Serial Interface Command BMA400

[Mari]

Hi to all, 

for me it isn't clear the sintax "Switching into Normal from Low-power mode can be explicity triggered by a serial interface command" and one similar is on low power paragraph. Also in the diagram, a source for the wake-up a SI (serial interface) command is explicitly wrote.

Which means "serial command"? Is it a command to write in CMD register (0x7E)? If, yes, what is the right opcode? 

Thanks,

Marilena

[FAE_CA1 · Accepted solution]

Hi,

Thanks for your inquiry.

"Serial command" means register write, not write in CMD register (0x7E). For example after BMA400 is powered on, it will enter and stay in sleep mode waiting for the command. If you write value of 0x02 to register 0x19 through I2C or SPI serial interface, then BMA400 will enter and stay in normal mode. Similarly, when you write value of 0x01 to register 0x19, BMA400 will enter and stay in low power mode. Please see the attached PDF file as a reference.

Thanks.

[Mari]

Hi FAE_CA1,

thank for your clarification....more obvious than i supposed.

Marilena