uext.h

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// Copyright 2024 LLVM-MOS Project
// Licensed under the Apache License, Version 2.0 with LLVM Exceptions.
// See https://github.com/llvm-mos/llvm-mos-sdk/blob/main/LICENSE for license
// information.
 
#include <stdint.h>
 
#ifndef _NEO_UEXT_H
#define _NEO_UEXT_H
 
#include <neo6502.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
typedef enum neo_uext_direction {
    NEO_UEXT_INPUT = 1,
    NEO_UEXT_OUTPUT = 2,
    NEO_UEXT_ANALOGUE_INPUT = 3
} neo_uext_direction_t;
 
void neo_uext_init(void);
 
void neo_uext_gpio_write(uint8_t pin, uint8_t value);
 
uint8_t neo_uext_gpio_read(uint8_t pin);
 
void neo_uext_gpio_set_direction(uint8_t pin, uint8_t direction);
 
void neo_uext_i2c_write(uint8_t device, uint8_t reg, uint8_t value);
 
uint8_t neo_uext_i2c_read(uint8_t device, uint8_t reg);
 
uint16_t neo_uext_analogue_read(uint8_t pin);
 
uint8_t neo_uext_i2c_status(uint8_t device);
 
void neo_uext_i2c_block_read(uint8_t device, void *dest, uint16_t len);
 
void neo_uext_i2c_block_write(uint8_t device, const void *src, uint16_t len);
 
void neo_uext_spi_block_read(uint8_t device, void *dest, uint16_t len);
 
void neo_uext_spi_block_write(uint8_t device, const void *src, uint16_t len);
 
#ifdef __cplusplus
}
#endif
 
#endif