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-rw-r--r--keyboards/ergodox/ez/ez.c85
1 files changed, 85 insertions, 0 deletions
diff --git a/keyboards/ergodox/ez/ez.c b/keyboards/ergodox/ez/ez.c
new file mode 100644
index 0000000000..e7afc98590
--- /dev/null
+++ b/keyboards/ergodox/ez/ez.c
@@ -0,0 +1,85 @@
+#include "ez.h"
+#include "i2cmaster.h"
+
+bool i2c_initialized = 0;
+uint8_t mcp23018_status = 0x20;
+
+void matrix_init_kb(void) {
+ // keyboard LEDs (see "PWM on ports OC1(A|B|C)" in "teensy-2-0.md")
+ TCCR1A = 0b10101001; // set and configure fast PWM
+ TCCR1B = 0b00001001; // set and configure fast PWM
+
+ // (tied to Vcc for hardware convenience)
+ DDRB &= ~(1<<4); // set B(4) as input
+ PORTB &= ~(1<<4); // set B(4) internal pull-up disabled
+
+ // unused pins - C7, D4, D5, D7, E6
+ // set as input with internal pull-ip enabled
+ DDRC &= ~(1<<7);
+ DDRD &= ~(1<<7 | 1<<5 | 1<<4);
+ DDRE &= ~(1<<6);
+ PORTC |= (1<<7);
+ PORTD |= (1<<7 | 1<<5 | 1<<4);
+ PORTE |= (1<<6);
+
+ ergodox_blink_all_leds();
+
+ matrix_init_user();
+}
+
+void ergodox_blink_all_leds(void)
+{
+ ergodox_led_all_off();
+ ergodox_led_all_set(LED_BRIGHTNESS_HI);
+ ergodox_right_led_1_on();
+ _delay_ms(50);
+ ergodox_right_led_2_on();
+ _delay_ms(50);
+ ergodox_right_led_3_on();
+ _delay_ms(50);
+ ergodox_right_led_1_off();
+ _delay_ms(50);
+ ergodox_right_led_2_off();
+ _delay_ms(50);
+ ergodox_right_led_3_off();
+ //ergodox_led_all_on();
+ //_delay_ms(333);
+ ergodox_led_all_off();
+}
+
+uint8_t init_mcp23018(void) {
+ mcp23018_status = 0x20;
+
+ // I2C subsystem
+ if (i2c_initialized == 0) {
+ i2c_init(); // on pins D(1,0)
+ i2c_initialized++;
+ _delay_ms(1000);
+ }
+
+ // set pin direction
+ // - unused : input : 1
+ // - input : input : 1
+ // - driving : output : 0
+ mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
+ mcp23018_status = i2c_write(IODIRA); if (mcp23018_status) goto out;
+ mcp23018_status = i2c_write(0b00000000); if (mcp23018_status) goto out;
+ mcp23018_status = i2c_write(0b00111111); if (mcp23018_status) goto out;
+ i2c_stop();
+
+ // set pull-up
+ // - unused : on : 1
+ // - input : on : 1
+ // - driving : off : 0
+ mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
+ mcp23018_status = i2c_write(GPPUA); if (mcp23018_status) goto out;
+ mcp23018_status = i2c_write(0b00000000); if (mcp23018_status) goto out;
+ mcp23018_status = i2c_write(0b00111111); if (mcp23018_status) goto out;
+
+out:
+ i2c_stop();
+
+ return mcp23018_status;
+}
+
+