mirror of
https://github.com/qmk/qmk_firmware.git
synced 2024-12-23 09:59:53 +00:00
85 lines
2.6 KiB
C
85 lines
2.6 KiB
C
#include QMK_KEYBOARD_H
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bool i2c_initialized = 0;
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i2c_status_t mcp23018_status = 0x20;
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void matrix_init_kb(void) {
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// (tied to Vcc for hardware convenience)
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//DDRB &= ~(1<<4); // set B(4) as input
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//PORTB &= ~(1<<4); // set B(4) internal pull-up disabled
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// unused pins - C7, D4, D5, D7, E6
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// set as input with internal pull-up enabled
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DDRC &= ~(1<<7);
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DDRD &= ~(1<<5 | 1<<4 | 1<<6 | 1<<7);
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DDRE &= ~(1<<6);
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PORTC |= (1<<7);
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PORTD |= (1<<5 | 1<<4 | 1<<6 | 1<<7);
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PORTE |= (1<<6);
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matrix_init_user();
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}
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uint8_t init_mcp23018(void) {
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print("starting init");
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mcp23018_status = 0x20;
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// I2C subsystem
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// uint8_t sreg_prev;
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// sreg_prev=SREG;
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// cli();
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if (i2c_initialized == 0) {
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i2c_init(); // on pins D(1,0)
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i2c_initialized = true;
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_delay_ms(1000);
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}
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// i2c_init(); // on pins D(1,0)
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// _delay_ms(1000);
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// set pin direction
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// - unused : input : 1
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// - input : input : 1
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// - driving : output : 0
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mcp23018_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT); if (mcp23018_status) goto out;
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mcp23018_status = i2c_write(IODIRA, I2C_TIMEOUT); if (mcp23018_status) goto out;
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mcp23018_status = i2c_write(0b10000000, I2C_TIMEOUT); if (mcp23018_status) goto out;
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mcp23018_status = i2c_write(0b11111111, I2C_TIMEOUT); if (mcp23018_status) goto out;
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i2c_stop();
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// set pull-up
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// - unused : on : 1
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// - input : on : 1
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// - driving : off : 0
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mcp23018_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT); if (mcp23018_status) goto out;
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mcp23018_status = i2c_write(GPPUA, I2C_TIMEOUT); if (mcp23018_status) goto out;
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mcp23018_status = i2c_write(0b10000000, I2C_TIMEOUT); if (mcp23018_status) goto out;
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mcp23018_status = i2c_write(0b11111111, I2C_TIMEOUT); if (mcp23018_status) goto out;
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out:
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i2c_stop();
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// SREG=sreg_prev;
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//uprintf("Init %x\n", mcp23018_status);
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return mcp23018_status;
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}
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const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
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{ {0,0}, {0,7}, {2,7}, {3,7} },
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{ {0,8}, {1,8}, {2,8}, {3,8} },
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{ {0,9}, {1,9}, {2,9}, {3,9} },
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{ {0,10}, {1,10}, {2,10}, {3,10} },
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{ {0,11}, {1,11}, {2,11}, {3,11} },
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{ {0,12}, {1,12}, {2,12}, {0,0} },
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{ {0,13}, {1,13}, {2,13}, {0,0} },
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{ {1,0}, {0,0}, {2,0}, {3,0} },
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{ {0,1}, {1,1}, {2,1}, {3,1} },
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{ {0,2}, {1,2}, {2,2}, {3,2} },
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{ {0,3}, {1,3}, {2,3}, {3,3} },
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{ {0,4}, {1,4}, {2,4}, {3,4} },
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{ {0,5}, {1,5}, {2,5}, {3,5} },
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{ {0,6}, {1,6}, {2,6}, {3,6} }
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};
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