+ ao_mma655x_start();
+ PRINTD("value SEND %02x %02x\n", d[0], d[1]);
+ ao_spi_send(d, 2, AO_MMA655X_SPI_INDEX);
+ ao_mma655x_restart();
+ d[0] = 0x80;
+ d[1] = 0x00;
+ ao_spi_duplex(d, d, 2, AO_MMA655X_SPI_INDEX);
+ ao_mma655x_stop();
+ PRINTD("value RECV %02x %02x\n", d[0], d[1]);
+