diff --git a/ports/esp32s2/Makefile b/ports/esp32s2/Makefile index 55d6e91d44..931e4d0639 100644 --- a/ports/esp32s2/Makefile +++ b/ports/esp32s2/Makefile @@ -188,6 +188,7 @@ SRC_C += \ lib/utils/pyexec.c \ lib/utils/stdout_helpers.c \ lib/utils/sys_stdio_mphal.c \ + peripherals/timer.c \ peripherals/pcnt.c \ peripherals/pins.c \ peripherals/rmt.c \ diff --git a/ports/esp32s2/peripherals/timer.c b/ports/esp32s2/peripherals/timer.c new file mode 100644 index 0000000000..3aee33dc50 --- /dev/null +++ b/ports/esp32s2/peripherals/timer.c @@ -0,0 +1,73 @@ +/* + * This file is part of the MicroPython project, http://micropython.org/ + * + * The MIT License (MIT) + * + * Copyright (c) 2020 microDev + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "peripherals/timer.h" + +#define TIMER_FREE 1 +#define TIMER_BUSY 0 + +static uint8_t timer_state[2][2]; + +void peripherals_timer_reset(void) { + timer_index_t timer; + for (uint8_t i = 0; i < 2; i++) { + for (uint8_t j = 0; j < 2; j++) { + if (timer_state[i][j] == TIMER_BUSY) { + timer.idx = (timer_idx_t)j; + timer.group = (timer_group_t)i; + timer_state[i][j] = TIMER_FREE; + peripherals_timer_deinit(&timer); + } + } + } +} + +void peripherals_timer_init(const timer_config_t * config, timer_index_t * timer) { + // get free timer + for (uint8_t i = 0; i < 2; i++) { + for (uint8_t j = 0; j < 2; j++) { + if (timer_state[i][j] == TIMER_FREE) { + timer->idx = (timer_idx_t)j; + timer->group = (timer_group_t)i; + timer_state[i][j] = TIMER_BUSY; + goto init_timer; + } else if (i == 1 && j == 1) { + timer->idx = TIMER_MAX; + timer->group = TIMER_GROUP_MAX; + return; + } + } + } + +init_timer: + // initialize timer module + timer_init(timer->group, timer->idx, config); + timer_set_counter_value(timer->group, timer->idx, 0); +} + +void peripherals_timer_deinit(timer_index_t * timer) { + timer_deinit(timer->group, timer->idx); +} diff --git a/ports/esp32s2/peripherals/timer.h b/ports/esp32s2/peripherals/timer.h new file mode 100644 index 0000000000..8c9ebd91c9 --- /dev/null +++ b/ports/esp32s2/peripherals/timer.h @@ -0,0 +1,41 @@ +/* + * This file is part of the MicroPython project, http://micropython.org/ + * + * The MIT License (MIT) + * + * Copyright (c) 2020 microDev + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#ifndef MICROPY_INCLUDED_ESP32S2_PERIPHERALS_TIMER_HANDLER_H +#define MICROPY_INCLUDED_ESP32S2_PERIPHERALS_TIMER_HANDLER_H + +#include "driver/timer.h" + +typedef struct { + timer_idx_t idx; + timer_group_t group; +} timer_index_t; + +extern void peripherals_timer_init(const timer_config_t * config, timer_index_t * timer); +extern void peripherals_timer_deinit(timer_index_t * timer); +extern void peripherals_timer_reset(void); + +#endif // MICROPY_INCLUDED_ESP32S2_PERIPHERALS_TIMER_HANDLER_H diff --git a/ports/esp32s2/supervisor/port.c b/ports/esp32s2/supervisor/port.c index ef032c4a76..4bf792516d 100644 --- a/ports/esp32s2/supervisor/port.c +++ b/ports/esp32s2/supervisor/port.c @@ -50,6 +50,7 @@ #include "peripherals/rmt.h" #include "peripherals/pcnt.h" +#include "peripherals/timer.h" #include "components/heap/include/esp_heap_caps.h" #include "components/soc/soc/esp32s2/include/soc/cache_memory.h" @@ -103,15 +104,6 @@ void reset_port(void) { analogout_reset(); #endif -#if CIRCUITPY_PULSEIO - esp32s2_peripherals_rmt_reset(); - pulsein_reset(); -#endif - -#if CIRCUITPY_PWMIO - pwmout_reset(); -#endif - #if CIRCUITPY_BUSIO i2c_reset(); spi_reset(); @@ -122,6 +114,19 @@ void reset_port(void) { peripherals_pcnt_reset(); #endif +#if CIRCUITPY_FREQUENCYIO + peripherals_timer_reset(); +#endif + +#if CIRCUITPY_PULSEIO + esp32s2_peripherals_rmt_reset(); + pulsein_reset(); +#endif + +#if CIRCUITPY_PWMIO + pwmout_reset(); +#endif + #if CIRCUITPY_RTC rtc_reset(); #endif