5db6db0128
This uses the esp32-camera code instead of our own homebrewed camera code.
In theory it supports esp32, esp32-s2 and esp32-s3, as long as they have
PSRAM.
This is very basic and doesn't support changing any camera parameters,
including switching resolution or pixelformat.
This is tested on the Kaluga (ESP32-S2) and ESP32-S3-Eye boards.
First, reserve some PSRAM by putting this line in `CIRCUITPY/_env`:
```
CIRCUITPY_RESERVED_PSRAM=524288
```
and hard-reset the board for it to take effect.
Now, the following script will take a very low-resolution jpeg file and print
it in the REPL in escape coded form:
```python
import board
import esp32_camera
c = esp32_camera.Camera(
data_pins=board.CAMERA_DATA,
external_clock_pin=board.CAMERA_XCLK,
pixel_clock_pin=board.CAMERA_PCLK,
vsync_pin=board.CAMERA_VSYNC,
href_pin=board.CAMERA_HREF,
pixel_format=esp32_camera.PixelFormat.JPEG,
i2c=board.I2C(),
external_clock_frequency=20_000_000)
m = c.take()
if m is not None:
print(bytes(m))
```
Then on desktop open a python repl and run something like
```python
>>> with open("my.jpg", "wb") as f: f.write(<BIG PASTE FROM REPL>)
```
and open my.jpg in a viewer.
145 lines
5.3 KiB
C
145 lines
5.3 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) 2022 Jeff Epler for Adafruit Industries
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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 "bindings/esp32_camera/Camera.h"
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#include "bindings/espidf/__init__.h"
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#include "common-hal/esp32_camera/Camera.h"
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#include "shared-bindings/microcontroller/Pin.h"
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#include "common-hal/microcontroller/Pin.h"
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static void maybe_claim_pin(const mcu_pin_obj_t *pin) {
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if (pin) {
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claim_pin(pin);
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}
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}
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void common_hal_esp32_camera_camera_construct(
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esp32_camera_camera_obj_t *self,
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uint8_t data_pins[8],
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const mcu_pin_obj_t *external_clock_pin,
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const mcu_pin_obj_t *pixel_clock_pin,
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const mcu_pin_obj_t *vsync_pin,
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const mcu_pin_obj_t *href_pin,
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const mcu_pin_obj_t *powerdown_pin,
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const mcu_pin_obj_t *reset_pin,
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const busio_i2c_obj_t *i2c,
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mp_int_t external_clock_frequency,
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pixformat_t pixel_format,
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framesize_t frame_size,
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mp_int_t jpeg_quality,
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mp_int_t framebuffer_count,
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camera_grab_mode_t grab_mode) {
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for (int i = 0; i < 8; i++) {
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claim_pin_number(data_pins[i]);
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}
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claim_pin(external_clock_pin);
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claim_pin(pixel_clock_pin);
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claim_pin(vsync_pin);
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claim_pin(href_pin);
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maybe_claim_pin(powerdown_pin);
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maybe_claim_pin(reset_pin);
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common_hal_pwmio_pwmout_construct(&self->pwm, external_clock_pin, 1, external_clock_frequency, true);
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self->camera_config.pin_pwdn = common_hal_mcu_pin_number(powerdown_pin);
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self->camera_config.pin_reset = common_hal_mcu_pin_number(reset_pin);
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self->camera_config.pin_xclk = common_hal_mcu_pin_number(external_clock_pin);
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self->camera_config.pin_sccb_sda = NO_PIN;
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self->camera_config.pin_sccb_scl = NO_PIN;
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/* sccb i2c port set below */
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self->camera_config.pin_d7 = data_pins[7];
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self->camera_config.pin_d6 = data_pins[6];
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self->camera_config.pin_d5 = data_pins[5];
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self->camera_config.pin_d4 = data_pins[4];
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self->camera_config.pin_d3 = data_pins[3];
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self->camera_config.pin_d2 = data_pins[2];
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self->camera_config.pin_d1 = data_pins[1];
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self->camera_config.pin_d0 = data_pins[0];
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self->camera_config.pin_vsync = common_hal_mcu_pin_number(vsync_pin);
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self->camera_config.pin_href = common_hal_mcu_pin_number(href_pin);
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self->camera_config.pin_pclk = common_hal_mcu_pin_number(pixel_clock_pin);
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self->camera_config.xclk_freq_hz = external_clock_frequency;
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self->camera_config.ledc_timer = self->pwm.tim_handle.timer_num;
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self->camera_config.ledc_channel = self->pwm.chan_handle.channel;
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self->camera_config.pixel_format = pixel_format;
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self->camera_config.frame_size = frame_size;
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self->camera_config.jpeg_quality = jpeg_quality;
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self->camera_config.fb_count = framebuffer_count;
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self->camera_config.grab_mode = grab_mode;
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self->camera_config.sccb_i2c_port = i2c->i2c_num;
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CHECK_ESP_RESULT(esp_camera_init(&self->camera_config));
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}
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extern void common_hal_esp32_camera_camera_deinit(esp32_camera_camera_obj_t *self) {
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if (common_hal_esp32_camera_camera_deinited(self)) {
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return;
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}
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common_hal_pwmio_pwmout_deinit(&self->pwm);
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reset_pin_number(self->camera_config.pin_pwdn);
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reset_pin_number(self->camera_config.pin_reset);
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reset_pin_number(self->camera_config.pin_xclk);
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reset_pin_number(self->camera_config.pin_d7);
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reset_pin_number(self->camera_config.pin_d6);
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reset_pin_number(self->camera_config.pin_d5);
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reset_pin_number(self->camera_config.pin_d4);
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reset_pin_number(self->camera_config.pin_d3);
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reset_pin_number(self->camera_config.pin_d2);
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reset_pin_number(self->camera_config.pin_d1);
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reset_pin_number(self->camera_config.pin_d0);
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esp_camera_deinit();
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self->camera_config.xclk_freq_hz = 0;
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}
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bool common_hal_esp32_camera_camera_deinited(esp32_camera_camera_obj_t *self) {
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return !self->camera_config.xclk_freq_hz;
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}
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bool common_hal_esp32_camera_camera_available(esp32_camera_camera_obj_t *self) {
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return esp_camera_fb_available();
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}
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camera_fb_t *common_hal_esp32_camera_camera_take(esp32_camera_camera_obj_t *self, int timeout_ms) {
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if (self->buffer_to_return) {
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esp_camera_fb_return(self->buffer_to_return);
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self->buffer_to_return = NULL;
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}
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return esp_camera_fb_get_timeout(timeout_ms);
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}
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