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diff --git a/cc3200/mods/pybextint.c b/cc3200/mods/pybextint.c
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-/*
- * This file is part of the Micro Python project, http://micropython.org/
- *
- * The MIT License (MIT)
- *
- * Copyright (c) 2013, 2014 Damien P. George
- * Copyright (c) 2015 Daniel Campora
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#include <stdio.h>
-#include <stddef.h>
-#include <string.h>
-
-#include "py/mpstate.h"
-#include MICROPY_HAL_H
-#include "py/runtime.h"
-#include "py/gc.h"
-#include "py/objlist.h"
-#include "inc/hw_types.h"
-#include "inc/hw_gpio.h"
-#include "inc/hw_ints.h"
-#include "inc/hw_memmap.h"
-#include "rom_map.h"
-#include "pin.h"
-#include "gpio.h"
-#include "pybpin.h"
-#include "pybextint.h"
-#include "mpexception.h"
-#include "interrupt.h"
-#include "cc3200_asm.h"
-#include "mperror.h"
-
-/// \moduleref pyb
-/// \class ExtInt - configure I/O pins to interrupt on external events
-///
-/// There are a maximum of 25 gpio interrupt lines.
-///
-/// Example callback:
-///
-/// def callback(line):
-/// print(line.pin())
-///
-/// Note: ExtInt will automatically configure the gpio line as an input.
-///
-/// extint = pyb.ExtInt('GPIO10', pyb.ExtInt.IRQ_FALLING, pyb.GPIO.STD_PU, callback)
-///
-/// Now every time a falling edge is seen on the gpio pin, the callback will be
-/// called. Caution: mechanical pushbuttons have "bounce" and pushing or
-/// releasing a switch will often generate multiple edges.
-/// See: http://www.eng.utah.edu/~cs5780/debouncing.pdf for a detailed
-/// explanation, along with various techniques for debouncing.
-///
-/// All pin objects go through the pin mapper to come up with one of the
-/// gpio pins.
-///
-/// extint = pyb.ExtInt(pin, mode, pull, callback)
-///
-/// There is also a C API, so that drivers which require EXTI interrupt lines
-/// can also use this code. See pybextint.h for the available functions.
-
-STATIC void ExecuteIntCallback (extint_obj_t *self);
-STATIC void GPIOA0IntHandler (void);
-STATIC void GPIOA1IntHandler (void);
-STATIC void GPIOA2IntHandler (void);
-STATIC void GPIOA3IntHandler (void);
-STATIC void EXTI_Handler(uint port);
-
-STATIC extint_obj_t* extint_add (uint pin_num, uint port, uint bit) {
- extint_obj_t *self = m_new_obj(extint_obj_t);
-
- self->port = port;
- self->bit = bit;
- self->callback = NULL;
- self->pin_num = pin_num;
- // add it to the list
- mp_obj_list_append(&MP_STATE_PORT(pyb_extint_list), self);
-
- return self;
-}
-
-STATIC extint_obj_t* extint_find (uint port, uint8_t bit) {
- for (mp_uint_t i = 0; i < MP_STATE_PORT(pyb_extint_list).len; i++) {
- extint_obj_t *self = (extint_obj_t *)MP_STATE_PORT(pyb_extint_list).items[i];
- if (self->port == port && self->bit == bit) {
- return self;
- }
- }
- return NULL;
-}
-
-/// \method line()
-/// Return the pin number to which this external interrupt is mapped to.
-STATIC mp_obj_t extint_obj_pin(mp_obj_t self_in) {
- extint_obj_t *self = self_in;
- return MP_OBJ_NEW_SMALL_INT(self->pin_num);
-}
-STATIC MP_DEFINE_CONST_FUN_OBJ_1(extint_obj_pin_obj, extint_obj_pin);
-
-/// \method enable()
-/// Enable a disabled interrupt.
-STATIC mp_obj_t extint_obj_enable(mp_obj_t self_in) {
- extint_obj_t *self = self_in;
- extint_enable(self);
- return mp_const_none;
-}
-STATIC MP_DEFINE_CONST_FUN_OBJ_1(extint_obj_enable_obj, extint_obj_enable);
-
-/// \method disable()
-/// Disable the interrupt associated with the ExtInt object.
-/// This could be useful for debouncing.
-STATIC mp_obj_t extint_obj_disable(mp_obj_t self_in) {
- extint_obj_t *self = self_in;
- extint_disable(self);
- return mp_const_none;
-}
-STATIC MP_DEFINE_CONST_FUN_OBJ_1(extint_obj_disable_obj, extint_obj_disable);
-
-/// \method swint()
-/// Trigger the callback from software.
-STATIC mp_obj_t extint_obj_swint(mp_obj_t self_in) {
- extint_obj_t *self = self_in;
- extint_swint(self);
- return mp_const_none;
-}
-STATIC MP_DEFINE_CONST_FUN_OBJ_1(extint_obj_swint_obj, extint_obj_swint);
-
-/// \classmethod \constructor(pin, mode, pull, callback)
-/// Create an ExtInt object:
-///
-/// - `pin` is the pin on which to enable the interrupt (can be a pin object or any valid pin name).
-/// - `mode` can be one of:
-/// - `ExtInt.IRQ_RISING` - trigger on a rising edge;
-/// - `ExtInt.IRQ_FALLING` - trigger on a falling edge;
-/// - `ExtInt.IRQ_RISING_FALLING` - trigger on a rising or falling edge.
-/// - `pull` can be one of:
-/// - `pyb.Pin.PULL_NONE` - no pull up or down resistors;
-/// - `pyb.Pin.PULL_UP` - enable the pull-up resistor;
-/// - `pyb.Pin.PULL_DOWN` - enable the pull-down resistor.
-/// - `callback` is the function to call when the interrupt triggers. The
-/// callback function must accept exactly 1 argument, which is the line that
-/// triggered the interrupt.
-STATIC const mp_arg_t pyb_extint_make_new_args[] = {
- { MP_QSTR_pin, MP_ARG_REQUIRED | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
- { MP_QSTR_mode, MP_ARG_REQUIRED | MP_ARG_INT, {.u_int = 0} },
- { MP_QSTR_pull, MP_ARG_REQUIRED | MP_ARG_INT, {.u_int = 0} },
- { MP_QSTR_callback, MP_ARG_REQUIRED | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
-};
-#define PYB_EXTINT_MAKE_NEW_NUM_ARGS MP_ARRAY_SIZE(pyb_extint_make_new_args)
-
-STATIC mp_obj_t extint_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
- // parse args
- mp_arg_val_t vals[PYB_EXTINT_MAKE_NEW_NUM_ARGS];
- mp_arg_parse_all_kw_array(n_args, n_kw, args, PYB_EXTINT_MAKE_NEW_NUM_ARGS, pyb_extint_make_new_args, vals);
-
- extint_obj_t *self = extint_register(vals[0].u_obj, vals[1].u_int, vals[2].u_int, vals[3].u_obj);
- self->base.type = type_in;
-
- return self;
-}
-
-STATIC void extint_obj_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) {
- extint_obj_t *self = self_in;
- print(env, "<ExtInt pin=%u>", self->pin_num);
-}
-
-STATIC const mp_map_elem_t extint_locals_dict_table[] = {
- { MP_OBJ_NEW_QSTR(MP_QSTR_pin), (mp_obj_t)&extint_obj_pin_obj },
- { MP_OBJ_NEW_QSTR(MP_QSTR_enable), (mp_obj_t)&extint_obj_enable_obj },
- { MP_OBJ_NEW_QSTR(MP_QSTR_disable), (mp_obj_t)&extint_obj_disable_obj },
- { MP_OBJ_NEW_QSTR(MP_QSTR_swint), (mp_obj_t)&extint_obj_swint_obj },
-
- // class constants
- /// \constant IRQ_RISING - interrupt on a rising edge
- /// \constant IRQ_FALLING - interrupt on a falling edge
- /// \constant IRQ_RISING_FALLING - interrupt on a rising or falling edge
- /// \constant IRQ_LOW_LEVEL - interrupt on a low level
- /// \constant IRQ_HIGH_LEVEL - interrupt on a high level
- { MP_OBJ_NEW_QSTR(MP_QSTR_IRQ_FALLING), MP_OBJ_NEW_SMALL_INT(GPIO_FALLING_EDGE) },
- { MP_OBJ_NEW_QSTR(MP_QSTR_IRQ_RISING), MP_OBJ_NEW_SMALL_INT(GPIO_RISING_EDGE) },
- { MP_OBJ_NEW_QSTR(MP_QSTR_IRQ_RISING_FALLING), MP_OBJ_NEW_SMALL_INT(GPIO_BOTH_EDGES) },
- { MP_OBJ_NEW_QSTR(MP_QSTR_IRQ_LOW_LEVEL), MP_OBJ_NEW_SMALL_INT(GPIO_LOW_LEVEL) },
- { MP_OBJ_NEW_QSTR(MP_QSTR_IRQ_HIGH_LEVEL), MP_OBJ_NEW_SMALL_INT(GPIO_HIGH_LEVEL) },
-};
-
-STATIC MP_DEFINE_CONST_DICT(extint_locals_dict, extint_locals_dict_table);
-
-STATIC void ExecuteIntCallback (extint_obj_t *self) {
- if (self->callback != mp_const_none) {
- // disable interrupts to avoid nesting
- uint primsk = disable_irq();
- // when executing code within a handler we must lock the GC to prevent
- // any memory allocations. We must also catch any exceptions.
- gc_lock();
- nlr_buf_t nlr;
- if (nlr_push(&nlr) == 0) {
- mp_call_function_1(self->callback, self);
- nlr_pop();
- } else {
- // uncaught exception; disable the callback so it doesn't run again
- self->callback = mp_const_none;
- extint_disable(self);
- // printing an exception here will cause a stack overflow that ends up in a
- // hard fault so, is better to signal the uncaught (probably non-recoverable)
- // exception by blinkg the system led
- mperror_signal_error();
- }
- gc_unlock();
- enable_irq(primsk);
- }
-}
-
-STATIC void GPIOA0IntHandler (void) {
- EXTI_Handler(GPIOA0_BASE);
-}
-
-STATIC void GPIOA1IntHandler (void) {
- EXTI_Handler(GPIOA1_BASE);
-}
-
-STATIC void GPIOA2IntHandler (void) {
- EXTI_Handler(GPIOA2_BASE);
-}
-
-STATIC void GPIOA3IntHandler (void) {
- EXTI_Handler(GPIOA3_BASE);
-}
-
-// common interrupt handler
-STATIC void EXTI_Handler(uint port) {
- extint_obj_t *self;
- uint32_t bit = MAP_GPIOIntStatus(port, true);
-
- MAP_GPIOIntClear(port, bit);
- if (NULL != (self = extint_find(port, bit))) {
- ExecuteIntCallback(self);
- }
-}
-
-const mp_obj_type_t extint_type = {
- { &mp_type_type },
- .name = MP_QSTR_ExtInt,
- .print = extint_obj_print,
- .make_new = extint_make_new,
- .locals_dict = (mp_obj_t)&extint_locals_dict,
-};
-
-void extint_init0(void) {
- mp_obj_list_init(&MP_STATE_PORT(pyb_extint_list), 0);
-}
-
-extint_obj_t* extint_register(mp_obj_t pin_obj, uint32_t intmode, uint32_t pull, mp_obj_t callback) {
- const pin_obj_t *pin;
- extint_obj_t* self;
- void *handler;
- uint32_t intnum;
-
- pin = pin_find(pin_obj);
-
- if (intmode != GPIO_FALLING_EDGE &&
- intmode != GPIO_RISING_EDGE &&
- intmode != GPIO_BOTH_EDGES &&
- intmode != GPIO_LOW_LEVEL &&
- intmode != GPIO_HIGH_LEVEL) {
- nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_invalid_arguments));
- }
- if (pull != PIN_TYPE_STD &&
- pull != PIN_TYPE_STD_PU &&
- pull != PIN_TYPE_STD_PD &&
- pull != PIN_TYPE_OD &&
- pull != PIN_TYPE_OD_PU &&
- pull != PIN_TYPE_OD_PD) {
- nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_invalid_arguments));
- }
-
- if (NULL == (self = extint_find(pin->port, pin->bit))) {
- self = extint_add(pin->pin_num, pin->port, pin->bit);
- }
- else {
- // we need to update the callback atomically, so we disable the line
- // before we update anything.
- extint_disable(self);
- }
-
- // invalidate the callback
- self->callback = NULL;
-
- // before enabling the interrupt, configure the gpio pin
- pin_config ((pin_obj_t *)pin, PIN_MODE_0, GPIO_DIR_MODE_IN, pull, PIN_STRENGTH_4MA);
-
- MAP_GPIOIntTypeSet(pin->port, pin->bit, intmode);
- switch (pin->port) {
- case GPIOA0_BASE:
- handler = GPIOA0IntHandler;
- intnum = INT_GPIOA0;
- break;
- case GPIOA1_BASE:
- handler = GPIOA1IntHandler;
- intnum = INT_GPIOA1;
- break;
- case GPIOA2_BASE:
- handler = GPIOA2IntHandler;
- intnum = INT_GPIOA2;
- break;
- case GPIOA3_BASE:
- default:
- handler = GPIOA3IntHandler;
- intnum = INT_GPIOA3;
- break;
- }
-
- MAP_GPIOIntRegister(pin->port, handler);
- // set the interrupt to the lowest priority, to make sure that no ther
- // isr will be preemted by this one
- MAP_IntPrioritySet(intnum, INT_PRIORITY_LVL_7);
-
- // set the new callback
- self->callback = callback;
- // enable the interrupt just before leaving
- extint_enable(self);
-
- return self;
-}
-
-void extint_enable(extint_obj_t *self) {
- MAP_GPIOIntClear(self->port, self->bit);
- MAP_GPIOIntEnable(self->port, self->bit);
-}
-
-void extint_disable(extint_obj_t *self) {
- MAP_GPIOIntDisable(self->port, self->bit);
-}
-
-void extint_swint(extint_obj_t *self) {
- ExecuteIntCallback(self);
-}
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