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diff --git a/stmhal/led.c b/stmhal/led.c
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-/*
- * This file is part of the MicroPython project, http://micropython.org/
- *
- * The MIT License (MIT)
- *
- * Copyright (c) 2013-2016 Damien P. George
- *
- * 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 "py/nlr.h"
-#include "py/runtime.h"
-#include "py/mphal.h"
-#include "timer.h"
-#include "led.h"
-#include "pin.h"
-#include "genhdr/pins.h"
-
-#if defined(MICROPY_HW_LED1)
-
-/// \moduleref pyb
-/// \class LED - LED object
-///
-/// The LED object controls an individual LED (Light Emitting Diode).
-
-// the default is that LEDs are not inverted, and pin driven high turns them on
-#ifndef MICROPY_HW_LED_INVERTED
-#define MICROPY_HW_LED_INVERTED (0)
-#endif
-
-typedef struct _pyb_led_obj_t {
- mp_obj_base_t base;
- mp_uint_t led_id;
- const pin_obj_t *led_pin;
-} pyb_led_obj_t;
-
-STATIC const pyb_led_obj_t pyb_led_obj[] = {
- {{&pyb_led_type}, 1, &MICROPY_HW_LED1},
-#if defined(MICROPY_HW_LED2)
- {{&pyb_led_type}, 2, &MICROPY_HW_LED2},
-#if defined(MICROPY_HW_LED3)
- {{&pyb_led_type}, 3, &MICROPY_HW_LED3},
-#if defined(MICROPY_HW_LED4)
- {{&pyb_led_type}, 4, &MICROPY_HW_LED4},
-#endif
-#endif
-#endif
-};
-#define NUM_LEDS MP_ARRAY_SIZE(pyb_led_obj)
-
-void led_init(void) {
- /* Turn off LEDs and initialize */
- for (int led = 0; led < NUM_LEDS; led++) {
- const pin_obj_t *led_pin = pyb_led_obj[led].led_pin;
- mp_hal_gpio_clock_enable(led_pin->gpio);
- MICROPY_HW_LED_OFF(led_pin);
- mp_hal_pin_output(led_pin);
- }
-}
-
-#if defined(MICROPY_HW_LED1_PWM) \
- || defined(MICROPY_HW_LED2_PWM) \
- || defined(MICROPY_HW_LED3_PWM) \
- || defined(MICROPY_HW_LED4_PWM)
-
-// The following is semi-generic code to control LEDs using PWM.
-// It currently supports TIM1, TIM2 and TIM3, channels 1-4.
-// Configure by defining the relevant MICROPY_HW_LEDx_PWM macros in mpconfigboard.h.
-// If they are not defined then PWM will not be available for that LED.
-
-#define LED_PWM_ENABLED (1)
-
-#ifndef MICROPY_HW_LED1_PWM
-#define MICROPY_HW_LED1_PWM { NULL, 0, 0, 0 }
-#endif
-#ifndef MICROPY_HW_LED2_PWM
-#define MICROPY_HW_LED2_PWM { NULL, 0, 0, 0 }
-#endif
-#ifndef MICROPY_HW_LED3_PWM
-#define MICROPY_HW_LED3_PWM { NULL, 0, 0, 0 }
-#endif
-#ifndef MICROPY_HW_LED4_PWM
-#define MICROPY_HW_LED4_PWM { NULL, 0, 0, 0 }
-#endif
-
-#define LED_PWM_TIM_PERIOD (10000) // TIM runs at 1MHz and fires every 10ms
-
-// this gives the address of the CCR register for channels 1-4
-#define LED_PWM_CCR(pwm_cfg) ((volatile uint32_t*)&(pwm_cfg)->tim->CCR1 + ((pwm_cfg)->tim_channel >> 2))
-
-typedef struct _led_pwm_config_t {
- TIM_TypeDef *tim;
- uint8_t tim_id;
- uint8_t tim_channel;
- uint8_t alt_func;
-} led_pwm_config_t;
-
-STATIC const led_pwm_config_t led_pwm_config[] = {
- MICROPY_HW_LED1_PWM,
- MICROPY_HW_LED2_PWM,
- MICROPY_HW_LED3_PWM,
- MICROPY_HW_LED4_PWM,
-};
-
-STATIC uint8_t led_pwm_state = 0;
-
-static inline bool led_pwm_is_enabled(int led) {
- return (led_pwm_state & (1 << led)) != 0;
-}
-
-// this function has a large stack so it should not be inlined
-STATIC void led_pwm_init(int led) __attribute__((noinline));
-STATIC void led_pwm_init(int led) {
- const pin_obj_t *led_pin = pyb_led_obj[led - 1].led_pin;
- const led_pwm_config_t *pwm_cfg = &led_pwm_config[led - 1];
-
- // GPIO configuration
- mp_hal_pin_config(led_pin, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, pwm_cfg->alt_func);
-
- // TIM configuration
- switch (pwm_cfg->tim_id) {
- case 1: __TIM1_CLK_ENABLE(); break;
- case 2: __TIM2_CLK_ENABLE(); break;
- case 3: __TIM3_CLK_ENABLE(); break;
- default: assert(0);
- }
- TIM_HandleTypeDef tim = {0};
- tim.Instance = pwm_cfg->tim;
- tim.Init.Period = LED_PWM_TIM_PERIOD - 1;
- tim.Init.Prescaler = timer_get_source_freq(pwm_cfg->tim_id) / 1000000 - 1; // TIM runs at 1MHz
- tim.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
- tim.Init.CounterMode = TIM_COUNTERMODE_UP;
- tim.Init.RepetitionCounter = 0;
- HAL_TIM_PWM_Init(&tim);
-
- // PWM configuration
- TIM_OC_InitTypeDef oc_init;
- oc_init.OCMode = TIM_OCMODE_PWM1;
- oc_init.Pulse = 0; // off
- oc_init.OCPolarity = MICROPY_HW_LED_INVERTED ? TIM_OCPOLARITY_LOW : TIM_OCPOLARITY_HIGH;
- oc_init.OCFastMode = TIM_OCFAST_DISABLE;
- oc_init.OCNPolarity = TIM_OCNPOLARITY_HIGH; // needed for TIM1 and TIM8
- oc_init.OCIdleState = TIM_OCIDLESTATE_SET; // needed for TIM1 and TIM8
- oc_init.OCNIdleState = TIM_OCNIDLESTATE_SET; // needed for TIM1 and TIM8
- HAL_TIM_PWM_ConfigChannel(&tim, &oc_init, pwm_cfg->tim_channel);
- HAL_TIM_PWM_Start(&tim, pwm_cfg->tim_channel);
-
- // indicate that this LED is using PWM
- led_pwm_state |= 1 << led;
-}
-
-STATIC void led_pwm_deinit(int led) {
- // make the LED's pin a standard GPIO output pin
- const pin_obj_t *led_pin = pyb_led_obj[led - 1].led_pin;
- GPIO_TypeDef *g = led_pin->gpio;
- uint32_t pin = led_pin->pin;
- static const int mode = 1; // output
- static const int alt = 0; // no alt func
- g->MODER = (g->MODER & ~(3 << (2 * pin))) | (mode << (2 * pin));
- g->AFR[pin >> 3] = (g->AFR[pin >> 3] & ~(15 << (4 * (pin & 7)))) | (alt << (4 * (pin & 7)));
- led_pwm_state &= ~(1 << led);
-}
-
-#else
-#define LED_PWM_ENABLED (0)
-#endif
-
-void led_state(pyb_led_t led, int state) {
- if (led < 1 || led > NUM_LEDS) {
- return;
- }
-
- const pin_obj_t *led_pin = pyb_led_obj[led - 1].led_pin;
- //printf("led_state(%d,%d)\n", led, state);
- if (state == 0) {
- // turn LED off
- MICROPY_HW_LED_OFF(led_pin);
- } else {
- // turn LED on
- MICROPY_HW_LED_ON(led_pin);
- }
-
- #if LED_PWM_ENABLED
- if (led_pwm_is_enabled(led)) {
- led_pwm_deinit(led);
- }
- #endif
-}
-
-void led_toggle(pyb_led_t led) {
- if (led < 1 || led > NUM_LEDS) {
- return;
- }
-
- #if LED_PWM_ENABLED
- if (led_pwm_is_enabled(led)) {
- // if PWM is enabled then LED has non-zero intensity, so turn it off
- led_state(led, 0);
- return;
- }
- #endif
-
- // toggle the output data register to toggle the LED state
- const pin_obj_t *led_pin = pyb_led_obj[led - 1].led_pin;
- led_pin->gpio->ODR ^= led_pin->pin_mask;
-}
-
-int led_get_intensity(pyb_led_t led) {
- if (led < 1 || led > NUM_LEDS) {
- return 0;
- }
-
- #if LED_PWM_ENABLED
- if (led_pwm_is_enabled(led)) {
- const led_pwm_config_t *pwm_cfg = &led_pwm_config[led - 1];
- mp_uint_t i = (*LED_PWM_CCR(pwm_cfg) * 255 + LED_PWM_TIM_PERIOD - 2) / (LED_PWM_TIM_PERIOD - 1);
- if (i > 255) {
- i = 255;
- }
- return i;
- }
- #endif
-
- const pin_obj_t *led_pin = pyb_led_obj[led - 1].led_pin;
- GPIO_TypeDef *gpio = led_pin->gpio;
-
- if (gpio->ODR & led_pin->pin_mask) {
- // pin is high
- return MICROPY_HW_LED_INVERTED ? 0 : 255;
- } else {
- // pin is low
- return MICROPY_HW_LED_INVERTED ? 255 : 0;
- }
-}
-
-void led_set_intensity(pyb_led_t led, mp_int_t intensity) {
- #if LED_PWM_ENABLED
- if (intensity > 0 && intensity < 255) {
- const led_pwm_config_t *pwm_cfg = &led_pwm_config[led - 1];
- if (pwm_cfg->tim != NULL) {
- // set intensity using PWM pulse width
- if (!led_pwm_is_enabled(led)) {
- led_pwm_init(led);
- }
- *LED_PWM_CCR(pwm_cfg) = intensity * (LED_PWM_TIM_PERIOD - 1) / 255;
- return;
- }
- }
- #endif
-
- // intensity not supported for this LED; just turn it on/off
- led_state(led, intensity > 0);
-}
-
-void led_debug(int n, int delay) {
- led_state(1, n & 1);
- led_state(2, n & 2);
- led_state(3, n & 4);
- led_state(4, n & 8);
- mp_hal_delay_ms(delay);
-}
-
-/******************************************************************************/
-/* MicroPython bindings */
-
-void led_obj_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
- pyb_led_obj_t *self = self_in;
- mp_printf(print, "LED(%lu)", self->led_id);
-}
-
-/// \classmethod \constructor(id)
-/// Create an LED object associated with the given LED:
-///
-/// - `id` is the LED number, 1-4.
-STATIC mp_obj_t led_obj_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
- // check arguments
- mp_arg_check_num(n_args, n_kw, 1, 1, false);
-
- // get led number
- mp_int_t led_id = mp_obj_get_int(args[0]);
-
- // check led number
- if (!(1 <= led_id && led_id <= NUM_LEDS)) {
- nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "LED(%d) doesn't exist", led_id));
- }
-
- // return static led object
- return (mp_obj_t)&pyb_led_obj[led_id - 1];
-}
-
-/// \method on()
-/// Turn the LED on.
-mp_obj_t led_obj_on(mp_obj_t self_in) {
- pyb_led_obj_t *self = self_in;
- led_state(self->led_id, 1);
- return mp_const_none;
-}
-
-/// \method off()
-/// Turn the LED off.
-mp_obj_t led_obj_off(mp_obj_t self_in) {
- pyb_led_obj_t *self = self_in;
- led_state(self->led_id, 0);
- return mp_const_none;
-}
-
-/// \method toggle()
-/// Toggle the LED between on and off.
-mp_obj_t led_obj_toggle(mp_obj_t self_in) {
- pyb_led_obj_t *self = self_in;
- led_toggle(self->led_id);
- return mp_const_none;
-}
-
-/// \method intensity([value])
-/// Get or set the LED intensity. Intensity ranges between 0 (off) and 255 (full on).
-/// If no argument is given, return the LED intensity.
-/// If an argument is given, set the LED intensity and return `None`.
-mp_obj_t led_obj_intensity(size_t n_args, const mp_obj_t *args) {
- pyb_led_obj_t *self = args[0];
- if (n_args == 1) {
- return mp_obj_new_int(led_get_intensity(self->led_id));
- } else {
- led_set_intensity(self->led_id, mp_obj_get_int(args[1]));
- return mp_const_none;
- }
-}
-
-STATIC MP_DEFINE_CONST_FUN_OBJ_1(led_obj_on_obj, led_obj_on);
-STATIC MP_DEFINE_CONST_FUN_OBJ_1(led_obj_off_obj, led_obj_off);
-STATIC MP_DEFINE_CONST_FUN_OBJ_1(led_obj_toggle_obj, led_obj_toggle);
-STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(led_obj_intensity_obj, 1, 2, led_obj_intensity);
-
-STATIC const mp_rom_map_elem_t led_locals_dict_table[] = {
- { MP_ROM_QSTR(MP_QSTR_on), MP_ROM_PTR(&led_obj_on_obj) },
- { MP_ROM_QSTR(MP_QSTR_off), MP_ROM_PTR(&led_obj_off_obj) },
- { MP_ROM_QSTR(MP_QSTR_toggle), MP_ROM_PTR(&led_obj_toggle_obj) },
- { MP_ROM_QSTR(MP_QSTR_intensity), MP_ROM_PTR(&led_obj_intensity_obj) },
-};
-
-STATIC MP_DEFINE_CONST_DICT(led_locals_dict, led_locals_dict_table);
-
-const mp_obj_type_t pyb_led_type = {
- { &mp_type_type },
- .name = MP_QSTR_LED,
- .print = led_obj_print,
- .make_new = led_obj_make_new,
- .locals_dict = (mp_obj_dict_t*)&led_locals_dict,
-};
-
-#else
-// For boards with no LEDs, we leave an empty function here so that we don't
-// have to put conditionals everywhere.
-void led_init(void) {
-}
-void led_state(pyb_led_t led, int state) {
-}
-void led_toggle(pyb_led_t led) {
-}
-#endif // defined(MICROPY_HW_LED1)
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