af64c2ddbd
This commit refactors machine.PWM and creates extmod/machine_pwm.c. The esp8266, esp32 and rp2 ports all use this and provide implementations of the required PWM functionality. This helps to reduce code duplication and keep the same Python API across ports. This commit does not make any functional changes. Signed-off-by: Damien George <damien@micropython.org>
338 lines
12 KiB
C
338 lines
12 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* Development of the code in this file was sponsored by Microbric Pty Ltd
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013-2015 Damien P. George
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* Copyright (c) 2016 Paul Sokolovsky
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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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#include <stdint.h>
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#include <stdio.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "esp_sleep.h"
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#include "esp_pm.h"
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#if CONFIG_IDF_TARGET_ESP32
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#include "esp32/rom/rtc.h"
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#include "esp32/clk.h"
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#elif CONFIG_IDF_TARGET_ESP32S2
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#include "esp32s2/rom/rtc.h"
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#include "esp32s2/clk.h"
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#elif CONFIG_IDF_TARGET_ESP32S3
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#include "esp32s3/rom/rtc.h"
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#include "esp32s3/clk.h"
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#endif
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#include "py/obj.h"
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#include "py/runtime.h"
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#include "shared/runtime/pyexec.h"
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#include "extmod/machine_bitstream.h"
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#include "extmod/machine_mem.h"
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#include "extmod/machine_signal.h"
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#include "extmod/machine_pulse.h"
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#include "extmod/machine_pwm.h"
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#include "extmod/machine_i2c.h"
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#include "extmod/machine_spi.h"
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#include "modmachine.h"
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#include "machine_rtc.h"
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#if MICROPY_PY_MACHINE
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typedef enum {
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MP_PWRON_RESET = 1,
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MP_HARD_RESET,
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MP_WDT_RESET,
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MP_DEEPSLEEP_RESET,
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MP_SOFT_RESET
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} reset_reason_t;
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STATIC bool is_soft_reset = 0;
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#if CONFIG_IDF_TARGET_ESP32C3
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int esp_clk_cpu_freq(void);
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#endif
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STATIC mp_obj_t machine_freq(size_t n_args, const mp_obj_t *args) {
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if (n_args == 0) {
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// get
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return mp_obj_new_int(esp_clk_cpu_freq());
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} else {
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// set
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mp_int_t freq = mp_obj_get_int(args[0]) / 1000000;
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if (freq != 20 && freq != 40 && freq != 80 && freq != 160 && freq != 240) {
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mp_raise_ValueError(MP_ERROR_TEXT("frequency must be 20MHz, 40MHz, 80Mhz, 160MHz or 240MHz"));
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}
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#if CONFIG_IDF_TARGET_ESP32
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esp_pm_config_esp32_t pm;
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#elif CONFIG_IDF_TARGET_ESP32C3
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esp_pm_config_esp32c3_t pm;
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#elif CONFIG_IDF_TARGET_ESP32S2
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esp_pm_config_esp32s2_t pm;
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#endif
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pm.max_freq_mhz = freq;
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pm.min_freq_mhz = freq;
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pm.light_sleep_enable = false;
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esp_err_t ret = esp_pm_configure(&pm);
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if (ret != ESP_OK) {
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mp_raise_ValueError(NULL);
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}
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while (esp_clk_cpu_freq() != freq * 1000000) {
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vTaskDelay(1);
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}
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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_VAR_BETWEEN(machine_freq_obj, 0, 1, machine_freq);
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STATIC mp_obj_t machine_sleep_helper(wake_type_t wake_type, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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enum {ARG_sleep_ms};
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const mp_arg_t allowed_args[] = {
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{ MP_QSTR_sleep_ms, MP_ARG_INT, { .u_int = 0 } },
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};
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mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
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mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
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mp_int_t expiry = args[ARG_sleep_ms].u_int;
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if (expiry != 0) {
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esp_sleep_enable_timer_wakeup(((uint64_t)expiry) * 1000);
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}
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#if !CONFIG_IDF_TARGET_ESP32C3
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if (machine_rtc_config.ext0_pin != -1 && (machine_rtc_config.ext0_wake_types & wake_type)) {
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esp_sleep_enable_ext0_wakeup(machine_rtc_config.ext0_pin, machine_rtc_config.ext0_level ? 1 : 0);
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}
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if (machine_rtc_config.ext1_pins != 0) {
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esp_sleep_enable_ext1_wakeup(
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machine_rtc_config.ext1_pins,
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machine_rtc_config.ext1_level ? ESP_EXT1_WAKEUP_ANY_HIGH : ESP_EXT1_WAKEUP_ALL_LOW);
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}
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if (machine_rtc_config.wake_on_touch) {
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if (esp_sleep_enable_touchpad_wakeup() != ESP_OK) {
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mp_raise_msg(&mp_type_RuntimeError, MP_ERROR_TEXT("esp_sleep_enable_touchpad_wakeup() failed"));
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}
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}
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#endif
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switch (wake_type) {
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case MACHINE_WAKE_SLEEP:
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esp_light_sleep_start();
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break;
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case MACHINE_WAKE_DEEPSLEEP:
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esp_deep_sleep_start();
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break;
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}
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return mp_const_none;
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}
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STATIC mp_obj_t machine_lightsleep(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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return machine_sleep_helper(MACHINE_WAKE_SLEEP, n_args, pos_args, kw_args);
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};
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STATIC MP_DEFINE_CONST_FUN_OBJ_KW(machine_lightsleep_obj, 0, machine_lightsleep);
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STATIC mp_obj_t machine_deepsleep(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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return machine_sleep_helper(MACHINE_WAKE_DEEPSLEEP, n_args, pos_args, kw_args);
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};
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STATIC MP_DEFINE_CONST_FUN_OBJ_KW(machine_deepsleep_obj, 0, machine_deepsleep);
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STATIC mp_obj_t machine_reset_cause(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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if (is_soft_reset) {
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return MP_OBJ_NEW_SMALL_INT(MP_SOFT_RESET);
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}
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switch (esp_reset_reason()) {
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case ESP_RST_POWERON:
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case ESP_RST_BROWNOUT:
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return MP_OBJ_NEW_SMALL_INT(MP_PWRON_RESET);
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break;
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case ESP_RST_INT_WDT:
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case ESP_RST_TASK_WDT:
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case ESP_RST_WDT:
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return MP_OBJ_NEW_SMALL_INT(MP_WDT_RESET);
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break;
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case ESP_RST_DEEPSLEEP:
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return MP_OBJ_NEW_SMALL_INT(MP_DEEPSLEEP_RESET);
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break;
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case ESP_RST_SW:
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case ESP_RST_PANIC:
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case ESP_RST_EXT: // Comment in ESP-IDF: "For ESP32, ESP_RST_EXT is never returned"
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return MP_OBJ_NEW_SMALL_INT(MP_HARD_RESET);
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break;
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case ESP_RST_SDIO:
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case ESP_RST_UNKNOWN:
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default:
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return MP_OBJ_NEW_SMALL_INT(0);
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break;
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}
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_KW(machine_reset_cause_obj, 0, machine_reset_cause);
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void machine_init(void) {
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is_soft_reset = 0;
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}
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void machine_deinit(void) {
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// we are doing a soft-reset so change the reset_cause
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is_soft_reset = 1;
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}
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STATIC mp_obj_t machine_wake_reason(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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return MP_OBJ_NEW_SMALL_INT(esp_sleep_get_wakeup_cause());
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_KW(machine_wake_reason_obj, 0, machine_wake_reason);
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STATIC mp_obj_t machine_reset(void) {
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esp_restart();
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_0(machine_reset_obj, machine_reset);
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STATIC mp_obj_t machine_soft_reset(void) {
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pyexec_system_exit = PYEXEC_FORCED_EXIT;
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mp_raise_type(&mp_type_SystemExit);
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_0(machine_soft_reset_obj, machine_soft_reset);
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STATIC mp_obj_t machine_unique_id(void) {
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uint8_t chipid[6];
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esp_efuse_mac_get_default(chipid);
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return mp_obj_new_bytes(chipid, 6);
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_0(machine_unique_id_obj, machine_unique_id);
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STATIC mp_obj_t machine_idle(void) {
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MP_THREAD_GIL_EXIT();
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taskYIELD();
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MP_THREAD_GIL_ENTER();
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_0(machine_idle_obj, machine_idle);
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STATIC mp_obj_t machine_disable_irq(void) {
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uint32_t state = MICROPY_BEGIN_ATOMIC_SECTION();
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return mp_obj_new_int(state);
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}
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MP_DEFINE_CONST_FUN_OBJ_0(machine_disable_irq_obj, machine_disable_irq);
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STATIC mp_obj_t machine_enable_irq(mp_obj_t state_in) {
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uint32_t state = mp_obj_get_int(state_in);
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MICROPY_END_ATOMIC_SECTION(state);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_1(machine_enable_irq_obj, machine_enable_irq);
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STATIC const mp_rom_map_elem_t machine_module_globals_table[] = {
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{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_umachine) },
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{ MP_ROM_QSTR(MP_QSTR_mem8), MP_ROM_PTR(&machine_mem8_obj) },
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{ MP_ROM_QSTR(MP_QSTR_mem16), MP_ROM_PTR(&machine_mem16_obj) },
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{ MP_ROM_QSTR(MP_QSTR_mem32), MP_ROM_PTR(&machine_mem32_obj) },
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{ MP_ROM_QSTR(MP_QSTR_freq), MP_ROM_PTR(&machine_freq_obj) },
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{ MP_ROM_QSTR(MP_QSTR_reset), MP_ROM_PTR(&machine_reset_obj) },
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{ MP_ROM_QSTR(MP_QSTR_soft_reset), MP_ROM_PTR(&machine_soft_reset_obj) },
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{ MP_ROM_QSTR(MP_QSTR_unique_id), MP_ROM_PTR(&machine_unique_id_obj) },
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{ MP_ROM_QSTR(MP_QSTR_sleep), MP_ROM_PTR(&machine_lightsleep_obj) },
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{ MP_ROM_QSTR(MP_QSTR_lightsleep), MP_ROM_PTR(&machine_lightsleep_obj) },
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{ MP_ROM_QSTR(MP_QSTR_deepsleep), MP_ROM_PTR(&machine_deepsleep_obj) },
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{ MP_ROM_QSTR(MP_QSTR_idle), MP_ROM_PTR(&machine_idle_obj) },
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{ MP_ROM_QSTR(MP_QSTR_disable_irq), MP_ROM_PTR(&machine_disable_irq_obj) },
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{ MP_ROM_QSTR(MP_QSTR_enable_irq), MP_ROM_PTR(&machine_enable_irq_obj) },
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#if MICROPY_PY_MACHINE_BITSTREAM
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{ MP_ROM_QSTR(MP_QSTR_bitstream), MP_ROM_PTR(&machine_bitstream_obj) },
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#endif
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#if MICROPY_PY_MACHINE_PULSE
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{ MP_ROM_QSTR(MP_QSTR_time_pulse_us), MP_ROM_PTR(&machine_time_pulse_us_obj) },
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#endif
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{ MP_ROM_QSTR(MP_QSTR_Timer), MP_ROM_PTR(&machine_timer_type) },
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{ MP_ROM_QSTR(MP_QSTR_WDT), MP_ROM_PTR(&machine_wdt_type) },
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#if MICROPY_HW_ENABLE_SDCARD
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{ MP_ROM_QSTR(MP_QSTR_SDCard), MP_ROM_PTR(&machine_sdcard_type) },
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#endif
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// wake abilities
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{ MP_ROM_QSTR(MP_QSTR_SLEEP), MP_ROM_INT(MACHINE_WAKE_SLEEP) },
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{ MP_ROM_QSTR(MP_QSTR_DEEPSLEEP), MP_ROM_INT(MACHINE_WAKE_DEEPSLEEP) },
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{ MP_ROM_QSTR(MP_QSTR_Pin), MP_ROM_PTR(&machine_pin_type) },
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{ MP_ROM_QSTR(MP_QSTR_Signal), MP_ROM_PTR(&machine_signal_type) },
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#if CONFIG_IDF_TARGET_ESP32
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{ MP_ROM_QSTR(MP_QSTR_TouchPad), MP_ROM_PTR(&machine_touchpad_type) },
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#endif
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{ MP_ROM_QSTR(MP_QSTR_ADC), MP_ROM_PTR(&machine_adc_type) },
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#if MICROPY_PY_MACHINE_DAC
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{ MP_ROM_QSTR(MP_QSTR_DAC), MP_ROM_PTR(&machine_dac_type) },
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#endif
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{ MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&machine_hw_i2c_type) },
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{ MP_ROM_QSTR(MP_QSTR_SoftI2C), MP_ROM_PTR(&mp_machine_soft_i2c_type) },
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#if MICROPY_PY_MACHINE_I2S
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{ MP_ROM_QSTR(MP_QSTR_I2S), MP_ROM_PTR(&machine_i2s_type) },
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#endif
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{ MP_ROM_QSTR(MP_QSTR_PWM), MP_ROM_PTR(&machine_pwm_type) },
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{ MP_ROM_QSTR(MP_QSTR_RTC), MP_ROM_PTR(&machine_rtc_type) },
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{ MP_ROM_QSTR(MP_QSTR_SPI), MP_ROM_PTR(&machine_hw_spi_type) },
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{ MP_ROM_QSTR(MP_QSTR_SoftSPI), MP_ROM_PTR(&mp_machine_soft_spi_type) },
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{ MP_ROM_QSTR(MP_QSTR_UART), MP_ROM_PTR(&machine_uart_type) },
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// Reset reasons
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{ MP_ROM_QSTR(MP_QSTR_reset_cause), MP_ROM_PTR(&machine_reset_cause_obj) },
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{ MP_ROM_QSTR(MP_QSTR_HARD_RESET), MP_ROM_INT(MP_HARD_RESET) },
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{ MP_ROM_QSTR(MP_QSTR_PWRON_RESET), MP_ROM_INT(MP_PWRON_RESET) },
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{ MP_ROM_QSTR(MP_QSTR_WDT_RESET), MP_ROM_INT(MP_WDT_RESET) },
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{ MP_ROM_QSTR(MP_QSTR_DEEPSLEEP_RESET), MP_ROM_INT(MP_DEEPSLEEP_RESET) },
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{ MP_ROM_QSTR(MP_QSTR_SOFT_RESET), MP_ROM_INT(MP_SOFT_RESET) },
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// Wake reasons
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{ MP_ROM_QSTR(MP_QSTR_wake_reason), MP_ROM_PTR(&machine_wake_reason_obj) },
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{ MP_ROM_QSTR(MP_QSTR_PIN_WAKE), MP_ROM_INT(ESP_SLEEP_WAKEUP_EXT0) },
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{ MP_ROM_QSTR(MP_QSTR_EXT0_WAKE), MP_ROM_INT(ESP_SLEEP_WAKEUP_EXT0) },
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{ MP_ROM_QSTR(MP_QSTR_EXT1_WAKE), MP_ROM_INT(ESP_SLEEP_WAKEUP_EXT1) },
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{ MP_ROM_QSTR(MP_QSTR_TIMER_WAKE), MP_ROM_INT(ESP_SLEEP_WAKEUP_TIMER) },
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{ MP_ROM_QSTR(MP_QSTR_TOUCHPAD_WAKE), MP_ROM_INT(ESP_SLEEP_WAKEUP_TOUCHPAD) },
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{ MP_ROM_QSTR(MP_QSTR_ULP_WAKE), MP_ROM_INT(ESP_SLEEP_WAKEUP_ULP) },
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};
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STATIC MP_DEFINE_CONST_DICT(machine_module_globals, machine_module_globals_table);
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const mp_obj_module_t mp_module_machine = {
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.base = { &mp_type_module },
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.globals = (mp_obj_dict_t *)&machine_module_globals,
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};
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#endif // MICROPY_PY_MACHINE
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