left.h (1219B)
1 #pragma once 2 3 #include <stdint.h> 4 #include "i2c_master.h" 5 6 #define MCP23017 7 #define MCP23017_A0 0 8 #define MCP23017_A1 0 9 #define MCP23017_A2 0 10 11 #define I2C_ADDR ((0x20) << 1) 12 13 #define MCP23017_B0_IODIRA 0x00 14 #define MCP23017_B0_IODIRB 0x01 15 #define MCP23017_B0_IPOLA 0x02 16 #define MCP23017_B0_IPOLB 0x03 17 #define MCP23017_B0_GPINTENA 0x04 18 #define MCP23017_B0_GPINTENB 0x05 19 #define MCP23017_B0_DEFVALA 0x06 20 #define MCP23017_B0_DEFVALB 0x07 21 #define MCP23017_B0_INTCONA 0x08 22 #define MCP23017_B0_INTCONB 0x09 23 #define MCP23017_B0_IOCONA 0x0A 24 #define MCP23017_B0_IOCONB 0x0B 25 #define MCP23017_B0_GPPUA 0x0C 26 #define MCP23017_B0_GPPUB 0x0D 27 #define MCP23017_B0_INTFA 0x0E 28 #define MCP23017_B0_INTFB 0x0F 29 #define MCP23017_B0_INTCAPA 0x10 30 #define MCP23017_B0_INTCAPB 0x11 31 #define MCP23017_B0_GPIOA 0x12 32 #define MCP23017_B0_GPIOB 0x13 33 #define MCP23017_B0_OLATA 0x14 34 #define MCP23017_B0_OLATB 0x15 35 36 #define HOTDOX_I2C_TIMEOUT 100 37 38 void left_init(void); 39 void left_scan(void); 40 41 uint8_t left_read_cols(void); 42 uint8_t left_get_col(uint8_t col); 43 44 void left_unselect_rows(void); 45 void left_select_row(uint8_t row); 46 47 uint8_t init_mcp23017(void); 48