circuitpython/shared-bindings/dotclockframebuffer/__init__.h

58 lines
2.1 KiB
C

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2018 Scott Shawcroft 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.
*/
#pragma once
#include "py/obj.h"
#include "shared-bindings/busio/I2C.h"
typedef union {
struct {
uint8_t addr, data;
} a8d8;
struct {
uint16_t addr, data; // in little endian
} a16d16;
struct {
uint8_t addr;
uint16_t data; // in little endian
} __attribute__((packed)) a8d16;
uint32_t u32;
} dotclockframebuffer_ioexpander_addr_reg_t;
typedef struct {
busio_i2c_obj_t *bus;
uint8_t i2c_device_address;
uint8_t i2c_write_size;
dotclockframebuffer_ioexpander_addr_reg_t addr_reg_shadow;
uint32_t cs_mask;
uint32_t mosi_mask;
uint32_t clk_mask;
uint32_t reset_mask;
} dotclockframebuffer_ioexpander_spi_bus;
void dotclockframebuffer_ioexpander_send_init_sequence(dotclockframebuffer_ioexpander_spi_bus *bus, const mp_buffer_info_t *i2c_bus_init, const mp_buffer_info_t *display_init);