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adafruit-esp32s3-camera: set up backlight at boot & add solarize

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the backlight situation will be revisited with the next board prototype,
but it's good to prove this can be done.

Depends on https://github.com/adafruit/esp32-camera/pull/6 which should
be merged before this.
This commit is contained in:
Jeff Epler 2023-08-02 08:09:13 -05:00
parent 2b0f1cd087
commit 4e01e6bbe5
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GPG Key ID: D5BF15AB975AB4DE
2 changed files with 65 additions and 1 deletions
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64
ports/espressif/boards/adafruit_esp32s3_camera/board.c
View File

@ -35,6 +35,8 @@
#include "shared-bindings/board/__init__.h"
#include "esp_log.h"
#include "esp_err.h"
#include "driver/i2c.h"
displayio_fourwire_obj_t board_display_obj;
@ -50,7 +52,69 @@ uint8_t display_init_sequence[] = {
0x29, 0 | DELAY, 5, // _DISPON
};
#define I2C_MASTER_SCL_IO 34
#define I2C_MASTER_SDA_IO 33
#define I2C_MASTER_NUM 0
#define I2C_MASTER_FREQ_HZ 400000
#define I2C_MASTER_TX_BUF_DISABLE 0
#define I2C_MASTER_RX_BUF_DISABLE 0
#define I2C_MASTER_TIMEOUT_MS 1000
#define I2C_WAIT 40 // Timing (in microseconds) for I2C
#define AW9523_ADDR (0x5B)
#define AW9523_REG_SOFTRESET (0x7f)
#define AW9523_REG_OUTPUT0 (0x02)
#define AW9523_REG_CONFIG0 (0x04)
#define AW9523_DEFAULT_OUTPUT (0)
#define AW9523_DEFAULT_CONFIG (0x2)
static void io_expander_backlight_init(void) {
int i2c_num = I2C_MASTER_NUM;
i2c_config_t conf = {
.mode = I2C_MODE_MASTER,
.sda_io_num = I2C_MASTER_SDA_IO,
.scl_io_num = I2C_MASTER_SCL_IO,
.sda_pullup_en = GPIO_PULLUP_ENABLE,
.scl_pullup_en = GPIO_PULLUP_ENABLE,
.master.clk_speed = I2C_MASTER_FREQ_HZ,
};
i2c_param_config(i2c_num, &conf);
i2c_driver_install(i2c_num, conf.mode, I2C_MASTER_RX_BUF_DISABLE, I2C_MASTER_TX_BUF_DISABLE, 0);
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, AW9523_ADDR << 1 | I2C_MASTER_WRITE, true);
i2c_master_write_byte(cmd, AW9523_REG_SOFTRESET, true);
i2c_master_write_byte(cmd, 0, true);
i2c_master_stop(cmd);
i2c_master_cmd_begin(i2c_num, cmd, 1000 / portTICK_RATE_MS);
i2c_cmd_link_delete(cmd);
cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, AW9523_ADDR << 1 | I2C_MASTER_WRITE, true);
i2c_master_write_byte(cmd, AW9523_REG_CONFIG0, true);
i2c_master_write_byte(cmd, AW9523_DEFAULT_CONFIG >> 8, true);
i2c_master_write_byte(cmd, AW9523_DEFAULT_CONFIG & 0xff, true);
i2c_master_stop(cmd);
i2c_master_cmd_begin(i2c_num, cmd, 1000 / portTICK_RATE_MS);
i2c_cmd_link_delete(cmd);
cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, AW9523_ADDR << 1 | I2C_MASTER_WRITE, true);
i2c_master_write_byte(cmd, AW9523_REG_OUTPUT0, true);
i2c_master_write_byte(cmd, AW9523_DEFAULT_OUTPUT >> 8, true);
i2c_master_write_byte(cmd, AW9523_DEFAULT_OUTPUT & 0xff, true);
i2c_master_stop(cmd);
i2c_master_cmd_begin(i2c_num, cmd, 1000 / portTICK_RATE_MS);
i2c_cmd_link_delete(cmd);
i2c_driver_delete(i2c_num);
}
void board_init(void) {
io_expander_backlight_init();
busio_spi_obj_t *spi = common_hal_board_create_spi(0);
displayio_fourwire_obj_t *bus = &allocate_display_bus()->fourwire_bus;
bus->base.type = &displayio_fourwire_type;

2
ports/espressif/esp32-camera

@ -1 +1 @@
Subproject commit 2cd2a6d69faaba9ebb6105814a50039d82e2f899
Subproject commit 2758089a06ccae79d8fcab6c93e2ca3761646f9f