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86 lines
1.8 KiB
86 lines
1.8 KiB
/* |
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* Copyright (c) 2020 Geanix ApS, Pete Johanson |
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* |
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* SPDX-License-Identifier: Apache-2.0 |
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*/ |
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/** |
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* @file Header file for the MCP23017 driver. |
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*/ |
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#ifndef ZEPHYR_DRIVERS_GPIO_GPIO_MCP23017_H_ |
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#define ZEPHYR_DRIVERS_GPIO_GPIO_MCP23017_H_ |
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#include <kernel.h> |
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#include <drivers/gpio.h> |
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#include <drivers/i2c.h> |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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/* Register definitions */ |
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#define REG_IODIR_PORTA 0x00 |
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#define REG_IODIR_PORTB 0x01 |
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#define REG_IPOL_PORTA 0x02 |
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#define REG_IPOL_PORTB 0x03 |
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#define REG_GPINTEN_PORTA 0x04 |
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#define REG_GPINTEN_PORTB 0x05 |
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#define REG_DEFVAL_PORTA 0x06 |
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#define REG_DEFVAL_PORTB 0x07 |
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#define REG_INTCON_PORTA 0x08 |
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#define REG_INTCON_PORTB 0x09 |
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#define REG_GPPU_PORTA 0x0C |
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#define REG_GPPU_PORTB 0x0D |
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#define REG_INTF_PORTA 0x0E |
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#define REG_INTF_PORTB 0x0F |
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#define REG_INTCAP_PORTA 0x10 |
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#define REG_INTCAP_PORTB 0x11 |
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#define REG_GPIO_PORTA 0x12 |
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#define REG_GPIO_PORTB 0x13 |
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#define REG_OLAT_PORTA 0x14 |
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#define REG_OLAT_PORTB 0x15 |
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#define MCP23017_ADDR 0x40 |
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#define MCP23017_READBIT 0x01 |
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/** Configuration data */ |
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struct mcp23017_config { |
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/* gpio_driver_data needs to be first */ |
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struct gpio_driver_config common; |
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const char *const i2c_dev_name; |
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const uint16_t slave; |
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}; |
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/** Runtime driver data */ |
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struct mcp23017_drv_data { |
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/* gpio_driver_data needs to be first */ |
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struct gpio_driver_config data; |
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/** Master SPI device */ |
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const struct device *i2c; |
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struct k_sem lock; |
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struct { |
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uint16_t iodir; |
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uint16_t ipol; |
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uint16_t gpinten; |
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uint16_t defval; |
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uint16_t intcon; |
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uint16_t iocon; |
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uint16_t gppu; |
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uint16_t intf; |
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uint16_t intcap; |
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uint16_t gpio; |
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uint16_t olat; |
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} reg_cache; |
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}; |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif /* ZEPHYR_DRIVERS_GPIO_GPIO_MCP23017_H_ */
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