qmk_firmware

QMK firmware for my keyboards (Corne, Sweep Ferris) and trackball (Ploopy Adept)
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sx60.h (750B)

      1 #pragma once
      2 
      3 #include "quantum.h"
      4 #include <stdint.h>
      5 #include <stdbool.h>
      6 #include "i2c_master.h"
      7 #include <util/delay.h>
      8 
      9 /* I2C aliases and register addresses (see "mcp23018.md") */
     10 #define I2C_ADDR        (0b0100000 << 1)
     11 #define I2C_TIMEOUT     100
     12 #define IODIRA          0x00            /* i/o direction register */
     13 #define IODIRB          0x01
     14 #define GPPUA           0x0C            /* GPIO pull-up resistor register */
     15 #define GPPUB           0x0D
     16 #define GPIOA           0x12            /* general purpose i/o port register (write modifies OLAT) */
     17 #define GPIOB           0x13
     18 #define OLATA           0x14            /* output latch register */
     19 #define OLATB           0x15
     20 
     21 extern uint8_t mcp23018_status;
     22 
     23 uint8_t init_mcp23018(void);