circuitpython/ports/esp32s2/supervisor/port.c

179 lines
5.1 KiB
C

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
* Copyright (c) 2019 Lucian Copeland for Adafruit Industries
*
* 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 <stdint.h>
#include <sys/time.h>
#include "supervisor/port.h"
#include "boards/board.h"
#include "modules/module.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "common-hal/microcontroller/Pin.h"
#include "common-hal/busio/I2C.h"
#include "common-hal/busio/SPI.h"
#include "common-hal/busio/UART.h"
#include "supervisor/memory.h"
#include "supervisor/shared/tick.h"
#include "esp_log.h"
static const char* TAG = "CircuitPython";
STATIC esp_timer_handle_t _tick_timer;
void tick_timer_cb(void* arg) {
supervisor_tick();
}
safe_mode_t port_init(void) {
esp_timer_create_args_t args;
args.callback = &tick_timer_cb;
args.arg = NULL;
args.dispatch_method = ESP_TIMER_TASK;
args.name = "CircuitPython Tick";
esp_err_t result = esp_timer_create(&args, &_tick_timer);
if (result != ESP_OK) {
ESP_EARLY_LOGE(TAG, "Unable to create tick timer.");
}
never_reset_module_internal_pins();
ESP_EARLY_LOGW(TAG, "port init done");
return NO_SAFE_MODE;
}
void reset_port(void) {
reset_all_pins();
#if CIRCUITPY_BUSIO
i2c_reset();
spi_reset();
uart_reset();
#endif
}
void reset_to_bootloader(void) {
}
void reset_cpu(void) {
}
uint32_t heap[64 / sizeof(uint32_t) * 1024];
uint32_t *port_heap_get_bottom(void) {
return heap;
}
uint32_t *port_heap_get_top(void) {
return heap + sizeof(heap) / sizeof(heap[0]);
}
uint32_t *port_stack_get_limit(void) {
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wcast-align"
return (uint32_t*) pxTaskGetStackStart(NULL);
#pragma GCC diagnostic pop
}
uint32_t *port_stack_get_top(void) {
return port_stack_get_limit() + CONFIG_ESP_MAIN_TASK_STACK_SIZE / (sizeof(uint32_t) / sizeof(StackType_t));
}
supervisor_allocation _fixed_stack;
supervisor_allocation* port_fixed_stack(void) {
ESP_EARLY_LOGW(TAG, "port fixed stack");
_fixed_stack.ptr = port_stack_get_limit();
ESP_EARLY_LOGW(TAG, "got limit %p", _fixed_stack.ptr);
_fixed_stack.length = (port_stack_get_top() - port_stack_get_limit()) * sizeof(uint32_t);
ESP_EARLY_LOGW(TAG, "got length %d", _fixed_stack.length);
return &_fixed_stack;
}
// Place the word to save just after our BSS section that gets blanked.
void port_set_saved_word(uint32_t value) {
}
uint32_t port_get_saved_word(void) {
return 0;
}
uint64_t port_get_raw_ticks(uint8_t* subticks) {
struct timeval tv_now;
gettimeofday(&tv_now, NULL);
// convert usec back to ticks
uint64_t all_subticks = (uint64_t)(tv_now.tv_usec * 2) / 71;
if (subticks != NULL) {
*subticks = all_subticks % 32;
}
return (uint64_t)tv_now.tv_sec * 1024L + all_subticks / 32;
}
// Enable 1/1024 second tick.
void port_enable_tick(void) {
esp_err_t result = esp_timer_start_periodic(_tick_timer, 1000000 / 1024);
if (result != ESP_OK) {
ESP_EARLY_LOGE(TAG, "Unable to start tick timer.");
}
}
// Disable 1/1024 second tick.
void port_disable_tick(void) {
esp_timer_stop(_tick_timer);
}
TickType_t sleep_time_set;
TickType_t sleep_time_duration;
void port_interrupt_after_ticks(uint32_t ticks) {
// ESP_EARLY_LOGW(TAG, "after ticks");
sleep_time_set = xTaskGetTickCount();
sleep_time_duration = ticks / portTICK_PERIOD_MS;
// esp_sleep_enable_timer_wakeup(uint64_t time_in_us)
}
void port_sleep_until_interrupt(void) {
// ESP_EARLY_LOGW(TAG, "sleep until");
// FreeRTOS delay here maybe.
// Light sleep shuts down BLE and wifi.
// esp_light_sleep_start()
if (sleep_time_duration == 0) {
return;
}
vTaskDelayUntil(&sleep_time_set, sleep_time_duration);
}
// Wrap main in app_main that the IDF expects.
extern void main(void);
void app_main(void) {
ESP_EARLY_LOGW(TAG, "Hello from CircuitPython");
// ESP_LOGW(TAG, "Hello from CircuitPython");
main();
}