74 lines
2.5 KiB
C
74 lines
2.5 KiB
C
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#include <avr/interrupt.h>
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#include <avr/sleep.h>
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#include <dio.h>
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#include <i2c.h>
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typedef enum registers {
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POWER_OFF = 0x00,
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SET_LIGHTS = 0x01,
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} registers_e;
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int main(void) {
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i2c_device_t * i2c = i2c_device_init(
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(dio_t){ .ddr = &DDRB, .port = &PORTB, .addr = 4 },
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(dio_t){ .ddr = &DDRB, .port = &PORTB, .addr = 3 },
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0x93,
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3
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);
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dio_t blue = (dio_t){ .ddr = &DDRB, .port = &PORTB, .addr = 0 };
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dio_t green = (dio_t){ .ddr = &DDRB, .port = &PORTB, .addr = 1 };
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dio_t red = (dio_t){ .ddr = &DDRB, .port = &PORTB, .addr = 2 };
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dio_set_direction(&blue, LINE_OUT);
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dio_set_direction(&green, LINE_OUT);
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dio_set_direction(&red, LINE_OUT);
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set_sleep_mode(SLEEP_MODE_IDLE);
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while (1) {
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sei();
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sleep_mode();
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cli();
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i2c_device_step(i2c_device_t *i2c);
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// Now, it's necessary to check whether the register has been set
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// /* SDA has changed. If it's low, let's listen for data */
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// if (!dio_read(i2c.sda)) {
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// /* data incoming. Read the address */
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// uint8_t status = i2c_ok;
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// uint8_t addr = i2c_client_read_byte(&i2c, &status);
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// if (addr == 0x93) {
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// /* Send the ack signal by pulling SDA low for one tick */
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// i2c_client_write_bit(&i2c, 0, &status);
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// uint8_t reg = i2c_client_read_byte(&i2c, &status);
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// switch (reg) {
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// case POWER_OFF:
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// /* turn all of the lights off and put the device into lowest sleep mode */
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// break;
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// case SET_LIGHTS:
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// uint8_t light_status = i2c_client_read_byte(&i2c, &status);
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// dio_set(&red, light_status & _BV(2));
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// dio_set(&green, light_status & _BV(1));
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// dio_set(&blue, light_status & _BV(0));
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// break;
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// default:
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// /* unrecognized register */
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// i2c_client_write(&i2c, 1, &status);
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// }
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// } else {
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// /* The message was not for us, so wait until the bus goes idle */
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// bus_state_e state = ACTIVE;
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// while (1) {
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// sei();
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// sleep_mode();
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// cli();
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// }
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// }
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// }
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}
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}
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