int main(void) {
UART_INIT_STDIO();
// enable watchdog (pin 6 output)
DDRD &= ~_BV(PIND6);
blink(3);
printf("\n");
i2c_init(I2C_SPEED_400KHZ);
for (uint8_t i = 0x00; i < 0x3a; i++) {
uint8_t value = i2c_read_reg(0x6b, i);
printf("REG(0x%02x) = ", i);
print_bits(sizeof value, &value);
printf(" 0x%02x\n", value);
}
i2c_write_reg(0x6b, 0x39, 0b00000000);
uint8_t ctrl1 = i2c_read_reg(0x6b, 0x20);
i2c_write_reg(0x6b, 0x20, ctrl1 | 0b1010);
// do some low level blinking until the watchdog hits
while (1) {
uint8_t status = i2c_read_reg(0x6b, 0x27);
print_bits(sizeof status, &status);
printf(" X(%d) Y(%d) Z(%d), REF(%02x) TEMP(%02dºC)\r",
i2c_read_reg16(0x6b, 0x28),
i2c_read_reg16(0x6b, 0x2A),
i2c_read_reg16(0x6b, 0x3C),
i2c_read_reg(0x6b, 0x25),
i2c_read_reg(0x6b, 0x26)
);
PORTB ^= _BV(PORTB5);
_delay_ms(50);
};
}
int apds9190_read_prox(struct td_device *dev)
{
return i2c_read_reg16(dev, REG_PDATA);
}
