kopia lustrzana https://github.com/micropython/micropython
stmhal: Add intensity method for blue LED.
As part of this, rejig the way TIM3 is initialised, since it's now shared by USB CDC and the blue LED PWM.pull/364/head
Damien George
rodzic
02fa035800
commit
908a670dfc
85
stmhal/led.c
85
stmhal/led.c
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@ -1,10 +1,13 @@
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#include <stdio.h>
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#include <stm32f4xx_hal.h>
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#include "usbd_cdc_msc.h"
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#include "usbd_cdc_interface.h"
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#include "misc.h"
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#include "mpconfig.h"
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#include "qstr.h"
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#include "obj.h"
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#include "runtime.h"
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#include "led.h"
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#include "pin.h"
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#include "build/pins.h"
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@ -38,12 +41,43 @@ void led_init(void) {
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GPIO_InitStructure.Pin = gLed[led]->pin_mask;
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HAL_GPIO_Init(gLed[led]->gpio, &GPIO_InitStructure);
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}
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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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// GPIO configuration
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GPIO_InitStructure.Pin = GPIO_PIN_4;
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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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HAL_GPIO_Init(GPIOB, &GPIO_InitStructure);
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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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//HAL_TIM_PWM_Start(&USBD_CDC_TIM3_Handle, TIM_CHANNEL_1);
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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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if (led == 4) {
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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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const pin_obj_t *led_pin = gLed[led - 1];
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//printf("led_state(%d,%d)\n", led, state);
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if (state == 0) {
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@ -73,6 +107,23 @@ void led_toggle(pyb_led_t led) {
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}
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}
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int led_get_state(pyb_led_t led) {
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if (led < 1 || led > NUM_LEDS) {
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return 0;
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}
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const pin_obj_t *led_pin = gLed[led - 1];
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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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return 1;
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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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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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@ -112,25 +163,47 @@ mp_obj_t led_obj_toggle(mp_obj_t self_in) {
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return mp_const_none;
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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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mp_obj_t led_obj_state(uint n_args, const mp_obj_t *args) {
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pyb_led_obj_t *self = args[0];
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if (n_args == 0) {
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return MP_BOOL(led_get_state(self->led_id));
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} else {
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led_state(self->led_id, rt_is_true(args[1]));
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return mp_const_none;
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}
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}
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static const mp_method_t led_methods[] = {
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mp_obj_t led_obj_intensity(mp_obj_t self_in, mp_obj_t intensity) {
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pyb_led_obj_t *self = self_in;
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if (self->led_id == 4) {
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TIM3->CCR1 = mp_obj_get_int(intensity);
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}
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return mp_const_none;
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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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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(led_obj_state_obj, 1, 2, led_obj_state);
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STATIC MP_DEFINE_CONST_FUN_OBJ_2(led_obj_intensity_obj, led_obj_intensity);
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STATIC const mp_method_t led_methods[] = {
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{ "on", &led_obj_on_obj },
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{ "off", &led_obj_off_obj },
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{ "toggle", &led_obj_toggle_obj },
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{ "state", &led_obj_state_obj },
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{ "intensity", &led_obj_intensity_obj },
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{ NULL, NULL },
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};
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static const mp_obj_type_t led_obj_type = {
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STATIC const mp_obj_type_t led_obj_type = {
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{ &mp_type_type },
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.name = MP_QSTR_Led,
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.print = led_obj_print,
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.methods = led_methods,
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};
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static mp_obj_t pyb_Led(mp_obj_t led_id) {
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STATIC mp_obj_t pyb_Led(mp_obj_t led_id) {
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pyb_led_obj_t *o = m_new_obj(pyb_led_obj_t);
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o->base.type = &led_obj_type;
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o->led_id = mp_obj_get_int(led_id);
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@ -37,10 +37,10 @@
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#include "lcd.h"
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#include "accel.h"
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#include "servo.h"
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#include "pin.h"
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#if 0
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#include "timer.h"
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#include "pybwlan.h"
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#include "pin.h"
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#endif
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void SystemClock_Config(void);
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@ -266,9 +266,7 @@ soft_reset:
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#endif
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#endif
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#if 0
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pin_map_init();
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#endif
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// add some functions to the builtin Python namespace
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rt_store_name(MP_QSTR_help, rt_make_function_n(0, pyb_help));
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@ -5,16 +5,7 @@
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* @version V1.0.1
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* @date 26-February-2014
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* @brief HAL MSP module.
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*
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@verbatim
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===============================================================================
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##### How to use this driver #####
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===============================================================================
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[..]
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This file is generated automatically by MicroXplorer and eventually modified
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by the user
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@endverbatim
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*
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******************************************************************************
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* @attention
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*
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@ -56,25 +47,7 @@
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#include "obj.h"
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#include "servo.h"
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/** @addtogroup STM32F4xx_HAL_Driver
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* @{
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*/
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/** @defgroup HAL_MSP
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* @brief HAL MSP module.
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* @{
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*/
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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/* Private functions ---------------------------------------------------------*/
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/** @defgroup HAL_MSP_Private_Functions
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* @{
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*/
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TIM_HandleTypeDef TIM3_Handle;
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/**
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* @brief Initializes the Global MSP.
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@ -83,9 +56,21 @@
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*/
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void HAL_MspInit(void) {
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// set up the timer for USBD CDC
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USBD_CDC_TIMx_CLK_ENABLE();
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HAL_NVIC_SetPriority(USBD_CDC_TIMx_IRQn, 6, 0);
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HAL_NVIC_EnableIRQ(USBD_CDC_TIMx_IRQn);
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__TIM3_CLK_ENABLE();
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TIM3_Handle.Instance = TIM3;
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TIM3_Handle.Init.Period = (USBD_CDC_POLLING_INTERVAL*1000) - 1;
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TIM3_Handle.Init.Prescaler = 84-1;
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TIM3_Handle.Init.ClockDivision = 0;
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TIM3_Handle.Init.CounterMode = TIM_COUNTERMODE_UP;
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HAL_TIM_Base_Init(&TIM3_Handle);
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HAL_NVIC_SetPriority(TIM3_IRQn, 6, 0);
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HAL_NVIC_EnableIRQ(TIM3_IRQn);
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if (HAL_TIM_Base_Start(&TIM3_Handle) != HAL_OK) {
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/* Starting Error */
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}
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}
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/**
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@ -94,9 +79,9 @@ void HAL_MspInit(void) {
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* @retval None
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*/
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void HAL_MspDeInit(void) {
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// reset USBD CDC timer
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USBD_CDC_TIMx_FORCE_RESET();
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USBD_CDC_TIMx_RELEASE_RESET();
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// reset TIM3 timer
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__TIM3_FORCE_RESET();
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__TIM3_RELEASE_RESET();
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}
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/**
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@ -162,7 +147,7 @@ void HAL_RTC_MspDeInit(RTC_HandleTypeDef *hrtc)
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}
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void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim) {
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if (htim == &USBD_CDC_TIM3_Handle) {
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if (htim == &TIM3_Handle) {
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USBD_CDC_HAL_TIM_PeriodElapsedCallback();
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} else if (htim == &servo_TIM2_Handle) {
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servo_timer_irq_callback();
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@ -357,8 +357,7 @@ void TIM2_IRQHandler(void) {
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}
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void TIM3_IRQHandler(void) {
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// USBD CDC timer is TIM3
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HAL_TIM_IRQHandler(&USBD_CDC_TIM3_Handle);
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HAL_TIM_IRQHandler(&TIM3_Handle);
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}
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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@ -65,8 +65,6 @@ static uint16_t UserTxBufPtrOut = 0; // increment this pointer modulo APP_TX_DAT
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static int user_interrupt_char = VCP_CHAR_NONE;
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static void *user_interrupt_data = NULL;
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/* TIM handler declaration */
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TIM_HandleTypeDef USBD_CDC_TIM3_Handle;
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/* USB handler declaration */
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extern USBD_HandleTypeDef hUSBDDevice;
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@ -76,8 +74,6 @@ static int8_t CDC_Itf_DeInit (void);
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static int8_t CDC_Itf_Control (uint8_t cmd, uint8_t* pbuf, uint16_t length);
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static int8_t CDC_Itf_Receive (uint8_t* pbuf, uint32_t *Len);
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static void TIM_Config(void);
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const USBD_CDC_ItfTypeDef USBD_CDC_fops = {
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CDC_Itf_Init,
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CDC_Itf_DeInit,
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@ -125,21 +121,19 @@ static int8_t CDC_Itf_Init(void)
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/* Transfer error in reception process */
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Error_Handler();
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}
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#endif
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/*##-3- Configure the TIM Base generation #################################*/
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now done in HAL_MspInit
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TIM_Config();
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#endif
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/*##-4- Start the TIM Base generation in interrupt mode ####################*/
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/* Start Channel1 */
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if(HAL_TIM_Base_Start_IT(&USBD_CDC_TIM3_Handle) != HAL_OK)
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{
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/* Starting Error */
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}
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/*##-4- Start the TIM Base generation in interrupt mode ####################*/
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/* Start Channel1 */
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__HAL_TIM_ENABLE_IT(&TIM3_Handle, TIM_IT_UPDATE);
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/*##-5- Set Application Buffers ############################################*/
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USBD_CDC_SetTxBuffer(&hUSBDDevice, UserTxBuffer, 0);
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USBD_CDC_SetRxBuffer(&hUSBDDevice, UserRxBuffer);
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/*##-5- Set Application Buffers ############################################*/
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USBD_CDC_SetTxBuffer(&hUSBDDevice, UserTxBuffer, 0);
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USBD_CDC_SetRxBuffer(&hUSBDDevice, UserRxBuffer);
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UserRxBufCur = 0;
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UserRxBufLen = 0;
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@ -147,7 +141,7 @@ static int8_t CDC_Itf_Init(void)
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user_interrupt_char = VCP_CHAR_NONE;
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user_interrupt_data = NULL;
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return (USBD_OK);
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return (USBD_OK);
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}
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/**
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@ -378,29 +372,3 @@ int USBD_CDC_RxGet(void) {
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}
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return c;
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}
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/**
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* @brief TIM_Config: Configure TIMx timer
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* @param None.
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* @retval None.
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*/
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static void TIM_Config(void)
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{
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/* Set TIMx instance */
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USBD_CDC_TIM3_Handle.Instance = USBD_CDC_TIMx;
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/* Initialize TIM3 peripheral as follow:
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+ Period = 10000 - 1
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+ Prescaler = ((SystemCoreClock/2)/10000) - 1
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+ ClockDivision = 0
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+ Counter direction = Up
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*/
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USBD_CDC_TIM3_Handle.Init.Period = (USBD_CDC_POLLING_INTERVAL*1000) - 1;
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USBD_CDC_TIM3_Handle.Init.Prescaler = 84-1;
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USBD_CDC_TIM3_Handle.Init.ClockDivision = 0;
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USBD_CDC_TIM3_Handle.Init.CounterMode = TIM_COUNTERMODE_UP;
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if(HAL_TIM_Base_Init(&USBD_CDC_TIM3_Handle) != HAL_OK)
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{
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/* Initialization Error */
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}
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}
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@ -33,21 +33,11 @@
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/* Exported types ------------------------------------------------------------*/
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/* Exported constants --------------------------------------------------------*/
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/* Definition for TIMx clock resources */
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#define USBD_CDC_TIMx TIM3
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#define USBD_CDC_TIMx_CLK_ENABLE __TIM3_CLK_ENABLE
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#define USBD_CDC_TIMx_FORCE_RESET() __TIM3_FORCE_RESET()
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#define USBD_CDC_TIMx_RELEASE_RESET() __TIM3_RELEASE_RESET()
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/* Definition for TIMx's NVIC */
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#define USBD_CDC_TIMx_IRQn TIM3_IRQn
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//#define USBD_CDC_TIMx_IRQHandler TIM3_IRQHandler // this is hard coded in stm32f4xx_it.c
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/* Periodically, the state of the buffer "UserTxBuffer" is checked.
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The period depends on USBD_CDC_POLLING_INTERVAL */
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#define USBD_CDC_POLLING_INTERVAL 10 /* in ms. The max is 65 and the min is 1 */
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extern TIM_HandleTypeDef USBD_CDC_TIM3_Handle;
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extern TIM_HandleTypeDef TIM3_Handle;
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extern const USBD_CDC_ItfTypeDef USBD_CDC_fops;
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void USBD_CDC_HAL_TIM_PeriodElapsedCallback(void);
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