58 lines
1.4 KiB
C
58 lines
1.4 KiB
C
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#pragma once
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#include "quantum.h"
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#include <stdint.h>
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#include "i2c_master.h"
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#include <util/delay.h>
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#define MCP23017
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#define MCP23017_A0 0
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#define MCP23017_A1 0
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#define MCP23017_A2 0
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#define I2C_ADDR (0x20)
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#define I2C_ADDR_WRITE ((I2C_ADDR << 1) | I2C_WRITE)
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#define I2C_ADDR_READ ((I2C_ADDR << 1) | I2C_READ)
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#define MCP23017_B0_IODIRA 0x00
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#define MCP23017_B0_IODIRB 0x01
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#define MCP23017_B0_IPOLA 0x02
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#define MCP23017_B0_IPOLB 0x03
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#define MCP23017_B0_GPINTENA 0x04
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#define MCP23017_B0_GPINTENB 0x05
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#define MCP23017_B0_DEFVALA 0x06
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#define MCP23017_B0_DEFVALB 0x07
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#define MCP23017_B0_INTCONA 0x08
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#define MCP23017_B0_INTCONB 0x09
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#define MCP23017_B0_IOCONA 0x0A
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#define MCP23017_B0_IOCONB 0x0B
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#define MCP23017_B0_GPPUA 0x0C
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#define MCP23017_B0_GPPUB 0x0D
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#define MCP23017_B0_INTFA 0x0E
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#define MCP23017_B0_INTFB 0x0F
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#define MCP23017_B0_INTCAPA 0x10
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#define MCP23017_B0_INTCAPB 0x11
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#define MCP23017_B0_GPIOA 0x12
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#define MCP23017_B0_GPIOB 0x13
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#define MCP23017_B0_OLATA 0x14
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#define MCP23017_B0_OLATB 0x15
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#define HOTDOX_I2C_TIMEOUT 100
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typedef int16_t i2c_status_t;
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void left_init(void);
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void left_scan(void);
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uint8_t left_read_cols(void);
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uint8_t left_get_col(uint8_t col);
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matrix_row_t left_read_row(void);
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void left_unselect_rows(void);
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void left_select_row(uint8_t row);
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uint8_t init_mcp23017(void);
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