2014-05-03 23:27:38 +01:00
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/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013, 2014 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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2014-03-13 01:06:26 +00:00
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#include <stdio.h>
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2015-07-28 16:36:26 +01:00
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#include STM32_HAL_H
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2014-03-13 01:06:26 +00:00
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2015-01-01 21:06:20 +00:00
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#include "py/nlr.h"
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#include "py/runtime.h"
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2014-04-02 15:09:36 +01:00
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#include "timer.h"
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2014-03-13 01:06:26 +00:00
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#include "led.h"
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#include "pin.h"
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2014-04-17 18:03:27 +01:00
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#include "genhdr/pins.h"
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2014-03-13 01:06:26 +00:00
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2015-01-16 05:45:21 +00:00
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#if defined(MICROPY_HW_LED1)
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2015-02-22 17:54:07 +00:00
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// default is to not PWM LED4
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#if !defined(MICROPY_HW_LED4_PWM)
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#define MICROPY_HW_LED4_PWM (0)
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#endif
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2014-04-29 22:55:34 +01:00
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/// \moduleref pyb
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/// \class LED - LED object
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///
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/// The LED object controls an individual LED (Light Emitting Diode).
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2014-04-01 18:20:52 +01:00
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typedef struct _pyb_led_obj_t {
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mp_obj_base_t base;
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2014-07-03 13:25:24 +01:00
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mp_uint_t led_id;
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2014-04-01 18:20:52 +01:00
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const pin_obj_t *led_pin;
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} pyb_led_obj_t;
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STATIC const pyb_led_obj_t pyb_led_obj[] = {
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{{&pyb_led_type}, 1, &MICROPY_HW_LED1},
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2014-03-30 12:30:35 +01:00
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#if defined(MICROPY_HW_LED2)
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2014-04-01 18:20:52 +01:00
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{{&pyb_led_type}, 2, &MICROPY_HW_LED2},
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2014-03-30 12:30:35 +01:00
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#if defined(MICROPY_HW_LED3)
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2014-04-01 18:20:52 +01:00
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{{&pyb_led_type}, 3, &MICROPY_HW_LED3},
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2014-03-30 12:30:35 +01:00
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#if defined(MICROPY_HW_LED4)
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2014-04-01 18:20:52 +01:00
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{{&pyb_led_type}, 4, &MICROPY_HW_LED4},
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2014-03-13 01:06:26 +00:00
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#endif
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#endif
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#endif
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};
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2014-06-19 17:54:34 +01:00
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#define NUM_LEDS MP_ARRAY_SIZE(pyb_led_obj)
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2014-03-13 01:06:26 +00:00
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void led_init(void) {
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/* GPIO structure */
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GPIO_InitTypeDef GPIO_InitStructure;
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/* Configure I/O speed, mode, output type and pull */
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GPIO_InitStructure.Speed = GPIO_SPEED_LOW;
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2014-03-30 12:30:35 +01:00
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GPIO_InitStructure.Mode = MICROPY_HW_LED_OTYPE;
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2014-03-13 01:06:26 +00:00
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GPIO_InitStructure.Pull = GPIO_NOPULL;
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/* Turn off LEDs and initialize */
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for (int led = 0; led < NUM_LEDS; led++) {
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2014-04-01 18:20:52 +01:00
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const pin_obj_t *led_pin = pyb_led_obj[led].led_pin;
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MICROPY_HW_LED_OFF(led_pin);
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GPIO_InitStructure.Pin = led_pin->pin_mask;
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HAL_GPIO_Init(led_pin->gpio, &GPIO_InitStructure);
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2014-03-13 01:06:26 +00:00
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}
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2014-03-22 23:54:13 +00:00
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2015-02-22 17:54:07 +00:00
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#if MICROPY_HW_LED4_PWM
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2014-03-22 23:54:13 +00:00
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// LED4 (blue) is on PB4 which is TIM3_CH1
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// we use PWM on this channel to fade the LED
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2014-04-02 15:09:36 +01:00
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// LED3 (yellow) is on PA15 which has TIM2_CH1, so we could PWM that as well
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2014-03-22 23:54:13 +00:00
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// GPIO configuration
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2014-03-30 12:30:35 +01:00
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GPIO_InitStructure.Pin = MICROPY_HW_LED4.pin_mask;
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2014-03-22 23:54:13 +00:00
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GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
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GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
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GPIO_InitStructure.Pull = GPIO_NOPULL;
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GPIO_InitStructure.Alternate = GPIO_AF2_TIM3;
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2014-03-30 12:30:35 +01:00
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HAL_GPIO_Init(MICROPY_HW_LED4.gpio, &GPIO_InitStructure);
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2014-03-22 23:54:13 +00:00
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// PWM mode configuration
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TIM_OC_InitTypeDef oc_init;
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oc_init.OCMode = TIM_OCMODE_PWM1;
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oc_init.Pulse = 0; // off
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oc_init.OCPolarity = TIM_OCPOLARITY_HIGH;
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oc_init.OCFastMode = TIM_OCFAST_DISABLE;
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HAL_TIM_PWM_ConfigChannel(&TIM3_Handle, &oc_init, TIM_CHANNEL_1);
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// start PWM
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TIM_CCxChannelCmd(TIM3, TIM_CHANNEL_1, TIM_CCx_ENABLE);
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2015-02-22 17:54:07 +00:00
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#endif
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2014-03-13 01:06:26 +00:00
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}
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void led_state(pyb_led_t led, int state) {
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if (led < 1 || led > NUM_LEDS) {
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return;
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}
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2015-02-22 17:54:07 +00:00
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if (MICROPY_HW_LED4_PWM && led == 4) {
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2014-03-22 23:54:13 +00:00
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if (state) {
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TIM3->CCR1 = 0xffff;
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} else {
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TIM3->CCR1 = 0;
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}
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return;
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}
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2014-04-01 18:20:52 +01:00
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const pin_obj_t *led_pin = pyb_led_obj[led - 1].led_pin;
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2014-03-23 00:25:09 +00:00
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//printf("led_state(%d,%d)\n", led, state);
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2014-03-13 01:06:26 +00:00
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if (state == 0) {
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// turn LED off
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2014-03-30 12:30:35 +01:00
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MICROPY_HW_LED_OFF(led_pin);
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2014-03-13 01:06:26 +00:00
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} else {
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// turn LED on
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2014-03-30 12:30:35 +01:00
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MICROPY_HW_LED_ON(led_pin);
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2014-03-13 01:06:26 +00:00
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}
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}
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void led_toggle(pyb_led_t led) {
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if (led < 1 || led > NUM_LEDS) {
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return;
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}
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2014-03-23 00:25:09 +00:00
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2015-02-22 17:54:07 +00:00
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if (MICROPY_HW_LED4_PWM && led == 4) {
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2014-03-23 00:25:09 +00:00
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if (TIM3->CCR1 == 0) {
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TIM3->CCR1 = 0xffff;
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} else {
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TIM3->CCR1 = 0;
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}
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return;
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}
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2014-06-17 19:57:17 +01:00
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// toggle the output data register to toggle the LED state
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2014-04-01 18:20:52 +01:00
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const pin_obj_t *led_pin = pyb_led_obj[led - 1].led_pin;
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2014-06-17 19:57:17 +01:00
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led_pin->gpio->ODR ^= led_pin->pin_mask;
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2014-03-13 01:06:26 +00:00
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}
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2014-03-23 00:25:09 +00:00
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int led_get_intensity(pyb_led_t led) {
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2014-03-22 23:54:13 +00:00
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if (led < 1 || led > NUM_LEDS) {
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return 0;
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}
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2014-03-23 00:25:09 +00:00
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2015-02-22 17:54:07 +00:00
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if (MICROPY_HW_LED4_PWM && led == 4) {
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2014-07-03 13:25:24 +01:00
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mp_uint_t i = (TIM3->CCR1 * 255 + (USBD_CDC_POLLING_INTERVAL*1000) - 2) / ((USBD_CDC_POLLING_INTERVAL*1000) - 1);
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2014-03-23 00:25:09 +00:00
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if (i > 255) {
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i = 255;
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}
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return i;
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}
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2014-04-01 18:20:52 +01:00
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const pin_obj_t *led_pin = pyb_led_obj[led - 1].led_pin;
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2014-03-22 23:54:13 +00:00
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GPIO_TypeDef *gpio = led_pin->gpio;
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// TODO convert high/low to on/off depending on board
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if (gpio->ODR & led_pin->pin_mask) {
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// pin is high
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2014-03-23 00:25:09 +00:00
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return 255;
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2014-03-22 23:54:13 +00:00
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} else {
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// pin is low
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return 0;
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}
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}
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2014-07-03 13:25:24 +01:00
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void led_set_intensity(pyb_led_t led, mp_int_t intensity) {
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2015-02-22 17:54:07 +00:00
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if (MICROPY_HW_LED4_PWM && led == 4) {
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2014-03-23 00:25:09 +00:00
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// set intensity using PWM pulse width
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if (intensity < 0) {
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intensity = 0;
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} else if (intensity >= 255) {
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intensity = 0xffff;
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} else {
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intensity = intensity * ((USBD_CDC_POLLING_INTERVAL*1000) - 1) / 255;
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}
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TIM3->CCR1 = intensity;
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return;
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}
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// intensity not supported for this LED; just turn it on/off
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led_state(led, intensity > 0);
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}
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2014-03-20 23:33:30 +00:00
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void led_debug(int n, int delay) {
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led_state(1, n & 1);
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led_state(2, n & 2);
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led_state(3, n & 4);
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led_state(4, n & 8);
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HAL_Delay(delay);
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}
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2014-03-13 01:06:26 +00:00
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/******************************************************************************/
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/* Micro Python bindings */
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2015-04-09 23:56:15 +01:00
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void led_obj_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
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2014-03-13 01:06:26 +00:00
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pyb_led_obj_t *self = self_in;
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2015-04-09 23:56:15 +01:00
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mp_printf(print, "LED(%lu)", self->led_id);
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2014-03-13 01:06:26 +00:00
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}
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2014-04-29 22:55:34 +01:00
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/// \classmethod \constructor(id)
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/// Create an LED object associated with the given LED:
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///
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/// - `id` is the LED number, 1-4.
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2014-08-30 00:35:11 +01:00
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STATIC mp_obj_t led_obj_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
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2014-03-24 11:48:39 +00:00
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// check arguments
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2014-04-20 00:16:30 +01:00
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mp_arg_check_num(n_args, n_kw, 1, 1, false);
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2014-03-24 11:48:39 +00:00
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// get led number
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2014-07-03 13:25:24 +01:00
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mp_int_t led_id = mp_obj_get_int(args[0]);
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2014-03-24 11:48:39 +00:00
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// check led number
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2014-04-30 19:23:21 +01:00
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if (!(1 <= led_id && led_id <= NUM_LEDS)) {
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2015-04-11 21:50:53 +01:00
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nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "LED(%d) does not exist", led_id));
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2014-03-24 11:48:39 +00:00
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}
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// return static led object
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2014-04-30 19:23:21 +01:00
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return (mp_obj_t)&pyb_led_obj[led_id - 1];
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2014-03-24 11:48:39 +00:00
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}
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2014-04-29 22:55:34 +01:00
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/// \method on()
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/// Turn the LED on.
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2014-03-13 01:06:26 +00:00
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mp_obj_t led_obj_on(mp_obj_t self_in) {
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pyb_led_obj_t *self = self_in;
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led_state(self->led_id, 1);
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return mp_const_none;
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}
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2014-04-29 22:55:34 +01:00
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/// \method off()
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/// Turn the LED off.
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2014-03-13 01:06:26 +00:00
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mp_obj_t led_obj_off(mp_obj_t self_in) {
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pyb_led_obj_t *self = self_in;
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led_state(self->led_id, 0);
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return mp_const_none;
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}
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2014-04-29 22:55:34 +01:00
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/// \method toggle()
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/// Toggle the LED between on and off.
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2014-03-13 01:06:26 +00:00
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mp_obj_t led_obj_toggle(mp_obj_t self_in) {
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pyb_led_obj_t *self = self_in;
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led_toggle(self->led_id);
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return mp_const_none;
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}
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2014-04-29 22:55:34 +01:00
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/// \method intensity([value])
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/// Get or set the LED intensity. Intensity ranges between 0 (off) and 255 (full on).
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/// If no argument is given, return the LED intensity.
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/// If an argument is given, set the LED intensity and return `None`.
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2014-08-30 00:35:11 +01:00
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mp_obj_t led_obj_intensity(mp_uint_t n_args, const mp_obj_t *args) {
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2014-03-22 23:54:13 +00:00
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pyb_led_obj_t *self = args[0];
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2014-03-23 00:25:09 +00:00
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if (n_args == 1) {
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return mp_obj_new_int(led_get_intensity(self->led_id));
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2014-03-22 23:54:13 +00:00
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} else {
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2014-03-23 00:25:09 +00:00
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led_set_intensity(self->led_id, mp_obj_get_int(args[1]));
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2014-03-22 23:54:13 +00:00
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return mp_const_none;
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}
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(led_obj_on_obj, led_obj_on);
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(led_obj_off_obj, led_obj_off);
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(led_obj_toggle_obj, led_obj_toggle);
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2014-03-23 00:25:09 +00:00
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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(led_obj_intensity_obj, 1, 2, led_obj_intensity);
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2014-03-13 01:06:26 +00:00
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2014-03-26 21:47:19 +00:00
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STATIC const mp_map_elem_t led_locals_dict_table[] = {
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{ MP_OBJ_NEW_QSTR(MP_QSTR_on), (mp_obj_t)&led_obj_on_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_off), (mp_obj_t)&led_obj_off_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_toggle), (mp_obj_t)&led_obj_toggle_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_intensity), (mp_obj_t)&led_obj_intensity_obj },
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2014-03-13 01:06:26 +00:00
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};
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2014-03-26 21:47:19 +00:00
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STATIC MP_DEFINE_CONST_DICT(led_locals_dict, led_locals_dict_table);
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2014-03-24 11:48:39 +00:00
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const mp_obj_type_t pyb_led_type = {
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2014-03-13 01:06:26 +00:00
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{ &mp_type_type },
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2014-04-19 00:54:33 +01:00
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.name = MP_QSTR_LED,
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2014-03-13 01:06:26 +00:00
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.print = led_obj_print,
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2014-03-24 11:48:39 +00:00
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.make_new = led_obj_make_new,
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2014-03-26 21:47:19 +00:00
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.locals_dict = (mp_obj_t)&led_locals_dict,
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2014-03-13 01:06:26 +00:00
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};
|
2015-01-16 05:45:21 +00:00
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#else
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// For boards with no LEDs, we leave an empty function here so that we don't
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// have to put conditionals everywhere.
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void led_init(void) {
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}
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void led_state(pyb_led_t led, int state) {
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}
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void led_toggle(pyb_led_t led) {
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}
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#endif // defined(MICROPY_HW_LED1)
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