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>
185 lines
7.3 KiB
C
185 lines
7.3 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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* The MIT License (MIT)
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*
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* Copyright (c) 2020-2021 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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#include "py/runtime.h"
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#include "py/mphal.h"
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#include "shared/runtime/pyexec.h"
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#include "extmod/machine_i2c.h"
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#include "extmod/machine_mem.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_signal.h"
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#include "extmod/machine_spi.h"
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#include "modmachine.h"
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#include "uart.h"
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#include "hardware/clocks.h"
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#include "hardware/watchdog.h"
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#include "pico/bootrom.h"
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#include "pico/stdlib.h"
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#include "pico/unique_id.h"
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#define RP2_RESET_PWRON (1)
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#define RP2_RESET_WDT (3)
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STATIC mp_obj_t machine_unique_id(void) {
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pico_unique_board_id_t id;
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pico_get_unique_board_id(&id);
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return mp_obj_new_bytes(id.id, sizeof(id.id));
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}
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MP_DEFINE_CONST_FUN_OBJ_0(machine_unique_id_obj, machine_unique_id);
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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_reset(void) {
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watchdog_reboot(0, SRAM_END, 0);
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for (;;) {
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__wfi();
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}
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_0(machine_reset_obj, machine_reset);
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STATIC mp_obj_t machine_reset_cause(void) {
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int reset_cause;
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if (watchdog_caused_reboot()) {
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reset_cause = RP2_RESET_WDT;
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} else {
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reset_cause = RP2_RESET_PWRON;
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}
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return MP_OBJ_NEW_SMALL_INT(reset_cause);
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_0(machine_reset_cause_obj, machine_reset_cause);
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STATIC mp_obj_t machine_bootloader(void) {
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reset_usb_boot(0, 0);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_0(machine_bootloader_obj, machine_bootloader);
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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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return MP_OBJ_NEW_SMALL_INT(clock_get_hz(clk_sys));
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} else {
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mp_int_t freq = mp_obj_get_int(args[0]);
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if (!set_sys_clock_khz(freq / 1000, false)) {
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mp_raise_ValueError(MP_ERROR_TEXT("cannot change frequency"));
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}
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#if MICROPY_HW_ENABLE_UART_REPL
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setup_default_uart();
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mp_uart_init();
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#endif
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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_idle(void) {
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best_effort_wfe_or_timeout(make_timeout_time_ms(1));
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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_lightsleep(size_t n_args, const mp_obj_t *args) {
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if (n_args == 0) {
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for (;;) {
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MICROPY_EVENT_POLL_HOOK
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}
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} else {
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mp_hal_delay_ms(mp_obj_get_int(args[0]));
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}
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_lightsleep_obj, 0, 1, machine_lightsleep);
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STATIC mp_obj_t machine_deepsleep(size_t n_args, const mp_obj_t *args) {
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machine_lightsleep(n_args, args);
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return machine_reset();
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}
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MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_deepsleep_obj, 0, 1, machine_deepsleep);
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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_unique_id), MP_ROM_PTR(&machine_unique_id_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_reset), MP_ROM_PTR(&machine_reset_obj) },
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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_bootloader), MP_ROM_PTR(&machine_bootloader_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_idle), MP_ROM_PTR(&machine_idle_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_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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{ MP_ROM_QSTR(MP_QSTR_time_pulse_us), MP_ROM_PTR(&machine_time_pulse_us_obj) },
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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_ADC), MP_ROM_PTR(&machine_adc_type) },
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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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{ MP_ROM_QSTR(MP_QSTR_Pin), MP_ROM_PTR(&machine_pin_type) },
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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_Signal), MP_ROM_PTR(&machine_signal_type) },
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{ MP_ROM_QSTR(MP_QSTR_SPI), MP_ROM_PTR(&machine_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_Timer), MP_ROM_PTR(&machine_timer_type) },
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{ MP_ROM_QSTR(MP_QSTR_UART), MP_ROM_PTR(&machine_uart_type) },
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{ MP_ROM_QSTR(MP_QSTR_WDT), MP_ROM_PTR(&machine_wdt_type) },
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{ MP_ROM_QSTR(MP_QSTR_PWRON_RESET), MP_ROM_INT(RP2_RESET_PWRON) },
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{ MP_ROM_QSTR(MP_QSTR_WDT_RESET), MP_ROM_INT(RP2_RESET_WDT) },
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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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