle_pwm_t spindle_pwm;
static void spindle_set_speed (uint_fast16_t pwm_value);
#endif
#elif defined(SPINDLE_PWM_PIN)
#undef SPINDLE_PWM_PIN
#endif
static pio_steps_t pio_steps = { .delay = 20, .length = 100 };
static uint step_pulse_sm, stepper_timer_sm, stepper_timer_sm_offset;
static uint16_t pulse_length, pulse_delay;
static bool IOInitDone = false;
static const io_stream_t *serial_stream;
static axes_signals_t next_step_outbits;
static status_code_t (*on_unknown_sys_command)(uint_fast16_t state, char *line, char *lcline);
static volatile uint32_t elapsed_ticks = 0;
static probe_state_t probe = {
.connected = On
};
static pin_group_pins_t limit_inputs;
#ifdef SAFETY_DOOR_PIN
static input_signal_t *safety_door;
#endif
#if IOEXPAND_ENABLE
static ioexpand_t io_expander = {0};
#endif
#include "grbl/stepdir_map.h"
static periph_signal_t *periph_pins = NULL;
static input_signal_t inputpin[] = {
#ifdef RESET_PIN
#if ESTOP_ENABLE
{ .id = Input_EStop, .port = GPIO_INPUT, .pin = RESET_PIN, .group = PinGroup_Control },
#else
{ .id = Input_Reset, .port = GPIO_INPUT, .pin = RESET_PIN, .group = PinGroup_Control },
#endif
#endif
#ifdef FEED_HOLD_PIN
{ .id = Input_FeedHold, .port = GPIO_INPUT, .pin = FEED_HOLD_PIN, .group = PinGroup_Control },
#endif
#ifdef CYCLE_START_PIN
{ .id = Input_CycleStart, .port = GPIO_INPUT, .pin = CYCLE_START_PIN, .group = PinGroup_Control },
#endif
#ifdef SAFETY_DOOR_PIN
{ .id = Input_SafetyDoor, .port = GPIO_INPUT, .pin = SAFETY_DOOR_PIN, .group = PinGroup_Control },
#endif
#ifdef LIMITS_OVERRIDE_PIN
{ .id = Input_LimitsOverride, .port = GPIO_INPUT, .pin = LIMITS_OVERRIDE_PIN, .group = PinGroup_Control },
#endif
#ifdef PROBE_PIN
{ .id = Input_Probe, .port = GPIO_INPUT, .pin = PROBE_PIN, .group = PinGroup_Probe },
#endif
{ .id = Input_LimitX, .port = GPIO_INPUT, .pin = X_LIMIT_PIN, .group = PinGroup_Limit },
#ifdef X2_LIMIT_PIN
{ .id = Input_LimitX_2, .port = GPIO_INPUT, .pin = X2_LIMIT_PIN, .group = PinGroup_Limit },
#endif
{ .id = Input_LimitY, .port = GPIO_INPUT, .pin = Y_LIMIT_PIN, .group = PinGroup_Limit },
#ifdef Y2_LIMIT_PIN
{ .id = Input_LimitY_Max, .port = GPIO_INPUT, .pin = Y2_LIMIT_PIN, .group = PinGroup_Limit },
#endif
{ .id = Input_LimitZ, .port = GPIO_INPUT, .pin = Z_LIMIT_PIN, .group = PinGroup_Limit }
#ifdef Z2_LIMIT_PIN
, { .id = Input_LimitZ_Max, .port = GPIO_INPUT, .pin = Z2_LIMIT_PIN, .group = PinGroup_Limit }
#endif
#ifdef A_LIMIT_PIN
, { .id = Input_LimitA, .port = GPIO_INPUT, .pin = A_LIMIT_PIN, .group = PinGroup_Limit }
#endif
#ifdef B_LIMIT_PIN
, { .id = Input_LimitB, .port = GPIO_INPUT, .pin = B_LIMIT_PIN, .group = PinGroup_Limit }
#endif
#ifdef C_LIMIT_PIN
, { .id = Input_LimitC, .port = GPIO_INPUT, .pin = C_LIMIT_PIN, .group = PinGroup_Limit }
#endif
#if MPG_MODE_PIN
, { .id = Input_MPGSelect, .port = GPIO_INPUT, .pin = MPG_MODE_PIN, .group = PinGroup_MPG }
#endif
#if I2C_STROBE_ENABLE && defined(I2C_STROBE_PIN)
, { .id = Input_KeypadStrobe, .port = GPIO_INPUT, .pin = I2C_STROBE_PIN, .group = PinGroup_Keypad }
#endif
#ifdef AUX_INPUT0_PIN
, { .id = Input_Aux0, .port = GPIO_INPUT, .pin = AUX_INPUT0_PIN, .group = PinGroup_AuxInput }
#endif
#ifdef AUX_INPUT1_PIN
, { .id = Input_Aux1, .port = GPIO_INPUT, .pin = AUX_INPUT1_PIN, .group = PinGroup_AuxInput }
#endif
#ifdef AUX_INPUT2_PIN
, { .id = Input_Aux2, .port = GPIO_INPUT, .pin = AUX_INPUT2_PIN, .group = PinGroup_AuxInput }
#endif
#ifdef AUX_INPUT3_PIN
, { .id = Input_Aux3, .port = GPIO_INPUT, .pin = AUX_INPUT3_PIN, .group = PinGroup_AuxInput }
#endif
#ifdef AUX_INPUT4_PIN
, { .id = Input_Aux4, .port = GPIO_INPUT, .pin = AUX_INPUT4_PIN, .group = PinGroup_AuxInput }
#endif
#ifdef AUX_INPUT5_PIN
, { .id = Input_Aux5, .port = GPIO_INPUT, .pin = AUX_INPUT5_PIN, .group = PinGroup_AuxInput }
#endif
#ifdef AUX_INPUT6_PIN
, { .id = Input_Aux6, .port = GPIO_INPUT, .pin = AUX_INPUT6_PIN, .group = PinGroup_AuxInput }
#endif
#ifdef AUX_INPUT7_PIN
, { .id = Input_Aux7, .port = GPIO_INPUT, .pin = AUX_INPUT7_PIN, .group = PinGroup_AuxInput }
#endif
};
#if STEP_PORT == GPIO_PIO
#define X_STEP_PIN STEP_PINS_BASE + 0
#define Y_STEP_PIN STEP_PINS_BASE + 1
#define Z_STEP_PIN STEP_PINS_BASE + 2
#define A_STEP_PIN STEP_PINS_BASE + 3
#define B_STEP_PIN STEP_PINS_BASE + 4
#define C_STEP_PIN STEP_PINS_BASE + 5
#endif
#if STEP_PORT == GPIO_SR8
#if N_ABC_MOTORS > 1
#error "Axis configuration is not supported!"
#endif
#define X_STEP_PIN 0
#define Y_STEP_PIN 1
#define Z_STEP_PIN 2
#ifdef X2_STEP_PORT
#undef X2_STEP_PIN
#define X2_STEP_PIN 3
#endif
#ifdef Y2_STEP_PORT
#undef Y2_STEP_PIN
#define Y2_STEP_PIN 3
#endif
#ifdef Z2_STEP_PORT
#undef Z2_STEP_PIN
#define Z2_STEP_PIN 3
#endif
#ifdef A_STEP_PORT
#undef A_STEP_PIN
#define A_STEP_PIN 3
#endif
#endif
#if DIRECTION_PORT == GPIO_SR8
#if N_ABC_MOTORS > 1
#error "Axis configuration is not supported!"
#endif
#define X_DIRECTION_PIN 4
#define Y_DIRECTION_PIN 5
#define Z_DIRECTION_PIN 6
#ifdef X2_DIRECTION_PORT
#undef X2_DIRECTION_PIN
#define X2_DIRECTION_PIN 7
#endif
#ifdef Y2_DIRECTION_PORT
#undef Y2_DIRECTION_PIN
#define Y2_DIRECTION_PIN 7
#endif
#ifdef Z2_DIRECTION_PORT
#undef Z2_DIRECTION_PIN
#define Z2_DIRECTION_PIN 7
#endif
#ifdef A_DIRECTION_PORT
#undef A_DIRECTION_PIN
#define A_DIRECTION_PIN 7
#endif
#endif
#if ENABLE_PORT == GPIO_SR16
#if N_ABC_MOTORS > 1
#error "Axis configuration is not supported!"
#endif
#define X_ENABLE_PIN 0
#define Y_ENABLE_PIN 1
#define Z_ENABLE_PIN 2
#ifdef X2_ENABLE_PORT
#undef X2_ENABLE_PIN
#define X2_ENABLE_PIN 3
#endif
#ifdef Y2_ENABLE_PORT
#undef Y2_ENABLE_PIN
#define Y2_ENABLE_PIN 3
#endif
#ifdef Z2_ENABLE_PORT
#undef Z2_ENABLE_PIN
#define Z2_ENABLE_PIN 3
#endif
#ifdef A_ENABLE_PORT
#undef A_ENABLE_PIN
#define A_ENABLE_PIN 3
#endif
#endif
static output_signal_t outputpin[] = {
{ .id = Output_StepX, .port = STEP_PORT, .pin = X_STEP_PIN, .group = PinGroup_StepperStep, .mode = {STEP_PINMODE} },
{ .id = Output_StepY, .port = STEP_PORT, .pin = Y_STEP_PIN, .group = PinGroup_StepperStep, .mode = {STEP_PINMODE} },
{ .id = Output_StepZ, .port = STEP_PORT, .pin = Z_STEP_PIN, .group = PinGroup_StepperStep, .mode = {STEP_PINMODE} },
#ifdef A_STEP_PIN
{ .id = Output_StepA, .port = STEP_PORT, .pin = A_STEP_PIN, .group = PinGroup_StepperStep, .mode = {STEP_PINMODE} },
#endif
#ifdef B_STEP_PIN
{ .id = Output_StepB, .port = STEP_PORT, .pin = B_STEP_PIN, .group = PinGroup_StepperStep, .mode = {STEP_PINMODE} },
#endif
#ifdef C_STEP_PIN
{ .id = Output_StepC, .port = STEP_PORT, .pin = C_STEP_PIN, .group = PinGroup_StepperStep, .mode = {STEP_PINMODE} },
#endif
#ifdef X2_STEP_PIN
{ .id = Output_StepX_2, .port = STEP_PORT, .pin = X2_STEP_PIN, .group = PinGroup_StepperStep, .mode = {STEP_PINMODE} },
#endif
#ifdef Y2_STEP_PIN
{ .id = Output_StepY_2, .port = STEP_PORT, .pin = Y2_STEP_PIN, .group = PinGroup_StepperStep, .mode = {STEP_PINMODE} },
#endif
#ifdef Z2_STEP_PIN
{ .id = Output_StepZ_2, .port = STEP_PORT, .pin = Z2_STEP_PIN, .group = PinGroup_StepperStep, .mode = {STEP_PINMODE} },
#endif
{ .id = Output_DirX, .port = DIRECTION_PORT, .pin = X_DIRECTION_PIN, .group = PinGroup_StepperDir, .mode = {DIRECTION_PINMODE} },
{ .id = Output_DirY, .port = DIRECTION_PORT, .pin = Y_DIRECTION_PIN, .group = PinGroup_StepperDir, .mode = {DIRECTION_PINMODE} },
{ .id = Output_DirZ, .port = DIRECTION_PORT, .pin = Z_DIRECTION_PIN, .group = PinGroup_StepperDir, .mode = {DIRECTION_PINMODE} },
#ifdef A_DIRECTION_PIN
{ .id = Output_DirA, .port = DIRECTION_PORT, .pin = A_DIRECTION_PIN, .group = PinGroup_StepperDir, .mode = {DIRECTION_PINMODE} },
#endif
#ifdef B_DIRECTION_PIN
{ .id = Output_DirB, .port = DIRECTION_PORT, .pin = B_DIRECTION_PIN, .group = PinGroup_StepperDir, .mode = {DIRECTION_PINMODE} },
#endif
#ifdef C_DIRECTION_PIN
{ .id = Output_DirC, .port = DIRECTION_PORT, .pin = C_DIRECTION_PIN, .group = PinGroup_StepperDir, .mode = {DIRECTION_PINMODE} },
#endif
#ifdef X2_DIRECTION_PIN
{ .id = Output_DirX_2, .port = DIRECTION_PORT, .pin = X2_DIRECTION_PIN, .group = PinGroup_StepperDir, .mode = {DIRECTION_PINMODE} },
#endif
#ifdef Y2_DIRECTION_PIN
{ .id = Output_DirY_2, .port = DIRECTION_PORT, .pin = Y2_DIRECTION_PIN, .group = PinGroup_StepperDir, .mode = {DIRECTION_PINMODE} },
#endif
#ifdef Z2_DIRECTION_PIN
{ .id = Output_DirZ_2, .port = DIRECTION_PORT, .pin = Z2_DIRECTION_PIN, .group = PinGroup_StepperDir, .mode = {DIRECTION_PINMODE} },
#endif
#if !(TRINAMIC_ENABLE && TRINAMIC_I2C)
#ifndef STEPPERS_ENABLE_PIN
#ifdef X_ENABLE_PIN
{ .id = Output_StepperEnableX, .port = ENABLE_PORT, .pin = X_ENABLE_PIN, .group = PinGroup_StepperEnable, .mode = {STEPPERS_ENABLE_PINMODE} },
#endif
#ifdef Y_ENABLE_PIN
{ .id = Output_StepperEnableY, .port = ENABLE_PORT, .pin = Y_ENABLE_PIN, .group = PinGroup_StepperEnable, .mode = {STEPPERS_ENABLE_PINMODE} },
#endif
#ifdef Z_ENABLE_PIN
{ .id = Output_StepperEnableZ, .port = ENABLE_PORT, .pin = Z_ENABLE_PIN, .group = PinGroup_StepperEnable, .mode = {STEPPERS_ENABLE_PINMODE} },
#endif
#ifdef X2_ENABLE_PIN
{ .id = Output_StepperEnableX, .port = ENABLE_PORT, .pin = X2_ENABLE_PIN, .group = PinGroup_StepperEnable, .mode = {STEPPERS_ENABLE_PINMODE} },
#endif
#ifdef Y2_ENABLE_PIN
{ .id = Output_StepperEnableY, .port = ENABLE_PORT, .pin = Y2_ENABLE_PIN, .group = PinGroup_StepperEnable, .mode = {STEPPERS_ENABLE_PINMODE} },
#endif
#ifdef Z2_ENABLE_PIN
{ .id = Output_StepperEnableZ, .port = ENABLE_PORT, .pin = Z2_ENABLE_PIN, .group = PinGroup_StepperEnable, .mode = {STEPPERS_ENABLE_PINMODE} },
#endif
#ifdef A_ENABLE_PIN
{ .id = Output_StepperEnableA, .port = ENABLE_PORT, .pin = A_ENABLE_PIN, .group = PinGroup_StepperEnable, .mode = {STEPPERS_ENABLE_PINMODE} },
#endif
#ifdef B_ENABLE_PIN
{ .id = Output_StepperEnableB, .port = ENABLE_PORT, .pin = B_ENABLE_PIN, .group = PinGroup_StepperEnable, .mode = {STEPPERS_ENABLE_PINMODE} },
#endif
#ifdef C_ENABLE_PIN
{ .id = Output_StepperEnableC, .port = ENABLE_PORT, .pin = C_ENABLE_PIN, .group = PinGroup_StepperEnable, .mode = {STEPPERS_ENABLE_PINMODE} },
#endif
#else // STEPPERS_ENABLE_PIN
{ .id = Output_StepperEnable, .port = ENABLE_PORT, .pin = STEPPERS_ENABLE_PIN, .group = PinGroup_StepperEnable, .mode = {STEPPERS_ENABLE_PINMODE} },
#endif
#endif // !(TRINAMIC_ENABLE && TRINAMIC_I2C)
#ifdef SPINDLE_PWM_PIN
{ .id = Output_SpindlePWM, .port = SPINDLE_PWM_PORT, .pin = SPINDLE_PWM_PIN, .group = PinGroup_SpindlePWM },
#endif
#ifdef RTS_PIN
{ .id = Output_RTS, .port = GPIO_OUTPUT, .pin = RTS_PIN, .group = PinGroup_UART },
#endif
#ifdef SD_CS_PIN
{ .id = Output_SdCardCS, .port = GPIO_OUTPUT, .pin = SD_CS_PIN, .group = PinGroup_SdCard },
#endif
#ifndef SD_SHIFT_REGISTER
#ifdef SPINDLE_ENABLE_PIN
{ .id = Output_SpindleOn, .port = SPINDLE_PORT, .pin = SPINDLE_ENABLE_PIN, .group = PinGroup_SpindleControl },
#endif
#ifdef SPINDLE_DIRECTION_PIN
{ .id = Output_SpindleDir, .port = SPINDLE_PORT, .pin = SPINDLE_DIRECTION_PIN, .group = PinGroup_SpindleControl },
#endif
#ifdef COOLANT_FLOOD_PIN
{ .id = Output_CoolantFlood, .port = COOLANT_PORT, .pin = COOLANT_FLOOD_PIN, .group = PinGroup_Coolant },
#endif
#ifdef COOLANT_MIST_PIN
{ .id = Output_CoolantMist, .port = COOLANT_PORT, .pin = COOLANT_MIST_PIN, .group = PinGroup_Coolant },
#endif
#ifdef AUXOUTPUT0_PORT
{ .id = Output_Aux0, .port = AUXOUTPUT0_PORT, .pin = AUXOUTPUT0_PIN, .group = PinGroup_AuxOutput },
#endif
#ifdef AUXOUTPUT1_PORT
{ .id = Output_Aux1, .port = AUXOUTPUT1_PORT, .pin = AUXOUTPUT1_PIN, .group = PinGroup_AuxOutput },
#endif
#ifdef AUXOUTPUT2_PORT
{ .id = Output_Aux2, .port = AUXOUTPUT2_PORT, .pin = AUXOUTPUT2_PIN, .group = PinGroup_AuxOutput },
#endif
#ifdef AUXOUTPUT3_PORT
{ .id = Output_Aux3, .port = AUXOUTPUT3_PORT, .pin = AUXOUTPUT3_PIN, .group = PinGroup_AuxOutput },
#endif
#ifdef AUXOUTPUT4_PORT
{ .id = Output_Aux4, .port = AUXOUTPUT4_PORT, .pin = AUXOUTPUT4_PIN, .group = PinGroup_AuxOutput },
#endif
#ifdef AUXOUTPUT5_PORT
{ .id = Output_Aux5, .port = AUXOUTPUT5_PORT, .pin = AUXOUTPUT5_PIN, .group = PinGroup_AuxOutput },
#endif
#ifdef AUXOUTPUT6_PORT
{ .id = Output_Aux6, .port = AUXOUTPUT6_PORT, .pin = AUXOUTPUT6_PIN, .group = PinGroup_AuxOutput },
#endif
#ifdef AUXOUTPUT7_PORT
{ .id = Output_Aux7, .port = AUXOUTPUT7_PORT, .pin = AUXOUTPUT7_PIN, .group = PinGroup_AuxOutput },
#endif
#else // SD_SHIFT_REGISTER pin definitions - for $pins command only
{ .id = Output_SpindleOn, .port = GPIO_SR16, .pin = 4, .group = PinGroup_SpindleControl },
{ .id = Output_SpindleDir, .port = GPIO_SR16, .pin = 5, .group = PinGroup_SpindleControl },
{ .id = Output_CoolantFlood, .port = GPIO_SR16, .pin = 6, .group = PinGroup_Coolant },
{ .id = Output_CoolantMist, .port = GPIO_SR16, .pin = 7, .group = PinGroup_Coolant },
{ .id = Output_Aux0, .port = GPIO_SR16, .pin = 8, .group = PinGroup_AuxOutput },
{ .id = Output_Aux1, .port = GPIO_SR16, .pin = 9, .group = PinGroup_AuxOutput },
{ .id = Output_Aux2, .port = GPIO_SR16, .pin = 10, .group = PinGroup_AuxOutput },
{ .id = Output_Aux3, .port = GPIO_SR16, .pin = 11, .group = PinGroup_AuxOutput },
{ .id = Output_Aux4, .port = GPIO_SR16, .pin = 12, .group = PinGroup_AuxOutput },
{ .id = Output_Aux5, .port = GPIO_SR16, .pin = 13, .group = PinGroup_AuxOutput },
{ .id = Output_Aux6, .port = GPIO_SR16, .pin = 14, .group = PinGroup_AuxOutput },
{ .id = Output_Aux7, .port = GPIO_SR16, .pin = 15, .group = PinGroup_AuxOutput }
#endif
};
#if KEYPAD_ENABLE == 0
#define KEYPAD_STROBE_BIT 0
#endif
// This should be a sdk function but it doesn't exist yet
#define gpio_set_irqover(gpio, value) hw_write_masked(&iobank0_hw->io[gpio].ctrl, value << IO_BANK0_GPIO0_CTRL_IRQOVER_LSB, IO_BANK0_GPIO0_CTRL_IRQOVER_BITS);
#define NVIC_HIGH_LEVEL_PRIORITY 0xC0
#define NVIC_MEDIUM_LEVEL_PRIORITY 0x80
#define NVIC_LOW_LEVEL_PRIORITY 0x40
#define DRIVER_IRQMASK (LIMIT_MASK|CONTROL_MASK|KEYPAD_STROBE_BIT|SPINDLE_INDEX_BIT)
#define LIMIT_DEBOUNCE_TEMPO 40 // 40ms for Limit debounce
#define SR_LATCH_DEBOUNCE_TEMPO 40 // 40ms for SR LATCH
/*
#define DEBOUNCE_ALARM_HW_TIMER 0 // Hardware alarm timer 0 used for the debounce alarm pool
#define DEBOUNCE_ALARM_MAX_TIMER 16 // Maximum number of alarm timer in the debounce alarm pool (based on SDK 'PICO_TIME_DEFAULT_ALARM_POOL_MAX_TIMERS 16' for default pool used for driver_delay in driver.c)
typedef struct {
alarm_id_t id;
uint8_t pin;
uint8_t level;
} debounce_pool_t;
static alarm_pool_t *debounceAlarmPool;
static volatile debounce_pool_t debounceAlarmPoolArray[DEBOUNCE_ALARM_MAX_TIMER];
*/
#if SD_SHIFT_REGISTER
static step_dir_sr_t sd_sr;
#endif
#if OUT_SHIFT_REGISTER
static uint32_t out_sr_sm;
static output_sr_t out_sr;
#endif
static void systick_handler (void);
static void stepper_int_handler (void);
static void gpio_int_handler (uint gpio, uint32_t events);
static void spindle_set_speed (uint_fast16_t pwm_value);
#if I2C_STROBE_ENABLE
static driver_irq_handler_t i2c_strobe = { .type = IRQ_I2C_Strobe };
static bool irq_claim (irq_type_t irq, uint_fast8_t id, irq_callback_ptr handler)
{
bool ok;
if((ok = irq == IRQ_I2C_Strobe && i2c_strobe.callback == NULL))
i2c_strobe.callback = handler;
return ok;
}
#endif
static int64_t delay_callback(alarm_id_t id, void *callback)
{
((delay_callback_ptr)callback)();
return 0;
}
static void driver_delay (uint32_t ms, delay_callback_ptr callback)
{
if(ms > 0) {
if(callback)
add_alarm_in_ms(ms, delay_callback, callback, false);
else {
uint32_t delay = ms * 1000, start = timer_hw->timerawl;
while(timer_hw->timerawl - start < delay)
grbl.on_execute_delay(state_get());
}
} else if(callback)
callback();
tight_loop_contents();
}
//************************* STEPPER *************************//
// Enable/disable stepper motors
static void stepperEnable (axes_signals_t enable)
{
enable.mask ^= settings.steppers.enable_invert.mask;
#if TRINAMIC_ENABLE && TRINAMIC_I2C
axes_signals_t tmc_enable = trinamic_stepper_enable(enable);
#elif ENABLE_PORT == GPIO_OUTPUT
#ifndef STEPPERS_ENABLE_PIN
gpio_put(X_ENABLE_PIN, enable.x);
#ifdef Y_ENABLE_PIN
gpio_put(Y_ENABLE_PIN, enable.y);
#endif
gpio_put(Z_ENABLE_PIN, enable.z);
#ifdef X2_ENABLE_PIN
gpio_put(X2_ENABLE_PIN, enable.x);
#endif
#ifdef Y2_ENABLE_PIN
gpio_put(Y2_ENABLE_PIN, enable.y);
#endif
#ifdef Z2_ENABLE_PIN
gpio_put(Z2_ENABLE_PIN, enable.z);
#endif
#ifdef A_ENABLE_PIN
gpio_put(A_ENABLE_PIN, enable.a);
#endif
#ifdef B_ENABLE_PIN
gpio_put(B_ENABLE_PIN, enable.b);
#endif
#ifdef C_ENABLE_PIN
gpio_put(C_ENABLE_PIN, enable.c);
#endif
#else // STEPPERS_ENABLE_PIN
gpio_put(STEPPERS_ENABLE_PIN, enable.x);
#endif
#elif ENABLE_PORT == GPIO_SR16
out_sr.x_ena = enable.x;
#ifdef X2_ENABLE_PIN
out_sr.m3_ena = enable.x;
#endif
out_sr.y_ena = enable.y;
#ifdef Y2_ENABLE_PIN
out_sr.m3_ena = enable.y;
#endif
out_sr.z_ena = enable.z;
#ifdef Z2_ENABLE_PIN
out_sr.m3_ena = enable.z;
#endif
#ifdef A_ENABLE_PIN
out_sr.m3_ena = enable.a;
#endif
out_sr16_write(pio1, out_sr_sm, out_sr.value);
#elif ENABLE_PORT == GPIO_IOEXPAND
#ifdef STEPPERS_DISABLEX_PIN
ioex_out(STEPPERS_DISABLEX_PIN) = enable.x;
#endif
#ifdef STEPPERS_DISABLEZ_PIN
ioex_out(STEPPERS_DISABLEZ_PIN) = enable.z;
#endif
ioexpand_out(io_expander);
#endif
}
// Starts stepper driver ISR timer and forces a stepper driver interrupt callback
static void stepperWakeUp (void)
{
stepperEnable((axes_signals_t){AXES_BITMASK});
stepper_timer_set_period(pio1, stepper_timer_sm, stepper_timer_sm_offset, 1000);
irq_set_enabled(PIO1_IRQ_0, true);
}
// Disables stepper driver interrupts
static void stepperGoIdle (bool clear_signals)
{
irq_set_enabled(PIO1_IRQ_0, false);
stepper_timer_stop(pio1, stepper_timer_sm);
}
// Sets up stepper driver interrupt timeout, "Normal" version
static void __not_in_flash_func(stepperCyclesPerTick) (uint32_t cycles_per_tick)
{
stepper_timer_set_period(pio1, stepper_timer_sm, stepper_timer_sm_offset, cycles_per_tick < 1000000 ? cycles_per_tick : 1000000);
}
#ifdef SQUARING_ENABLED
static axes_signals_t motors_1 = {AXES_BITMASK}, motors_2 = {AXES_BITMASK};
// Set stepper pulse output pins
// NOTE: step_outbits are: bit0 -> X, bit1 -> Y, bit2 -> Z...
inline static __attribute__((always_inline)) void stepperSetStepOutputs (axes_signals_t step_outbits_1)
{
axes_signals_t step_outbits_2;
#if STEP_PORT == GPIO_PIO_1
step_outbits_2.mask = (step_outbits_1.mask & motors_2.mask) ^ settings.steppers.step_invert.mask;
step_outbits_1.mask = (step_outbits_1.mask & motors_1.mask) ^ settings.steppers.step_invert.mask;
pio_steps.set = step_outbits_1.x;
pio_steps.reset = settings.steppers.step_invert.x;
step_pulse_generate(pio1, x_step_sm, pio_steps.value);
#ifdef X2_STEP_PIN
pio_steps.set = step_outbits_2.x;
step_pulse_generate(pio0, x2_step_sm, pio_steps.value);
#endif
pio_steps.set = step_outbits_1.y;
pio_steps.reset = settings.steppers.step_invert.y;
step_pulse_generate(pio1, y_step_sm, pio_steps.value);
#ifdef Y2_STEP_PIN
pio_steps.set = step_outbits_2.y;
step_pulse_generate(pio0, y2_step_sm, pio_steps.value);
#endif
pio_steps.set = step_outbits_1.z;
pio_steps.reset = settings.steppers.step_invert.z;
step_pulse_generate(z_step_pio, z_step_sm, pio_steps.value);
#ifdef Z2_STEP_PIN
pio_steps.set = step_outbits_2.z;
step_pulse_generate(pio0, z2_step_sm, pio_steps.value);
#endif
#ifdef A_STEP_PIN
pio_steps.set = step_outbits_1.a;
pio_steps.reset = settings.steppers.step_invert.a;
step_pulse_generate(pio1, a_step_sm, pio_steps.value);
#endif
#ifdef B_STEP_PIN
pio_steps.set = step_outbits_1.b;
pio_steps.reset = settings.steppers.step_invert.b;
step_pulse_generate(pio1, b_step_sm, pio_steps.value);
#endif
#ifdef C_STEP_PIN
pio_steps.set = step_outbits_1.c;
pio_steps.reset = settings.steppers.step_invert.c;
step_pulse_generate(pio1, c_step_sm, pio_steps.value);
#endif
#elif STEP_PORT == GPIO_PIO
pio_steps.set = step_outbits_1.mask ^ settings.steppers.step_invert.mask;
#ifdef X2_STEP_PIN
if(step_outbits_1.x ^ settings.steppers.step_invert.x)
pio_steps.set |= X2_STEP_BIT;
#endif
#ifdef Y2_STEP_PIN
if(step_outbits_1.y ^ settings.steppers.step_invert.y)
pio_steps.set |= Y2_STEP_BIT;
#endif
#ifdef Z2_STEP_PIN
if(step_outbits_1.z ^ settings.steppers.step_invert.z)
pio_steps.set |= Z2_STEP_BIT;
#endif
step_pulse_generate(pio0, 0, pio_steps.value);
#elif STEP_PORT == GPIO_SR8
step_outbits_2.mask = (step_outbits_1.mask & motors_2.mask) ^ settings.steppers.step_invert.mask;
step_outbits_1.mask = (step_outbits_1.mask & motors_1.mask) ^ settings.steppers.step_invert.mask;
sd_sr.set.x_step = step_outbits_1.x;
#ifdef X2_STEP_PIN
sd_sr.set.m3_step = step_outbits_2.x;
#endif
sd_sr.set.y_step = step_outbits_1.y;
#ifdef Y2_STEP_PIN
sd_sr.set.m3_step = step_outbits_2.y;
#endif
sd_sr.set.z_step = step_outbits_1.z;
#ifdef Z2_STEP_PIN
sd_sr.set.m3_step = step_outbits_2.z;
#endif
#ifdef A_STEP_PIN
sd_sr.set.m3_step = step_outbits_1.a;
#endif
step_dir_sr4_write(pio0, 0, sd_sr.value);
#endif
}
// Enable/disable motors for auto squaring of ganged axes
static void StepperDisableMotors (axes_signals_t axes, squaring_mode_t mode)
{
motors_1.mask = (mode == SquaringMode_A || mode == SquaringMode_Both ? axes.mask : 0) ^ AXES_BITMASK;
motors_2.mask = (mode == SquaringMode_B || mode == SquaringMode_Both ? axes.mask : 0) ^ AXES_BITMASK;
}
#else // SQUARING_ENABLED
// Set stepper pulse output pins
// NOTE: step_outbits are: bit0 -> X, bit1 -> Y, bit2 -> Z...
inline static __attribute__((always_inline)) void stepperSetStepOutputs (axes_signals_t step_outbits)
{
#if STEP_PORT == GPIO_PIO_1
step_outbits.mask ^= settings.steppers.step_invert.mask;
pio_steps.set = step_outbits.x;
pio_steps.reset = settings.steppers.step_invert.x;
step_pulse_generate(pio1, x_step_sm, pio_steps.value);
#ifdef X2_STEP_PIN
step_pulse_generate(pio0, x2_step_sm, pio_steps.value);
#endif
pio_steps.set = step_outbits.y;
pio_steps.reset = settings.steppers.step_invert.y;
step_pulse_generate(pio1, y_step_sm, pio_steps.value);
#ifdef Y2_STEP_PIN
step_pulse_generate(pio0, y2_step_sm, pio_steps.value);
#endif
pio_steps.set = step_outbits.z;
pio_steps.reset = settings.steppers.step_invert.z;
step_pulse_generate(z_step_pio, z_step_sm, pio_steps.value);
#ifdef Z2_STEP_PIN
step_pulse_generate(pio0, z2_step_sm, pio_steps.value);
#endif
#ifdef A_STEP_PIN
pio_steps.set = step_outbits.a;
pio_steps.reset = settings.steppers.step_invert.a;
step_pulse_generate(pio1, a_step_sm, pio_steps.value);
#endif
#ifdef B_STEP_PIN
pio_steps.set = step_outbits.b;
pio_steps.reset = settings.steppers.step_invert.b;
step_pulse_generate(pio1, b_step_sm, pio_steps.value);
#endif
#ifdef C_STEP_PIN
pio_steps.set = step_outbits.c;
pio_steps.reset = settings.steppers.step_invert.c;
step_pulse_generate(pio1, c_step_sm, pio_steps.value);
#endif
#elif STEP_PORT == GPIO_PIO
pio_steps.set = step_outbits.mask ^ settings.steppers.step_invert.mask;
#ifdef X2_STEP_PIN
if(step_outbits.x ^ settings.steppers.step_invert.x)
pio_steps.set |= X2_STEP_BIT;
#endif
#ifdef Y2_STEP_PIN
if(step_outbits.y ^ settings.steppers.step_invert.y)
pio_steps.set |= Y2_STEP_BIT;
#endif
#ifdef Z2_STEP_PIN
if(step_outbits.z ^ settings.steppers.step_invert.z)
pio_steps.set |= Z2_STEP_BIT;
#endif
step_pulse_generate(pio0, 0, pio_steps.value);
#elif STEP_PORT == GPIO_SR8
step_outbits.mask ^= settings.steppers.step_invert.mask;
sd_sr.set.x_step = step_outbits.x;
#ifdef X2_STEP_PIN
sd_sr.set.m3_step = step_outbits.x;
#endif
sd_sr.set.y_step = step_outbits.y;
#ifdef Y2_STEP_PIN
sd_sr.set.m3_step = step_outbits.y;
#endif
sd_sr.set.z_step = step_outbits.z;
#ifdef Z2_STEP_PIN
sd_sr.set.m3_step = step_outbits.z;
#endif
#ifdef A_STEP_PIN
sd_sr.set.m3_step = step_outbits.a;
#endif
step_dir_sr4_write(pio0, 0, sd_sr.value);
#endif
}
#endif // SQUARING_ENABLED
#ifdef GANGING_ENABLED
static axes_signals_t getGangedAxes (bool auto_squared)
{
axes_signals_t ganged = {0};
if(auto_squared) {
#if X_AUTO_SQUARE
ganged.x = On;
#endif
#if Y_AUTO_SQUARE
ganged.y = On;
#endif
#if Z_AUTO_SQUARE
ganged.z = On;
#endif
} else {
#if X_GANGED
ganged.x = On;
#endif
#if Y_GANGED
ganged.y = On;
#endif
#if Z_GANGED
ganged.z = On;
#endif
}
return ganged;
}
#endif
// Set stepper direction output pins
// NOTE: see note for stepperSetStepOutputs()
//inline static __attribute__((always_inline)) void stepperSetDirOutputs (axes_signals_t dir_outbits)
static void stepperSetDirOutputs (axes_signals_t dir_outbits)
{
#if DIRECTION_PORT == GPIO_OUTPUT
#if DIRECTION_OUTMODE == GPIO_MAP
gpio_put_masked(DIRECTION_MASK, dir_outmap[dir_outbits.mask]);
#ifdef X2_DIRECTION_PIN
DIGITAL_OUT(X2_DIRECTION_BIT, (dir_outbits.x ^ settings.steppers.dir_invert.x) ^ settings.steppers.ganged_dir_invert.x);
#endif
#ifdef Y2_DIRECTION_PIN
DIGITAL_OUT(Y2_DIRECTION_BIT, (dir_outbits.y ^ settings.steppers.dir_invert.y) ^ settings.steppers.ganged_dir_invert.y);
#endif
#ifdef Z2_DIRECTION_PIN
DIGITAL_OUT(Z2_DIRECTION_BIT, (dir_outbits.z ^ settings.steppers.dir_invert.z) ^ settings.steppers.ganged_dir_invert.z);
#endif
#else
dir_outbits.mask ^= settings.steppers.dir_invert.mask;
gpio_put_masked(DIRECTION_MASK, dir_outbits.mask << DIRECTION_OUTMODE);
#ifdef GANGING_ENABLED
dir_outbits.mask ^= settings.steppers.ganged_dir_invert.mask;
#ifdef X2_DIRECTION_PIN
DIGITAL_OUT(X2_DIRECTION_BIT, dir_outbits.x);
#endif
#ifdef Y2_DIRECTION_PIN
DIGITAL_OUT(Y2_DIRECTION_BIT, dir_outbits.y);
#endif
#ifdef Z2_DIRECTION_PIN
DIGITAL_OUT(Z2_DIRECTION_BIT, dir_outbits.z);
#endif
#endif
#endif
#elif DIRECTION_PORT == GPIO_SR8
dir_outbits.mask ^= settings.steppers.dir_invert.mask;
sd_sr.set.x_dir = sd_sr.reset.x_dir = dir_outbits.x;
sd_sr.set.y_dir = sd_sr.reset.y_dir = dir_outbits.y;
sd_sr.set.z_dir = sd_sr.reset.z_dir = dir_outbits.z;
#ifdef GANGING_ENABLED
dir_outbits.mask ^= settings.steppers.ganged_dir_invert.mask;
#ifdef X2_DIRECTION_PIN
sd_sr.set.m3_dir = sd_sr.reset.m3_dir = dir_outbits.x;
#endif
#ifdef Y2_DIRECTION_PIN
sd_sr.set.m3_dir = sd_sr.reset.m3_dir = dir_outbits.y;
#endif
#ifdef Z2_DIRECTION_PIN
sd_sr.set.m3_dir = sd_sr.reset.m3_dir = dir_outbits.z;
#endif
#endif
#ifdef A_DIRECTION_PIN
sd_sr.set.m3_dir = sd_sr.reset.m3_dir = dir_outbits.a;
#endif
// dir signals are set on the next step pulse output
#endif
}
// Sets stepper direction and pulse pins and starts a step pulse.
static void __not_in_flash_func(stepperPulseStart) (stepper_t *stepper)
{
if(stepper->dir_change)
stepperSetDirOutputs(stepper->dir_outbits);
if(stepper->step_outbits.value)
stepperSetStepOutputs(stepper->step_outbits);
}
//************************* LIMIT *************************//
// Enable/disable limit pins interrupt
static void limitsEnable (bool on, bool homing)
{
uint32_t i = limit_inputs.n_pins;
on = on && settings.limits.flags.hard_enabled;
do {
i--;
pinEnableIRQ(&limit_inputs.pins.inputs[i], on ? limit_inputs.pins.inputs[i].irq_mode : IRQ_Mode_None);
} while(i);
#if TRINAMIC_ENABLE
// trinamic_homing(homing);
#endif
}
// Returns limit state as an limit_signals_t variable.
// Each bitfield bit indicates an axis limit, where triggered is 1 and not triggered is 0.
inline static limit_signals_t limitsGetState (void)
{
limit_signals_t signals = {0};
signals.min.x = DIGITAL_IN(X_LIMIT_BIT);
#ifdef X2_LIMIT_PIN
signals.min2.x = DIGITAL_IN(X2_LIMIT_BIT);
#endif
signals.min.y = DIGITAL_IN(Y_LIMIT_BIT);
#ifdef Y2_LIMIT_PIN
signals.min2.y = DIGITAL_IN(Y2_LIMIT_BIT);
#endif
signals.min.z = DIGITAL_IN(Z_LIMIT_BIT);
#ifdef Z2_LIMIT_PIN
signals.min2.z = DIGITAL_IN(Z2_LIMIT_BIT);
#endif
#ifdef A_LIMIT_PIN
signals.min.a = DIGITAL_IN(A_LIMIT_BIT);
#endif
#ifdef B_LIMIT_PIN
signals.min.b = DIGITAL_IN(B_LIMIT_BIT);
#endif
#ifdef C_LIMIT_PIN
signals.min.c = DIGITAL_IN(C_LIMIT_BIT);
#endif
return signals;
}
// Returns system state as a control_signals_t variable.
// Each bitfield bit indicates a control signal, where triggered is 1 and not triggered is 0.
static control_signals_t __not_in_flash_func(systemGetState) (void)
{
control_signals_t signals = {0};
#ifdef RESET_PIN
#ifdef ESTOP_ENABLE
signals.e_stop = DIGITAL_IN(RESET_BIT);
#else
signals.reset = DIGITAL_IN(RESET_BIT);
#endif
#endif
#ifdef FEED_HOLD_PIN
signals.feed_hold = DIGITAL_IN(FEED_HOLD_BIT);
#endif
#ifdef CYCLE_START_PIN
signals.cycle_start = DIGITAL_IN(CYCLE_START_BIT);
#endif
#ifdef SAFETY_DOOR_PIN
signals.safety_door_ajar = safety_door->active;